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Network unauthorized access analysis method, network unauthorized access analysis apparatus utilizing the method, and computer-readable recording medium having network unauthorized access analysis program recorded thereon

  • US 6,263,444 B1
  • Filed: 03/05/1998
  • Issued: 07/17/2001
  • Est. Priority Date: 03/11/1997
  • Status: Expired due to Term
First Claim
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1. A method for analyzing an unauthorized access on a network so constructed as to perform communication between information communication stations by using a layered protocol, the network unauthorized access analysis method comprising:

  • a data collecting step for capturing a packet transmitted on the network;

    a data creating step for setting parameters of layered modules according to a layered protocol based on information specified by a previously-read configuration file and filtering the packet obtained from the data collecting step by using the layered modules to reassemble the-fragmented data which is the packet into a layer previously selected from any one of the layers used in the layered protocol in order to create analysis data; and

    a data analyzing step for judging whether an unauthorized access is generated in the analysis data obtained from the data creating step based on the content specified by the previously-read configuration file.

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