STUN

STUN (Session Traversal Utilities for NAT) is an auxiliary protocol for transmitting data around a {{glossary("NAT")}} (Network Address Translator). STUN returns the {{glossary("IP address")}}, {{glossary("port")}}, and connectivity status of a networked computer behind a NAT.

See also

• STUN on Wikipedia
• WebRTC protocols

Technical reference

• Specification