At present, attacks based on the vulnerability of controller and flooding still constitute a principal threat for hierarchical Software Defined Network (SDN), such as flow table tampering, malicious Application attacks, Distributed Denial Service (DDoS) etc., due to limitation against known or unknown vulnerabilities traditional cyber defence technology. Therefore, this study proposes an active...

Software-defined network (SDN) is characterized by its programmability, flexibility, and the separation of control data planes. However, SDN still have many challenges, particularly concerning security information synchronization element registration. Blockchain intent-driven networks are recent technologies to establish secure intelligent SDN. This article investigates blockchain-based archite...