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Enabling NAC reassessment based on fingerprint change

  • US 8,862,730 B1
  • Filed: 03/28/2006
  • Issued: 10/14/2014
  • Est. Priority Date: 03/28/2006
  • Status: Active Grant
First Claim
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1. A method of providing security for a network, comprising:

  • monitoring network traffic associated with a client computer connected to the network for an activity pattern indicating that a configuration change of the client computer may or may not have occurred, wherein the monitoring is based upon an observation of a trigger in the network traffic;

    detecting the activity pattern;

    accessing a previously stored activity pattern associated with the client computer;

    comparing the previously stored activity pattern with the detected activity pattern to determine a fingerprint difference;

    detecting a configuration change of the client computer if the fingerprint difference exceeds a difference threshold; and

    restricting access by the client computer to the network if the detected activity pattern was not previously associated with the client computer and indicates that the configuration change of the client computer may have occurred.

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