| 摘要 |
PURPOSE: An ID stealth prevention method is provided to register plural disguised secret numbers having an arrangement similar to a real secret number corresponding to an ID, and to reject all the request for accessing a network while alarming the access requester if an input secret number is included in the registered disguised secret numbers. CONSTITUTION: The method comprises steps of waiting for an access request(S110), the server repeatedly checking if there exists an access request from a terminal via a gateway(S120), repeatedly checking if an ID and a secret number are input from a terminal in a case that an access request is input(S130, S140), the server comparing the input ID and the secret number with the stored ID, the secret number and the disguised secret number(S150), determining if the input ID is effective based on the comparison result(S160), determining if the input secret number is effective in a case that the input ID is effective(S170), transmitting an access permission control signal to the gateway in a case that the input secret number is effective(S190), determining if the input secret number is included in the registered disguised secret numbers in a case that the input secret number is not effective(S180), transmitting an error message to the terminal via the gateway in a case that the input secret number is not included in the registered disguised secret numbers(S200), transmitting an access rejection control signal to the gateway in a case that the input secret number is included in the registered disguised secret numbers(S210), registering the input ID as an illegal ID with the disguised secret number at a database(S220), and transmitting an alarm message to an access requester via an e-mail(S230).
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