DHCP IP or MAC block

Discussion in 'Server Setup' started by Augie, Jul 10, 2009.

  1. Augie

    Augie Guest

    once activated a DHCP server is there a way to prevent a system to receive
    an IP address? I know you can use a network class ID but I was thinking
    using the MAC for example. My server software is 2003.

    Augie, Jul 10, 2009
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  2. You'd have to create a reservation for every *allowed* address. Then make
    sure no address exists without a reservation.
    This is a huge administrative pain, and gives you no security. Spoofing a
    MAC address is trivial.

    The way you'd do this to prevent unauthorized nodes on your LAN is to use
    fancy expensive network switches. I have no experience with those.
    Lanwench [MVP - Exchange], Jul 10, 2009
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  3. One simple thing is to not leave any unused wall jacks "hot". Unplug them
    at the patch panel in the wiring closet (or equivalent).

    If the users unplug thier company PC to plug in thier own or sneek a small
    hub or switch into the building,...then that is a human problem, not a
    tectnical one. Public User Beatings work for that, they're my favorite.
    Phillip Windell, Jul 10, 2009
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