Risk-Aware Response for Mitigating MANET Routing Attacks

Abstract

Abstract-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 riskaware 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 factor. In addition, our experiments demonstrate the effectiveness of our approach with the consideration of the packet delivery ratio and routing cost.

Surviving Attacks in Challenged Networks

“…In challenged networks since accurate identification of attackers is hard and false positives are prevalent, an isolation policy can create worse effects than the attack itself. A number of works [26], [28] evaluate the impact of the attacks and the impact of the isolation to intelligently decide when it is worth applying isolation.…”