[Serusers] Proxy sending ACK on port 5060 instead of on contact port

'Jan Janak' jan at iptel.org
Wed Sep 15 13:53:57 CEST 2004


On 15-09 21:15, Zeus Ng wrote:
> Jan,
> 
> It true that the Request-URI is incorrect. However, I would not jump to
> conclusion that it's Sjphone's problem yet unless it's a known problem with
> their 1.0 version software. 
>
> The capture is on the wan side of a ALG device.
>
> >From my point of perspective, the ALG does not rewrite the address and port
> correctly. That may be the problem.

  I did not know that there was an ALG, I wrote Sjphone because I saw
  the name in the message.

> Looking at fw2's dump, the 200OK (packet 16), the contact address is
> sip:202.125.84.163:1585. A moment later, the same 200OK (packet 17) has
> contact address of sip:202.125.84.1585. If both firewalls are the same, I
> would say it's logic is wrong and causing Sjphone response with wrong
> information. This is why I response in another mail that the contact address
> is different on every other packet.
> 
> Mahesh,
> 
> Could you also send in the ethereal dump inside the ALG as well? That would
> help isolate the problem, whether it's with Sjphone or the ALG.

   Jan.




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