International Journal of Computer Network and Information Security(IJCNIS)

ISSN: 2074-9090 (Print), ISSN: 2074-9104 (Online)

Published By: MECS Press

IJCNIS Vol.7, No.9, Aug. 2015

Intrusion Detection Based on Normal Traffic Specifications

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Zeinab Heidarian, Naser Movahedinia, Neda Moghim, Payam Mahdinia

Index Terms

Anomaly detection;one class support vector machine;false positive;GPU;OpenMp


As intrusion detection techniques based on malicious traffic signature are unable to detect unknown attacks, the methods derived from characterizing the behavior of the normal traffic are appropriate in case of detecting unseen intrusions. Based on such a technique, one class Support Vector Machine (SVM) is employed in this research to learn http regular traffic characteristics for anomaly detection. First, suitable features are extracted from the normal and abnormal http traffic; then the system is trained by the normal traffic samples. To detect anomaly, the actual traffic (including normal and abnormal packets) is compared to the deduced normal traffic. An anomaly alert is generated if any deviation from the regular traffic model is inferred. Examining the performance of the proposed algorithm using ISCX data set has delivered high accuracy of 89.25% and low false positive of 8.60% in detecting attacks on port 80. In this research, online step speed has reached to 77 times faster than CPU using GPU for feature extraction and OpenMp for parallel processing of packets.

Cite This Paper

Zeinab Heidarian, Naser Movahedinia, Neda Moghim, Payam Mahdinia,"Intrusion Detection Based on Normal Traffic Specifications", IJCNIS, vol.7, no.9, pp.32-38, 2015.DOI: 10.5815/ijcnis.2015.09.04


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