asterisk users - Feb 2004 - Request for enhancement - IP dependent ports

I am not a programmer so can not implement this, but I think it may be 
useful.
Asterisk configured to listen on multiple IP addresses,
Then configure RTP ports for each address independently;
So I open 5  ports on one IP and then forward those ports to that IP 
from my firewall.
Then on another IP I can still have hundreds or thousands open for my 
internal users.

That way I can avoid opening many ports to the outside world on my 
firewall as I dont expect more than a few users a day to use this route.