[OpenSIPS-Users] How to overcome SIP ALG on Wi-Fi routers

Nabeel nabeelshikder at gmail.com
Thu May 5 22:12:20 CEST 2016


Tito Campen, I took the trace on my OpenSIPS server, which is the receiving
proxy. However, OpenSIPS did not add anything to the server's log itself.

On 5 May 2016 at 21:08, Tito Cumpen <tito at xsvoce.com> wrote:

> Nabel, You should should take a trace at the receiving proxy to verify the
> traffic is even getting there. If there is no sdp received from the UAS you
> would not see rtp traversing at all. Using non Standard points doesn't
> assure you that messaging traffic will traverse.
>
> On Thu, May 5, 2016 at 3:54 PM, Tito Cumpen <tito at xsvoce.com> wrote:
>
>> Adding to Bogdan's point I am successfully using sip tls on port 443
>> without any issues as of yet. It's bypassing some  isp enforced algs as
>> well as those enforced by local routers. :-).
>>
>>
>>
>>
>> On Thu, May 5, 2016 at 3:35 PM, Nabeel <nabeelshikder at gmail.com> wrote:
>>
>>>
>>> Please check the following SIP trace taken within a WiFi network. The
>>> call fails to connect despite the INVITE request and using a non-standard
>>> port. Could this be caused by SIP ALG, or some unopened RTP port on the
>>> router?
>>>
>>> http://pastebin.com/raw/C4iymTbh
>>>
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>>>
>>
>
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