Search RFCs

RFC Editor

File formats:

Status:

PROPOSED STANDARD

Updated by:

RFC 6668,RFC 8268,RFC 8308,RFC 8332,RFC 8709,RFC 8758,RFC 9142

Authors:

T. Ylonen
C. Lonvick, Ed.

Stream:

IETF

Source:

secsh (sec)

Cite this RFC:TXT  | XML  |  BibTeX

DOI:  https://doi.org/10.17487/RFC4253

Discuss this RFC: Send questions or comments to the mailing listiesg@ietf.org

Other actions:View Errata  | Submit Errata  | Find IPR Disclosures from the IETF  | View History of RFC 4253

Abstract

The Secure Shell (SSH) is a protocol for secure remote login and othersecure network services over an insecure network.

This document describes the SSH transport layer protocol, whichtypically runs on top of TCP/IP. The protocol can be used as a basisfor a number of secure network services. It provides strongencryption, server authentication, and integrity protection. It mayalso provide compression.

Key exchange method, public key algorithm, symmetric encryptionalgorithm, message authentication algorithm, and hash algorithm areall negotiated.

This document also describes the Diffie-Hellman key exchange methodand the minimal set of algorithms that are needed to implement theSSH transport layer protocol. [STANDARDS-TRACK]

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.