Date Added: Dec 2011
Security is an essential feature for wired and wireless network. But due to its unique characteristics of MANETs, it creates a number of consequential security challenges to network. MANETs are vulnerable to various attacks, blackhole is one of the possible attack. In this paper, the authors represent an intrusion detection system for MANETs against blackhole attack using fuzzy logic. Their system successfully detects the blackhole in the network and this information is passed to other nodes also. They also provide a detailed performance evaluation based on various network parameters. Their results show that the proposed system not only detects the blackhole node, but improves the performance of AODV under the blackhole attack.