I had some experience with that trying to allow Netmeeting traffic through
MS Proxy. I think it wasn't as easy as 2 TCP ports. You'll find more info
here:
http://lists.gnac.net/firewalls/mhonarc/firewalls.199911/msg00161.html
(discussion)
http://support.microsoft.com/support/kb/articles/Q243/0/76.ASP (for MS Proxy
2.0)

      DAVID

********************
David Rivera Alonso
Ext. 14459
driveraiberdrola.es
********************

-----Mensaje original-----
De: Bill Walsh [mailto:bwalshWYNTRAC.COM]
Enviado el: miércoles 4 de abril de 2001 23:03
Para: FOCUS-MSSECURITYFOCUS.COM
Asunto: Ports used for inbound Netmeeting 3.0

I plan on implementing Netmeeting 3.0 (the version including with Win2000)
to receive calls strictly for program sharing, not audio/video
conferencing.. I have to open up ports on the firewall to do so, but the
Netmeeting Resource Kit on MS's web site is not very specific regarding
inbound calls, they make reference mainly to outbound calls..

I suspect that it is simply ports 522 and 1503 via TCP, is this correct?
Does anyone have any experience with this?

regards,
bill

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