troubleshooting Question

Blocking MSN / Live using ISA 2006

Avatar of Kryssie
KryssieFlag for United Kingdom of Great Britain and Northern Ireland asked on
Chat / IMMicrosoft Forefront ISA Server
9 Comments1 Solution740 ViewsLast Modified:
I am trying to setup a rule on our ISA 2006 server to block Windows Live Messenger.
I have been able to setup the Deny MSN Messenger rule on ports 1863 & 443 and I can see when monitoring my IP connection that it is identifying these and blocking them at this point - however once this deny rule runs it proceeds to connect using an HTTP Proxy connection.
I have followed instructions in and setup a block msn rule (which doesn't seem to have any effect).
I have filtered through sites and found a list of Signatures for different versions of Messenger - added those to the configure HTTP rule - however still no luck.

Any help on blocking the current MSN/Live Messenger using ISA 2006 server level would be fantastic.

I see a similar question on however it doesn't seem to have an answer.

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