“…4. The SDN has many characteristics that assist the researchers in developing some strong DDoS detection mechanisms (Abdulkarem & Dawod, 2020;Dharma et al, 2015;Hong et al, 2017;Li et al, 2018;Mishra et al, 2021;Mladenov, 2019;Sun et al, 2019;Thomas & James, 2017;, like dynamic updates for flow rule, centralized control of the entire network, software-based analysis, separating data plane from control plane, etc. However, the above characteristics also render SDN a potential target for several types of overloading DDoS attacks (Bhushan & Gupta, 2019), e.g., an attack against the centralized SDN controller can crash the entire SDN-based cloud.…”