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masterlyar
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Joined: Sat Mar 23, 2019 2:02 pm

Encountering problem with SIP ALG

Sat Mar 23, 2019 2:13 pm

Hi there,

This is my first post on this forum but i'm using a mikrotik RouterBOARD RB3011UIAS-RM since now 2 years.

All is working find with the configuration of my ISP but i have one problem to setup a SIP client behind my NAT rules. I learn documentation about SIP ALG and i was like great this what i need to modify the local client IP in the SIP trame !

But unfortunely this is not working... I can make calls and recieved calls but no sound in the two ways because the SDP local IP isn't change in the SIP trame and so the SIP server cannot comunicate with the client...

The SIP server is contact by the 5062 port number so I setup SIP ALG like this :
/ip firewall service-port> set sip disabled=no ports=5062

And my nat rule :
chain=srcnat action=masquerade out-interface=WAN

What am I doing wrong ?

Thanks !

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