BREAK-IN DETECTING DEVICE AND ILLEGAL BREAK-IN MEASURES MANAGEMENT SYSTEM AND BREAK-IN DETECTING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a break-in detecting device which detects illegal break-in by judging from packets, and if illegal break-in occurs, takes measures to prevent illegal break-in.;SOLUTION: In a computer network system, the break-in detecting device 100 is provided with the following: a communication means 110; a packet analyzing means 120 that determines whether or not the illegal break-in is proceeding by analyzing the received packets; a measure means 130 that if it is judged that the illegal break-in is proceeding, performs closing of protocol processing or ports, shutting down of communication and the like; an illegal break-in monitoring means 140 that monitors whether or not the attack of illegal break-in and the like is terminated; and a measure removing means 150 that if it is judged that the attack of illegal break-in and the like is terminated, removes the measures of shutting down of communication and the like.;COPYRIGHT: (C)2002,JPO