DDoS attack is one of the major concerns for network and cloud service providers, due to its
substantial impact on revenue/cost and especially on their reputation. Also, network
administrators are looking for solutions to manage voluminous data traffic. SDN is an
emerging networking paradigm that provides a flexible network management. Hence, SDN
is being widely adopted for wired, wireless, and mobile networks. Apart from a single point of
failure (the controller), an attacker can target SDN at various levels by DDoS attacks …