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System for high speed network intrusion detection

  • US 20040107361A1
  • Filed: 11/29/2002
  • Published: 06/03/2004
  • Est. Priority Date: 11/29/2002
  • Status: Abandoned Application
First Claim
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1. A method of intrusion detection in a packet based network, the network including a network interface card for receiving data units, placing the received data units into predetermined memory locations, and for generating interrupts when data units are received, the method comprising:

  • receiving an interrupt from the network interface card;

    determining if a data unit in a predetermined memory location is indicative of a network intrusion;

    determining if a subsequent data unit is present in an adjacent predetermined memory location;

    determining if the subsequent data unit, if present, is indicative of a network intrusion; and

    clearing the interrupt if a subsequent data unit is not present.

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