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Status:

PROPOSED STANDARD

Obsoletes:

RFC 5389

Authors:

M. Petit-Huguenin
G. Salgueiro
J. Rosenberg
D. Wing
R. Mahy
P. Matthews

Stream:

IETF

Source:

tram (tsv)

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DOI:  https://doi.org/10.17487/RFC8489

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Abstract

Session Traversal Utilities for NAT (STUN) is a protocol that servesas a tool for other protocols in dealing with NAT traversal. It canbe used by an endpoint to determine the IP address and port allocatedto it by a NAT. It can also be used to check connectivity betweentwo endpoints and as a keep-alive protocol to maintain NAT bindings.STUN works with many existing NATs and does not require any specialbehavior from them.

STUN is not a NAT traversal solution by itself. Rather, it is a toolto be used in the context of a NAT traversal solution.

This document obsoletes RFC 5389.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.