Attack packet countermeasure system, attack packet countermeasure, attack packet countermeasure device, and attack packet measures program

摘要

PROBLEM TO BE SOLVED: To control communication from an attack source by a repeater closest to the attack source by uniquely specifying the attack source, even when a server is attacked via the repeater which rewrites the transmitted source information of a packet.;SOLUTION: The system is provided with a communication log storage means, having a plurality of repeaters which rewrite the transmitting source information of the received packet, and a management terminal which transmits a retrieval request to the repeater and stores a communication log that includes a transmitting source address before repeating, a transmitting source address, after repeating by the repeaters, and a destination address; an unauthorized terminal retrieval means for specifying an unauthorized terminal or a repeater at a transmitting origin of the retrieval request, by referring to the communication log storage means, when the retrieval request is input; and a function control means for inputting the retrieval request from the management terminal or other repeaters, outputting the retrieval request to the unauthorized terminal retrieval means, transmitting retrieval results to the management terminal or to other repeaters, when the unauthorized terminal is specified by the unauthorized terminal retrieval means, and transmitting the retrieval request to the repeater at the transmitting destination, when the repeater at the transmitting destination is specified by the unauthorized terminal retrieval means.;COPYRIGHT: (C)2009,JPO&INPIT