Hi Cezar, Do you have multiple phones behind the same NAT? If so, it won't work unless the phones allow you to specify unique ports for call signaling and RTP. Even then, it's an administrative hassle if you have more than two or three. If the NAT box is in the same building as the GK, you could put a second NIC in the GK and connect it to the private LAN. Otherwise, you could put a child GK on the private LAN. For a single phone on a private LAN: Does it register (RCF message on GK console)? If not, check that the phone is configured with the IP address of the GK (discovery can't work across the NAT). If you do see an RCF, does it show the private address of the phone? If not, then your NAT is trying to be "smart" about H.323 and if it doesn't do it right you are in trouble. If you do see the private address in the RCF, and you have SupportNATedEndpoints=1 and ProxyForNAT=1, then outgoing calls should work without doing anything to the NAT, except that you may not hear any audio until the called party answers. To fix that, and enable incoming calls, you need to forward TCP 1720 and whatever RTP ports the phone uses. If you can't use Fast Start and/or H.245 tunneling, you also need to forward TCP port(s) for H.245. Once you have done that and it all works, you may be able to improve performance by turning off ProxyForNAT. The above all assumes that the NAT is not blocking any outgoing UDP or TCP. Good luck, Stewart ----- Original Message ----- From: "Cezar Fistik" <cezar@xxxxxxx> To: <openh323gk-users@xxxxxxxxxxxxxxxxxxxxx> Sent: Monday, May 16, 2005 12:19 AM Subject: gnugk and NAT > Hi all, > > I'm trying to make some ip phones that are physically located in a > network segment with private ip addresses, to register with the > gatekeeper. All the packets are routeed through a router that performs > NAT. I think that I tried everything that I could think of but still > haven't much luck with that. Could you please tell me what ports > should be mapped on the NAT box in order to make this scenario work. > Maybe there are some specific issues? I'd appreciate any help. > > Thanks. > -- > Cezar mailto:cezar@xxxxxxx ------------------------------------------------------- This SF.Net email is sponsored by Oracle Space Sweepstakes Want to be the first software developer in space? Enter now for the Oracle Space Sweepstakes! http://ads.osdn.com/?ad_id=7393&alloc_id=16281&op=click _______________________________________________________ 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/
