Traversal Using Relays around NAT : Relay Extensions to Session Traversal Utilities for NAT
RFC 5766, “Traversal Using Relays around NAT : Relay Extensions to Session Traversal Utilities for NAT”, is a Proposed Standard document published in April 2010 by R. Mahy, P. Matthews, J. Rosenberg. It has since been updated by RFC 8155, RFC 8553. It has been obsoleted by RFC 8656 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
If a host is located behind a NAT, then in certain situations it can be impossible for that host to communicate directly with other hosts (peers). In these situations, it is necessary for the host to use the services of an intermediate node that acts as a communication relay. This specification defines a protocol, called TURN (Traversal Using Relays around NAT), that allows the host to control the operation of the relay and to exchange packets with its peers using the relay. TURN differs from some other relay control protocols in that it allows a client to communicate with multiple peers using a single relay address. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 5766 is hosted at rfc-editor.org. Available in TXT,HTML.
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