WITHDRAWN: Detection and elimination of black hole attacks in mobile ad hoc networks

Abstract

Abstract Wireless Ad Hoc Network is a dynamically organized network on emergency situations, in which a group of wireless devices send data among themselves without requiring any base stations for forwarding data. Multi hop communication in MANET is achieved by the cooperation of nodes in forwarding data packets. This feature of MANET is largely exploited to launch a security attack called black hole attack. In this attack, the attacker sends a false route reply to the source node claiming the shortest path to reach the destination and attracts the data traffic towards it and drops all data packets without forwarding it to the destination. A light weight solution called SEC-DSR is proposed to defend the network from black hole attack and enables communication among nodes even in the presence of attackers. In this scheme, by analyzing only the control packets used for routing in the network, the compromised nodes launching the attack are identified. From the collective judgment by the participating nodes in the routing path, a secure route free of black hole nodes is selected for communication by the host. Simulation results validate and ensure the effectiveness of the proposed solution in the presence of black hole nodes. Also the proposed work achieves better throughput and better end-to-end delay in the presence of attack.