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Does anyone know which ports need blocking to restrict the use of msn messenger on our network ?

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  • Latest Post Latest Post by John A
Member Avatar for John A

Hello,

To prevent the use of MSN Messenger on a network, simply block all outbound TCP packets on port 1863. Of course, there are many ways to get around this block (such as going on web-based MSN login services), but this will block the majority.

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