SDN based Network Security Challenges and Methods of Mitigation

The software-defined network is one of the most important areas for future networking in 5G and next-generation networks (SDN). As a result of the SDN design, the conventional network is forced to be software-based, which boosts mobility, substantially automates workflows, and accelerates delivery. It is easier to manage and keep track of the network's resources with a centralized view of the entire network and dynamic SDN separation of the control plane from the network layer. The early SDN architecture misinterprets the security requirements due to its centralized control point, raising security vulnerabilities. This paper contributes to the advancement of both the scientific community and the industry by investigating the security and authentication processes used in SDN. Make a list of every security threat and SDN violation that is currently known. The study investigates the previously mentioned SDN security and authentication methods. The defense against attacker is challenging task. These challenges and security requirements in SDN are discussed. Future research directions will be determined based on the essential elements needed for the creation of algorithms for delivering security in SDN.