Okay, well, it's behind the NAT box, so NetworkInterfaces= line needs to be there. The hidden ip address is our external IP, which is -not- directly attatched to an interface on the gatekeeper server, but instead is natted through. When the line isn't there, I can't connect at all. When the line is there, I can connect with a client on the non-gnugk network, but I can't connect to "ConferMCU", which is OpenMCU. Client side says "ConferMCU is not online." In the telnet interfaces, '?' gives me: ? AllRegistrations RCF|10.42.42.16:1720|ConferMCU:h323_ID|mcu|2087_endp RCF|10.100.100.1:1720|moo3:h323_ID|terminal|6351_endp RCF|10.42.42.249:1720|moo2:h323_ID|terminal|6352_endp Number of Endpoints: 3 ConferMCU is running on the same machine as GnuGK, moo3 is on our '10.10.10.x' network. The reason it's saying "10.100.100.1" is confusing, but it's yanking that IP from one of my vmware interfaces. I can send it a different ip via masquerading, but that seems to be useless in making the connection. moo2 is on the 10.42.42.x network, which is the same as GnuGK, and connects fine with ConferMCU. This is all probably because of the correct ports not being open, right? Is there a list of ports I need open that'd make this easy? (I can define the range for the dynamic ports, but is there anything else?) ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________________ List: Openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Archive: http://sourceforge.net/mailarchive/forum.php?forum_id=8549 Homepage: http://www.gnugk.org/