Research And Implementation Of Internet Of Things Security Mechanism Based On Software Defined Security

With the development of the Internet of Things,there are more and more IoT assets on the network.However,the security of the Internet of Things has not been resolved,which brings great risks to the network environment.Restricted resources of IoT devices is one of the main sources of security problems.Based on the flexible network control capabilities and protection capabilities provided by software-defined security systems,this paper designs a IoT device anomaly detection scheme based on the fact that IoT devices are recourse constrained and always running single tasks,which is the innovation of this paper.The scheme forms the observation sequence of the device state by collecting the state information such as the running time of the normal task in the IoT device,and uses the time series analysis method to judge whether there is an abnormal state.Then we design the experiments to check the feasibility and effectiveness of the scheme.We fully analyze the characteristics of Internet of Things devices,limited resources and single task,and design an anomaly detection scheme based on these characteristics.Then we use the protection capability provided by software defined security system to cover the shortcomings of equipment capacity,which provide a new idea for Internet of Things security.On the premise that the experimental results prove that the scheme is effective,we also design and implement a security detection system based on the detection scheme.Then we deploy the detection system on the wireless router to demonstrate the availability of the system.Finally,we evaluate the detection system by comparing with Sapphire,the IoT gateway designed by AT&T Security Research Center,to illustrate the advantages and disadvantages of our detection system from multiple dimensions.