SDN网络中基于信誉机制的恶意节点识别系统设计

Design of malicious node identification system based on reputation mechanism in SDN network

恶意节点会影响SDN网络的稳定运行,因此,设计有效的恶意节点识别系统具有重要意义。针对SDN网络提出基于信誉机制的恶意节点识别系统。首先,通过设计控制中心模块、监控模块、响应模块和检测模块组建系统整体结构;然后,在云模型的基础上设计节点信誉机制,获取节点在SDN网络中的信任值,根据信任值识别恶意节点;最后,设计了信任更新机制,跟踪节点在不同时刻的信任值变化情况,提高对恶意节点的识别精度。实验结果表明,该系统具有较高的恶意节点识别精度和识别率。

Malicious nodes will affect the stable operation of SDN network,so it is important to design an effective malicious node identification system.A malicious node identification system based on reputation mechanism is proposed for SDN networks.The overall structure of the system is built by designing the control center module,monitoring module,response module and detection module.On the basis of cloud model,the node reputation mechanism is designed to obtain the trust value of the node in the SDN network,and then the malicious nodes are identified according to the trust value.A trust update mechanism is designed to track the change of trust value of nodes at different times and improve the accuracy of malicious node identification.The experimental results show that the system has high recognition accuracy and recognition rate of malicious nodes.