[asterisk-users] two sip listening ports for single asterisk

Matthew J. Roth mroth at imminc.com
Tue Nov 18 23:35:12 CST 2008

Rizwan Hisham wrote:
> Is it possible to make single asterisk server listen on two different 
> ports?


There is no way to make a single instance of Asterisk listen on multiple 
ports.  However, you can use an iptables REDIRECT to achieve the same 

To redirect a single port with iptables:

  iptables -t nat -A PREROUTING -i eth0 -p udp --dport 5062 -j REDIRECT 
--to-ports 5060

This example redirects UPD port 5062 to port 5060, which effectively 
allows Asterisk to listen on both of them.  Remember to save the rule so 
that it survives a reboot.


Matthew Roth
InterMedia Marketing Solutions
Software Engineer and Systems Developer

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