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Journal of Electrical and Computer Engineering
Volume 2016 (2016), Article ID 2579274, 5 pages
Research Article

An Algorithm of Traffic Perception of DDoS Attacks against SOA Based on Time United Conditional Entropy

1School of Information Science and Engineering, Shenyang Ligong University, Shenyang 110159, China
2College of Information Science and Engineering, Northeaster University, Shenyang 110819, China

Received 12 April 2016; Revised 24 September 2016; Accepted 29 September 2016

Academic Editor: Jun Bi

Copyright © 2016 Yuntao Zhao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


DDoS attacks can prevent legitimate users from accessing the service by consuming resource of the target nodes, whose availability of network and service is exposed to a significant threat. Therefore, DDoS traffic perception is the premise and foundation of the whole system security. In this paper the method of DDoS traffic perception for SOA network based on time united conditional entropy was proposed. According to many-to-one relationship mapping between the source IP address and destination IP addresses of DDoS attacks, traffic characteristics of services are analyzed based on conditional entropy. The algorithm is provided with perception ability of DDoS attacks on SOA services by introducing time dimension. Simulation results show that the novel method can realize DDoS traffic perception with analyzing abrupt variation of conditional entropy in time dimension.