Blockchain-Based IoT Architecture for Software-Defined Networking

A Promising Integration of SDN and Blockchain for IoT Networks: A Survey

“…[57]-[65] Anonymity [34], [35], [37], [38], [50], [65], [66] Shared Ledger [28], [36], [58] Trust-free [28], [34], [38], [38], [39], [50], [55]- [57], [59], [60], [66] • Traceability, the property that the entire database is open and the history of transactions is completely available to be traced. • Transparency, the property that transactions in a BC are publicly viewable due to its being stored at all participating hosts.…”

“…Computational Load [30], [32]- [36], [42], [45], [46], [49], [56]- [58], [61], [67] Storage [31], [39], [41]- [43], [45], [46], [49], [56], [61],…”

“…[67] Ledger Update Latency [29], [34]- [36], [42], [43], [46], [49], [53], [57], [58], [61], [67] cally cited as a disadvantage due to the additional processing requirements of consensus algorithms, such as proof of work [26]. Storage is a disadvantage because each node participating in the BC stores an entire copy of the BC.…”

“…Fast and energy-efficient cluster-head selection; load sharing across SDN devices [45] Security; energy efficiency; resource management Fast and energy-efficient cluster-head selection; and BC maintenance of SDN flow rules to ensure consistency [46] Security of IoT devices with low power SDN groups IoT devices into separate BCs based on capabilities/proximity [47] Prevent internal hosts from becoming bots BC with security modules to identify compromised hosts [52] Maintaining trust between SDN control and data planes Flow verification using edge-computing based BC as a Service (BaaS) [56] Network measurement BC added to SDN-based IoT network measurement framework [57] collective SDN controller security BC implemented in distributed SDN network [58] Security and reduced power consumption BC implemented in distributed SDN network [68] Security of fog-based SDN nodes BC for system security [86] Distributed secure architecture Distributed SDN controller with IDS Attack Prevention [28] Prevent routing black hole attacks BC-based routing information dissemination [34] Prevent malicious traffic broadcasting BC consensus algorithms (PoW, PoS) [69] Sec & Privacy of Crowdsourced SDN-IoV BC exploiting Deep Reinforcement Learning Cloud Security [59] Cloud storage security BC inside cloud storage sharing improves on other approaches that could not develop accurate attack models due to fog nodes being associated with a limited number of IoT devices. The sharing of models allows the fog nodes to expand their data sets significantly to improve attack detection accuracy.…”

“…The approach in [58] is to connect the network of SDN controllers using a public BC while employing them as cluster heads managing IoT devices with private BC implementations. The authors developed an associated routing algorithm that performs well in terms of throughput, delay, and power consumption.…”