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Multi-Stage Deep Packet Inspection for Lightweight Devices

  • US 20080313738A1
  • Filed: 10/12/2007
  • Published: 12/18/2008
  • Est. Priority Date: 06/15/2007
  • Status: Active Grant
First Claim
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1. A method of inspecting packets to detect an attempt at subverting an information processing system, comprising:

  • (a) determining if a first signature of a received packet matches a signature of a known worm or virus;

    (b) determining if a second signature of the received packet matches a signature of a known application;

    (c) determining if a third signature of the received packet matches a signature of a known intrusion packet; and

    (d) if a match is found in any of the above determinations, sending the received packet to a central verification facility for further analysis.

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