DDOS FLOODINGG ATTACK RESPONSE APPROACH USING DETERMINISTIC PUSHBACK METHOD

摘要

A DDoS attack coping method using a deterministic pushback method is provided to check the IP address of an attack source edge router when a DDoS attach occurs, and filter DDoS attack packets in the attack source edge router, thereby filtering the attack packets flowing into a network in an attack source. A DDoS(Distributed Denial of Service) attack coping method using a deterministic pushback method comprises the following steps of: marking its own IP(Internet Protocol) address to all packets outbound to the other network system from the edge router of a specific network system for checking the IP address of a source edge router for a DDoS attack packet in a damaged system(S100); recombining IP addresses by using the detected DDoS attack packets and acquiring the IP address information of an attack source edge router in the damaged system detecting a DDoS attack(S200); allowing the attack source edge router to receive the deterministic pushback message, check message information, and filter the attack packets the if the damaged system transmits a deterministic pushback message to the attack source edge router(S300).