[Asterisk-Users] Problem with BT100 behind iptables firewall

[Wilson Pickett]

> I am trying to get an IP phone working through a linux based iptables
> firewall.  I have an asterisk server with a public IP address.
 
> I ran netcheck from FWD.  It says that it is a Port Restricted Nat.
> I tried the recommended FWD approach, changing the FWD-specific settings
> to the * server's.  I have tried every conveivable config on the phone
> (Yes to NAT traversal with STUN field blank, No to the same, outbound
> proxy as the same IP address as the * server, sending DTMF over the
> different choices...).
> 
> I have control over the iptables firewall, the phone and the * server.

Do you have control over the firewall? Are you forwarding any ports
like 5060 to the phone?