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A Low-rate DDoS Attack Detection Method Based on BiLSTM

  

  1. (1. College of Computer Science and Technology, Guizhou University, Guiyang 550025, China;
    2. Guizhou Provincial Key Laboratory of Public Big Data, Guiyang 550025, China)
  • Received:2020-01-19 Online:2020-05-20 Published:2020-05-21

Abstract:  Low-rate distributed denial of service (LDDoS) attack is a new type of DDoS attack. Because of its characteristics of low-rate, periodicity and concealment, it avoids the traditional detection technology of DDoS attack and is more difficult to be detected and defended. This paper proposes a LDDoS attack detection method based on feature selection and bidirectional long short term memory (BiLSTM) neural network. In this method, recursive feature elimination CV (REFCV) feature selection algorithm of layered cross validation is used to mine the optimal 11 feature sets in two-way flow as input to the neural network, and a LDDoS attack detection classifier based on BiLSTM neural network model is established for classification, which achieves the purpose of LDDoS attack detection. Experimental results show that this method has higher detection rate than Kalman filter and NCAS algorithm, and lower false positive rate and false negative rate.

Key words: low-rate, DDoS, BiLSTM, feature selection

CLC Number: