[asterisk-users] asterisk and openvpn and sip

[Duncan Turnbull]

Usually this is a routing error with openvpn setup and asterisk thinking 
it needs to route someway other than the vpn. If the originating packets 
have an external ip address asterisk might send them back out another route

Have a look using tcpdump on the server to see where the returned 
packets are destined

Cheers Duncan

Giorgio Incantalupo wrote:
> 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
>
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