BSS: Blockchain security over software defined network

One of the major concerns on today's Software-Defined Network (SDN) is to enhance its security. Files sharing in SDN can be made much more secured against fraudulent activities by the implementation of blockchain technology. When the privacy of network's users is increased, the reliability of system increases correspondingly. Blockchain Security over SDN (BSS) is proposed which protects privacy and availability of resources against non-trusting members. Mininet emulator is used for simulating custom SDN network topology. OpenDaylight controller is integrated with OpenStack controller. For cloud data storage, OpenStack platform is used. For testing purpose of Blockchain, Pyethereum tester tool under Ethereum platform is implemented. Serpent programming is used for creating contract in the blockchain. BSS facilitates files sharing among SDN users in distributed peer-to-peer basis using OpenStack as a cloud storage platform.