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Want to prevent some PCs on a network using an internet connection

Discussion in 'Networking' started by eVILRigby, Sep 30, 2004.

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  1. eVILRigby

    eVILRigby Thread Starter

    Joined:
    Nov 25, 2003
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    Hello,
    we have a network of several Windows XP PCs via a hub. One of the PCs has a modem connected to the internet and the other PCs share the connection. There are a couple of PCs on the network which I want to not be allowed to use the internet, but retain all other network functionality. I thought this would be easy but....

    I tried to disallow use of Explorer and Messenger in XP on the machines themselves (Set access to Programs within Add/Remove Programs screen) but Windows won't allow you to do this. I tried to uninstall and/or delete Explorer components (as a last resort) but wasn't allowed to do this. I did manage to uninstall Messenger, and I've restricted the users to Limited priviledges (as opposed to Admin) so they can't reinstall Messenger.

    I also tried to look at the network settings of the PC which hosts the internet connection, but I couldn't find a way to restrict internet access to some machines, but not others.

    Surely surely there is an easy way to do this within Windows either on the PCs themselves or the internet connection host PC?

    Many thanks,
    eR
     
  2. plucnik

    plucnik

    Joined:
    Aug 19, 2003
    Messages:
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    Each XP machine has local "group policy" settings that the local "administrator" can set. Go to Start>Run and type in mmc. Go to File>Add / Remove Snap In. Chose Group Policy. Close that window. The console will show a group called Local Computer Policy. Expand that. Go to Computer Configuration>Administrative Templates>Windows Components>Internet Explorer. You will see many settings that control the use of IE. "Enable" applies a particular setting. Just some advice.......do a Google search first on local group policy to get some tips on what setting to apply. It can get a bit complicated.
     
  3. eVILRigby

    eVILRigby Thread Starter

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    I had a really good look through the console that you suggested but there isn't an option within the IE section to prevent someone using it all. Thanks for the info though.
     
  4. plucnik

    plucnik

    Joined:
    Aug 19, 2003
    Messages:
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    I think you can do it in a round about way.....in IE, set all the Security levels to the highest settings. That should effectively shut off most if not all internet access through the browser. Then go back to group policy and enable "Security Zone: do not allow users to change policies". That would prevent users from changing the settings back. As I mentioned, a Google search should reveal a lot of ideas on how to do this (some more complicated than others).
     
  5. Bob Cerelli

    Bob Cerelli

    Joined:
    Nov 2, 2002
    Messages:
    22,468
    You can try:

    1. Misconfiguring TCP/IP to have an incorrect gateway or DNS setting
    2. Misconfiguring the web browser to use an incorrect proxy server
    3. Set the registry so they cannot change the IE settings
    4. Make sure they do not have access afterwards to change the TCP/IP settings
     
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