Windows DatabaseebooksStatistical Information

LWE10313 : Ports used by Netmeeting

Symptom:

How to configure your firewall to use Netmeeting

Cause:

Ports used by Netmeeting and their Purpose

Solution:

In order to use MS Netmeeting behind a firewall, you'll need to configure the appropriate ports:

1) TCP (bidirectional) over 389, 522, 1503, 1720 and 1731 (purposes see below)

2) UDP (dynamically assigned): 1024 - 65535 (see below)

Port      Purpose
-------------------------------------
389       Internet Locator Server (TCP)
522       User Location Server (TCP)
1503      T.120 (TCP)
1720      H.323 call setup (TCP)
1731      Audio call control (TCP)
Dynamic   H.323 call control (TCP)
Dynamic   H.323 streaming (UDP)

- when TCP connections on specific ports is enabled, but no secondary UDP connections on dynamically assigned ports,  audio features cannot be used

 


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