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In the last one decade, cloud computing has evolved as a new and promising computational platform that provides cost effective and scalable computing facility. The merger of SDN technology with the cloud computing environment simplifies the cloud’s networking complexities and significantly improves the manageability, programmability, dynamism, and scalability of the cloud. In the SDN-based cloud, the essential features of SDN, including global view of the whole network, software based traffic analysis, centralized control over the network, etc. greatly improves the DDoS attack detection and mitigation capabilities of the cloud. In this paper, we first discuss about various essential features of SDN that makes it suitable networking technology for cloud computing. Moreover, we propose an approach to detect DDoS attacks in SDN-based cloud by utilizing the features of SDN. The proposed approach can detect the DDoS attacks with very low communicational and computational overhead. Our claims are well supported by the extensive simulation based experiments.
Bhushan et al. (Thu,) studied this question.