Session Traversal Utilities for NAT (STUN)

This specification has been revised 2 times since RFC 3489 (2003). Each document below formally obsoleted the one before it; the versions still in force are listed first.

Revision timeline

  1. RFC 3489 (2003)
  2. RFC 5389 (2008)
  3. RFC 8489 (2020)

Current version — implement against this

Superseded versions — historical reference only

This lineage is derived automatically from the “obsoletes” relationships recorded in the public RFC Editor index — no editorial judgement is applied to the ordering. The most recent document in the chain is RFC 8489 (February 2020).