Re: Simple Proxy for a Linux NAT Box

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Hi Miguel,

when you run GnuGk on your firewall, you usually have 2 interface, one
to the LAN and one to the internet. Keep in mind that GnuGk must be
able to do inbound and outbound connections for Q.931, H.245 and RTP
on those interfaces, not just port 1720.

This is usually done by defining port ranges in the GnuGk config and
opening those ranges in the firewall. See the etc/proxy.ini example.

If you want to keep all ports filtered in the firewall, place GnuGk
outside the firewall and let your endpoints connect through the
firewall using H.460.18/.19.

Regards,
Jan

Miguel A. Novo wrote:
> Hello,
> 
> We have a Linux box acting as our main gateway, with our local LAN natted, and GnuGK running on the Linux box.
> 
> We pretend to use GnuGk as a H.323 proxy for our Polycom ViewStation FX 512 MP, which is already registered at GnuGk.
> 
> The idea is to replace our h.323 netfilter (buggy) module to let the Polycom traverse the nat box, allowing inbound and outbound videoconference calls.
> 
> We have tested outbound calls succesfully, but cannot receive inbound calls. Or so we think.
> 
> Maybe we didn't understand how inbound calls work?. We would to accept any inbound call, without the need registering the external VC at the gatekeeper.
> 
> Is this possible?. How may we dial from outside to reach the internal VC?. May we use its internal h323_ID to reach it?. How?.
> 
> Thank you, and excuse so many questions. I know I need more manual/tutorial readings.
> -- 
> 
> Miguel A. Novo
> Director Técnico de ISIS
> -.-.-.-.-.-.-.-
> Ingeniería de Sistemas Informáticos y Software S.L.
> Avda de Oviedo, 7, 10º B. 33211 Gijón. Asturias
> Tel: 985 99 00 50
> http://www.isis.es
> mnovo@xxxxxxx
> -.-.-.-.-.-.-.- 


-- 
Jan Willamowius, jan@xxxxxxxxxxxxxx, http://www.gnugk.org/

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