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International Journal of Distributed Sensor Networks
Volume 2013 (2013), Article ID 521497, 20 pages
Research Article

On Lightweight Intrusion Detection: Modeling and Detecting Intrusions Dedicated to OLSR Protocol

1UFC/FEMTO-ST Institute, UMR CNRS 6174, 25201 Montbéliard, France
2Cédric Laboratory, CNAM, 75003 Paris, France

Received 1 March 2013; Accepted 23 April 2013

Academic Editor: S. Khan

Copyright © 2013 Mouhannad Alattar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Mobile ad hoc networks mostly operate over open, adverse, or even hostile environments and are, therefore, vulnerable to a large body of threats. Conventional ways of securing network relying on, for example, firewall and encryption, should henceforth be coupled with advanced intrusion detection. To meet this requirement, we first identify the attacks that threaten ad hoc networks, focusing on the Optimized Link State Routing Protocol. We then introduce IDAR, a signature-based Intrusion Detector dedicated to ad hoc routing protocols. Contrary to existing systems that monitor the packets going through the host, our system analyses the logs so as to identify patterns of misuse. This detector scopes with the resource-constraints of ad hoc devices by providing distributed detection; in particular, depending on the level of suspicion and gravity, in-depth cooperative diagnostic may be launched. Simulation-based evaluation shows limited resource consumption (e.g., memory and bandwidth) and high detection rate along with reduced false positives.