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Issue No. 02 - March/April (2012 vol. 9)
ISSN: 1545-5971
pp: 250-260
Ziming Zhao , Arizona State University, Tempe
Hongxin Hu , Arizona State University, Tempe
Gail-Joon Ahn , Arizona State University, Tempe
Ruoyu Wu , Arizona State University, Tempe
Mobile Ad hoc Networks (MANET) have been highly vulnerable to attacks due to the dynamic nature of its network infrastructure. Among these attacks, routing attacks have received considerable attention since it could cause the most devastating damage to MANET. Even though there exist several intrusion response techniques to mitigate such critical attacks, existing solutions typically attempt to isolate malicious nodes based on binary or naïve fuzzy response decisions. However, binary responses may result in the unexpected network partition, causing additional damages to the network infrastructure, and naïve fuzzy responses could lead to uncertainty in countering routing attacks in MANET. In this paper, we propose a risk-aware response mechanism to systematically cope with the identified routing attacks. Our risk-aware approach is based on an extended Dempster-Shafer mathematical theory of evidence introducing a notion of importance factors. In addition, our experiments demonstrate the effectiveness of our approach with the consideration of several performance metrics.
Mobile ad hoc networks, intrusion response, risk aware, dempster-shafer theory.

G. Ahn, R. Wu, H. Hu and Z. Zhao, "Risk-Aware Mitigation for MANET Routing Attacks," in IEEE Transactions on Dependable and Secure Computing, vol. 9, no. , pp. 250-260, 2011.
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