Security Algorithm for Distributed Denial of Service Attack in Cloud

Abstract: Cloud consists of distributed data centres located at various geographical locations. Distributed denial of service (DDOS) attack is a major trouble to its availability. DDOS is performed in order to disrupt the services provided by the data centres. The attacker can greatly degrade the quality or fully breakdown victim�s network connectivity. The attacker first compromises many agents or hosts and then uses these depletes the target network by using these agents. The main aim of a DDoS attack is to make the victim unable to use the resources. In this paper,a flooding based defence algorithm for DDOS attack is proposed which yields better performance.

Keywords: DDOS, flooding attack, cloud VMM.