Defense against DoS attacks by multipath routing using the ACO algorithm

In recent years, with the widespread use of the Internet, the number of malicious denial-of-service (DoS) attacks on network servers has increased. Malicious traffic reaches the server through multiple routers, which results in heavy load on many links; thus, load suppression of malicious traffic is important. Therefore, we propose a throughput suppression control scheme using multiple communication routes obtained by ant colony optimization (ACO). The ACO algorithm is used to distribute the routing path. The effectiveness of this proposed scheme is confirmed through computer simulations, which shows that the throughput can be adjusted by the selection probability of the longest route and the number of available routes.