[Asterisk-Dev] Multiple ports for SIP listener + minor bug

Jon Pounder JonP at inline.net
Thu Jun 5 13:02:38 MST 2003

why not just setup portforwarding ?
even on the * box itself forwarding to itself on another port that it is 
actually listening on.
or the same thing can be done at your gateway router once it crosses the 

At 12:43 PM 6/5/2003 -0700, you wrote:
>>John Todd wrote:
>>>This is a point of minor inconvenience: is it possible to get chan_sip 
>>>to listen on multiple ports?  I have an instance where a phone is 
>>>blocked from using port 5060 (well, not blocked, but "inappropriately 
>>>translated" by a PIX) and I'd like to simply skip around the offending 
>>>firewall with a different port number. However, at this point that seems 
>>>to require Asterisk to be launched in a different thread with "port=" 
>>>set in sip.conf, which seems to be a bit of overkill.   A better method 
>>>would be to have a comma-separated list of ports that SIP requests would 
>>>be transmitted/received on.
>>I successfully use asterisk's sip listening on port 5061 (sip.conf), 
>>because 5060 is for ser which redirects to asterisk on port 5061 solely 
>>for voicemail.
>>there's no seperate thread for the other sip channel. you mean another 
>>process family?
>That's not quite what I'm looking for, and I know that I can get the whole 
>Asterisk process to listen on a different port. I need Asterisk to listen 
>on multiple ports at the same time.
>I have customers who are being blocked by firewall configurations. 
>Actually, "broken" is a better term, since the PIX is horribly stupid, and 
>you _cannot_ turn it's stupidity off.  So I need to have Asterisk listen 
>on multiple ports so that the calls can get around the firewall - their 
>Cisco 7960 devices can be configured to use different ports.
>>>PS: Line 1808 of chan_sip.c seems to hardcode 5060 as the port, even 
>>>though there is a #define at the top of the file that lists the 
>>>"default" port for SIP in a more flexible default manner.
>>Good catch!
>>I missed that.
>>Reini Urban - Entwicklung - http://inode.at
>Asterisk-Dev mailing list
>Asterisk-Dev at lists.digium.com

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