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Wireless Mesh Networks (WMNs) have emerged as a promising concept to meet the challenges in next generation networks providing the ability to configure automatically and reconfigure dynamically to maintain the mesh connectivity, which gives the mesh "Self-forming" and "Self-healing" characteristics. WMN may be dynamic because of changes in both its topology and its membership (i.e. nodes frequently join and leave the network). Any security with a static configuration would not suffice. Security of WLAN remains an area of great debate and concern for the foreseeable future.