Firewall/NAT

I have an asterisk server on my lan and have setup 1:1 nat to it using a public IP.   I am running SIP to my TISP with no issues but when a remote user attempts to connect with the X-lite SIP client (which uses STUN), he can hear voice from the server but the server can't hear him.  It is like the RTP packets are getting dropped coming in. 

I have ports 5060 and 10000-20000 forwarded to the asterisk server.  Any ideas on what might be wrong?  Thanks.  -- Bud

This is an asterisk thing in your sip.conf file...

Code:

externip=your_publicIP     ; Asterisk external IP
localnet=192.168.0.0/255.255.0.0     ; Asterisk local private net

Lonnie

Lonnie, You are a stud!  I wonder why it worked with my old netgear router.  Did it have some smarts about the SIP protocol that is not present in monowall?

Thanks for your help!

-- Bud