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How to block some users from the Internet while allowing others

Learn how to block certain users from the Internet while allowing others on the same LAN in this expert response with enterprise security expert Michael Gregg.

I have a windows LAN network connected to the Internet, but I want to block some users from accessing some sites while I want to block some fully from accessing the Internet but yet be on the LAN. Do you know how I can do this?
There are a number of tools available that can perform such tasks. Not knowing your network, if you are a Microsoft shop ISA is one option. You can use it to control who has access to the Internet and what level of access you want to allow. There are also a host of add-ons for ISA such as any one of the following:

This was last published in August 2007

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