International Journal of Computer Applications
A Distributed Denial of Service (DDOS) attack is a type of Internet attack that disrupts the normal function of the targeted computer network (server). This kind of attacks attempts to make target host resource unavailable to its legal users. Several efforts had made in detection and computation of the DDOS attacks over network, where IDS (Intrusion Detection Systems) are unable to isolate the normal flow of traffic from attacks. So this paper is an introduction of the Optimal Objective Entropy (OOE) based method to detect low-rate DDOS attacks.