On Thu, 15 Jan 2004 22:11:21 +0100, Steffen Engmann <steffen@engmann.de>
wrote:

>Hi,
>
>I'd like to use Microsoft's Netmeeting on a Windows box in my private
>LAN for communicating with Netmeeting users in the Internet through my
>Linux NAT box.
>
>I have patched kernel 2.4.20 for the H.323 modules using netfilter's
>patch-o-matic, finally rebooted, loaded the compiled modules
>(ip_conntrack_h323 and ip_nat_h323) and configured the DNAT and
>forwarding entries in the firewall.
>
>Now I can set up Netmeeting connections with hosts in the Internet, but
>only data applications go through (chat, application sharing), no voice,
>no video. Both hosts even don't send a single UDP packet for
>voice/video, thus I assume that something's wrong with the H.323
>negotiation. (How can I check whether the h323 modules are really
>performing some action at all?)
>Voice/video works fine inside the private LAN.
>
>Any ideas?
>
>Thanks for your assistance,
> Steffen

How about your firewall? You will need to open TCP ports 1503, 1718-1721
and 1731. Also all UDP ports above 1024. Using the modules, as the
machine behind the firewall, you must be the one to initiate the
connection.

If you are feeling ambitious, you may want to use a gatekeeper instead.
I am using this one.

http://www.gnugk.org/h323download.html

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Or just repeating what it was you heard."
Grace Slick
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