Re: [asterisk-users] Two Asterisks behind NAT and need to link them using IAX trunk

Perhaps.  I've never been one to trust that firewalls operate as they should - I've been bitten far too many times by a firewall that doesn't quite behave as you expect.  Also, when diagnosing network connectivity problems, I find that it helps to have the rules in place rather than having to infer the rule.

Tim Panton wrote:

If you are careful, you only need to setup a port forward at one end   of the IAX trunk.  Have one Asterisk register (regularly) with the other. The second asterisk (server) will need to have port 4569 forwarded   through it's router. The first asterisk (client) wont need any port forwarding.  Tim. On 2 Jan 2008, at 10:18, Rob Hillis wrote:    

The reason that IAX2 is considered good for NAT issues is that it   uses only one port for both control messages and voice traffic as   opposed to SIP that uses a predictable port for control messages and   an unpredictable one for voice/video traffic.  If both servers are behind NAT servers, you will need to ensure that   the appropriate UDP port (by default 4569) are forwarded to your   Asterisk servers.  Only this port is required - RTP isn't used by   IAX2.  bilal ghayyad wrote:     

Hi List;  I heared that IAX is good for NATing issues, but I do not know if it can help me in that senario:  I have two Asterisks machines in different sites and both are behind NAT (both have private IP address), I need to link these two asterisks with IAX trunk (if it help really in such senario), but I do not know if it will work without doing special routing settings on the router (like TCP/UDP port mapping or IP forwarding)? How that will be it if possible? Or I have to do a kind of port mapping?  If I will need to use port mapping, then I have to map the TCP and UDP ports that are determined in iax.conf and rtp.conf files at site A for asterisk ip address at site A? Or I have to map the TCP and UDP ports that are in iax.conf and rtp.conf at site B for asterisk ip address at site A? In other words, if I am at site B then I have to go for router B and do mapping for TCP/UDP ports of the asterisk at site B or the asterisk at site A?  Any help. Regards Bilal           ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search.  http://tools.search.yahoo.com/newsearch/category.php?category=shopping  _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com--  asterisk-users mailing list To UNSUBSCRIBE or update options visit:    http://lists.digium.com/mailman/listinfo/asterisk-users        

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