[asterisk-users] asterisk and openvpn and sip

[Giorgio Incantalupo]

Hi all,

I'm trying to connect one phone to a remote asterisk server via openvpn. 
First of all, I put the vpn server on the box hosting asterisk and the 
vpn client on another box, both with public ips.
Then I set the client ip as my phone IP gateway and the remote pbx ip as 
the registrar and outbound proxy.

I see in the phone log register packets are sent but nothing in return. 
Asterisk console shows it tries to give back the packets but they seem 
to be lost somewhere.

I made some tests with my pc setting its gateway with the vpn client IP 
and I can reach the pbx machine (ping, ssh,...) but sipsak gets no response.
It seems ping and ssh response packets are correctly routed but sip 
packets aren't.

I tried to set nat=yes in sip.conf but without result.
Is there any asterisk parameter to set to make it work with openvpn?

Any help really appreciated.

Thank you.

Giorgio