LKBEN10873: Ports used by Netmeeting


This article has not been checked!

LKB | Created: 02/04/2020 | Version: 0 | Language: EN | Rating: 0 | Outdated: False | Marked for deletion: False

Author: Wim Peeters - Keskon GmbH & Co. KG


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

 

About the Author

Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.

Disclaimer:

The information provided in this document is intended for your information only. Lubby makes no claims to the validity of this information. Use of this information is at own risk!