[Spce-user] Problem with NAT?

Andrew Pogrebennyk apogrebennyk at sipwise.com
Tue May 29 04:51:07 EDT 2012

Mario, please provide us the pcap trace from spce server (e.g. by
running 'ngrep-sip'). It could be that you are running NAT with SIP ALG
function with changes IP addresses in some headers. Can't be more
specific without trace.

On 05/29/2012 10:46 AM, Mario Contreras wrote:
> I have detected a really big problem, I suppose it's about my clients'
> configuration. When I make a call to any subscriber, it receives the
> call fine, and the conversation begin. The problem is that when the
> subscriber is behind a nat in the negotiation it tells to sipwise server
> that its ip is example, it's its private ip) and instead
> the media works ok, sipwise try con make sip signaling to that private
> ip, and of course the subscriber doesn't answer. I think sipwise thinks
> the call has ended, and it close the comunication.

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