Abstract
Applications used now a day are bandwidth hungry like Online Shopping, IPTV, E-Commerce and many other which require more and more bandwidth as well as continuous bandwidth. The Software Defined Networking (SDN) decouples control and forward plane allowing the flexibility to program network control plane and empowers distinctive approaches to network security than those existing in present IP system. In SDN, the centralized controllers keep an eye on the changing scenarios of the network. Because of controller view of the network, SDN can facilitate and enhance the network related security. SDN architecture is directly programmable and opens standard-based but SDN itself have numerous issues like performance vs. flexibility, scalability, security and interoperability. This paper discusses security issues regarding logically centralized controller, OpenFlow constraints and absence of middle-boxes in SDN.
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