asterisk users - Sep 2003 - getting a * to work through at NAT to an outside proxy

Hello
I have my * behind a NAT (Netgear) but on the Netgear DMZ
I have my * register to a Cisco proxy on the outside of the NAT.
The registration works, but the Via and Contact fields still have the inside
address.
Yes, I have nat=yes
Yes, I have fromdomain=ipaddress

Any ideas

sample config

register => 123456789:mypass@10.0.0.1/123456789

[10.0.0.1]
nat=yes
fromdomain=outside ip address


Thanks

Lee Goodman