One server I'm working on is sitting behind a symmetric nat. I currently see one thing which I think may cause problems, the Via: field in the header has a private address in it when requests are sent to another server. Is there any way to get the server to re-write that Via: field it appends so that it adds the outside address instead. Or am I mistaking here ? Does anyone else have this setup in a live environment ? If so, what issues are you seeing ? /Tony S -- --- Tony Sarendal - tony.sarendal(a)polarcap.org - sip:tony.sarendal@polarcap.org Cisco/Unix/Babies -= The scorpion replied, "I couldn't help it, it's my nature." =-