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Method and apparatus for maintaining security in a packetized data communications network

  • US 5,825,750 A
  • Filed: 03/29/1996
  • Issued: 10/20/1998
  • Est. Priority Date: 03/29/1996
  • Status: Expired due to Fees
First Claim
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1. A method for use in securing a packetized data communications network against invalid transmissions, said packetized data communications network including a plurality of user nodes, and an asynchronous portion wherein signals are communicated in data packets, said method comprising the steps of:

  • maintaining a user profile for at least a selected one of said plurality of user nodes, said user profile including profile information regarding network use for said selected one of said plurality of user nodes;

    monitoring the transmission of said data packets in said asynchronous portion of said packetized data communications network to identify a deviation from said user profile;

    analyzing said deviation from said user profile including the step of emulating signaling protocols of said packetized data communications network so as to allow for investigation of said selected one of said plurality of user nodes free from establishment of a communication link between said packetized data communications network and said selected one of said plurality of user nodes; and

    controlling use of said packetized data communications network in response to said step of analyzing.

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