Prevention and Elimination of Gray Hole Attack in Mobile Ad-Hoc Networks by Enhanced Multipath Approach
Aar ti, Puneet Rani · International Journal of Engineering Trends and Technology · 2015
A Wireless ad-hoc network is a temporary network set up by wireless mobile computers (or nodes) moving self-assertive in the spots that have no system foundation. Since the nodes communicate with each other, they cooperate by forwarding data packets to other nodes in the network. Security is one of the major issues in MANET due to dynamically changing topologies, lack of centralized monitoring, open medium and bandwidth constraint. Black hole and gray hole attacks are DOS attacks that pose a great threat to the network integrity. To eliminate the effects of Gray hole attack, we have proposed a packet update scheme in which we fetch information from the neighbors for the enquiry of the suspected nodes in the network. Proposed scheme eliminate the gray hole affects by finding all the malicious nodes which are present in the network and send broadcast to whole network for elimination of malicious nodes. Throughput and delay are the parameters for the performance measurements of the network. The simulation work is carried out by OPNET Modeler.