Abstract
The aim of this paper is to protect the wireless network against the blackhole attack. Blackhole attack, as the name suggest, drops all the packets forwarded to it. In this paper, we have proposed an intrusion detection system (IDS) scheme to detect the malicious node (blackhole node) and to nullify its effect in the network. The proposed IDS scheme in the presence of blackhole attack gives approximately similar result as that of in the absence of attack. The network comprises for the three modules (i) Default AODV, (ii) AODV in the presence of blackhole attack and (iii) IDS scheme in the presence of attack by considering some parameters such as end to end delay, throughput, packet delivery ratio, normalized routing load etc. The proposed algorithm has been simulated on Network Simulator version-2 (NS-2).
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