Hi, There are many possible solutions for multiple VoIP users behind the same NAT: 1. For EP2, use a device than can interface several phones with different call signal addresses, e.g. Cisco ATA-186. Set up multiple static mappings, or put in DMZ. 2. For EP2, use a gateway, e.g. Planet VIP-400, that will accept setup on one port, but send the call to the correct phone based on called number. 3. Use endpoints behind NAT2 that allow you to specify ports other than 1720. Configure the NAT to map the various ports to the different EPs. 4. Put another GK, or a switch like Asterisk, behind NAT2. 5. Put your GK, with two network interfaces, around NAT2 (if two public IPs available), or configure the machine to also act as NAT2, if you are restricted to a single IP. 6. Replace NAT2 with one that properly proxies H.323. If you need multiple endpoints behind the same NAT, and have no administrative control over it, you may be out of luck. --Stewart ----- Original Message ----- From: "sgenius sgenius" <gn00081389@xxxxxxxxxxxx> To: <openh323gk-users@xxxxxxxxxxxxxxxxxxxxx> Sent: Friday, July 09, 2004 12:31 PM Subject: NAT through about gnugk > Hello~everybody > i do some NAT through test about gnugk > I use the older version gnugk 2.0.6 > my environment is follow > GK > / \ > / \ > NAT1 NAT2 > | | > EP1 EP2 > NAT throught must to solve two question > 1.the address in h323 potocol have be changed by NAT > GK will register EP's private IP.But gnugk already > slove the question.I check the package by use ethereal > address transform work well in route mode > 2.If EP1 and EP2 is register success in GK and GK setup is route mode > If i is EP1.When i make a call to EP2. > EP1 send a Q.931-SETUP to GK through NAT1,then GK routed the Q.931-SETUP > to NAT2.But NAT2 drop the Q.931-SETUP message.Because NAT2 have not > EP2's static address mapping.If i setup the NAT2 static mapping EP2 > the call will work well. > > setup NAT2 static mapping will solve question 2 > but most voip user can not do NAT2 static mapping > and static mapping only server one voip user behind NAT > i do not know that gnugk have any solve solution about question 2.(public address to NAT) > If have any more good solution for question 2.Pleae tell me ..thanks ------------------------------------------------------- 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/
