[OpenSER-Users] port modification is sdp

[Bogdan-Andrei Iancu]

Hi,

But who is changing the IP and port in SDP? The script you sent makes no 
changes on the SDP part of the messages.

regards,
bogdan

Konstantinos Koutsopoulos wrote:
> Hi Bogdan,
>
> thanks for the response, but I actually need the ports to remain the same.
> The address modification is convenient.
>
> Kostas
>
>
> Bogdan-Andrei Iancu wrote:
>   
>> Hi Kostas,
>>
>> If you want to change only the port, try the mangle module:
>>    http://www.openser.org/docs/modules/1.2.x/mangler.html#AEN99
>>
>> Regards,
>> Bogdan
>>
>> Konstantinos Koutsopoulos wrote:
>>     
>>> Hi,
>>>
>>> I am deploying openser 1.2.2-notls on a machine with public IP.
>>> On the same machine I run a sip client (A) that registers with the
>>> above openser.
>>>
>>> On an another machine behind NAT (typical adsl router) I use a sip 
>>> client (B)
>>> to register with the above openser and try to invite sip client A.
>>>
>>> I do not use any NAT-traversal techniques (the outgoing packets from
>>> B are modified by NAT and reach openser, responses are received by
>>> B through NAT due to statefull (?) routing on the NAT).
>>>
>>> The SIP messages reach their destination properly and moreover
>>> the IP addresses in the SDP (from B) are updated by openser
>>> to indicate the external interface of NAT. This is very useful in
>>> my case since the client A sends the media packets to the proper
>>> address (I also configure virtual servers on the adsl router to have
>>> these forwarded to B). However, the port numbers in the SDP are
>>> also updated (usually by an offset of +16) which hinders the media 
>>> session
>>> from A to B since B is expecting the packets on other ports.
>>>
>>> Is there any way to have the ports remain unaltered during the above 
>>> operation?
>>>
>>> Thanks in advance,
>>>
>>> Kostas
>>>
>>>   
>>>       
>>     
>
>
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