A Fuzzy Logic Approach to Detect and Avoid Selective Forwarding Attacks in Wireless Mesh Networks

In recent days, Wireless Mesh Networks (WMNs) are emerging as an interesting area. WMNs provide technology for next generation wireless networking to provide services that are not supported by other Wireless Network. WMNs are mostly deployed in hostile environment where these are unattended. So WMNs are vulnerable to different types of security attacks such as wormhole, black hole attack, sybil etc. So security is major concern in WMNs. In this paper most serious attack known as selective forwarding attack is investigated. In this attack a malicious node drops all or some of received packets. An algorithm is defined to protect WMNs against selective forwarding attack which is based on Fuzzy Logic. Fuzzy Logic provides a simple way to arrive at a definite conclusion based upon vague, ambiguous, impressive, noisy or missing input information. The performance is evaluated in terms of throughput and average end to end delay. Simulation results have been provided to illustrate the efficiency of the proposed algorithm.

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