asterisk users - Nov 2007 - [IAX] Does the client have to use UDP4569 as source port?

Hello

	Since SIP is a bit of a pain to use with NAT firewalls in the
way between clients and *, I'm considering IAX for soft/hardphones.

One thing though: Does the client have to also use UDP4569 as its
source port when connecting to * on UDP4569, or can the client use any
UDP port dynamically, making it easy to have several phones in the LAN
behind the firewall all connecting out to *?

Thank you.

Vincent wrote:
> Hello
> 
> 	Since SIP is a bit of a pain to use with NAT firewalls in the
> way between clients and *, I'm considering IAX for soft/hardphones.
> 
> One thing though: Does the client have to also use UDP4569 as its
> source port when connecting to * on UDP4569, or can the client use any
> UDP port dynamically, making it easy to have several phones in the LAN
> behind the firewall all connecting out to *?
The source port should not matter.