[asterisk-users] asterisk behind nat

[Leif Neland]

I'm running asterisk on a Freebsd with 2 Nic's.

Inside NIC is 192.168.5.x where the phones are.
Outside NIC used to be a public IP with the ISP's device set to 
bridging, but the new WiMAX router only offers me the public ip 
94.18.x.x on the outside,
and forwarding everything to 192.168.1.50 on the "Outside NIC"

Some of the phones are being disconnected with Asterisk saying "no reply 
to critical packet"

How is Asterisk supposed to be configured?

Currently this:
externip = 94.18.x.x  ; Address that we're going to put in outbound SIP 
messages
                                 ; if we're behind a NAT
localnet = 192.168.5.0          ; Internal NETWORK address
localmask = 255.255.255.0       ; Internal netmask
                                 ; The externip, localnet and localmask 
is used
                                 ; when registering and communication 
with other proxies
                                 ; that we're registered with


tcpbindaddr=0.0.0.0
bindaddr = 0.0.0.0

Leif