Framework for securing SDN southbound communication

The programmable separation of control and forwarding elements of networking which allows programmability and open innovation and separation of basic hardware from various control and management functions is the work of Software Defined Networking (SDN). With the major role of equipment controllers and the reality of security threats, it is also important to leverage defense-in-depth, protocol security, and a reduction in the controller's attack surface to make sure that the SDN is secure and is operating properly. This paper suggest a framework for security services using two representative security systems, such as with security middlebox such as IDS (Intrusion Detection System) and cryptographic framework using digitally signed Message which addresses data integrity and authorization. This paper discusses the limitations of existing systems and presents a possible SDN-based security framework to protect network resources by controlling and prevention of suspicious and dangerous threats.