Secure Routing in Unsafe MANETs with Blackhole node by modification of AODV Routing protocol

Abstract Black hole attack which is a serious threat to the network security and information protection should be prevented at any cost. Black hole attack one of the denial of service attack sucks the data packets that are transferred through the network. The data packets that are received by the blackhole node will be eventually dropped by the node itself. The damages caused by the attack can be prevented by blocking the malicious node to be the intermediate node in communication within the network. The proposed method filters the original genuine RREP from the fake RREP created by the black hole node. This filtered RREP is only allowed to get transferred through the network. The identification of fake RREP is done using two factor that can determine the behavior of the node.