Blocking Web Browsing

by Mitch Tulloch [Published on 21 Aug. 2007 / Last Updated on 21 Aug. 2007]

How to prevent users from accessing the Web except for certain allowed sites.

A common request from admins is how they can limit users to being able to browse only certain websites and not others. One way of doing this is to configure your DNS severs so that they only resolve URLs you want users to be able to access. And in a Terminal Services environment you can also avoid putting DNS entries on the Terminal Server and instead use Hosts files that have pointers to the external DNS namespaces you want to allow access to. Finally, I'd be very interested to hear any other solutions readers might have for this scenario, please email me at with your comments.


Mitch Tulloch is lead author for the Windows Vista Resource Kit from Microsoft Press, which is THE book for IT pros who want to deploy, maintain and support Windows Vista in mid- and large-sized network environments. Mitch is also the author of Introducing Windows Server 2008, the first book from Microsoft Press about the exciting new server platform. For more information on these and other books written by Mitch, see

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The Author — Mitch Tulloch

Mitch Tulloch is a well-known expert on Windows Server administration and cloud computing technologies. He has published over a thousand articles on information technology topics and has written, contributed to or been series editor for over 50 books.

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