NAT Friendly SIP

Document Type Expired Internet-Draft (individual)
Authors Jonathan Rosenberg  , Joel Weinberger  , Henning Schulzrinne 
Last updated 2001-07-24
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Intended RFC status (None)
Expired & archived
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


In this draft, we discuss how SIP can traverse enterprise and residential firewalls and NATs. This environment is challenging because we assume here that the end user has little or no control over the firewall or NAT, and that the firewall or NAT is completely ignorant of SIP


Jonathan Rosenberg (
Joel Weinberger (
Henning Schulzrinne (

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