[Asterisk-Users] RE: Multiple IAX clients behind a firewall

[Adrian Carter]

Tim Panton wrote:
>
> On 13 Mar 2006, at 11:50, Adrian Carter wrote:
>
>> Its a Dlink DI714P+ router in a completly vanilla out-of-the-box 
>> setup - so if IAX 'just works' - what am I missing?? :)
>
This is the bizare thing... those same clients on SIP do exactly that...
but the NAT clients all end up being only on port 4569 and only allowing
one connection... meanwhile I can have numerous SIP connections that
look just like your IAX ones below... Same client - fires up Idefisk and 
uses his IAX device login and he gets register timeout after the first 
client connects (on port 4569).

Im going to junk the DI714 tomorrow (dlink mumble grumble grrr) and 
replace it with a more .. ahem.. full featured router. See if that helps 
at all. Im just at a loss as to what is different between the SIP 
connections and IAX through this router... there is no discernible 
config 'in the way' that would cause different behavious - beyond the 
port numbers used.

> I'd guess that the router is in a 'preserve source-port' mode, my 
> NAT'd IAX connections look like this
>
> a       192.67.4.80     (D)  255.255.255.255  1720          Unmonitored
> b        82.163.107.203  (D)  255.255.255.255  21398         Unmonitored
> l         82.163.107.203  (D)  255.255.255.255  23020         Unmonitored
> z        212.158.206.61  (D)  255.255.255.255  56598         Unmonitored
>
> Note the middle 2 are from the same address but have different port 
> numbers.
>
> Tim
>
> Tim Panton
> tim at mexuar.com
>
>
>
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-- 
Adrian Carter
Technical Manager
Leading Edge Internet

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