Try "siproxd" http://sourceforge.net/projects/siproxd/

Siproxd is an proxy/masquerading daemon for the SIP protocol. It handles registrations of SIP clients on a private IP network and performs rewriting of the SIP message bodies to make SIP connections possible via a masquerading firewall. It allows SIP clients (like kphone, linphone) to work behind an IP masquerading firewall or router.

I tried b2bua from Vocal - but I think it does not support NAT traversal yet.

Regards,

Dhiraj

-----Original Message-----
From: Alex [mailto:alexandre.fiaux@eivd.ch]
Sent: 24 October 2003 11:14
To: serusers@lists.iptel.org
Subject: [Serusers] Outbound proxy

Hello!

I want to realize the following setup:

[serUser]<----------------------------------->[Nat]<----------------------------------->[UA]

(private network) (public network)

Can I do this using a B2BUA, and does somebody already do that?

Whether not, do I have to modifiy something in my ser configuration to allow the UA on the public network to

reach the serUser on the private network?

Alex