Technical Summary
Traversal of the Session Initiation Protocol (SIP) and the
sessions it establishes through Network Address Translators
(NATs) is a complex problem. Currently there are many deployment
scenarios and traversal mechanisms for media traffic.
This document aims to provide concrete recommendations and
a unified method for NAT traversal as well as documenting
corresponding flows.
Working Group Summary
Much of the development of this document took place in the SIPPING WG
where it had strong support.
Document Quality
This document defines no new protocol elements.
Earlier versions of the document were thoroughly reviewed within the SIPPING WG.
Francois Audet, Vijay Gurbani, Dan Wing, Ali Keranen and
Jerry Yin provided detailed WG reviews of the document.
In addition, area/cross-area reviews were done by
Remi Denis-Courmant (BEHAVE/TSV area) and Philip Matthews (RAI area).
Dan Wing provided a final review ensuring that the technical
details align with the more recently published BEHAVE WG
documents (e.g., TURN)
Personnel
Mary Barnes is the WG chair shepherd. Robert Sparks is the
responsible Area director.
RFC Editor Note:
Please change the title of the document as follows:
OLD:
Best Current Practices for NAT Traversal for Client-Server SIP
NEW:
NAT Traversal Practices for Client-Server SIP