[Serusers] SER + NAT (Allan, please?)

Andrei Pelinescu-Onciul pelinescu-onciul at fokus.fraunhofer.de
Fri Nov 12 10:19:45 CET 2004


On Nov 11, 2004 at 16:25, LBE_SIP at telefonica.net <LBE_SIP at telefonica.net> wrote:
> Hello,
> 
> We are trying to get SIP Express Router and RTP proxy working for NAT
> traversal (as many of you, I think). We have tried all kind of
> configuration files, versions, etc. but the best result we get is always
> the same: the session is stablished, but the media are not. We have
> followed, step by step, Allan's help (thank you, I am the guy that asked
> for your ser.cfg) in his post on Nov 4th
> (http://lists.iptel.org/pipermail/serusers/2004-November/012737.html),
> but we are not able to get it working.
> 
> The problem seems to be that SER does not send the media to the ports
> indicated by SDP, instead it sends them to wrong ports resulting in ICMP
> 'destination unreacheable' errors. As clients we are using two Windows
> Messenger 4.7 in two different ADSL (NATed) lines connecting to SER in a
> public Internet address. The linux box for SER is Red Hat 9.0 and file
> versions are the same as indicated in Allan's post.

Ser doesn't send any media. You mean rtpporxy probably.
> 
> Any suggestions, ideas, ..., please? The deadline is really near and we
> do not know what else to do.

Some network dumps and your ser.cfg might help.


Andrei




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