Abstract
Software-Defined Networking (SDN) is a centralized, cost-effective, programmable and agile future networking system. As the current networks are complicated and difficult to manage, we need SDN to make the network and telecommunication services more cost-effective, versatile, stronger, with hardware savings and holistic enthusiasm governance. Distributed Denial of Service (DDoS) attack is the main thread for upcoming SDN. In this chapter, we are going to investigate DDoS attack propagation model in SDN. After that we will present the controller placement model to reduce the impact of DDoS attack. The model is developed by assuming a hypothetical network in Malaysia. The parameters in the hypothetical networks include number of controllers, switches, distance of links, data packets and bandwidth. This research work can enhance understanding on how to provide uninterrupted SDN service under DDoS attacks.
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