A Simple and Efficient Mechanism to Detect and Avoid Wormhole Attacks in IP network through LOLS

It has been observed? that? IP networks are vulnerable? to many kinds of attacks. Among the various attacks possible in? IP networks wormhole attack is one which is treated as a very severe attack. In LOLS, multiple failures are handled but network? attack is not detected. LOLS cannot handle any kind of ?attack and this is the reason why we are working on wormhole attack and its detection? by using AOMDV algorithm. ?In this attack a harmful ?node records?? packets at one end in the network and tunnels them to another? harmful ?node which is present in the other end of the network.? In this paper, we have proposed an algorithm which detects and? avoids the wormhole attack while data transfer . In this paper one ?mechanism is used,? which is based on the total round trip time (RTT) of current ?route and the average round trip times This mechanism ?works for both mobile ad hoc networks and wireless ad hoc networks.