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How can I stop Instant Messaging?

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by scottara2

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I have a Microsoft NT 4.0 server running Proxy 2.0.

I need to be able to prevent the use of Instant Messaging whether it be AOL, MSN or any other.

Everyone has to pass through this Proxy server in order to get to the WEB.

Is there any way Ican stop the use of instant messangers via use of the Proxy server?

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by tech

Yes, shut down the ports used by the IM products in Proxy Server. For example, MSN messenger uses port 1863 for communication. You probably also want to disable IRC ports, which are 6665-6669, with 6667 being the most common.

Here's a link with an overview of port numbers for various applications

http://www.chebucto.ns.ca/~rakerman/port-table.html

Hope this helps

Todd V

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