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Online Detection of Network Traffic Anomalies Using Degree Distributions

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DOI: 10.4236/ijcns.2010.32025    4,991 Downloads   9,950 Views   Citations

ABSTRACT

Diagnosing traffic anomalies rapidly and accurately is critical to the efficient operation of large computer networks. However, it is still a challenge for network administrators. One problem is that the amount of traffic data does not allow real-time analysis of details. Another problem is that some generic detection metrics possess lower capabilities on diagnosing anomalies. To overcome these problems, we propose a system model with an explicit algorithm to perform on-line traffic analysis. In this scheme, we first make use of degree distributions to effectively profile traffic features, and then use the entropy to determine and report changes of degree distributions, which changes of entropy values can accurately differentiate a massive network event, normal or anomalous by adaptive threshold. Evaluations of this scheme demonstrate that it is feasible and efficient for on-line anomaly detection in practice via simulations, using traffic trace collected at high-speed link.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

W. WANG and W. WU, "Online Detection of Network Traffic Anomalies Using Degree Distributions," International Journal of Communications, Network and System Sciences, Vol. 3 No. 2, 2010, pp. 177-182. doi: 10.4236/ijcns.2010.32025.

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