Universiti Teknologi Malaysia Institutional Repository

An implementation of LoSS detection with second order statistical model

Rohani, Mohd. Foad and Maarof, Mohd. Aizaini and Selamat, Ali and Kettani, Houssain (2007) An implementation of LoSS detection with second order statistical model. In: Proceedings of the Postgraduate Annual Research Seminar 2007, 3 - 4 July 2007, FSKSM, UTM.

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Abstract

Recent studies have shown that malicious Internet traffic such as Denial of Service (DoS) packets introduces distribution error and perturbs the self-similarity property of network traffic. As a result, Loss of Self-Similarity (LoSS) is detected due to the abnormal traffic packets hence degrading the Quality of Service (QoS) performance. In order to fulfill the demand for high speed and accuracy for online Internet traffic monitoring, we propose LoSS detection with second order self-similarity statistical (SOSS) model and estimate the self-similarity parameter using the Optimization Method (OM). We test our approach using synthetic and real traffic data. For the former, we use fractional Gaussian noise (fGn) generator, while for the latter we use FSKSMNet simulation dataset. We investigate the behavior of self-similarity property for normal and abnormal traffic packets with different aggregation sampling level (m). The results show that normal Internet activities preserve exact self-similarity property while abnormal traffic perturbs the structure of self-similarity property. The results also demonstrate that fixed m is not sufficient to detect distribution error accurately. Accordingly, we suggest a multi-level aggregation sampling approach to improve the accuracy of LoSS detection.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Denial of Service (DoS), network traffic, FSKSMNet simulation dataset
Subjects:Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:Computer Science and Information System (Formerly known)
ID Code:5606
Deposited By: PM Mazleena Salleh
Deposited On:28 May 2008 00:24
Last Modified:29 Nov 2012 04:18

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