RFC 8489

Session Traversal Utilities for NAT (STUN), February 2020

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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)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC8489

Discuss this RFC: Send questions or comments to tram@ietf.org

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Abstract

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

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

This document obsoletes RFC 5389.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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