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Dynamic packet filter utilizing session tracking

  • US 20040013112A1
  • Filed: 05/09/2001
  • Published: 01/22/2004
  • Est. Priority Date: 05/09/2001
  • Status: Active Grant
First Claim
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1. A method of filtering an input packet stream, said method comprising the steps of:

  • establishing a session database adapted to store session related data for a plurality of sessions, each session corresponding to a socket;

    opening a new session upon receipt of a socket not previously stored in said session database;

    recognizing a session associated with a received packet in accordance with its associated socket;

    processing the session data corresponding to said received packet in accordance with a plurality of predefined rules to generate processing results; and

    deciding whether to allow or deny said received packet in accordance with said processing results.

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