![Figure 3: Wormhole Attack In Figure 3, source node S broadcasts an RREQ message to find its way to the destination node D. Node P and T receives RREQ message from S. Now when A receives RREQ (forwarded by P) it records and tunnels the RREQ to B. Now B forwards it to Q, Q forwards it to R and finally RREQ reaches D. Again RREQ reached D through another route S-T-U-V-W-X-Y-Z-D but the RREQ reaching D through the other path reaches faster. So D ignores the message received through S-T-U-V-W-X-Y-ZD route. Now D unicasts RREP through the route S-P-AB-Q-R-D. Thus all the data packets pass through the wormhole tunnel between the malicious nodes A and B [6].](https://www.researchgate.net/profile/Harish-Rohil-2/publication/260632414/figure/fig3/AS:669278831382539@1536579916341/Wormhole-Attack-In-Figure-3-source-node-S-broadcasts-an-RREQ-message-to-find-its-way-to_Q320.jpg)
November 2013
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359 Reads
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14 Citations
International Journal of Computer Applications
In Mobile Adhoc NETworks (MANETs), security is of major concern because of its inherent liabilities. The characteristics of MANETs like infrastructure less network with dynamic topology pose a number of challenges to security design. There is an increasing threat of attacks in MANET. Wormhole attack is one of the security attacks on mobile adhoc networks in which a pair of colluding nodes make a tunnel using a high speed network. This paper focuses on providing a solution for secure transmission through the network and proposes a neighbor node analysis approach to identify wormhole attack and removes wormhole link in MANET. The proposed work is simulated using NS-2 and is analyzed using certain parameters such as throughput, loss rate, delay rate.