[OpenSIPS-Users] DB-ONLY mode call between two proxies failed.

[Andreas Sikkema]

On Mar 26, 2010, at 3:16 AM, osiris123d wrote:

> I currently have two OpenSIPS proxies set up and sharing the same database
> and if NATed Client A registered with Proxy1 and NATed Client B registered
> with Proxy2, then when Client A calls Client B the call fails.  Is it
> because of the two Active/Active Proxies and the NATed clients?
> 
> When I ngrep I see that the foreign proxy is sending the sip invite to the
> correct public IP:rport, but internally behind the firewall no traffic is
> reaching the client.

This is the behaviour that you're supposed to be expecting. Most NAT implementations are based on src_ip:src_port <-> dest_ip:dest_port tuples and will only allow traffic from dest_ip:dest_port to nat_ip:nat_port to be forwarded to src_ip:src_port. 

-- 
Andreas