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System and method for detection of aberrant network behavior by clients of a network access gateway

  • US 8,543,693 B2
  • Filed: 09/30/2011
  • Issued: 09/24/2013
  • Est. Priority Date: 03/10/2004
  • Status: Active Grant
First Claim
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1. A system for detecting aberrant network, comprising:

  • a first network interface coupled to one or more clients, wherein the system is configured to;

    receive network communications at the first network interface, wherein each of the network communications is associated with a first client;

    determine if aberrant network behavior is occurring with respect to the first client, wherein determining if network behavior is aberrant comprises;

    analyzing the received network communications to determine if a first rule of any of one or more rules corresponding to the network communications associated with the first client,updating a first set of statistical information associated with the first client responsive to a determination that the first rule, corresponding to the network communications, wherein the first set of statistical information is accumulated over a time period, andanalyzing the first set of statistical information to determine if aberrant network behavior is occurring with respect to the first client by applying a set of conditions to the first set of statistical information, each of the set of conditions corresponding to aberrant network behavior and comprising a threshold to be applied to at least a portion of the statistical information.

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