[GnomeMeeting-devel-list] IP translation vs gk.microtelco.com registration through a firewall

[Bruno Tanqueray <btqy free fr>]

Hi,

I'm an happy man with a new Quicknet PhoneJack Card working with Linux and 
Gnomemeeting. I'm on ADSL, using SuSE Linux 8.1 with the new Gnomemeeting rpm 
version 0.96.1 : everything seems to work perfectly, but...

There is an NAT/PAT Router (french BEWAN, not native H.323 support) to cross !
I've already managed to work with gnomemeeting, and sound/video worked well in 
duplex. Obviously I have to use the wonderful option :

Enable IP translation   -> Yes

Now I want to phone by internet via the gatekeeper gk.microtelco.com
But, at the moment, before to phone someone I have to play with this option 
two times.

1 - If I want to be recorded on the gatekeeper host, I need to uncheck

Enable IP translation   -> No

With

In General -> Directory Settings -> Gatekeeper

Registering method :    Gatekeeper host (It's changing all the time to : not 
to be recorded)
Gatekeeper ID :
Gatekeeper host :       gk.microtelco.com
Gatekeeper alias :      ***mon_alias***
Gatekeeper password :   ***mon_password***

-----------------------

2 - Then, I'm quickly registered (bmac 66 7 159 99)
But without the IP translation checked : I can't receive the song !
So, I have to go back in the menu, pray to stay registered (it's always the 
case) and do :

Enable IP translation   -> Yes

It seems to be strange and not logical, because to be registered on 
ils.seconix.com, I need this IP translation. But like that, it works. I don't 
understand why I can't be registered with the IP translation checked. Each 
time, I've tried to keep it on, I've got :
"Error while registering with Gatekeeper"

With this console message via the command < gnomemeeting -d 5 > :
___________________________
 12:31.751  H323 Cleaner H323    Cleaning up connections
 12:31.754  gnomemeeting RAS     Making request: unregistrationRequest
 12:31.754  gnomemeeting H225RAS Sending PDU: unregistrationRequest 1801
 12:31.755  gnomemeeting RAS     Waiting on response to seqnum=1801 for 3.0 
seconds
 12:32.008   H225 RAS:8295940 H225RAS Receiving PDU: unregistrationConfirm 
1801
 12:32.009   GkMonitor:8297d90 RAS     Background thread ended
 12:32.024   gnomemeeting H323    H323Transport::Close
 12:32.026   H225 RAS:8295940 H225RAS Read error (4): Interrupted system call
 12:32.026   H225 RAS:8295940 RAS     Read error: Interrupted system call
 12:32.027   gnomemeeting H323    H323Transport::CleanUpOnTermination for H225 
RAS:8295940
 12:32.027   gnomemeeting H323    H323Transport::Close
 12:32.040   GMH323Gate...r:082a3bf8 H323UDP Binding to interface: 
0.0.0.0:32915
 12:32.046   GMH323Gate...r:082a3bf8 H225    Started gatekeeper discovery of 
"ip$gk.microtelco.com"
 .
 .
 .
 12:37.093   GMH323Gate...r:082a3bf8 RAS     Gatekeeper discovery on 
interface: my_fix_IP:32917
 12:37.094   GMH323Gate...r:082a3bf8 H225RAS Sending PDU: gatekeeperRequest 
40957
 12:37.094   GMH323Gate...r:082a3bf8 RAS     Gatekeeper discovery on 
interface: my_dyn_IP:32918
 12:37.095   GMH323Gate...r:082a3bf8 H225RAS Sending PDU: gatekeeperRequest 
40957
 12:37.095   GMH323Gate...r:082a3bf8 RAS     Gatekeeper discovery on 
interface: my_dyn_IP:32919
 12:37.095   GMH323Gate...r:082a3bf8 H225RAS Sending PDU: gatekeeperRequest 
40957
 12:42.094    GMH323Gate...r:082a3bf8 RAS     Gatekeeper discovery failed
 12:42.095    GkMonitor:8295940 RAS     Background thread ended
 12:42.105    GMH323Gate...r:082a3bf8 H323    H323Transport::Close
 12:42.105    GMH323Gate...r:082a3bf8 H323    H323Transport::Close
___________________________

3 - After those manipulations, everything works well and I can ring the world.
But, it's a real gymnastic and it took me ages to find it.
Does anybody know how to set up this thing ONCE and properly ?


Thank you and bravo to Damien and his team for this job,
Gnomemeeting is great.

Bruno Tanqueray

Email : btqy free fr




____________________________________________________

PS :

My gnomemeeting main parameters :
-------------------------------

In General -> H.323 Advanced

H.323 V2 Settings (like requested for Quicknet Card)
Enable H.245 tunelling  -> Yes
Enable 'Fast Start'     -> Yes

NAT/PAT Router Support

Enable IP translation   -> No then Yes ;-)
Public IP of the NAT/PAT router :  my_dyn_IP (it's automatic)


General parameters :
-------------------

ADSL link, SuSE 8.1 (kernel 2.4.19), new ixj 1.2.1 module,
My BeWan ADSL NAT/PAT, as FAQ explained for non H.323 firewall :

TCP 1720 open and redirected to my_fix_IP
UDP 5000 to 5003 open and redirected to my_fix_IP
TCP 30000 to 30010 open and redirected to my_fix_IP
(in french we say : C'est plus un firewall, c'est du gruyère !!!)  :-)