Elimination of Wormhole Attacker Node in MANET Using Performance Evaluation Multipath Algorithm
Rajpal Singh Khainwar, Anurag Kumar Jain, Jagdish Prasad Tyagi · 2013
Abstract — In MANET, the more security is required in comparison to wired network. Wireless networks are susceptible to many attacks, including an attack known as the wormhole attack. The wormhole attack is very powerful, and preventing the attack has proven to be very difficult. In wormhole attacks, one malicious node tunnels packets from its location to the other malicious node. Such wormhole attacks result in a false route with fewer. If source node chooses this fake route, malicious nodes have the option of delivering the packets or dropping them. In this paper we specifically considering Wormhole attack. Instead of detecting suspicious routes as in previous methods, in this paper we implement a new method which detects malicious nodes and works without modification of protocol, using a hop-count and time delay analysis from the users point of view without any special environment assumptions. The proposed work is simulated using OPNET and results showing the advantages of proposed work. Since the transmission between two nodes has to rely on relay nodes, many routing protocols [1, 2, 3, 4] have been proposed for ad hoc networks. In a wormhole attack, attackers “tunnel ” packets to another area of the network bypassing normal routes as shown in Figure 1. The resulting route through the wormhole may have a better metric, i.e., a lower hop-count than normal routes. With this leverage, attackers using wormholes can easily manipulate the routing priority in MANET to perform eavesdropping, packet modification or perform a DoS (Denial of Service) attack. The entire routing system in MANET can even be brought down using the wormhole attack. Its severity and influence has been analyzed in [5]. Keywords- ad hoc network, hop-count analysis, network security, wormhole attack. I.