Dection of Routing Misbehaviour in MANET.

Ad hoc on demand Distance Vector (AODV) is one of the most suitable routing protocols for the MANETs and it is more vulnerable to black hole attack by the malicious nodes. A malicious node that incorrectly sends the RREP (route reply) that it has a latest route with minimum hop count to destination and then it drops all the receiving packets. Therefore, we proposed the multiple IDS (intrusion detection system) nodes are deployed in MANETs in order to detect and prevent selective black hole attacks. All IDS perform an ABM (Anti-Black hole Mechanism) which estimates the suspicious value of a node, according to the amount of abnormal difference between RREQs and RREPs transmitted from the node. The NS2 simulation results confirmed that the propose protocol IDS shown better performance than conventional protocol AODV