| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To rapidly and correctly detect unauthorized accesses, when the unauthorized access cannot be detected or when it takes a long time until detection in conventional methods. <P>SOLUTION: If any one of DDoS attack defence target hosts 21, 22 and 23 is unauthorizingly attacked, an invasion detection defense apparatuses 31, 32, 33 detect the attack, and notify a management apparatus 2 of unauthorized access target host information. The management apparatus 2, which has received the attack target host information, searches information databases of a group of hosts correlated with each other which may have been attacked unauthorizedly, acquires information of another host belonging to the same group as the attack target host whose information has been received, and instructs routers 11, 12, 13, 14 and 15 to perform routing setting for transferring the traffics addressed to this host group, to an intensive-type evasion detection defense apparatus 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
