Multiphase Detection and Evaluation of AODV for Malicious Behaviour of a node in MANETs

Security threats are common in adhoc networks as there will be no fixed behaviour for node. The MANETs are adhoc networks which are liable to suffer from many such dangerous attacks. Wireless link for communication is used in which that makes network very vulnerable to an enemy's malicious behavior. The well known severity in malicious behaviour in ad-hoc networks is Black hole attack which exploits susceptibility of routing protocols like AODV. The proposed solution is to detect malicious node by checking the destination node sequence number with the next node seq number. Simulation is carried out in ns-2.35 which proves that the performance of network under malicious node behaviour and it has maximized by decreasing packet drop and also by detecting and avoiding black holes against the mobile adhoc network.