Research on the intrusion detection model based on improved cumulative summation and evidence theory for wireless sensor network

摘要

In this paper, a new hybrid intrusion detection model which combines the distributed and centralized strategies is proposed in this paper as follows. Firstly, considering the network anomalies, situation cannot be captured in real time on the base station; by introducing the CUSUM (cumulative summation) GLR (generalized likelihood ratio), an anomaly detection model which runs on the node is given. It can conduct real-time network monitoring. Based on the link quality and majority rule, a new algorithm to detect the Sinkhole attack in the base station is proposed, and a new model CUSUM_MV to detect intrusion is given. Secondly, the evidence theory is introduced to detect intrusion in wireless sensor network. We give the redundant information process mechanism in the relay node, an evidence-based intrusion detection model deployed on the base station and the intrusion detection model CUSUM_HDST. The hybrid model can detect not only Sinkhole and DoS attacks, but also other specific vulnerabilities. A simulation experiment on Castalia simulator is carried out, and results show that the proposed method has better performance than the traditional Sinkhole attacks detection method.