Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2018, Vol. 41 ›› Issue (6): 83-89.doi: 10.13190/j.jbupt.2018-007

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A DNS Query Anomaly Detection Algorithm Based on Log Information

JI Xing1, HUANG Tao1, E Xin-hua2, SUN Li1   

  1. 1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. Beijing Advanced Innovation Center for Future Internet Technology, Beijing University of Technology, Beijing 100124, China
  • Received:2018-01-09 Online:2018-12-28 Published:2018-12-24

Abstract: Point at the anomaly queries existing in domain name system (DNS), an anomaly detection algorithm based on DNS query logs is proposed to detect suspicious and abnormal internet protocol addresses (IP). First, multiple dimensions of information in the DNS logs are extracted to characterize the source IPs after analyzing the difference between normal DNS query behaviors and the abnormal ones. Secondly, the datasets are mapped to a three-dimensional space through dimensionality reduction, which is beneficial for intuitive visualization and rapid data analysis. Finally, clustering the source IPs and calculating the credibility of them to identify the abnormal ones. The experiment results show that this algorithm can not only observe the correlation characteristics of multi-dimensional datasets directly, but also identify the abnormal source IPs in the global and local aspects.

Key words: domain name system query, dimensionality reduction, cluster analysis, anomaly detection

CLC Number: