Due to using less secured and movable devices in Internet of Things (IoT) platform, cyber-attacks have been a major issue nowadays. Different researches have been conducted to detect the probable security attacks, but faced constraints like storage, computation cost, system failure and high latency. Existing systems require continuous monitoring, controlling, and collecting the data in entire network for delivering services with the maximum security and defense mechanism against cyber-attacks. In this context, a decentralized mechanism of security has been presented in this article using a software-defined network (SDN) integrated with blockchain for IoT in mobile edge and fog computing. The SDN continuously monitors and analyzes the system traffic for providing an attack identification model. The blockchain has been used to overcome the failure issues addressed in the existing models by delivering decentralized attack identification scheme which detects attacks in fog and reduces it in the edge node.

中文翻译：

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一种基于区块链的基于软件定义网络的去中心化物联网网络攻击检测方案

由于在物联网 (IoT) 平台中使用安全性较低且可移动的设备，网络攻击已成为当今的主要问题。已经进行了不同的研究来检测可能的安全攻击，但面临存储、计算成本、系统故障和高延迟等限制。现有系统需要对整个网络中的数据进行持续监控、控制和收集，以提供具有最大安全性和防御机制的服务来抵御网络攻击。在这种情况下，本文提出了一种分散式安全机制，使用软件定义网络 (SDN) 与区块链集成，用于移动边缘计算和雾计算中的物联网。SDN 持续监控和分析系统流量以提供攻击识别模型。