International Journal of Computer Applications
SDN separates the control plane and data plane. SDN needs to be equipped with complex and proprietary networking devices as it needs to separate the infrastructure layer (network device) from the control layer (network OS, which provides a central view and control over the network and network services) and the application layer (software/business application). When a single controller is given the job of controlling multiple devices (switches/routers) these changes in network structure brought about by SDN will inevitably impact on network security. In this paper, the authors studied issues and security challenges in SDN and current status.