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Hide MAC from hackers & crackers?

  • 27-12-2005 02:59AM
    #1
    Gaillimhtaibhse
    Closed Accounts Posts: 217 ✭✭


    How can you hide your MAC number from hackers & crackers?


Comments

  • #2
    Syth
    Registered Users, Registered Users 2 Posts: 1,865 ✭✭✭Syth


    You can't.

    On a wireless network the mac address of the destination and source computer are always sent and visible to everyone, otherwise wireless wouldn't work. (Hence why wireless MAC address filtering doesn't work as a security measure).

    If 2 computers are directly connected then the mac address of each is visible. Otherwise they wouldn't be able to communicate. If there is some host between your computer and the destination, then you can't know the MAC address of the destination and the destination can't know the MAC address of your computer.

    Why would you even want to hide your MAC address? How does you knowing that my MAC address is 00:11:24:C5:42:2C decrease my security? MAC address can be changed anyway, so what's the point?


  • #3
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 94,366 Mod ✭✭✭✭Capt'n Midnight


    If both computers are on the same network segment you can do something else. If there is a switch between then then this won't work, because the switch will need the MAC address to send packets to the right card.

    You simply write a network driver that can manipulate MAC's and then change the MAC with every packet. Use the usual hashing algorithms so that other packets are ignored.

    You could use CIPE / PPTP / IPSEC etc to encrypt the contents of the packet.


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