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Last updated Apr 21, 2026
TURN client to TURN server protocols
| Protocol | Support | Relevant specification |
|---|---|---|
| UDP | ✅ | RFC 5766 ↗︎ |
| TCP | ✅ | RFC 5766 ↗︎ |
| TLS | ✅ | RFC 5766 ↗︎ |
| DTLS | No | draft-petithuguenin-tram-turn-dtls-00 ↗︎ |
TURN client to TURN server protocols
| Protocol | Support | Relevant specification |
|---|---|---|
| TURN (base RFC) | ✅ | RFC 5766 ↗︎ |
| TURN REST API | ✅ (See FAQ) | draft-uberti-behave-turn-rest-00 ↗︎ |
| Origin field in TURN (Multi-tenant TURN Server) | ✅ | draft-ietf-tram-stun-origin-06 ↗︎ |
| ALPN support for STUN & TURN | ✅ | RFC 7443 ↗︎ |
| TURN Bandwidth draft specs | No | draft-thomson-tram-turn-bandwidth-01 ↗︎ |
| TURN-bis (with dual allocation) draft specs | No | draft-ietf-tram-turnbis-04 ↗︎ |
| TCP relaying TURN extension | No | RFC 6062 ↗︎ |
| IPv6 extension for TURN | No | RFC 6156 ↗︎ |
| oAuth third-party TURN/STUN authorization | No | RFC 7635 ↗︎ |
| DTLS support (for TURN) | No | draft-petithuguenin-tram-stun-dtls-00 ↗︎ |
| Mobile ICE (MICE) support | No | draft-wing-tram-turn-mobility-02 ↗︎ |
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description: TURN relays traffic through NATs and firewalls to enable peer-to-peer WebRTC communication. title: What is TURN? image: https://developers.cloudflare.com/realtime/turn/what-is-turn/og.png?v=022e0ed978110535
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