Firewall Wizards mailing list archives

NetMeeting secure?


From: Don Cox <dcox () kodak com>
Date: Thu, 27 Aug 1998 09:26:39 -0400

Apologies up front if this is not the appropriate mailing list for this
concern.

We are evaluating NetMeeting. I am interested in opinions pertaining to
potential security concerns by
allowing NetMeeting through your corporate firewall.

For example:

1. NetMeeting uses UDP for audio and video.
2. NetMeeting data conferencing features require opening port 1503.
3. Internet Locator Server requires opening port 389.
4. The T.120 data conferencing standard NetMeeting is build around
allows application sharing.
5. The H.323 video conferencing standard NetMeeting is build around uses
a standard IP port to make a connection to a network. The H.323 control
channel can spawn several auxiliary channels that use random IP ports,
making it difficult for firewall security systems to detect and monitor
H.323 traffic.

Any suggestions/comments/alernatives would be greatly appreciated.

Thanks!

--
 Don Cox   mailto:dcox () kodak com   <><





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