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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.<br>
<br>
Tim Panton wrote:
<blockquote
cite="mid:751887B5-1B91-4945-A191-2D1DBE8E5C96@westhawk.co.uk"
type="cite">
<pre wrap="">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:
</pre>
<blockquote type="cite">
<pre wrap="">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:
</pre>
<blockquote type="cite">
<pre wrap="">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
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