Organizations of all sizes are compelled to do what they can to keep unwanted software from proliferating on their networks. Instant messenger and file-sharing programs pose two of the thorniest risks: The former can be a security hazard, and the latter is a bandwidth hog. Sometimes what makes the situation difficult to deal with is not that programs like IM and P2P are hard to block or keep from being installed, but that some organizations actually need them to be present in certain controlled ways.
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In this article I'll be talking about different techniques you can use to block the access to and the use of unwanted file sharing or instant messenger client software. Some of these approaches may work better for your organization than others, so read for flavor.
Blocking IM and P2P
Step 1: The "easy, but stupid" approach
Step 2: The "block the nexus" approach: IM
Step 3: The "block the nexus" approach: P2P
Step 4: The "block the application" approach
More information from SearchWindowsSecurity.com
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|Serdar Yegulalp is editor of the Windows Power Users Newsletter. Check it out for the latest advice and musings on the world of Windows network administrators -- and please share your thoughts as well! Copyright 2005 TechTarget|