SECURING CENTRALIZED SDN CONTROL WITH DISTRIBUTED BLOCKCHAIN TECHNOLOGY

Software Defined Networks (SDN) advocates segregation of network control logic, forwarding functions and management applications into different planes to achieve programmability, automated dynamic flow in next generation networks. It promotes deployment novel augmented have flexible, robust, scalable cost-effective deployments. All these features introduce new research challenges require secure communication protocols among the segregated planes. This manuscript focuses on security issue southbound interface which operates between SDN data plane. We highlighted threats associated with an unprotected issues related existing TLS based solution. A lightweight blockchain decentralized solution is proposed for resources logically centralized controllers distributed devices from opponents. The mechanism can operate multi-domain be used wide range plane devices. In addition it, analyzed terms features, reauthentication overhead.