Software-Defined Networking (SDN) is dynamic in nature for future intelligent networks and function applications with reduced operating cost through simplified software, hardware and management. The SDN challenges are performance, security, scalability and interoperability combined with the proposal in potential solutions direction. The Distributed- Denial of Service (DDoS) attack rate is growing year by year. In 2016, the largest attack rate was 800 Gbps. There exists a contradictory relationship between SDN and …