thanx for ur reply.. my scenario is something like this | internal logic | | | EP1 --------------->|ext interface1| ------> GK (with public IP)------>|ext interface2| -----------------------> EP2 the end points are all on public IP. Now wat i want is that all communication from GK to EP2 should contain the the IP of "ext interface2" at H323 level. so i make GK Assume that its behind a NAT with public IP as equal to "ext interface2" and it should put this address in all communication between itself(GK) and EP2. I hope this clears things bit more.. and secondly.. i dont want the GK to act in proxy mode..:( thanx for ur help regards ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________________ Posting: mailto:Openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Archive: http://sourceforge.net/mailarchive/forum.php?forum_id=8549 Unsubscribe: http://lists.sourceforge.net/lists/listinfo/openh323gk-users Homepage: http://www.gnugk.org/