[Asterisk-Users] X-Lite to Asterisk through NAT?

[programmer_ted]

Hi there,

I have an X-Lite phone on my box and I'm trying to register it with a 
remote Asterisk box.  Both the X-Lite and Asterisk are behind a NAT.  I 
know it's a pain to do because of SIP not working well with NATs, but I 
know there are ways to do such a thing...moving the Asterisk box outside 
the NAT is not a possibility at the moment.  One thing we tried was 
setting up a VPN, but I can't have the VPN server and a VPN client 
running on the same machine, because they use the same port 
(non-configurable).  I can't set the VPN up on the Windows XP machine, 
because that only allows one user to be connected, and we need at least two.

Any ideas?

Thanks in advance,
Ted