[asterisk-users] no sdp or contact replacement using externip

[Gordon Henderson]

On Tue, 16 Jun 2009, Ricardo Martins wrote:

> Yes Gordon. I'm using nat=yes and I don't have an ALG enabled 
> router/firewall. I used the sip debug output on the asterisk(s) and 
> could see the sdp headers as they were gererated by asterisk, with the 
> wrong (internal) address on it.
> 
> Asterisk is sending the audio to the correct way, the public IP of 
> client side NAT. But the client is sending it to the wrong address, the 
> private IP of asterisk side NAT.

Er, in that case, I can't suggest what might be wrong. All my boxes out in 
the field are 1.2 though...

Gordon

> 
> Rgrs, Ricardo.
> 
> 
> Gordon Henderson escreveu:
>
>  On Tue, 16 Jun 2009, Ricardo Martins wrote:
>
> 
>
>  Hi all! Do anybody has a full working environment using externip on an 
> asterisk box behind a nat? I tried with two diferent boxes 
> (Elastix-1.4.24 e Trixbox-1.4.22-3)and the asterisk do not replace 
> neither contact, neither sdp headers info with the externip informed on 
> sip.conf general parameters.
> 
> I used these two statements:
> 
> externip=XXX.XXX.XXX.XXX
> localnet=192.168.200.0/255.255.255.0
> 
> 
> Do anybody in list had those dificulties? That's strange because I could 
> not make this work on two diferent instalations! Trying hard to think 
> about what's missing.
> 
>
>  I have dozens of boxes doing it this way. All "just work".
> 
> Have you nat=yes in there too? Also you did port-forward from the router 
> to the box as well, didn't you?
> 
> Often the router will have a broke SIP ALG which will get in the way too. 
> Turn it off if you can.
> 
> Gordon
> 
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