Re: [GnomeMeeting-list] GM without forwarding any port

[Damien Sandras <dsandras seconix com>]

Hello,

Le mercredi 13 avril 2005 à 10:47 +0000, Timothée Lecomte a écrit :
> Hello !
> 
> I'm very interested in using GnomeMeeting to make videoconference. 
> However, my Internet connection is behind a Router/Firewall. I have no 
> access to it, as it is the network of my students' house, administered 
> by people who probably won't accept to forward ports to my machine 
> only...  The Gnomemeeting wizard says it is a symetric NAT.
> 

:(

> Until now, I've used Skype for the voice and the webcam function of MSN 
> Messenger (only webcam, with common ports apparently - the 
> videoconference function doesn't work).
> 
> I paid attention to the FAQ about NAT, but didn't find a clear answer. 
> As I can't forward ports, is there an other solution to get it working ? 
> Can Gatekeeper be useful for me, although I can only install it on my 
> machine, not on the router itself ?
> 

If you can install the gatekeeper on a public IP address, it will work,
but that is unfortunately the only solution I know.

Notice that if you are calling a GnomeMeeting 1.2.x user 
* who is behind NAT, but configured (symmetric NAT with port forwarding
and STUN, or other type of NAT without port forwarding and STUN only),
or 
* who has a public IP, 
it will work because the remote GnomeMeeting will detect you are NATted
and it will transparently fool your NAT router.

That will only work if the remote user you are calling is using
GnomeMeeting 1.2. It won't work if he is using GnomeMeeting 1.0 or
earlier, or if he is using Netmeeting. He can be behind NAT, but
configured appropriately.

The problem will only happen when calling another user in the same case
as you (ie unconfigured symmetric NAT).


> Thanks for your help.
> 
> Timothée Lecomte
> Student at the ENS, Paris
> http://www.ens.fr
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> GnomeMeeting-list gnome org
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-- 
 _      Damien Sandras
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