Using ISA Server 2000 To Block Instant Messaging AIM, MSN, ICQ, YAHOO, ETC...

I want to know how to block Instant Messaging with ISA Server 2000.

I want to know about ISA SERVER 2000 techniques specifically.
I am new to ISA and these are some of the things I need to handle as quickly as possible so I am asking for help.

The top ones I am concerned with are AIM, MSN, YAHOO, ICQ.

Thanks in advance for any help you guys can give
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michaelkirkAuthor Commented:
Thanks but I do not think I can use that approach because I do not have the  ISA clients installed I have configured the WPAD file for  autodiscovery.

PLease let me know if this would work without the clients installed or if you have any other ideas.
Tim HolmanCommented:
There are plenty of downloadable filters that can help solve this problem.  The GFI one is good.
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the gfi web filter will only monitor web traffic it will not allow you to block anything.

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michaelkirkAuthor Commented:
GFI Download Security will allow me to block files, However I was hoping for a more cost efective (FREE) solution.
I do not know if the rest of you have to deal with a no budget attitude but that is what I am up against constantly.
michaelkirkAuthor Commented:
I am new to this.
Do I accept these responses as they come in or accept the one that works for me which will give that person the points???

Tim HolmanCommented:
There's a help button in the top right hand corner which tells you these sorts of things.
Keep the Q open as long as you want.  Once your satisfied with an answer or answers, you can accept them.
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