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Getting SIP through Firewalls and NATs

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Jonathan Rosenberg , Henning Schulzrinne , Dale Drew
Last updated 2000-02-23
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document discusses the interaction of the Session Initiation Protocol (SIP) with with Network Address Translators (NATS) and firewalls. We show the difficulties in SIP traversing these devices, and we compare the solutions that might be used.


Jonathan Rosenberg
Henning Schulzrinne
Dale Drew

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)