Measure of Impact of Node Misbehavior in Ad Hoc Routing: A Comparative Approach
The major challenge to design and deployment of mobile ad hoc
networks (MANETs) is its dynamic nature, which carries with
itself a set of security measures to be resolved. In this paper, we
compare the behavior of three routing protocols DSDV, DSR and
AODV under security attack, where the investigation is carried
out with respect to two types of node misbehavior. The
parameters taken into consideration for evaluation of network
performance are normalized throughput, routing overhead,
normalized routing load and average packet delay, when a certain
percentage of nodes misbehave. It could be established through
simulation results that DSDV is the most robust routing protocol
under security attacks as compared to the other two. In addition,
it reveals that a proactive routing protocol reduces the impact of
security attack by excluding the misbehaving nodes in advance.
Keywords: Ad hoc network, routing, selfish nodes and security
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