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Network Working Group                                         R. ThurlowRequest for Comments: 5531                              Sun MicrosystemsObsoletes:1831                                                 May 2009Category: Standards TrackRPC: Remote Procedure Call Protocol Specification Version 2Status of This Memo   This document specifies an Internet standards track protocol for the   Internet community, and requests discussion and suggestions for   improvements.  Please refer to the current edition of the "Internet   Official Protocol Standards" (STD 1) for the standardization state   and status of this protocol.  Distribution of this memo is unlimited.Copyright Notice   Copyright (c) 2009 IETF Trust and the persons identified as the   document authors.  All rights reserved.   This document is subject toBCP 78 and the IETF Trust's Legal   Provisions Relating to IETF Documents in effect on the date of   publication of this document (http://trustee.ietf.org/license-info).   Please review these documents carefully, as they describe your rights   and restrictions with respect to this document.Abstract   This document describes the Open Network Computing (ONC) Remote   Procedure Call (RPC) version 2 protocol as it is currently deployed   and accepted.  This document obsoletesRFC 1831.Thurlow                     Standards Track                     [Page 1]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009Table of Contents1. Introduction ....................................................31.1. Requirements Language ......................................32. Changes sinceRFC 1831 ..........................................33. Terminology .....................................................34. The RPC Model ...................................................45. Transports and Semantics ........................................56. Binding and Rendezvous Independence .............................77. Authentication ..................................................78. RPC Protocol Requirements .......................................78.1. RPC Programs and Procedures ................................88.2. Authentication, Integrity, and Privacy .....................98.3. Program Number Assignment .................................108.4. Other Uses of the RPC Protocol ............................108.4.1. Batching ...........................................108.4.2. Broadcast Remote Procedure Calls ...................119. The RPC Message Protocol .......................................1110. Authentication Protocols ......................................1510.1. Null Authentication ......................................1511. Record Marking Standard .......................................1612. The RPC Language ..............................................1612.1. An Example Service Described in the RPC Language .........1712.2. The RPC Language Specification ...........................1812.3. Syntax Notes .............................................1813. IANA Considerations ...........................................1913.1. Numbering Requests to IANA ...............................1913.2. Protecting Past Assignments ..............................1913.3. RPC Number Assignment ....................................1913.3.1. To be assigned by IANA ............................2013.3.2. Defined by Local Administrator ....................2013.3.3. Transient Block ...................................2013.3.4. Reserved Block ....................................2113.3.5. RPC Number Sub-Blocks .............................2113.4. RPC Authentication Flavor Number Assignment ..............2213.4.1. Assignment Policy .................................2213.4.2. Auth Flavors vs. Pseudo-Flavors ...................2313.5. Authentication Status Number Assignment ..................2313.5.1. Assignment Policy .................................2314. Security Considerations .......................................24Appendix A: System Authentication .................................25Appendix B: Requesting RPC-Related Numbers from IANA  .............26Appendix C: Current Number Assignments  ...........................27   Normative References  .............................................62   Informative References  ...........................................62Thurlow                     Standards Track                     [Page 2]

RFC 5531        Remote Procedure Call Protocol Version 2        May 20091.  Introduction   This document specifies version 2 of the message protocol used in ONC   Remote Procedure Call (RPC).  The message protocol is specified with   the eXternal Data Representation (XDR) language [RFC4506].  This   document assumes that the reader is familiar with XDR.  It does not   attempt to justify remote procedure call systems or describe their   use.  The paper by Birrell and Nelson [XRPC] is recommended as an   excellent background for the remote procedure call concept.1.1.  Requirements Language   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this   document are to be interpreted as described in [RFC2119].2.  Changes sinceRFC 1831   This document obsoletes [RFC1831] as the authoritative document   describing RPC, without introducing any over-the-wire protocol   changes.  The main changes fromRFC 1831 are:   o  Addition of an Appendix that describes how an implementor can      request new RPC program numbers, authentication flavor numbers,      and authentication status numbers from IANA, rather than from Sun      Microsystems   o  Addition of an "IANA Considerations" section that describes past      number assignment policy and how IANA is intended to assign them      in the future   o  Clarification of the RPC Language Specification to match current      usage   o  Enhancement of the "Security Considerations" section to reflect      experience with strong security flavors   o  Specification of new authentication errors that are in common use      in modern RPC implementations   o  Updates for the latest IETF intellectual property statements3.  Terminology   This document discusses clients, calls, servers, replies, services,   programs, procedures, and versions.  Each remote procedure call has   two sides: an active client side that makes the call to a server   side, which sends back a reply.  A network service is a collection ofThurlow                     Standards Track                     [Page 3]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   one or more remote programs.  A remote program implements one or more   remote procedures; the procedures, their parameters, and results are   documented in the specific program's protocol specification.  A   server may support more than one version of a remote program in order   to be compatible with changing protocols.   For example, a network file service may be composed of two programs.   One program may deal with high-level applications such as file system   access control and locking.  The other may deal with low-level file   input and output and have procedures like "read" and "write".  A   client of the network file service would call the procedures   associated with the two programs of the service on behalf of the   client.   The terms "client" and "server" only apply to a particular   transaction; a particular hardware entity (host) or software entity   (process or program) could operate in both roles at different times.   For example, a program that supplies remote execution service could   also be a client of a network file service.4.  The RPC Model   The ONC RPC protocol is based on the remote procedure call model,   which is similar to the local procedure call model.  In the local   case, the caller places arguments to a procedure in some well-   specified location (such as a register window).  It then transfers   control to the procedure, and eventually regains control.  At that   point, the results of the procedure are extracted from the well-   specified location, and the caller continues execution.   The remote procedure call model is similar.  One thread of control   logically winds through two processes: the caller's process and a   server's process.  The caller first sends a call message to the   server process and waits (blocks) for a reply message.  The call   message includes the procedure's parameters, and the reply message   includes the procedure's results.  Once the reply message is   received, the results of the procedure are extracted, and the   caller's execution is resumed.   On the server side, a process is dormant awaiting the arrival of a   call message.  When one arrives, the server process extracts the   procedure's parameters, computes the results, sends a reply message,   and then awaits the next call message.   In this model, only one of the two processes is active at any given   time.  However, this model is only given as an example.  The ONC RPC   protocol makes no restrictions on the concurrency model implemented,   and others are possible.  For example, an implementation may chooseThurlow                     Standards Track                     [Page 4]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   to have RPC calls be asynchronous so that the client may do useful   work while waiting for the reply from the server.  Another   possibility is to have the server create a separate task to process   an incoming call so that the original server can be free to receive   other requests.   There are a few important ways in which remote procedure calls differ   from local procedure calls.   o  Error handling: failures of the remote server or network must be      handled when using remote procedure calls.   o  Global variables and side effects: since the server does not have      access to the client's address space, hidden arguments cannot be      passed as global variables or returned as side effects.   o  Performance:  remote procedures usually operate at one or more      orders of magnitude slower than local procedure calls.   o  Authentication: since remote procedure calls can be transported      over unsecured networks, authentication may be necessary.      Authentication prevents one entity from masquerading as some other      entity.   The conclusion is that even though there are tools to automatically   generate client and server libraries for a given service, protocols   must still be designed carefully.5.  Transports and Semantics   The RPC protocol can be implemented on several different transport   protocols.  The scope of the definition of the RPC protocol excludes   how a message is passed from one process to another, and includes   only the specification and interpretation of messages.  However, the   application may wish to obtain information about (and perhaps control   over) the transport layer through an interface not specified in this   document.  For example, the transport protocol may impose a   restriction on the maximum size of RPC messages, or it may be   stream-oriented like TCP [RFC0793] with no size limit.  The client   and server must agree on their transport protocol choices.   It is important to point out that RPC does not try to implement any   kind of reliability and that the application may need to be aware of   the type of transport protocol underneath RPC.  If it knows it is   running on top of a reliable transport such as TCP, then most of the   work is already done for it.  On the other hand, if it is running onThurlow                     Standards Track                     [Page 5]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   top of an unreliable transport such as UDP [RFC0768], it must   implement its own time-out, retransmission, and duplicate detection   policies as the RPC protocol does not provide these services.   Because of transport independence, the RPC protocol does not attach   specific semantics to the remote procedures or their execution   requirements.  Semantics can be inferred from (but should be   explicitly specified by) the underlying transport protocol.  For   example, consider RPC running on top of an unreliable transport such   as UDP.  If an application retransmits RPC call messages after time-   outs, and does not receive a reply, it cannot infer anything about   the number of times the procedure was executed.  If it does receive a   reply, then it can infer that the procedure was executed at least   once.   A server may wish to remember previously granted requests from a   client and not regrant them, in order to insure some degree of   execute-at-most-once semantics.  A server can do this by taking   advantage of the transaction ID that is packaged with every RPC   message.  The main use of this transaction ID is by the client RPC   entity in matching replies to calls.  However, a client application   may choose to reuse its previous transaction ID when retransmitting a   call.  The server may choose to remember this ID after executing a   call and not execute calls with the same ID, in order to achieve some   degree of execute-at-most-once semantics.  The server is not allowed   to examine this ID in any other way except as a test for equality.   On the other hand, if using a "reliable" transport such as TCP, the   application can infer from a reply message that the procedure was   executed exactly once, but if it receives no reply message, it cannot   assume that the remote procedure was not executed.  Note that even if   a connection-oriented protocol like TCP is used, an application still   needs time-outs and reconnections to handle server crashes.   There are other possibilities for transports besides datagram- or   connection-oriented protocols.  For example, a request-reply protocol   such as [VMTP] is perhaps a natural transport for RPC.  ONC RPC   currently uses both TCP and UDP transport protocols.Section 11   ("Record Marking Standard") describes the mechanism employed by ONC   RPC to utilize a connection-oriented, stream-oriented transport such   as TCP.  The mechanism by which future transports having different   structural characteristics should be used to transfer ONC RPC   messages should be specified by means of a Standards Track RFC, once   such additional transports are defined.Thurlow                     Standards Track                     [Page 6]

RFC 5531        Remote Procedure Call Protocol Version 2        May 20096.  Binding and Rendezvous Independence   The act of binding a particular client to a particular service and   transport parameters is NOT part of this RPC protocol specification.   This important and necessary function is left up to some higher-level   software.   Implementors could think of the RPC protocol as the jump-subroutine   instruction (JSR) of a network; the loader (binder) makes JSR useful,   and the loader itself uses JSR to accomplish its task.  Likewise, the   binding software makes RPC useful, possibly using RPC to accomplish   this task.7.  Authentication   The RPC protocol provides the fields necessary for a client to   identify itself to a service, and vice-versa, in each call and reply   message.  Security and access control mechanisms can be built on top   of this message authentication.  Several different authentication   protocols can be supported.  A field in the RPC header indicates   which protocol is being used.  More information on specific   authentication protocols is inSection 8.2, "Authentication,   Integrity and Privacy".8.  RPC Protocol Requirements   The RPC protocol must provide for the following:   o  Unique specification of a procedure to be called   o  Provisions for matching response messages to request messages   o  Provisions for authenticating the caller to service and vice-versa   Besides these requirements, features that detect the following are   worth supporting because of protocol roll-over errors, implementation   bugs, user error, and network administration:   o  RPC protocol mismatches   o  Remote program protocol version mismatches   o  Protocol errors (such as misspecification of a procedure's      parameters)   o  Reasons why remote authentication failed   o  Any other reasons why the desired procedure was not calledThurlow                     Standards Track                     [Page 7]

RFC 5531        Remote Procedure Call Protocol Version 2        May 20098.1.  RPC Programs and Procedures   The RPC call message has three unsigned-integer fields -- remote   program number, remote program version number, and remote procedure   number -- that uniquely identify the procedure to be called.  Program   numbers are administered by a central authority (IANA).  Once   implementors have a program number, they can implement their remote   program; the first implementation would most likely have the version   number 1 but MUST NOT be the number zero.  Because most new protocols   evolve, a "version" field of the call message identifies which   version of the protocol the caller is using.  Version numbers enable   support of both old and new protocols through the same server   process.   The procedure number identifies the procedure to be called.  These   numbers are documented in the specific program's protocol   specification.  For example, a file service's protocol specification   may state that its procedure number 5 is "read" and procedure number   12 is "write".   Just as remote program protocols may change over several versions,   the actual RPC message protocol could also change.  Therefore, the   call message also has in it the RPC version number, which is always   equal to 2 for the version of RPC described here.   The reply message to a request message has enough information to   distinguish the following error conditions:   o  The remote implementation of RPC does not support protocol version      2.  The lowest and highest supported RPC version numbers are      returned.   o  The remote program is not available on the remote system.   o  The remote program does not support the requested version number.      The lowest and highest supported remote program version numbers      are returned.   o  The requested procedure number does not exist.  (This is usually a      client-side protocol or programming error.)   o  The parameters to the remote procedure appear to be garbage from      the server's point of view.  (Again, this is usually caused by a      disagreement about the protocol between client and service.)Thurlow                     Standards Track                     [Page 8]

RFC 5531        Remote Procedure Call Protocol Version 2        May 20098.2.  Authentication, Integrity, and Privacy   Provisions for authentication of caller to service and vice-versa are   provided as a part of the RPC protocol.  The call message has two   authentication fields: the credential and the verifier.  The reply   message has one authentication field: the response verifier.  The RPC   protocol specification defines all three fields to be the following   opaque type (in the eXternal Data Representation (XDR) language   [RFC4506]):         enum auth_flavor {            AUTH_NONE       = 0,            AUTH_SYS        = 1,            AUTH_SHORT      = 2,            AUTH_DH         = 3,            RPCSEC_GSS      = 6            /* and more to be defined */         };         struct opaque_auth {            auth_flavor flavor;            opaque body<400>;         };   In other words, any "opaque_auth" structure is an "auth_flavor"   enumeration followed by up to 400 bytes that are opaque to   (uninterpreted by) the RPC protocol implementation.   The interpretation and semantics of the data contained within the   authentication fields are specified by individual, independent   authentication protocol specifications.   If authentication parameters were rejected, the reply message   contains information stating why they were rejected.   As demonstrated by RPCSEC_GSS, it is possible for an "auth_flavor" to   also support integrity and privacy.Thurlow                     Standards Track                     [Page 9]

RFC 5531        Remote Procedure Call Protocol Version 2        May 20098.3.  Program Number Assignment   Program numbers are given out in groups according to the following   chart:             0x00000000                Reserved             0x00000001 - 0x1fffffff   To be assigned by IANA             0x20000000 - 0x3fffffff   Defined by local administrator                                       (some blocks assigned here)             0x40000000 - 0x5fffffff   Transient             0x60000000 - 0x7effffff   Reserved             0x7f000000 - 0x7fffffff   Assignment outstanding             0x80000000 - 0xffffffff   Reserved   The first group is a range of numbers administered by IANA and should   be identical for all sites.  The second range is for applications   peculiar to a particular site.  This range is intended primarily for   debugging new programs.  When a site develops an application that   might be of general interest, that application should be given an   assigned number in the first range.  Application developers may apply   for blocks of RPC program numbers in the first range by methods   described inAppendix B.  The third group is for applications that   generate program numbers dynamically.  The final groups are reserved   for future use, and should not be used.8.4.  Other Uses of the RPC Protocol   The intended use of this protocol is for calling remote procedures.   Normally, each call message is matched with a reply message.   However, the protocol itself is a message-passing protocol with which   other (non-procedure-call) protocols can be implemented.8.4.1.  Batching   Batching is useful when a client wishes to send an arbitrarily large   sequence of call messages to a server.  Batching typically uses   reliable byte stream protocols (like TCP) for its transport.  In the   case of batching, the client never waits for a reply from the server,   and the server does not send replies to batch calls.  A sequence of   batch calls is usually terminated by a legitimate remote procedure   call operation in order to flush the pipeline and get positive   acknowledgement.Thurlow                     Standards Track                    [Page 10]

RFC 5531        Remote Procedure Call Protocol Version 2        May 20098.4.2.  Broadcast Remote Procedure Calls   In broadcast protocols, the client sends a broadcast call to the   network and waits for numerous replies.  This requires the use of   packet-based protocols (like UDP) as its transport protocol.  Servers   that support broadcast protocols usually respond only when the call   is successfully processed and are silent in the face of errors, but   this varies with the application.   The principles of broadcast RPC also apply to multicasting -- an RPC   request can be sent to a multicast address.9.  The RPC Message Protocol   This section defines the RPC message protocol in the XDR data   description language [RFC4506].         enum msg_type {            CALL  = 0,            REPLY = 1         };   A reply to a call message can take on two forms: the message was   either accepted or rejected.         enum reply_stat {            MSG_ACCEPTED = 0,            MSG_DENIED   = 1         };   Given that a call message was accepted, the following is the status   of an attempt to call a remote procedure.         enum accept_stat {            SUCCESS       = 0, /* RPC executed successfully       */            PROG_UNAVAIL  = 1, /* remote hasn't exported program  */            PROG_MISMATCH = 2, /* remote can't support version #  */            PROC_UNAVAIL  = 3, /* program can't support procedure */            GARBAGE_ARGS  = 4, /* procedure can't decode params   */            SYSTEM_ERR    = 5  /* e.g. memory allocation failure  */         };   Reasons why a call message was rejected:         enum reject_stat {            RPC_MISMATCH = 0, /* RPC version number != 2          */            AUTH_ERROR = 1    /* remote can't authenticate caller */         };Thurlow                     Standards Track                    [Page 11]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   Why authentication failed:      enum auth_stat {         AUTH_OK           = 0,  /* success                        */         /*          * failed at remote end          */         AUTH_BADCRED      = 1,  /* bad credential (seal broken)   */         AUTH_REJECTEDCRED = 2,  /* client must begin new session  */         AUTH_BADVERF      = 3,  /* bad verifier (seal broken)     */         AUTH_REJECTEDVERF = 4,  /* verifier expired or replayed   */         AUTH_TOOWEAK      = 5,  /* rejected for security reasons  */         /*          * failed locally          */         AUTH_INVALIDRESP  = 6,  /* bogus response verifier        */         AUTH_FAILED       = 7,  /* reason unknown                 */         /*          * AUTH_KERB errors; deprecated.  See [RFC2695]          */         AUTH_KERB_GENERIC = 8,  /* kerberos generic error */         AUTH_TIMEEXPIRE = 9,    /* time of credential expired */         AUTH_TKT_FILE = 10,     /* problem with ticket file */         AUTH_DECODE = 11,       /* can't decode authenticator */         AUTH_NET_ADDR = 12,     /* wrong net address in ticket */         /*          * RPCSEC_GSS GSS related errors          */         RPCSEC_GSS_CREDPROBLEM = 13, /* no credentials for user */         RPCSEC_GSS_CTXPROBLEM = 14   /* problem with context */      };   As new authentication mechanisms are added, there may be a need for   more status codes to support them.  IANA will hand out new auth_stat   numbers on a simple First Come First Served basis as defined in the   "IANA Considerations" andAppendix B.   The RPC message:   All messages start with a transaction identifier, xid, followed by a   two-armed discriminated union.  The union's discriminant is a   msg_type that switches to one of the two types of the message.  The   xid of a REPLY message always matches that of the initiating CALL   message.  NB: The "xid" field is only used for clients matching reply   messages with call messages or for servers detecting retransmissions;   the service side cannot treat this id as any type of sequence number.Thurlow                     Standards Track                    [Page 12]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009         struct rpc_msg {            unsigned int xid;            union switch (msg_type mtype) {            case CALL:               call_body cbody;            case REPLY:               reply_body rbody;            } body;         };   Body of an RPC call:   In version 2 of the RPC protocol specification, rpcvers MUST be equal   to 2.  The fields "prog", "vers", and "proc" specify the remote   program, its version number, and the procedure within the remote   program to be called.  After these fields are two authentication   parameters: cred (authentication credential) and verf (authentication   verifier).  The two authentication parameters are followed by the   parameters to the remote procedure, which are specified by the   specific program protocol.   The purpose of the authentication verifier is to validate the   authentication credential.  Note that these two items are   historically separate, but are always used together as one logical   entity.        struct call_body {           unsigned int rpcvers;       /* must be equal to two (2) */           unsigned int prog;           unsigned int vers;           unsigned int proc;           opaque_auth cred;           opaque_auth verf;           /* procedure-specific parameters start here */        };   Body of a reply to an RPC call:         union reply_body switch (reply_stat stat) {         case MSG_ACCEPTED:            accepted_reply areply;         case MSG_DENIED:            rejected_reply rreply;         } reply;Thurlow                     Standards Track                    [Page 13]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   Reply to an RPC call that was accepted by the server:   There could be an error even though the call was accepted.  The first   field is an authentication verifier that the server generates in   order to validate itself to the client.  It is followed by a union   whose discriminant is an enum accept_stat.  The SUCCESS arm of the   union is protocol-specific.  The PROG_UNAVAIL, PROC_UNAVAIL,   GARBAGE_ARGS, and SYSTEM_ERR arms of the union are void.  The   PROG_MISMATCH arm specifies the lowest and highest version numbers of   the remote program supported by the server.         struct accepted_reply {            opaque_auth verf;            union switch (accept_stat stat) {            case SUCCESS:               opaque results[0];               /*                * procedure-specific results start here                */             case PROG_MISMATCH:                struct {                   unsigned int low;                   unsigned int high;                } mismatch_info;             default:                /*                 * Void.  Cases include PROG_UNAVAIL, PROC_UNAVAIL,                 * GARBAGE_ARGS, and SYSTEM_ERR.                 */                void;             } reply_data;         };   Reply to an RPC call that was rejected by the server:   The call can be rejected for two reasons: either the server is not   running a compatible version of the RPC protocol (RPC_MISMATCH) or   the server rejects the identity of the caller (AUTH_ERROR).  In case   of an RPC version mismatch, the server returns the lowest and highest   supported RPC version numbers.  In case of invalid authentication,   failure status is returned.Thurlow                     Standards Track                    [Page 14]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009         union rejected_reply switch (reject_stat stat) {         case RPC_MISMATCH:            struct {               unsigned int low;               unsigned int high;            } mismatch_info;         case AUTH_ERROR:            auth_stat stat;         };10.  Authentication Protocols   As previously stated, authentication parameters are opaque, but   open-ended to the rest of the RPC protocol.  This section defines two   standard flavors of authentication.  Implementors are free to invent   new authentication types, with the same rules of flavor number   assignment as there are for program number assignment.  The flavor of   a credential or verifier refers to the value of the "flavor" field in   the opaque_auth structure.  Flavor numbers, like RPC program numbers,   are also administered centrally, and developers may assign new flavor   numbers by methods described inAppendix B.  Credentials and   verifiers are represented as variable-length opaque data (the "body"   field in the opaque_auth structure).   In this document, two flavors of authentication are described.  Of   these, Null authentication (described in the next subsection) is   mandatory -- it MUST be available in all implementations.  System   authentication (AUTH_SYS) is described inAppendix A.  Implementors   MAY include AUTH_SYS in their implementations to support existing   applications.  See "Security Considerations" for information about   other, more secure, authentication flavors.10.1.  Null Authentication   Often, calls must be made where the client does not care about its   identity or the server does not care who the client is.  In this   case, the flavor of the RPC message's credential, verifier, and reply   verifier is "AUTH_NONE".  Opaque data associated with "AUTH_NONE" is   undefined.  It is recommended that the length of the opaque data be   zero.Thurlow                     Standards Track                    [Page 15]

RFC 5531        Remote Procedure Call Protocol Version 2        May 200911.  Record Marking Standard   When RPC messages are passed on top of a byte stream transport   protocol (like TCP), it is necessary to delimit one message from   another in order to detect and possibly recover from protocol errors.   This is called record marking (RM).  One RPC message fits into one RM   record.   A record is composed of one or more record fragments.  A record   fragment is a four-byte header followed by 0 to (2**31) - 1 bytes of   fragment data.  The bytes encode an unsigned binary number; as with   XDR integers, the byte order is from highest to lowest.  The number   encodes two values -- a boolean that indicates whether the fragment   is the last fragment of the record (bit value 1 implies the fragment   is the last fragment) and a 31-bit unsigned binary value that is the   length in bytes of the fragment's data.  The boolean value is the   highest-order bit of the header; the length is the 31 low-order bits.   (Note that this record specification is NOT in XDR standard form!)12.  The RPC Language   Just as there was a need to describe the XDR data-types in a formal   language, there is also need to describe the procedures that operate   on these XDR data-types in a formal language as well.  The RPC   language is an extension to the XDR language, with the addition of   "program", "procedure", and "version" declarations.  The keywords   "program" and "version" are reserved in the RPC language, and   implementations of XDR compilers MAY reserve these keywords even when   provided with pure XDR, non-RPC, descriptions.  The following example   is used to describe the essence of the language.Thurlow                     Standards Track                    [Page 16]

RFC 5531        Remote Procedure Call Protocol Version 2        May 200912.1.  An Example Service Described in the RPC Language   Here is an example of the specification of a simple ping program.      program PING_PROG {            /*             * Latest and greatest version             */            version PING_VERS_PINGBACK {               void               PINGPROC_NULL(void) = 0;               /*                * Ping the client, return the round-trip time                * (in microseconds).  Returns -1 if the operation                * timed out.                */               int               PINGPROC_PINGBACK(void) = 1;            } = 2;            /*             * Original version             */            version PING_VERS_ORIG {               void               PINGPROC_NULL(void) = 0;            } = 1;         } = 1;         const PING_VERS = 2;      /* latest version */   The first version described is PING_VERS_PINGBACK with two   procedures: PINGPROC_NULL and PINGPROC_PINGBACK.  PINGPROC_NULL takes   no arguments and returns no results, but it is useful for computing   round-trip times from the client to the server and back again.  By   convention, procedure 0 of any RPC protocol should have the same   semantics and never require any kind of authentication.  The second   procedure is used for the client to have the server do a reverse ping   operation back to the client, and it returns the amount of time (in   microseconds) that the operation used.  The next version,   PING_VERS_ORIG, is the original version of the protocol, and it does   not contain the PINGPROC_PINGBACK procedure.  It is useful for   compatibility with old client programs, and as this program matures,   it may be dropped from the protocol entirely.Thurlow                     Standards Track                    [Page 17]

RFC 5531        Remote Procedure Call Protocol Version 2        May 200912.2.  The RPC Language Specification   The RPC language is identical to the XDR language defined inRFC4506, except for the added definition of a "program-def", described   below.      program-def:         "program" identifier "{"            version-def            version-def *         "}" "=" constant ";"      version-def:         "version" identifier "{"             procedure-def             procedure-def *         "}" "=" constant ";"      procedure-def:         proc-return identifier "(" proc-firstarg           ("," type-specifier )* ")" "=" constant ";"      proc-return: "void" | type-specifier      proc-firstarg: "void" | type-specifier12.3.  Syntax Notes   o  The following keywords are added and cannot be used as      identifiers: "program" and "version".   o  A version name cannot occur more than once within the scope of a      program definition.  Neither can a version number occur more than      once within the scope of a program definition.   o  A procedure name cannot occur more than once within the scope of a      version definition.  Neither can a procedure number occur more      than once within the scope of version definition.   o  Program identifiers are in the same name space as constant and      type identifiers.   o  Only unsigned constants can be assigned to programs, versions, and      procedures.   o  Current RPC language compilers do not generally support more than      one type-specifier in procedure argument lists; the usual practice      is to wrap arguments into a structure.Thurlow                     Standards Track                    [Page 18]

RFC 5531        Remote Procedure Call Protocol Version 2        May 200913.  IANA Considerations   The assignment of RPC program numbers, authentication flavor numbers,   and authentication status numbers has in the past been performed by   Sun Microsystems, Inc (Sun).  This is inappropriate for an IETF   Standards Track protocol, as such work is done well by the Internet   Assigned Numbers Authority (IANA).  This document proposes the   transfer of authority over RPC program numbers, authentication flavor   numbers, and authentication status numbers described here from Sun   Microsystems, Inc. to IANA and describes how IANA will maintain and   assign these numbers.  Users of RPC protocols will benefit by having   an independent body responsible for these number assignments.13.1.  Numbering Requests to IANAAppendix B of this document describes the information to be sent to   IANA to request one or more RPC numbers and the rules that apply.   IANA will store the request for documentary purposes and put the   following information into the public registry:   o  The short description of purpose and use   o  The program number(s) assigned   o  The short identifier string(s)13.2.  Protecting Past Assignments   Sun has made assignments in both the RPC program number space and the   RPC authentication flavor number space since the original deployment   of RPC.  The assignments made by Sun Microsystems are still valid,   and will be preserved.  Sun has communicated all current assignments   in both number spaces to IANA and final handoff of number assignment   is complete.  Current program and auth number assignments are   provided inAppendix C.  Current authentication status numbers are   listed inSection 9 of this document in the "enum auth_stat"   definition.13.3.  RPC Number Assignment   Future IANA practice will deal with the following partitioning of the   32-bit number space as listed inSection 8.3.  Detailed information   for the administration of the partitioned blocks inSection 8.3 is   given below.Thurlow                     Standards Track                    [Page 19]

RFC 5531        Remote Procedure Call Protocol Version 2        May 200913.3.1.  To Be Assigned By IANA   The first block will be administered by IANA, with previous   assignments by Sun protected.  Previous assignments were restricted   to the range decimal 100000-399999 (0x000186a0 to 0x00061a7f);   therefore, IANA will begin assignments at decimal 400000.  Individual   numbers should be grated on a First Come First Served basis, and   blocks should be granted under rules related to the size of the   block.13.3.2.  Defined by Local Administrator   The "Defined by local administrator" block is available for any local   administrative domain to use, in a similar manner to IP address   ranges reserved for private use.  The expected use would be through   the establishment of a local domain "authority" for assigning numbers   from this range.  This authority would establish any policies or   procedures to be used within that local domain for use or assignment   of RPC numbers from the range.  The local domain should be   sufficiently isolated that it would be unlikely that RPC applications   developed by other local domains could communicate with the domain.   This could result in RPC number contention, which would cause one of   the applications to fail.  In the absence of a local administrator,   this block can be utilized in a "Private Use" manner per [RFC5226].13.3.3.  Transient Block   The "Transient" block can be used by any RPC application on an "as   available" basis.  This range is intended for services that can   communicate a dynamically selected RPC program number to clients of   the service.  Any mechanism can be used to communicate the number.   For example, either shared memory when the client and server are   located on the same system or a network message (either RPC or   otherwise) that disseminates the selected number can be used.   The transient block is not administered.  An RPC service uses this   range by selecting a number in the transient range and attempting to   register that number with the local system's RPC bindery (see the   RPCBPROC_SET or PMAPPROC_SET procedures in "Binding Protocols for ONC   RPC Version 2", [RFC1833]).  If successful, no other RPC service was   using that number and the RPC Bindery has assigned that number to the   requesting RPC application.  The registration is valid until the RPC   Bindery terminates, which normally would only happen if the system   reboots, causing all applications, including the RPC service using   the transient number, to terminate.  If the transient number   registration fails, another RPC application is using the number andThurlow                     Standards Track                    [Page 20]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   the requestor must select another number and try again.  To avoid   conflicts, the recommended method is to select a number randomly from   the transient range.13.3.4.  Reserved Block   The "Reserved" blocks are available for future use.  RPC applications   must not use numbers in these ranges unless their use is allowed by   future action by the IESG.13.3.5.  RPC Number Sub-Blocks   RPC numbers are usually assigned for specific RPC services.  Some   applications, however, require multiple RPC numbers for a service.   The most common example is an RPC service that needs to have multiple   instances of the service active simultaneously at a specific site.   RPC does not have an "instance identifier" in the protocol, so either   a mechanism must be implemented to multiplex RPC requests amongst   various instances of the service or unique RPC numbers must be used   by each instance.   In these cases, the RPC protocol used with the various numbers may be   different or the same.  The numbers may either be assigned   dynamically by the application, or as part of a site-specific   administrative decision.  If possible, RPC services that dynamically   assign RPC numbers should use the "Transient" RPC number block   defined inSection 13.3.3.  If not possible, RPC number sub-blocks   may be requested.   Assignment of RPC Number Sub-Blocks is controlled by the size of the   sub-block being requested.  "Specification Required" and "IESG   Approval" are used as defined bySection 4.1 of [RFC5226].   Size of sub-block        Assignment Method         Authority   -----------------        -----------------         ---------   Up to 100 numbers        First Come First Served   IANA   Up to 1000 numbers       Specification Required    IANA   More than 1000 numbers   IESG Approval required    IESG   Note: sub-blocks can be any size.  The limits given above are   maximums, and smaller size sub-blocks are allowed.   Sub-blocks sized up to 100 numbers may be assigned by IANA on a First   Come First Served basis.  The RPC Service Description included in the   range must include an indication of how the sub-block is managed.  At   a minimum, the statement should indicate whether the sub-block isThurlow                     Standards Track                    [Page 21]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   used with a single RPC protocol or multiple RPC protocols, and   whether the numbers are dynamically assigned or statically (through   administrative action) assigned.   Sub-blocks of up to 1000 numbers must be documented in detail.  The   documentation must describe the RPC protocol or protocols that are to   be used in the range.  It must also describe how the numbers within   the sub-block are to be assigned or used.   Sub-blocks sized over 1000 numbers must be documented as described   above, and the assignment must be approved by the IESG.  It is   expected that this will be rare.   In order to avoid multiple requests of large blocks of numbers, the   following rule is proposed.   Requests up to and including 100 RPC numbers are handled via the   First Come First Served assignment method.  This 100 number threshold   applies to the total number of RPC numbers assigned to an individual   or entity.  For example, if an individual or entity first requests,   say, 70 numbers, and then later requests 40 numbers, then the request   for the 40 numbers will be assigned via the Specification Required   method.  As long as the total number of numbers assigned does not   exceed 1000, IANA is free to waive the Specification Required   assignment for incremental requests of less than 100 numbers.   If an individual or entity has under 1000 numbers and later requests   an additional set of numbers such that the individual or entity would   be granted over 1000 numbers, then the additional request will   require IESG Approval.13.4.  RPC Authentication Flavor Number Assignment   The second number space is the authentication mechanism identifier,   or "flavor", number.  This number is used to distinguish between   various authentication mechanisms that can be optionally used with an   RPC message.  An authentication identifier is used in the "flavor"   field of the "opaque_auth" structure.13.4.1.  Assignment PolicyAppendix B of this document describes the information to be sent to   IANA to request one or more RPC auth numbers and the rules that   apply.  IANA will store the request for documentary purposes and put   the following information into the public registry:Thurlow                     Standards Track                    [Page 22]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   o  The short identifier string(s)   o  The auth number(s) assigned   o  The short description of purpose and use13.4.2.  Auth Flavors vs. Pseudo-Flavors   Recent progress in RPC security has moved away from new auth flavors   as used by AUTH_DH [DH], and has focused on using the existing   RPCSEC_GSS [RFC2203] flavor and inventing novel GSS-API (Generic   Security Services Application Programming Interface) mechanisms that   can be used with it.  Even though RPCSEC_GSS is an assigned   authentication flavor, use of a new RPCSEC_GSS mechanism with the   Network File System (NFS) ([RFC1094] [RFC1813], and [RFC3530]) will   require the registration of 'pseudo-flavors' that are used to   negotiate security mechanisms in an unambiguous way, as defined by   [RFC2623].  Existing pseudo-flavors have been granted in the decimal   range 390000-390255.  New pseudo-flavor requests will be granted by   IANA within this block on a First Come First Served basis.   For non-pseudo-flavor requests, IANA will begin granting RPC   authentication flavor numbers at 400000 on a First Come First Served   basis to avoid conflicts with currently granted numbers.   For authentication flavors or RPCSEC_GSS mechanisms to be used on the   Internet, it is strongly advised that an Informational or Standards   Track RFC be published describing the authentication mechanism   behaviour and parameters.13.5.  Authentication Status Number Assignment   The final number space is the authentication status or "auth_stat"   values that describe the nature of a problem found during an attempt   to authenticate or validate authentication.  The complete initial   list of these values is found inSection 9 of this document, in the   "auth_stat" enum listing.  It is expected that it will be rare to add   values, but that a small number of new values may be added from time   to time as new authentication flavors introduce new possibilities.   Numbers should be granted on a First Come First Served basis to avoid   conflicts with currently granted numbers.13.5.1.  Assignment PolicyAppendix B of this document describes the information to be sent to   IANA to request one or more auth_stat values and the rules that   apply.  IANA will store the request for documentary purposes, and put   the following information into the public registry:Thurlow                     Standards Track                    [Page 23]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   o  The short identifier string(s)   o  The auth_stat number(s) assigned   o  The short description of purpose and use14.  Security Considerations   AUTH_SYS as described inAppendix A is known to be insecure due to   the lack of a verifier to permit the credential to be validated.   AUTH_SYS SHOULD NOT be used for services that permit clients to   modify data.  AUTH_SYS MUST NOT be specified as RECOMMENDED or   REQUIRED for any Standards Track RPC service.   AUTH_DH as mentioned in Sections8.2 and13.4.2 is considered   obsolete and insecure; see [RFC2695].  AUTH_DH SHOULD NOT be used for   services that permit clients to modify data.  AUTH_DH MUST NOT be   specified as RECOMMENDED or REQUIRED for any Standards Track RPC   service.   [RFC2203] defines a new security flavor, RPCSEC_GSS, which permits   GSS-API [RFC2743] mechanisms to be used for securing RPC.  All non-   trivial RPC programs developed in the future should implement   RPCSEC_GSS-based security appropriately.  [RFC2623] describes how   this was done for a widely deployed RPC program.   Standards Track RPC services MUST mandate support for RPCSEC_GSS, and   MUST mandate support for an authentication pseudo-flavor with   appropriate levels of security, depending on the need for simple   authentication, integrity (a.k.a. non-repudiation), or data privacy.Thurlow                     Standards Track                    [Page 24]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009Appendix A: System Authentication   The client may wish to identify itself, for example, as it is   identified on a UNIX(tm) system.  The flavor of the client credential   is "AUTH_SYS".  The opaque data constituting the credential encodes   the following structure:         struct authsys_parms {            unsigned int stamp;            string machinename<255>;            unsigned int uid;            unsigned int gid;            unsigned int gids<16>;         };   The "stamp" is an arbitrary ID that the caller machine may generate.   The "machinename" is the name of the caller's machine (like   "krypton").  The "uid" is the caller's effective user ID.  The "gid"   is the caller's effective group ID.  "gids" are a counted array of   groups that contain the caller as a member.  The verifier   accompanying the credential should have "AUTH_NONE" flavor value   (defined above).  Note that this credential is only unique within a   particular domain of machine names, uids, and gids.   The flavor value of the verifier received in the reply message from   the server may be "AUTH_NONE" or "AUTH_SHORT".  In the case of   "AUTH_SHORT", the bytes of the reply verifier's string encode an   opaque structure.  This new opaque structure may now be passed to the   server instead of the original "AUTH_SYS" flavor credential.  The   server may keep a cache that maps shorthand opaque structures (passed   back by way of an "AUTH_SHORT" style reply verifier) to the original   credentials of the caller.  The caller can save network bandwidth and   server cpu cycles by using the shorthand credential.   The server may flush the shorthand opaque structure at any time.  If   this happens, the remote procedure call message will be rejected due   to an authentication error.  The reason for the failure will be   "AUTH_REJECTEDCRED".  At this point, the client may wish to try the   original "AUTH_SYS" style of credential.   It should be noted that use of this flavor of authentication does not   guarantee any security for the users or providers of a service, in   itself.  The authentication provided by this scheme can be considered   legitimate only when applications using this scheme and the network   can be secured externally, and privileged transport addresses are   used for the communicating end-points (an example of this is the use   of privileged TCP/UDP ports in UNIX systems -- note that not all   systems enforce privileged transport address mechanisms).Thurlow                     Standards Track                    [Page 25]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009Appendix B: Requesting RPC-Related Numbers from IANA   RPC program numbers, authentication flavor numbers, and   authentication status numbers that must be unique across all networks   are assigned by the Internet Assigned Number Authority.  To apply for   a single number or a block of numbers, electronic mail must be sent   to IANA <iana@iana.org> with the following information:   o  The type of number(s) (program number or authentication flavor      number or authentication status number) sought   o  How many numbers are sought   o  The name of the person or company that will use the number   o  An "identifier string" that associates the number with a service   o  Email address of the contact person for the service that will be      using the number   o  A short description of the purpose and use of the number   o  If an authentication flavor number is sought, and the number will      be a 'pseudo-flavor' intended for use with RPCSEC_GSS and NFS,      mappings analogous to those inSection 4.2 of [RFC2623]   Specific numbers cannot be requested.  Numbers are assigned on a   First Come First Served basis.   For all RPC authentication flavor and authentication status numbers   to be used on the Internet, it is strongly advised that an   Informational or Standards Track RFC be published describing the   authentication mechanism behaviour and parameters.Thurlow                     Standards Track                    [Page 26]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009Appendix C: Current Number Assignments   #   # Sun-assigned RPC numbers   #   # Description/Owner        RPC Program Number        Short Name   # -----------------------------------------------------------------   portmapper                         100000    pmapprog portmap rpcbind   remote stats                       100001    rstatprog   remote users                       100002    rusersprog   nfs                                100003    nfs   yellow pages (NIS)                 100004    ypprog ypserv   mount demon                        100005    mountprog   remote dbx                         100006    dbxprog   yp binder (NIS)                    100007    ypbindprog ypbind   shutdown msg                       100008    wall   yppasswd server                    100009    yppasswdprog yppasswdd   ether stats                        100010    etherstatprog   disk quotas                        100011    rquota   spray packets                      100012    spray   3270 mapper                        100013    ibm3270prog   RJE mapper                         100014    ibmrjeprog   selection service                  100015    selnsvcprog   remote database access             100016    rdatabaseprog   remote execution                   100017    rexec   Alice Office Automation            100018    aliceprog   scheduling service                 100019    schedprog   local lock manager                 100020    lockprog llockmgr   network lock manager               100021    netlockprog nlockmgr   x.25 inr protocol                  100022    x25prog   status monitor 1                   100023    statmon1   status monitor 2                   100024    statmon2   selection library                  100025    selnlibprog   boot parameters service            100026    bootparam   mazewars game                      100027    mazeprog   yp update (NIS)                    100028    ypupdateprog ypupdate   key server                         100029    keyserveprog   secure login                       100030    securecmdprog   nfs net forwarder init             100031    netfwdiprog   nfs net forwarder trans            100032    netfwdtprog   sunlink MAP                        100033    sunlinkmap   network monitor                    100034    netmonprog   lightweight database               100035    dbaseprog   password authorization             100036    pwdauthprog   translucent file svc               100037    tfsprog   nse server                         100038    nseprog   nse activate daemon                100039    nse_activate_prog   sunview help                       100040    sunview_help_progThurlow                     Standards Track                    [Page 27]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   pnp install                        100041    pnp_prog   ip addr allocator                  100042    ipaddr_alloc_prog   show filehandle                    100043    filehandle   MVS NFS mount                      100044    mvsnfsprog   remote user file operations        100045    rem_fileop_user_prog   batched ypupdate                   100046    batch_ypupdateprog   network execution mgr              100047    nem_prog   raytrace/mandelbrot remote daemon  100048    raytrace_rd_prog   raytrace/mandelbrot local daemon   100049    raytrace_ld_prog   remote group file operations       100050    rem_fileop_group_prog   remote system file operations      100051    rem_fileop_system_prog   remote system role operations      100052    rem_system_role_prog   gpd lego fb simulator              100053    [unknown]   gpd simulator interface            100054    [unknown]   ioadmd                             100055    ioadmd   filemerge                          100056    filemerge_prog   Name Binding Program               100057    namebind_prog   sunlink NJE                        100058    njeprog   MVSNFS get attribute service       100059    mvsattrprog   SunAccess/SunLink resource manager 100060    rmgrprog   UID allocation service             100061    uidallocprog   license broker                     100062    lbserverprog   NETlicense client binder           100063    lbbinderprog   GID allocation service             100064    gidallocprog   SunIsam                            100065    sunisamprog   Remote Debug Server                100066    rdbsrvprog   Network Directory Daemon           100067    [unknown]   Network Calendar Program           100068    cmsd cm   ypxfrd                             100069    ypxfrd   rpc.timed                          100070    timedprog   bugtraqd                           100071    bugtraqd                                      100072    [unknown]   Connectathon Billboard - NFS       100073    [unknown]   Connectathon Billboard - X         100074    [unknown]   Sun tool for scheduling rooms      100075    schedroom   Authentication Negotiation         100076    authnegotiate_prog   Database manipulation              100077    attribute_prog   Kerberos authentication daemon     100078    kerbprog   Internal testing product (no name) 100079    [unknown]   Sun Consulting Special             100080    autodump_prog   Event protocol                     100081    event_svc   bugtraq_qd                         100082    bugtraq_qd   ToolTalk and Link Service Project  100083    database service   Consulting Services                100084    [unknown]   Consulting Services                100085    [unknown]   Consulting Services                100086    [unknown]   Jupiter Administration             100087    adm_agent admind                                      100088    [unknown]Thurlow                     Standards Track                    [Page 28]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      100089    [unknown]   Dual Disk support                  100090    libdsd/dsd   DocViewer 1.1                      100091    [unknown]   ToolTalk                           100092    remote_activation_svc   Consulting Services                100093    host_checking   SNA peer-to-peer                   100094    [unknown]   Roger Riggs                        100095    searchit   Robert Allen                       100096    mesgtool   SNA                                100097    [unknown]   SISU                               100098    networked version of CS5   NFS Automount File System          100099    autofs                                      100100    msgboard   event dispatching agent [eventd]   100101    netmgt_eventd_prog   statistics/event logger [netlogd]  100102    netmgt_netlogd_prog   topology display manager [topology]100103    netmgt_topology_prog   syncstat agent [syncstatd]         100104    netmgt_syncstatd_prog   ip packet stats agent [ippktd]     100105    netmgt_ippktd_prog   netmgt config agent [configd]      100106    netmgt_configd_prog   restat agent [restatd]             100107    netmgt_restatd_prog   lpq agent [lprstatd]               100108    netmgt_lprstatd_prog   netmgt activity agent [mgtlogd]    100109    netmgt_mgtlogd_prog   proxy DECnet NCP agent [proxydni]  100110    netmgt_proxydni_prog   topology mapper agent [mapperd]    100111    netmgt_mapperd_prog   netstat agent [netstatd]           100112    netmgt_netstatd_prog   sample netmgt agent [sampled]      100113    netmgt_sampled_prog   X.25 statistics agent [vcstatd]    100114    netmgt_vcstatd_prog   Frame Relay                        100128    [unknown]   PPP agent                          100129    [unknown]   localhad                           100130    rpc.localhad   layers2                            100131    na.layers2   token ring agent                   100132    na.tr   related to lockd and statd         100133    nsm_addr   Kerberos project                   100134    kwarn   ertherif2                          100135    na.etherif2   hostmem2                           100136    na.hostmem2   iostat2                            100137    na.iostat2   snmpv2                             100138    na.snmpv2   Cooperative Console                100139    cc_sender   na.cpustat                         100140    na.cpustat   Sun Cluster SC3.0                  100141    rgmd_receptionist                                      100142    fed   Network Storage                    100143    rdc   Sun Cluster products               100144    nafo   SunCluster 3.0                     100145    scadmd   ASN.1                              100146    amiserv                                      100147    amiaux # BER and DER                                                 encode and decode   Delegate Management Server         100148    dmThurlow                     Standards Track                    [Page 29]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      100149    rkstat                                      100150    ocfserv                                      100151    sccheckd                                      100152    autoclientd                                      100153    sunvts                                      100154    ssmond                                      100155    smserverd                                      100156    test1                                      100157    test2                                      100158    test3                                      100159    test4                                      100160    test5                                      100161    test6                                      100162    test7                                      100163    test8                                      100164    test9                                      100165    test10                                      100166    nfsmapid                                      100167    SUN_WBEM_C_CIMON_HANDLE                                      100168    sacmmd                                      100169    fmd_adm                                      100170    fmd_api                                      100171    [unknown]                                      100172    idmapd   unassigned                         100173 - 100174   snmptrap                           100175    na.snmptrap   unassigned                         100176-100199   unassigned                         100200   MVS/NFS Memory usage stats server  100201    [unknown]   Netapp                             100202-100207   unassigned                         100208-100210   8.0 SunLink SNA RJE                100211    [unknown]   8.0 SunLink SNA RJE                100212    [unknown]                                      100213    ShowMe                                      100214    [unknown]                                      100215    [unknown]   AUTH_RSA Key service               100216    keyrsa   SunSelect PC license service       100217    [unknown]   WWCS (Corporate)                   100218    sunsolve                                      100219    cstatd   X/Open Federated Naming            100220    xfn_server_prog   Kodak Color Management System      100221    kcs_network_io kcs   HA-DBMS                            100222    ha_dbms_serv                                      100223-100225    [unknown]                                      100226    hafaultd   NFS ACL Service                    100227    nfs_acl   distributed lock manager           100228    dlmdThurlow                     Standards Track                    [Page 30]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      100229    metad                                      100230    metamhd                                      100231    nfsauth                                      100232    sadmind                                      100233    ufsd                                      100234    grpservd                                      100235    cachefsd                                      100236    msmprog Media_Server                                      100237    ihnamed                                      100238    ihnetd                                      100239    ihsecured                                      100240    ihclassmgrd                                      100241    ihrepositoryd                                      100242    metamedd rpc.metamedd                                      100243    contentmanager cm                                      100244    symon                                      100245    pld genesil                                      100246    ctid                                            cluster_transport_interface                                      100247    ccd                                            cluster_configuration_db                                      100248    pmfd                                      100249    dmi2_client                                      100250    mfs_admin                                      100251    ndshared_unlink                                      100252    ndshared_touch                                      100253    ndshared_slink                                      100254    cbs control_board_server                                      100255    skiserv                                      100256    nfsxa nfsxattr                                      100257    ndshared_disable                                      100258    ndshared_enable                                      100259    sms_account_admin                                      100260    sms_modem_admin                                      100261    sms_r_login                                      100262    sms_r_subaccount_mgt                                      100263    sms_service_admin                                      100264    session_admin                                      100265    canci_ancs_program                                      100266    canci_sms_program                                      100267    msmp                                      100268    halck                                      100269    halogmsg                                      100270    nfs_id_map                                      100271    ncall                                      100272    hmip                                      100273    repl_mig                                      100274    repl_mig_cbThurlow                     Standards Track                    [Page 31]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   NIS+                               100300    nisplus   NIS+                               100301    nis_cachemgr   NIS+ call back protocol            100302    [unknown]   NIS+ Password Update Daemon        100303    nispasswdd   FNS context update in NIS          100304    fnsypd                                      100305    [unknown]                                      100306    [unknown]                                      100307    [unknown]                                      100308    [unknown]                                      100309    [unknown]   unassigned                         100310 - 100398   nfscksum                           100399    nfscksum   network utilization agent          100400    netmgt_netu_prog   network rpc ping agent             100401    netmgt_rping_prog                                      100402    na.shell   picsprint                          100403    na.picslp                                      100404    traps                                      100405 - 100409 [unknown]                                      100410    jdsagent                                      100411    na.haconfig                                      100412    na.halhost                                      100413    na.hadtsrvc                                      100414    na.hamdstat                                      100415    na.neoadmin                                      100416    ex1048prog   rdmaconfig                         100417    rpc.rdmaconfig   IETF NFSv4 Working Group - FedFS   100418 - 100421                                      100422    mdcommd                                      100423    kiprop krb5_iprop                                      100424    stsf   unassigned                         100425 - 100499   Sun Microsystems                   100500 - 100531 [unknown]                                      100532    ucmmstate                                      100533    scrcmd   unassigned                         100534 - 100999   nse link daemon                    101002    nselinktool   nse link application               101003    nselinkapp   unassigned                         101004 - 101900                                      101901    [unknown]   unassigned                         101902 - 101999   AssetLite                          102000    [unknown]   PagerTool                          102001    [unknown]   Discover                           102002    [unknown]   unassigned                         102003 - 105000   ShowMe                             105001    sharedapp   Registry                           105002    REGISTRY_PROG   Print-server                       105003    print-server   Proto-server                       105004    proto-serverThurlow                     Standards Track                    [Page 32]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   Notification-server                105005    notification-server   Transfer-agent-server              105006    transfer-agent-server   unassigned                         105007 - 110000                                      110001    tsolrpcb                                      110002    tsolpeerinfo                                      110003    tsolboot                                      120001    cmip na.cmip                                      120002    na.osidiscover                                      120003    cmiptrap   unassigned                         120004 - 120099                                      120100    eserver                                      120101    repserver                                      120102    swserver                                      120103    dmd                                      120104    ca   unassigned                         120105 - 120125                                      120126    nf_fddi                                      120127    nf_fddismt7_2   unassigned                         120128 - 150000   pc passwd authorization            150001    pcnfsdprog   TOPS name mapping                  150002    [unknown]   TOPS external attribute storage    150003    [unknown]   TOPS hierarchical file system      150004    [unknown]   TOPS NFS transparency extensions   150005    [unknown]   PC NFS License                     150006    pcnfslicense   RDA                                150007    rdaprog   WabiServer                         150008    wsprog   WabiServer                         150009    wsrlprog   unassigned                         150010 - 160000                                      160001    nihon-cm                                      160002    nihon-ce   unassigned                         160003 - 170099                                      170100    domf_daemon0                                      170101    domf_daemon1                                      170102    domf_daemon2                                      170103    domf_daemon3                                      170104    domf_daemon4                                      170105    domf_daemon5   unassigned                         170106 - 179999                                      180000    cecprog                                      180001    cecsysprog                                      180002    cec2cecprog                                      180003    cesprog                                      180004    ces2cesprog                                      180005    cet2cetprog                                      180006    cet2cetdoneprog                                      180007    cetcomprog                                      180008    cetsysprogThurlow                     Standards Track                    [Page 33]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      180009    cghapresenceprog                                      180010    cgdmsyncprog                                      180011    cgdmcnscliprog                                      180012    cgdmcrcscliprog                                      180013    cgdmcrcssvcproG                                      180014    chmprog                                      180015    chmsysprog                                      180016    crcsapiprog                                      180017    ckptmprog                                      180018    crimcomponentprog                                      180019    crimqueryprog                                      180020    crimsecondaryprog                                      180021    crimservicesprog                                      180022    crimsyscomponentprog                                      180023    crimsysservicesprog                                      180024    csmagtapiprog                                      180025    csmagtcallbackprog                                      180026    csmreplicaprog                                      180027    csmsrvprog                                      180028    cssccltprog                                      180029    csscsvrprog                                      180030    csscopresultprog   unassigned                         180031 - 199999                                      200000    pyramid_nfs                                      200001    pyramid_reserved                                      200002    cadds_image                                      200003    stellar_name_prog                                      200004    [unknown]                                      200005    [unknown]                                      200006    pacl                                      200007    lookupids                                      200008    ax_statd_prog                                      200009    ax_statd2_prog                                      200010    edm                                      200011    dtedirwd                                      200012    [unknown]                                      200013    [unknown]                                      200014    [unknown]                                      200015    [unknown]                                      200016    easerpcd                                      200017    rlxnfs                                      200018    sascuiddprog                                      200019    knfsd                                      200020    ftnfsd ftnfsd_program                                      200021    ftsyncd ftsyncd_program                                      200022    ftstatd ftstatd_program                                      200023    exportmap                                      200024    nfs_metadataThurlow                     Standards Track                    [Page 34]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   unassigned                         200025 - 200200                                      200201    ecoad                                      200202    eamon                                      200203    ecolic                                      200204    cs_printstatus_svr                                      200205    ecodisc   unassigned                         200206 - 300000                                      300001    adt_rflockprog                                      300002    columbine1                                      300003    system33_prog                                      300004    frame_prog1                                      300005    uimxprog                                      300006    rvd                                      300007    entombing daemon                                      300008    account mgmt system                                      300009    frame_prog2                                      300010    beeper access                                      300011    dptuprog                                      300012    mx-bcp                                      300013    instrument-file-access                                      300014    file-system-statistics                                      300015    unify-database-server                                      300016    tmd_msg                                      300017    [unknown]                                      300018    [unknown]                                      300019    automounter access                                      300020    lock server                                      300021    [unknown]                                      300022    office-automation-1                                      300023    office-automation-2                                      300024    office-automation-3                                      300025    office-automation-4                                      300026    office-automation-5                                      300027    office-automation-6                                      300028    office-automation-7                                      300029    local-data-manager                                      300030    chide                                      300031    csi_program                                      300032    [unknown]                                      300033    online-help                                      300034    case-tool                                      300035    delta                                      300036    rgi                                      300037    instrument-config-server                                      300038    [unknown]                                      300039    [unknown]                                      300040    dtia-rpc-server                                      300041    cmsThurlow                     Standards Track                    [Page 35]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300042    viewer                                      300043    aqm                                      300044    exclaim                                      300045    masterplan                                      300046    fig_tool                                      300047    [unknown]                                      300048    [unknown]                                      300049    [unknown]                                      300050    remote-lock-manager                                      300051    [unknown]                                      300052    gdebug                                      300053    ldebug                                      300054    rscanner                                      300055    [unknown]                                      300056    [unknown]                                      300057    [unknown]                                      300058    [unknown]                                      300059    [unknown]                                      300060    [unknown]                                      300061    [unknown]                                      300062    [unknown]                                      300063    [unknown]                                      300064    [unknown]                                      300065    [unknown]                                      300066    nSERVER                                      300067    [unknown]                                      300068    [unknown]                                      300069    [unknown]                                      300070    [unknown]                                      300071    BioStation                                      300072    [unknown]                                      300073    NetProb                                      300074    Logging                                      300075    Logging                                      300076    [unknown]                                      300077    [unknown]                                      300078    [unknown]                                      300079    [unknown]                                      300080    [unknown]                                      300081    [unknown]                                      300082    sw_twin                                      300083    remote_get_login                                      300084    odcprog                                      300085    [unknown]                                      300086    [unknown]                                      300087    [unknown]                                      300088    [unknown]                                      300089    [unknown]Thurlow                     Standards Track                    [Page 36]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300090    [unknown]                                      300091    smartdoc                                      300092    superping                                      300093    distributed-chembench                                      300094    uacman/alfil-uacman                                      300095    ait_rcagent_prog                                      300096    ait_rcagent_appl_prog                                      300097    smart                                      300098    ecoprog                                      300099    leonardo                                      300100    [unknown]                                      300101    [unknown]                                      300102    [unknown]                                      300103    [unknown]                                      300104    [unknown]                                      300105    [unknown]                                      300106    [unknown]                                      300107    [unknown]                                      300108    wingz                                      300109    teidan                                      300110    [unknown]                                      300111    [unknown]                                      300112    [unknown]                                      300113    [unknown]                                      300114    [unknown]                                      300115    [unknown]                                      300116    cadc_fhlockprog                                      300117    highscan                                      300118    [unknown]                                      300119    [unknown]                                      300120    [unknown]                                      300121    opennavigator                                      300122    aarpcxfer                                      300123    [unknown]                                      300124    [unknown]                                      300125    [unknown]                                      300126    groggs                                      300127    licsrv                                      300128    issdemon                                      300129    [unknown]                                      300130    maximize                                      300131    cgm_server                                      300132    [unknown]                                      300133    agent_rpc                                      300134    docmaker                                      300135    docmaker                                      300136    [unknown]                                      300137    [unknown]Thurlow                     Standards Track                    [Page 37]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300138    [unknown]                                      300139    iesx                                      300140    [unknown]                                      300141    [unknown]                                      300142    [unknown]                                      300143    [unknown]                                      300144    smart-mbs                                      300145    [unknown]                                      300146    [unknown]                                      300147    docimage                                      300148    [unknown]                                      300149    dmc-interface                                      300150    [unknown]                                      300151    jss                                      300152    [unknown]                                      300153    arimage                                      300154    xdb-workbench                                      300155    frontdesk                                      300156    dmc                                      300157    expressight-6000                                      300158    graph service program                                      300159    [unknown]                                      300160    [unknown]                                      300161    [unknown]                                      300162    [unknown]                                      300163    [unknown]                                      300164    [unknown]                                      300165    [unknown]                                      300166    [unknown]                                      300167    [unknown]                                      300168    [unknown]                                      300169    [unknown]                                      300170    [unknown]                                      300171    [unknown]                                      300172    [unknown]                                      300173    [unknown]                                      300174    [unknown]                                      300175    [unknown]                                      300176    rlpr                                      300177    nx_hostdprog                                      300178    netuser-x                                      300179    rmntprog                                      300180    [unknown]                                      300181    mipe                                      300182    [unknown]                                      300183    collectorprog                                      300184    uslookup_PROG                                      300185    viewstationThurlow                     Standards Track                    [Page 38]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300186    iate                                      300187    [unknown]                                      300188    [unknown]                                      300189    [unknown]                                      300190    imsvtprog                                      300191    [unknown]                                      300192    [unknown]                                      300193    [unknown]                                      300194    pmdb                                      300195    pmda                                      300196    [unknown]                                      300197    [unknown]                                      300198    trend_idbd                                      300199    rres                                      300200    sd.masterd                                      300201    sd.executiond                                      300202    sd.listend                                      300203    sd.reserve1                                      300204    sd.reserve2                                      300205    msbd                                      300206    stagedprog                                      300207    mountprog                                      300208    watchdprog                                      300209    pms                                      300210    [unknown]                                      300211    session_server_program                                      300212    session_program                                      300213    debug_serverprog                                      300214    [unknown]                                      300215    [unknown]                                      300216    paceprog                                      300217    [unknown]                                      300218    mbus                                      300219    aframes2ps                                      300220    npartprog                                      300221    cm1server                                      300222    cm1bridge                                      300223    sailfrogfaxprog                                      300224    sailfrogphoneprog                                      300225    sailfrogvmailprog                                      300226    wserviceprog arcstorm                                      300227    hld                                      300228    alive                                      300229    radsp                                      300230    radavx                                      300231    radview                                      300232    rsys_prog                                      300233    rsys_progThurlow                     Standards Track                    [Page 39]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300234    fm_rpc_prog                                      300235    aries                                      300236    uapman                                      300237    ddman                                      300238    top                                      300239    [unknown]                                      300240    trendlink                                      300241    licenseprog                                      300242    statuslicenseprog                                      300243    oema_rmpf_svc                                      300244    oema_smpf_svc                                      300245    oema_rmsg_svc                                      300246    grapes-sd                                      300247    ds_master                                      300248    ds_transfer                                      300249    ds_logger                                      300250    ds_query                                      300251    [unknown]                                      300252    [unknown]                                      300253    nsd_prog                                      300254    browser                                      300255    epoch                                      300256    floorplanner                                      300257    reach                                      300258    tactic                                      300259    cachescientific1                                      300260    cachescientific2                                      300261    desksrc_prog                                      300262    photo3d1                                      300263    photo3d2                                      300264    [unknown]                                      300265    soundmgr                                      300266    s6k                                      300267    aims_referenced_                                                text_processor                                      300268    xess                                      300269    ds_queue                                      300270    [unknown]                                      300271    orionscanplus                                      300272    openlink-xx                                      300273    kbmsprog                                      300274    [unknown]                                      300275    futuresource                                      300276    the_xprt                                      300277    cmg_srvprog                                      300278    [unknown]                                      300279    [unknown]                                      300280    frontThurlow                     Standards Track                    [Page 40]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300281    [unknown]                                      300282    [unknown]                                      300283    [unknown]                                      300284    conmanprog                                      300285    jincv2                                      300286    isls                                      300287    systemstatprog                                      300288    fxpsprog                                      300289    callpath                                      300290    axess                                      300291    armor_rpcd                                      300292    armor_dictionary_rpcd                                      300293    armor_miscd                                      300294    filetransfer_prog                                      300295    bl_swda                                      300296    bl_hwda                                      300297    [unknown]                                      300298    [unknown]                                      300299    [unknown]                                      300300    filemon                                      300301    acunetprog                                      300302    rbuild                                      300303    assistprog                                      300304    tog                                      300305    [unknown]                                      300306    sns7000                                      300307    igprog                                      300308    tgprog                                      300309    plc                                      300310    pxman pxlsprog                                      300311    hde_server hdeserver                                      300312    tsslicenseprog                                      300313    rpc.explorerd                                      300314    chrd                                      300315    tbisam                                      300316    tbis                                      300317    adsprog                                      300318    sponsorprog                                      300319    querycmprog                                      300320    [unknown]                                      300321    [unknown]                                      300322    mobil1                                      300323    sld                                                service_locator_daemon                                      300324    linkprog                                      300325    codexdaemonprog                                      300326    drprog                                      300327    ressys_commandsThurlow                     Standards Track                    [Page 41]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300328    stamp                                      300329    matlab                                      300330    sched1d                                      300331    upcprog                                      300332    xferbkch                                      300333    xfer                                      300334    qbthd                                      300335    qbabort                                      300336    lsd                                      300337    geomgrd                                      300338    generic_fts                                      300339    ft_ack                                      300340    lymb                                      300341    vantage                                      300342    cltstd clooptstdprog                                      300343    clui clui_prog                                      300344    testerd tstdprog                                      300345    extsim                                      300346    cmd_dispatch maxm_ems                                      300347    callpath_receive_program                                      300348    x3270prog                                      300349    sbc_lag                                      300350    sbc_frsa                                      300351    sbc_frs                                      300352    atommgr                                      300353    geostrat                                      300354    dbvialu6.2                                      300355    [unknown]                                      300356    fxncprog                                      300357    infopolic                                      300358    [unknown]                                      300359    aagns                                      300360    aagms                                      300361    [unknown]                                      300362    clariion_mgr                                      300363    setcimrpc                                      300364    virtual_protocol_adapter                                      300365    unibart                                      300366    uniarch                                      300367    unifile                                      300368    unisrex                                      300369    uniscmd                                      300370    rsc                                      300371    set                                      300372    desaf-ws/key                                      300373    reeldb                                      300374    nl                                      300375    rmdThurlow                     Standards Track                    [Page 42]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300376    agcd                                      300377    rsynd                                      300378    rcnlib                                      300379    rcnlib_attach                                      300380    evergreen_mgmt_agent                                      300381    fx104prog                                      300382    rui                                                remote_user_interface                                      300383    ovomd                                      300384    [unknown]                                      300385    [unknown]                                      300386    system_server                                      300387    pipecs cs_pipeprog                                                ppktrpc                                      300388    uv-net univision                                      300389    auexe                                      300390    audip                                      300391    mqi                                      300392    eva                                      300393    eeei_reserved_1                                      300394    eeei_reserved_2                                      300395    eeei_reserved_3                                      300396    eeei_reserved_4                                      300397    eeei_reserved_5                                      300398    eeei_reserved_6                                      300399    eeei_reserved_7                                      300400    eeei_reserved_8                                      300401    cprlm                                      300402    wg_idms_manager                                      300403    timequota                                      300404    spiff                                      300405-300414        ov_oem_svc                                      300415    ov_msg_ctlg_svc                                      300416    ov_advt_reg_svc                                      300417-300424  showkron                                      300425    daatd                                      300426    swiftnet                                      300427    ovomdel                                      300428    ovomreq                                      300429    msg_dispatcher                                      300430    pcshare server                                      300431    rcvs                                      300432    fdfserver                                      300433    bssd                                      300434    drdd                                      300435    mif_gutsprog                                      300436    mif_guiprog                                      300437    twolfdThurlow                     Standards Track                    [Page 43]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300438    twscd                                      300439    nwsbumv                                      300440    dgux_mgr                                      300441    pfxd                                      300442    tds                                      300443    ovomadmind                                      300444    ovomgate                                      300445    omadmind                                      300446    nps                                      300447    npd                                      300448    tsa                                      300449    cdaimc   unassigned                         300450-300452                                      300453    ckt_implementation                                      300454    mda-tactical   unassigned                         300455-300458                                      300459    atrrun                                      300460    RoadRunner                                      300461    nas                                      300462    undelete                                      300463    ovacadd                                      300464    tbdesmai                                      300465    arguslm                                      300466    dmd                                      300467    drd                                      300468    fm_help                                      300469    ftransrpc_prog                                      300470    finrisk                                      300471    dg_pc_idisched                                      300472    dg_pc_idiserv                                      300473    apd                                      300474    ap_sspd                                      300475    callpatheventrecorder                                      300476    flc                                      300477    dg_osm                                      300478    dspnamed                                      300479    iqddsrv                                      300480    iqjobsrv                                      300481    tacosxx                                      300482    wheeldbmg                                      300483    cnxmgr_nm_prog                                      300484    cnxmgr_cfg_prog                                      300485    3dsmapper                                      300486    ids                                      300487    imagine_rpc_svc                                      300488    lfn                                      300489    salesnet                                      300490    defaxoThurlow                     Standards Track                    [Page 44]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300491    dbqtsd                                      300492    kms                                      300493    rpc.iced                                      300494    calc2s                                      300495    ptouidprog                                      300496    docsls                                      300497    new                                      300498    collagebdg                                      300499    ars_server                                      300500    ars_client                                      300501    vr_catalog                                      300502    vr_tdb                                      300503    ama                                      300504    evama                                      300505    conama                                      300506    service_process                                      300507    reuse_proxy                                      300508    mars_ctrl                                      300509    mars_db                                      300510    mars_com                                      300511    mars_admch                                      300512    tbpipcip                                      300513    top_acs_svc                                      300514    inout_svc                                      300515    csoft_wp                                      300516    mcfs                                      300517    eventprog                                      300518    dg_pc_idimsg                                      300519    dg_pc_idiaux                                      300520    atsr_gc                                      300521    alarm alarm_prog                                      300522    fts_prog                                      300523    dcs_prog                                      300524    ihb_prog                                      300525    [unknown]                                      300526    [unknown]                                      300527    clu_info_prog                                      300528    rmfm                                      300529    c2sdocd                                      300530    interahelp                                      300531    callpathasyncmsghandler                                      300532    optix_arc                                      300533    optix_ts                                      300534    optix_wf                                      300535    maxopenc                                      300536    cev cev_server                                      300537    sitewideprog                                      300538    drsThurlow                     Standards Track                    [Page 45]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300539    drsdm                                      300540    dasgate                                      300541    dcdbd                                      300542    dcpsd                                      300543    supportlink_prog                                      300544    broker                                      300545    listner                                      300546    multiaccess                                      300547    spai_interface                                      300548    spai_adaption                                      300549    chimera_ci                                                chimera_clientinterface                                      300550    chimera_pi                                                chimera_processinvoker                                      300551    teamware_fl                                                teamware_foundationlevel                                      300552    teamware_sl                                                teamware_systemlevel                                      300553    teamware_ui                                                teamware_userinterface                                      300554    lprm                                      300555    mpsprog                                                Mensuration_Proxy_Server                                      300556    mo_symdis                                      300557    retsideprog                                      300558    slp                                      300559    slm-api                                      300560    im_rpc teamconference                                      300561    license_prog license                                      300562    stuple stuple_prog                                      300563    upasswd_prog                                      300564    gentranmentorsecurity                                      300565    gentranmentorprovider                                      300566    latituded                                                latitude_license_server                                      300567    gentranmentorreq1                                      300568    gentranmentorreq2                                      300569    gentranmentorreq3                                      300570    rj_server                                      300571    gws-rdb                                      300572    gws-mpmd                                      300573    gws-spmd                                      300574    vwcalcd                                      300575    vworad                                      300576    vwsybd                                      300577    vwave                                      300578    online_assistant                                      300579    internet_assistantThurlow                     Standards Track                    [Page 46]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300580    spawnd                                      300581    procmgrg                                      300582    cfgdbd                                      300583    logutild                                      300584    ibis                                      300585    ibisaux                                      300586    aapi                                      300587    rstrt                                      300588    hbeat                                      300589    pcspu                                      300590    empress                                      300591    sched_server                                                LiveScheduler                                      300592    path_server                                                LiveScheduler                                      300593    c2sdmd                                      300594    c2scf                                      300595    btsas                                      300596    sdtas                                      300597    appie                                      300598    dmi                                      300599    pscd                                            panther software corp daemon                                      300600    sisd                                      300601    cpwebserver                                      300602    wwcommo                                      300603    mx-mie                                      300604    mx-mie-debug                                      300605    idmn                                      300606    ssrv                                      300607    vpnserver                                      300608    samserver                                      300609    sams_server                                      300610    chrysalis                                      300611    ddm                                      300612    ddm-is                                      300613    mx-bcp-debug                                      300614    upmrd                                      300615    upmdsd                                      300616    res                                      300617    colortron                                      300618    zrs                                      300619    afpsrv                                      300620    apxft                                      300621    nrp                                      300622    hpid                                      300623    mailwatch                                      300624    fos bc_fcrb_receiverThurlow                     Standards Track                    [Page 47]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300625    cs_sysadmin_svr                                      300626    cs_controller_svr                                      300627    nokia_nms_eai                                      300628    dbg                                      300629    remex                                      300630    cs_bind                                      300631    idm                                      300632    prpasswd                                      300633    iw-pw                                      300634    starrb                                      300635    Impress_Server                                      300636    colorstar                                      300637    gwugui                                      300638    gwsgui                                      300639    dai_command_proxy                                      300640    dai_alarm_server                                      300641    dai_fui_proxy                                      300642    spai_command_proxy                                      300643    spai_alarm_server                                      300644    iris                                      300645    hcxttp                                      300646    updatedb rsched                                      300647    urnd urn                                      300648    iqwpsrv                                      300649    dskutild                                      300650    online                                      300651    nlserv                                      300652    acsm                                      300653    dg_clar_sormsg                                      300654    wwpollerrpc                                      300655    wwmodelrpc                                      300656    nsprofd                                      300657    nsdistd                                      300658    recollect                                      300659    lssexecd lss_res                                      300660    lssagend lss_rea                                      300661    cdinfo                                      300662    sninsr_addon                                      300663    mm-sap                                      300664    ks                                      300665    psched                                      300666    tekdvfs                                      300667    storxll                                      300668    nisse                                      300669    lbadvise                                      300670    atcinstaller                                      300671    atntstarter                                      300672    NetMLThurlow                     Standards Track                    [Page 48]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300673    tdmesmge                                      300674    tdmesmgd                                      300675    tdmesmgt                                      300676    olm                                      300677    mediamanagement                                      300678    rdbprog fieldowsrv                                      300679    rpwdprog rpwd                                      300680    sapi-trace                                      300681    sapi-master-daemon                                      300682    omdcuprog om-dcu                                      300683    wwprocmon                                      300684    tndidprog                                      300685    rkey_setsecretprog                                      300686    asdu_server_prog                                      300687    pwrcntrl                                      300688    siunixd                                      300689    wmapi                                      300690    cross_reference_ole                                      300691    rtc                                      300692    disp                                      300693    sql_compilation_agent                                      300694    tnsysprog                                      300695    ius-sapimd                                      300696    apteam-dx                                      300697    rmsrpc                                      300698    seismic_system                                      300699    remote                                      300700    tt1_ts_event nokia_nms                                      300701    fxrs                                      300702    onlicense                                      300703    vxkey                                      300704    dinis                                      300705    sched2d schedule-2                                      300706    sched3d schedule-3                                      300707    sched4d schedule-4                                      300708    sched5d schedule-5                                      300709    sched6d schedule-6                                      300710    sched7d schedule-7                                      300711    sched8d schedule-8                                      300712    sched9d schedule-9                                      300713    adtsqry                                      300714    adserv                                      300715    adrepserv                                      300716    [unknown]                                      300717    caad                                      300718    caaui                                      300719    cescda                                      300720    vcapiadminThurlow                     Standards Track                    [Page 49]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300721    vcapi20                                      300722    tcfs                                      300723    csed                                      300724    nothand                                      300725    hacb                                      300726    nfauth                                      300727    imlm                                      300728    bestcomm                                      300729    lprpasswd                                      300730    rprpasswd                                      300731    proplistd                                      300732    mikomomc                                      300733    arepa-cas                                      300734    [unknown]                                      300735    [unknown]                                      300736    ando_ts                                      300737    intermezzo                                      300738    ftel-sdh-request                                      300739    ftel-sdh-response                                      300740    [unknown]                                      300741    [unknown]                                      300742    [unknown]                                      300743    [unknown]                                      300744    [unknown]                                      300745    vrc_abb                                      300746    vrc_comau                                      300747    vrc_fanuc                                      300748    vrc_kuka                                      300749    vrc_reis                                      300750    hp_sv6d                                      300751    correntmgr01                                      300752    correntike                                      300753    [unknown]                                      300754    [unknown]                                      300755    intransa_location                                      300756    intransa_management                                      300757    intransa_federation                                      300758    portprot                                      300759    ipmiprot                                      300760    aceapi                                      300761    f6000pss                                      300762    vsmapi_program                                      300763    ubertuple                                      300764    ctconcrpcif                                      300765    mfuadmin                                      300766    aiols                                      300767    dsmrootd                                      300768    htdlThurlow                     Standards Track                    [Page 50]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      300769    caba                                      300770    vrc_cosimir                                      300771    cmhelmd                                      300772    polynsm                                      300773    [unknown]                                      300774    [unknown]                                      300775    [unknown]                                      300776    [unknown]                                      300777    [unknown]                                      300778    [unknown]                                      300779    [unknown]                                      300780    [unknown]                                      300781    dsmrecalld                                      300782    [unknown]                                      300783    [unknown]                                      300784    twrgcontrol                                      300785    twrled                                      300786    twrcfgdb   BMC software                       300787-300886   unassigned                         300887 - 300999   Sun Microsystems                   301000-302000 [ 2000 numbers ]   unassigned                         302001-349999   American Airlines                  350000 - 350999   Acucobol Inc.                      351000 - 351099   The Bristol Group                  351100 - 351249   Amteva Technologies                351250 - 351349                                      351350    wfmMgmtApp                                      351351    wfmMgmtDataSrv                                      351352    wfmMgmtFut1                                      351353    wfmMgmtFut1                                      351354    wfmAPM                                      351355    wfmIAMgr                                      351356    wfmECMgr                                      351357    wfmLookOut                                      351358    wfmAgentFut1                                      351359    wfmAgentFut2   unassigned                         351360 - 351406   Sterling Software ITD              351407    csed                                      351360    sched10d                                      351361    sched11d                                      351362    sched12d                                      351363    sched13d                                      351364    sched14d                                      351365    sched15d                                      351366    sched16d                                      351367    sched17d                                      351368    sched18d                                      351369    sched19dThurlow                     Standards Track                    [Page 51]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      351370    sched20d                                      351371    sched21d                                      351372    sched22d                                      351373    sched23d                                      351374    sched24d                                      351375    sched25d                                      351376    sched26d                                      351377    sched27d                                      351378    sched28d                                      351379    sched29d                                      351380    sched30d                                      351381    sched31d                                      351382    sched32d                                      351383    sched33d                                      351384    sched34d                                      351385    sched35d                                      351386    sched36d                                      351387    sched37d                                      351388    sched38d                                      351389    sched39d                                      351390    consoleserver                                      351391    scheduleserver                                      351392    RDELIVER                                      351393    REVENTPROG                                      351394    RSENDEVENTPROG                                      351395    snapp                                      351396    snapad                                      351397    sdsoodb                                      351398    sdsmain                                      351399    sdssrv                                      351400    sdsclnt                                      351401    sdsreg                                      351402    fsbatch                                      351403    fsmonitor                                      351404    fsdisp                                      351405    fssession                                      351406    fslog                                      351407    svdpappserv                                      351408    gns                                      351409    [unkonwn]                                      351410    [unkonwn]                                      351411    [unkonwn]                                      351412    axi                                      351413    rpcxfr                                      351414    slm                                      351415    smbpasswdd                                      351416    tbdbserv                                      351417    tbprojservThurlow                     Standards Track                    [Page 52]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      351418    genericserver                                      351419    dynarc_ds                                      351420    dnscmdr                                      351421    ipcmdr                                      351422    faild                                      351423    failmon                                      351424    faildebug                                      351425    [unknown]                                      351426    [unknown]                                      351427    siemens_srs                                      351428    bsproxy                                      351429    ifsrpc                                      351430    CesPvcSm                                      351431    FrPvcSm                                      351432    AtmPvcSm                                      351433    radius                                      351434    auditor                                      351435    sft                                      351436    voicemail                                      351437    kis                                      351438    SOFTSERV_NOTIFY                                      351439    dynarpc                                      351440    hc                                      351441    iopas                                      351442    iopcs                                      351443    iopss                                      351444    spcnfs                                      351445    spcvss                                      351446    matilda_sms                                      351447    matilda_brs                                      351448    matilda_dbs                                      351449    matilda_sps                                      351450    matilda_svs                                      351451    matilda_sds                                      351452    matilda_vvs                                      351453    matilda_stats                                      351454    xtrade                                      351455    mapsvr                                      351456    hp_graphicsd                                      351457    berkeley_db                                                berkeley_db_svc                                      351458    io_server                                      351459    rpc.niod                                      351460    rpc.kill                                      351461    hmdisproxy                                      351462    smdisproxy                                      351463    avatard                                      351464    namuThurlow                     Standards Track                    [Page 53]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      351465    BMCSess                                      351466    FENS_Sport                                      351467    EM_CONFIG                                      351468    EM_CONFIG_RESP                                      351469    lodge_proof                                      351470    ARCserveIT-Queue                                      351471    ARCserveIT-Device                                      351472    ARCserveIT-Discover                                      351473    ARCserveIT-Alert                                      351474    ARCserveIT-Database                                      351475    scand1                                      351476    scand2                                      351477    scand3                                      351478    scand4                                      351479    scand5                                      351480    dscv                                      351481    cb_svc                                      351482    [unknown]                                      351483    iprobe                                      351484    omniconf                                      351485    isan   BG Partners                        351486 - 351500                                      351501    mond                                      351502    iqlremote                                      351503    iqlalarm   unassigned                         351504 - 351599   Orion Multisystems                 351600-351855   unassigned                         351856 - 351899   NSP lab                            351900 - 351999   unassigned                         351999 - 352232                                      352233    asautostart                                      352234    asmediad1                                      352235    asmediad2                                      352236    asmediad3                                      352237    asmediad4                                      352238    asmediad5                                      352239    asmediad6                                      352240    asmediad7                                      352241    asmediad8                                      352242    asmediad9                                      352243    asmediad10                                      352244    asmediad11                                      352245    asmediad12                                      352246    asmediad13                                      352247    asmediad14                                      352248    asmediad15                                      352249    asmediad16                                      352250    waruserThurlow                     Standards Track                    [Page 54]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      352251    warlogd                                      352252    warsvrmgr                                      352253    warvfsysd                                      352254    warftpd                                      352255    warnfsd                                      352256    bofproxyc0                                      352257    bofproxys0                                      352258    bofproxyc1                                      352259    bofproxys1                                      352260    bofproxyc2                                      352261    bofproxys2                                      352262    bofproxyc3                                      352263    bofproxys3                                      352264    bofproxyc4                                      352265    bofproxys4                                      352266    bofproxyc5                                      352267    bofproxys5                                      352268    bofproxyc6                                      352269    bofproxys6                                      352270    bofproxyc7                                      352271    bofproxys7                                      352272    bofproxyc8                                      352273    bofproxys8                                      352274    bofproxyc9                                      352275    bofproxys9                                      352276    bofproxyca                                      352277    bofproxysa                                      352278    bofproxycb                                      352279    bofproxysb                                      352280    bofproxycc                                      352281    bofproxysc                                      352282    bofproxycd                                      352283    bofproxysd                                      352284    bofproxyce                                      352285    bofproxyse                                      352286    bofproxycf                                      352287    bofproxysf                                      352288    bofproxypo0                                      352289    bofproxypo1                                      352290    bofproxypo2                                      352291    bofproxypo3                                      352292    bofproxypo4   unassigned                         352293-370000                                      370001    [unknown]                                      370002    [unknown]                                      370003    [unknown]                                      370004    [unknown]                                      370005    [unknown]Thurlow                     Standards Track                    [Page 55]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      370006    [unknown]                                      370007    [unknown]                                      370008    [unknown]                                      370009    [unknown]                                      370010    [unknown]                                      370011    [unknown]                                      370012    [unknown]                                      370013    [unknown]                                      370014    [unknown]                                      370015    [unknown]                                      370016    [unknown]                                      370017    [unknown]                                      370018    [unknown]                                      370019    [unknown]                                      370020    [unknown]                                      370021    [unknown]                                      370022    [unknown]                                      370023    [unknown]                                      370024    [unknown]                                      370025    [unknown]                                      370026    [unknown]                                      370027    [unknown]   unassigned                         370028 - 379999                                      380000    opensna                                      380001    probenet                                      380002    [unknown]                                      380003    license                                      380004    na.3com-remote                                      380005    na.ntp                                      380006    probeutil                                      380007    na.vlb                                      380008    cds_mhs_agent                                      380009    cds_x500_agent                                      380010    cds_mailhub_agent                                      380011    codex_6500_proxy                                      380012    codex_6500_trapd                                      380013    na.nm212                                      380014    cds_mta_metrics_agent                                      380015    [unkonwn]                                      380016    na.caple                                      380017    codexcapletrap   Swiss Re                           380018-380028                                      380029    ncstat                                      380030    ncnfsstat                                      380031    ftams                                      380032    na.isotp                                      380033    na.rfc1006   unassigned                         380034 - 389999Thurlow                     Standards Track                    [Page 56]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   Epoch Systems                      390000 - 390049   Quickturn Systems                  390050 - 390065   Team One Systems                   390066 - 390075   General Electric CRD               390076 - 390085   TSIG NFS subcommittee              390086 - 390089   SoftLab ab                         390090 - 390099   Legato Network Services            390100 - 390115                                      390116    cdsmonitor                                      390117    cdslock                                      390118    cdslicense                                      390119    shm                                      390120    rws                                      390121    cdc   Data General                       390122 - 390141   Perfect Byte                       390142 - 390171   JTS Computer Systems               390172 - 390181   Parametric Technology              390182 - 390191   Voxem                              390192 - 390199   Effix Systems                      390200 - 390299   Motorola                           390300 - 390309   Mobile Data Intl.                  390310 - 390325   Physikalisches Institut            390326 - 390330   Ergon Informatik AG                390331 - 390340   Analog Devices Inc.                390341 - 390348   Interphase Corporation             390349 - 390358   NeWsware                           390359 - 390374   Qualix Group                       390375 - 390379   Xerox Imaging Systems              390380 - 390389   Noble Net                          390390 - 390399   Legato Network Services            390400 - 390499   Client Server Tech.                390500 - 390511   Atria                              390512 - 390517   GE NMR Instruments                 390518 - 390525   Harris Corp.                       390526 - 390530   Unisys                             390531 - 390562   Aggregate Computing                390563 - 390572   Interactive Data                   390573 - 390580   OKG AB                             390581 - 390589   K2 Software                        390591 - 390594   Collier Jackson                    390595 - 390599   Remedy Corporation                 390600 - 390699   Mentor Graphics                    390700 - 390799   AT&T Bell Labs (Lucent)            390800 - 390899   Xerox                              390900 - 390999   Silicon Graphics                   391000 - 391063   Data General                       391064 - 391095   Computer Support Corp.             391096 - 391099   Quorum Software Systems            391100 - 391199Thurlow                     Standards Track                    [Page 57]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   InterLinear Technology             391200 - 391209   Highland Software                  391210 - 391229   Boeing Comp. Svcs.                 391230 - 391249   IBM Sweden                         391250 - 391259   Signature Authority Svc            391260 - 391271   ZUMTOBEL Licht GmbH                391272 - 391283   NOAA/ERL                           391284 - 391299   NCR Corp.                          391300 - 391399   FTP Software                       391400 - 391409   Cadre Technologies                 391410 - 391433   Visionware Ltd (UK)                391434 - 391439   IBR-Partner AG                     391440 - 391449   CAP Programator AB                 391450 - 391459   Reichle+De-Massari AG              391460 - 391474   Swiss Bank Corp (London)           391475 - 391484   Unisys Enterprise Svr              391485 - 391489   Intel - Test Dev. Tech.            391490 - 391499   Ampex                              391500 - 391755                                      391756    naas-spare                                      391757    naas-admin                                      391758    isps                                      391759    isps-admin                                      391760    mars                                      391761    mars-admin                                      391762    attcis_spare0                                      391763    attcis_spare1                                      391764    mail-server                                      391765    mail-server-spare                                      391766    attcis_spare2                                      391767    attcis_spare3                                      391768    attcis_spare4                                      391769    attcis_spare5                                      391770    attcis_spare6                                      391771    attcis_spare7   Integrated Systems, Inc.           391772 - 391779   Parametric Tech., Inc.             391780 - 391789   Ericsson Telecom AB                391790 - 391799   SLAC                               391800 - 391849                                      391850    qhrdata                                      391851    qhrbackup                                      391852    minutedata                                      391853    prefecture                                      391854    supc                                      391855    suadmincrw                                      391856    suadminotas                                      391857    sumessage                                      391858    sublock                                      391859    sumotdThurlow                     Standards Track                    [Page 58]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   staffware dev. (uk)                391860 - 391869   Staffware Dev. (UK)                391870 - 391879                                      391880    namesrvr                                      391881    disksrvr                                      391882    tapesrvr                                      391883    migsrvr                                      391884    pdmsrvr                                      391885    pvrsrvr                                      391886    repacksrvr                                      391887    [unknown]   Convex Computer Corp.              391888 - 391951                                      391952    lookoutsrv                                      391953    lookoutagnt                                      391954    lookoutprxy                                      391955    lookoutsnmp                                      391956    lookoutrmon                                      391957    lookoutfut1                                      391958    lookoutfut2   windward                           391959 - 391967                                      391968    sra_legato                                      391969    sra_legato_imgsvr                                      391970    sra_legato_0                                      391971    sra_legato_1                                      391972    sra_legato_2                                      391973    sra_legato_3                                      391974    sra_legato_4                                      391975    sra_legato_5                                      391976    sra_legato_6                                      391977    sra_legato_7                                      391978    sra_legato_8                                      391979    sra_legato_9   Brooktree Corp.                    391980 - 391989   Cadence        Design Systems      391990 - 391999   J. Frank & Associates              392000 - 392999   Cooperative Solutions              393000 - 393999   Xerox Corp.                        394000 - 395023                                      395024    odbc_sqlretriever   3M                                 395025 - 395091   Digital Zone Intl.                 395092 - 395099   Software Professionals             395100 - 395159   Del Mar Solutions                  395160 - 395164                                      395165    ife-es                                      395166    ife-resmgr                                      395167    ife-aes                                      395168    ife-bite                                      395169    ife-loader                                      395170    ife-satcom                                      395171    ife-seatThurlow                     Standards Track                    [Page 59]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009                                      395172    ife-dbmgr                                      395173    ife-testmgr                                      395174    atrium_server                                      395175    ase_director                                      395176    ase_agent                                      395177    ase_hsm                                      395178    ase_mgr                                      395179    ase_sim   Hewlett-Packard                    395180 - 395194   XES, Inc.                          395195 - 395199   Unitech Products                   395200 - 395249   TransSys                           395250 - 395505   Unisys Govt Systems                395506 - 395519   Bellcore                           395520 - 395529   IBM                                395530 - 395561   AT&T Network Services              395562 - 395571   Data General                       395572 - 395577   Swiss Bank Corp                    395578 - 395597   Swiss Bank Corp                    395598 - 395637   Novell                             395638 - 395643   Computer Associates                395644 - 395650   Omneon Video Networks              395651 - 395656   unassigned                         395657 - 395908   UK Post Office                     395909 - 395924   AEROSPATIALE                       395925 - 395944   Result d.o.o.                      395945 - 395964   DataTools, Inc.                    395965 - 395980   CADIS, Inc.                        395981 - 395990   Cummings Group, Inc.               395991 - 395994   Cadre Technologies                 395995 - 395999   American Airlines                  396000 - 396999   Ericsson Telecom TM Div            397000 - 398023   IBM                                398024 - 398028   Toshiba OME Works                  398029 - 398033   TUSC Computer Systems              398034 - 398289   AT&T                               398290 - 398320   Ontario Hydro                      398321 - 398346   Micrion Corporation                398347 - 398364   unassigned                         398365 - 398591   Pegasystems, Inc.                  398592 - 399616   Spectra Securities Soft            399617 - 399850   QualCom                            399851 - 399866   unassigned                         399867 - 399884   Altris Software Ltd.               399885 - 399899   ISO/IEC WG11                       399900 - 399919   Parametric Technology              399920 - 399949   Dolby Laboratories                 399950 - 399981   unassigned                         399982 - 399991Thurlow                     Standards Track                    [Page 60]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   Xerox PARC                         399992 - 399999   #   Next Inc.                          200100000 - 200199999   Netwise (RPCtool)                  200200000   Concurrent Computer Corp           200200001 - 200200007   AIM Technology                     200300000 - 200399999   TGV                                200400000 - 200499999   #   # Sun-assigned authentication flavor numbers   #   AUTH_NONE       0               /* no authentication, seeRFC 1831 */                                   /* a.k.a. AUTH_NULL */   AUTH_SYS        1               /* unix style (uid+gids),RFC 1831 */                                   /* a.k.a. AUTH_UNIX */   AUTH_SHORT      2               /* short hand unix style,RFC 1831 */   AUTH_DH         3               /* des style (encrypted timestamp) */                                   /* a.k.a. AUTH_DES, seeRFC 2695 */   AUTH_KERB       4               /* kerberos auth, seeRFC 2695 */   AUTH_RSA        5               /* RSA authentication */   RPCSEC_GSS      6               /* GSS-based RPC security for auth,                                      integrity and privacy, RPC 5403 */   AUTH_NW         30001           NETWARE   AUTH_SEC        200000          TSIG NFS subcommittee   AUTH_ESV        200004          SVr4 ES   AUTH_NQNFS      300000          Univ. of Guelph - Not Quite NFS   AUTH_GSSAPI     300001          OpenVision <john.linn@ov.com>   AUTH_ILU_UGEN   300002          Xerox <janssen@parc.xerox.com>                                    - ILU Unsecured Generic Identity   #   #  Small blocks are assigned out of the 39xxxx series of numbers   #   AUTH_SPNEGO     390000                   390000 - 390255 NFS 'pseudo' flavors for RPCSEC_GSS                   390003 - kerberos_v5 authentication,RFC 2623                   390004 - kerberos_v5 with data integrity,RFC 2623                   390005 - kerberos_v5 with data privacy,RFC 2623                   200000000       Reserved                   200100000       NeXT Inc.Thurlow                     Standards Track                    [Page 61]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009Normative References   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate              Requirement Levels",BCP 14,RFC 2119, March 1997.   [RFC2203]  Eisler, M., Chiu, A., and L. Ling, "RPCSEC_GSS Protocol              Specification",RFC 2203, September 1997.   [RFC4506]  Eisler, M., Ed., "XDR: External Data Representation              Standard", STD 67,RFC 4506, May 2006.Informative References   [DH]       Diffie & Hellman, "New Directions in Cryptography", IEEE              Transactions on Information Theory IT-22, November 1976.   [RFC0768]   Postel, J., "User Datagram Protocol", STD 6,RFC 768,              August 1980.   [RFC0793]  Postel, J., "Transmission Control Protocol", STD 7,RFC793, September 1981.   [RFC1094]  Sun Microsystems, "NFS: Network File System Protocol              specification",RFC 1094, March 1989.   [RFC1813]  Callaghan, B., Pawlowski, B., and P. Staubach, "NFS              Version 3 Protocol Specification",RFC 1813, June 1995.   [RFC1831]  Srinivasan, R., "RPC: Remote Procedure Call Protocol              Specification Version 2",RFC 1831, August 1995.   [RFC1833]  Srinivasan, R., "Binding Protocols for ONC RPC Version 2",RFC 1833, August 1995.   [RFC2623]  Eisler, M., "NFS Version 2 and Version 3 Security Issues              and the NFS Protocol's Use of RPCSEC_GSS and Kerberos V5",RFC 2623, June 1999.   [RFC2695]  Chiu, A., "Authentication Mechanisms for ONC RPC",RFC2695, September 1999.   [RFC2743]  Linn, J., "Generic Security Service Application Program              Interface Version 2, Update 1",RFC 2743, January 2000.   [RFC3530]  Shepler, S., Callaghan, B., Robinson, D., Thurlow, R.,              Beame, C., Eisler, M., and D. Noveck, "Network File System              (NFS) version 4 Protocol",RFC 3530, April 2003.Thurlow                     Standards Track                    [Page 62]

RFC 5531        Remote Procedure Call Protocol Version 2        May 2009   [RFC5226]  Narten, T. and H. Alvestrand, "Guidelines for Writing an              IANA Considerations Section in RFCs",BCP 26,RFC 5226,              May 2008.   [VMTP]     Cheriton, D., "VMTP: Versatile Message Transaction              Protocol", Preliminary Version 0.3, Stanford University,              January 1987.   [XRPC]     Birrell, A. D.  & B. J. Nelson, "Implementing Remote              Procedure Calls", XEROX CSL-83-7, October 1983.Author's Address   Robert Thurlow   Sun Microsystems, Inc.   500 Eldorado Boulevard, UBRM05-171   Broomfield, CO 80021   Phone: 877-718-3419   EMail: robert.thurlow@sun.comThurlow                     Standards Track                    [Page 63]

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