EVALUATING AN AUTHENTICATED TRUST BASED ADHOC ON DEMAND DISTANCE VECTOR FOR MALICIOUS NODES ISOLATION IN MANET

Abstract

MANET networks are defined as the wireless self configuring networks that are capable of operating without the support of any fixed infrastructure and a central coordinator which makes the routing a complicated task. For detecting misbehaving and selfish nodes between the intermediate nodes it is essential to evaluate the Intermediate Trust Value (ITV) for each node in the network, so that malicious node is isolated. A threshold value is maintained and if the ITV of a node falls below the threshold value, then it is considered as a misbehaving node and are avoided for data communication in a MANET network. Simulation results are evaluated under blackhole attack which also proves that the proposed Authenticated Trust based AODV protocol (AT-AODV) eliminates blackhole attacks and performs well in malicious nodes isolation which increases the packet delivery ratio.