Re: GnuGK 2 Endpoints behind NAT

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Hi Jürgen,

you don't need more than 1 public IP if you have multiple endpoints.
But your description sounds like you have placed your GnuGk inside your
firewall / NAT and thats not a good place for it. It seems like sheer
luck that one of your endpoints works.

The best place for GnuGk is outside your firewall. Then all your
endpoints can live on private IPs and use H.460 NAT traversal to
connect to GnuGk can dial out or be called from the internet.

The other option is to configure port forwarding between your router
with the public IP and GnuGk. But it is much more error prone and I
generally don't recommend it.

Regards,
Jan

-- 
Jan Willamowius, Founder of the GNU Gatekeeper Project
EMail  : jan@xxxxxxxxxxxxxx
Website: http://www.gnugk.org
Support: http://www.willamowius.com/gnugk-support.html

Relaxed Communications GmbH
Frahmredder 91
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Geschäftsführer: Jan Willamowius
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Jürgen Wendler wrote:
> Greetings,
> 
> i have a simple quick question which i can't figure out myself:
> 
> I have a small private network which has one Router and only one public IP from my ISP. In this very small network I have 2 videoconferencing systems from sony (xg80 and xg100). Both are connected to the gnugk, I've setup no authentication (not on gnugk side or on sony side)
> When I call a MCU outside my network through the gnugk from one of both systems (doesn't matter which system) I get connected. When I call with second system afterwards, I can't get connected.
> Now my question:
> Is it possible to have 2 or more systems behind a router with only one public IP and let them connect to a MCU (Tandberg, cisco e.g.) or do I need a second public IP?
> 
> Here is my very basic config for gnugk:
> 
> [Gatekeeper::Main]
> Name=VisionGatekeeper
> EndpointIDSuffix=_vision7639288
> 
> [GkStatus::Auth]
> rule=password
> admin=UZdh380=8
> 
> [RoutedMode]
> GKRouted=1
> H245Routed=1
> CallSignalPort=1721
> AcceptUnregisteredCalls=1
> RemoveH245AddressOnTunneling=0
> RemoveH245AddressFromSetup=0
> SupportNATedEndpoints=1
> TreatUnregisteredNAT=1
> GenerateCallProceeding=1
> EnableH46018=1
> AlwaysRewriteSourceCallSignalAddress=1
> 
> [Proxy]
> Enable=1
> ProxyAlways=1
> 
> [ReplyToRasAddress]
> 79.142.35.0/24=True
> 
> My Public IP is: 79.142.35.177
> 
> Here is the log snippet that is needed I think....or do I have to configure something else on gnugk?
> 
> 2016/04/06 10:27:49.491 1             RasSrv.cxx(393)   RAS     ARQ Received from 79.142.35.177:29620
> 2016/04/06 10:27:49.491 3             RasSrv.cxx(3120)  Reply to saved rasAddress:79.142.35.177:29620
> 2016/04/06 10:27:49.491 3             RasSrv.cxx(3396)  GK      ACF will grant bandwidth of 20480
> 2016/04/06 10:27:49.492 2             RasTbl.cxx(4746)  CallTable::Insert(CALL) Call No. 1, total sessions : 1
> 2016/04/06 10:27:49.492 2             RasSrv.cxx(446)   ACF|79.142.35.177:29620|3873891045_vision7639288|23091|511:dialedDigits|3873891045_vision7639288:h323_ID|false|30-40-de-6c-20-01-00-1f-24-08-a1-c6-87-b4-dd-53|ToBeDecided;
> 2016/04/06 10:27:49.492 3             RasSrv.cxx(266)   RAS     Send to 79.142.35.177:29620
> 
> 2016/04/06 10:27:49.558 3       ProxyChannel.cxx(1878)  Q931s   Received: Setup CRV=23091 from 79.142.35.177:57347
> 2016/04/06 10:27:49.559 2             gkacct.cxx(965)   GKACCT  Successfully logged event 1 for call no. 1
> 2016/04/06 10:27:49.559 3       ProxyChannel.cxx(4811)  GK      Call 1 proxy enabled (H.460.18/.19)
> 2016/04/06 10:27:49.560 3       ProxyChannel.cxx(5155)  Q931s   Call 1 is NAT type 1
> 2016/04/06 10:27:49.560 3       ProxyChannel.cxx(1592)  GK      Call 1 proxy enabled. (ProxyAlways)
> 2016/04/06 10:27:49.560 1       ProxyChannel.cxx(1634)  Call 1: h245Routed=1 proxy=1
> 2016/04/06 10:27:49.560 3       ProxyChannel.cxx(1672)  GK      Call 1 proxy enabled
> 2016/04/06 10:27:49.562 3       ProxyChannel.cxx(8093)  Q931    Connect to 79.142.32.144:1720 from 79.142.32.168:0 successful
> 2016/04/06 10:27:49.708 3       ProxyChannel.cxx(1878)  Q931d   Received: Alerting CRV=23091 from 79.142.32.144:1720
> 2016/04/06 10:27:49.708 2             gkacct.cxx(965)   GKACCT  Successfully logged event 64 for call no. 1
> 2016/04/06 10:27:49.717 3       ProxyChannel.cxx(1878)  Q931d   Received: Connect CRV=23091 from 79.142.32.144:1720
> 2016/04/06 10:27:49.718 2             gkacct.cxx(965)   GKACCT  Successfully logged event 32 for call no. 1
> 2016/04/06 10:27:49.718 3       ProxyChannel.cxx(8896)  H245    Set h245Address to 79.142.32.168:59676
> 2016/04/06 10:27:49.790 3       ProxyChannel.cxx(8776)  H245    Connected from 79.142.35.177:22833 on 79.142.32.168:59676
> 2016/04/06 10:27:49.791 3       ProxyChannel.cxx(8809)  H245    Connect to 79.142.32.144:5601 from 79.142.32.168:0 successful
> 2016/04/06 10:27:49.793 2             RasSrv.cxx(177)   RAS     Read from 79.142.35.177:29620
> 
> 2016/04/06 10:27:49.793 1             RasSrv.cxx(393)   RAS     BRQ Received from 79.142.35.177:29620
> 2016/04/06 10:27:49.793 3             RasSrv.cxx(3787)  Reply to saved rasAddress:79.142.35.177:29620
> 2016/04/06 10:27:49.793 2             RasSrv.cxx(446)   BCF|79.142.35.177|3873891045_vision7639288|20480;
> 2016/04/06 10:27:49.793 3             RasSrv.cxx(266)   RAS     Send to 79.142.35.177:29620
> 
> 
> 2016/04/06 10:28:03.652 1             RasSrv.cxx(393)   RAS     ARQ Received from 79.142.35.177:9101
> 2016/04/06 10:28:03.653 3             RasSrv.cxx(3120)  Reply to saved rasAddress:79.142.35.177:9101
> 2016/04/06 10:28:03.653 3             RasSrv.cxx(3396)  GK      ACF will grant bandwidth of 20480
> 2016/04/06 10:28:03.653 2             RasTbl.cxx(4746)  CallTable::Insert(CALL) Call No. 2, total sessions : 2
> 2016/04/06 10:28:03.654 2             RasSrv.cxx(446)   ACF|79.142.35.177:9101|3142736620_vision7639288|3696|511:dialedDigits|3142736620_vision7639288:h323_ID|false|f5-7a-31-dc-3c-05-00-1f-05-17-04-ed-22-b3-70-e9|ToBeDecided;
> 2016/04/06 10:28:03.654 3             RasSrv.cxx(266)   RAS     Send to 79.142.35.177:9101
> 
> 
> 2016/04/06 10:28:07.659 1             RasSrv.cxx(393)   RAS     ARQ Received from 79.142.35.177:9101
> 2016/04/06 10:28:07.659 3             RasSrv.cxx(3120)  Reply to saved rasAddress:79.142.35.177:9101
> 2016/04/06 10:28:07.660 3             RasSrv.cxx(3396)  GK      ACF will grant bandwidth of 20480
> 2016/04/06 10:28:07.660 3             RasSrv.cxx(3440)  GK      ACF: found existing call no 2
> 2016/04/06 10:28:07.660 2             RasSrv.cxx(446)   ACF|79.142.35.177:9101|3142736620_vision7639288|3696|511:dialedDigits|3142736620_vision7639288:h323_ID|false|f5-7a-31-dc-3c-05-00-1f-05-17-04-ed-22-b3-70-e9| ;
> 2016/04/06 10:28:07.660 3             RasSrv.cxx(266)   RAS     Send to 79.142.35.177:9101
> 
> Can anyone point me to the right direction or give me a hint where I need to look for?
> 
> Thanks in advance
> 
> Jürgen


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