Wireless local or metropolitan area network with intrusion detection features and related methods

  • US 7,224,678 B2
  • Filed: 08/12/2002
  • Issued: 05/29/2007
  • Est. Priority Date: 08/12/2002
  • Status: Active Grant
First Claim
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1. A wireless local or metropolitan area network comprising:

  • a plurality of stations for transmitting data therebetween using a media access layer (MAC), each of said stations having a respective MAC address associated therewith; and

    a policing station for detecting intrusions into the wireless network bymonitoring transmissions among said plurality of stations to detect frame check sequence (FCS) errors from a MAC address; and

    generating an intrusion alert based upon detecting a number of FCS errors for the MAC address exceeding a threshold.

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