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Method for detecting rogue devices operating in wireless and wired computer network environments

  • US 9,137,670 B2
  • Filed: 03/10/2009
  • Issued: 09/15/2015
  • Est. Priority Date: 02/18/2003
  • Status: Active Grant
First Claim
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1. A computer implemented method, comprising:

  • receiving, at a computing device connected to a network, a wireless Media Access Control (MAC) address for a wireless device connected to the network, wherein the wireless MAC address for the wireless device corresponds to a manufacturer for the wireless device;

    determining that the wireless device is a rogue wireless device, wherein determining includes comparing the wireless MAC address for the wireless device with a list of valid wireless MAC addresses used by authorized wireless devices connected to the network;

    determining a list of wired MAC addresses used by devices connected to the network using wired connections;

    determining that elements of the wireless MAC address for the rogue wireless device match elements of a wired MAC address, wherein determining includes comparing elements of the wireless MAC address for the rogue wireless device with elements of the wired MAC addresses on the list of wired MAC addresses;

    determining that the rogue wireless device is connected to the network over a wired connection based on the match;

    assigning a security risk score to the rogue wireless device, wherein assigning includes using the wireless MAC address corresponding to the manufacturer; and

    displaying the security risk score.

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