Traversal Using Relays around NAT

<p>Traversal Using Relays around NAT (TURN) is a <a href="/facts/Communications_protocol/5uady7cB">protocol</a> that assists in traversal of <a href="/facts/Network_address_translator/nFweFNfN">network address translators</a> (NAT) or <a href="/facts/Firewall_(networking)/Et2RkJaU">firewalls</a> for multimedia applications. It may be used with the <a href="/facts/Transmission_Control_Protocol/WW4sPrt9">Transmission Control Protocol</a> (TCP) and <a href="/facts/User_Datagram_Protocol/dxLU0D6q">User Datagram Protocol</a> (UDP). It is most useful for clients on networks masqueraded by <a href="/facts/Symmetric_NAT/nFweFNfN">symmetric NAT</a> devices. TURN does not aid in running <a href="/facts/Server_(computing)/dEaYFD7r">servers</a> on well known ports in the private network through a NAT; it supports the connection of a user behind a NAT to only a single peer, as in telephony, for example.
</p><p>TURN is specified by <a href="/facts/RFC_(identifier)/esftTvE7">RFC</a> <a href="https://www.rfc-editor.org/rfc/rfc8656">8656</a>. The TURN URI scheme is documented in <a href="/facts/RFC_(identifier)/esftTvE7">RFC</a> <a href="https://www.rfc-editor.org/rfc/rfc7065">7065</a>.
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Traversal Using Relays around NAT