Netmeeting through a linux Masq box

Donn Shumway dshumway@speedchoice.com
Fri, 14 Apr 2000 22:45:49 -0700


Sorry, that was not very clear. What I meant was that in lieu of a real
H.323 mod, autoforwarding tcp ports (see below) and autoforwarding udp from
port 1024 to 65535 allows basic functionality, ie. a workaround. I'll keep
looking for an answer because I also would like the sound and possibly even
video for one on one discussions.

Port 389 tcp - Internet locator server
Port 522 tcp - User locator server
Port 1503 tcp - T.120
Port 1720 tcp - H.323 call setup
Port 1731 tcp - Audio call control
Ports 1024 to 65535 tcp - Secondary tcp connection allow
Ports 1024 to 65535 tcp - H.323 streaming (Realtime Transport Protocol (RTP)
over User Datagram Protocol (UPD))
This all came from the Microsoft site.

As you can see, this opens up an insane number of ports and essentially
bypasses all reasonable security. I have written shell scripts to enable and
disable the setups so I can at least shut down the gaping holes when the
connection is no longer required.

I'll let you know if I find anything else that works. Hopefully someone will
soon write an H.323 module for the kernel (way beyond me I'm afraid) taht
works through ipchains.

Donn
----- Original Message -----
From: "Alan Gore" <agore@uswest.net>
To: <plug-discuss@lists.PLUG.phoenix.az.us>
Sent: Friday, April 14, 2000 7:49 PM
Subject: Re: Netmeeting through a linux Masq box


> >Everything I found also warned that inbound audio wouldn't work. I was
able
> >to verify that last night. Although, in a meeting with four or five
people,
> >I found that the audio becomes a distraction, slows down communication,
> >trivializes comments - people tend to think more about what they say when
> >the write/type it out, and worst of all, there is no log to save when you
> >rely on just audio. All in all, I don't miss the audio. But the
workaround
> >does work for now.
>
> The audio is crucial to me because I will be working on program
development
> with team members in Dallas, Germany and Crete all summer. I will be
> communicating with only one person at a time, and everyone has DSL
> connections. Using the NetMeeting audio is a far better solution than
> juggling an international phone call while I have my NetMeeting session
going.
>
> So what was the workaround that you touched on in that last sentence?
>
>
>
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