I was wondering if in clients in a nat environment need to be in the dmz or need to have ports forwarded for kamailio to be used to connect the clients?  I have setup kamailio with the nat settings but am still only getting one way audio.  chances are it has not been setup correctly but just checking.

If i try to connect the two clients from the same network i can get zrtp and 2 way communication working correctly.  if one of the clients is on a different network the call initiates and answers but zrtp and 2way audio does not work.

kamailio 3.3 running on ec2

ttyl,

Dave