Abstract
The ad hoc on-demand distance vector (AODV) routing protocol, designed for mobile ad hoc networks, offers quick adaptation to dynamic link conditions, low processing and memory overhead, and low network utilization. However, without keeping in mind the security issues in the protocol design, AODV is vulnerable to various kinds of attacks. Intrusion detection, as the second line of defense, is an indispensable tool for highly survivable networks. This paper analyzes some of the vulnerabilities, specifically discussing attacks against AODV that manipulate the routing messages. We propose a solution based on specification-based intrusion detection to detect attacks on AODV. Briefly, our approach involves the use of finite state machines for specifying correct AODV routing behavior and distributed network monitors for detecting run-time violation of the specifications. The simulation results indicate that the proposed approach can effectively detect most of the serious AODV routing attacks effectively, and with low overhead.
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