Software Defined Network (SDN) is a network model in which traffic may be controlled and managed robustly while ensuring that the system is protected from potential attacks in accordance with client requests. SDN is an emerging technology that is presented with the purpose to reduce the complexity of network functioning by splitting the data and control layer. However, the splitting contributes to a security challenge which is one of the enormous issues concerning SDN operation. Several attack classes such as Distributed Denial of Service (DDoS) attacks may befuddle the SDN performance as a result of the separation. Recently, different methods have been developed in the SDN-based Network Intrusion Detection Systems (NIDS) in order to safeguard computer systems and to overcome SDN security challenges. Besides, various current literature on intrusion detection techniques which influence SDN networks has been reviewed and analyzed in this paper. These Intrusion detection techniques are implemented and help to triumph over SDN network security problems.

Keywords : Software Defined Network, Data Layer, Control Layer, Distributed Denial-of-Service, Network Intrusion Detection Systems.