Defense device, defense method, defense program, and network-attack defense system

摘要

A repeater selecting unit selects at least one repeater that becomes a notification destination of route information for routing a malicious packet through a defense device, from among a plurality of repeaters adjacent to the defense device, based on the information on the attack. A route-information notifying unit notifies the route information for routing the malicious packet through the defense device to the selected repeater. A packet control unit controls a passage of the malicious packet routed to the defense device from the repeater to which the route information has been notified.