QoS of MANet Through Trust based AODV Routing Protocol by Exclusion of Black Hole Attack

Black hole attack is a common security issue encountered in Mobile Adhoc Network (MANet) routing protocol. In this paper a trust value for each node has been obtained depending upon the packet forwarding ability of the node. A rank is generated based on this trust value. In the route discovery step of the AODV routing protocol a path is chosen in such a way that more trusted nodes are involved. Also a node can be excluded which is not trusted from the route. Thus the packet is transferred through a more trusted path rather than the shortest path. Results of simulation through the use of OMNeT++ simulation software shows that higher threshold values gives less packet drops providing more reliable communication.