Security in multicast routing is one of a key challenge area in mesh networks because of its broadcasting and dynamic nature. Several multicast routing protocols have been proposed by different researchers but leads to certain parametric issues (i.e. packet delivery ratio, throughput and various security concerns) because of unique characteristics of mesh. The aim of this manuscript is to propose a secure multicast routing protocol for Wireless Mesh Network based on link state quality to

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... y and recover from routing attacks. The proposed mechanism ensure the security against grey hole attack which would be identified by calculating the packet delivery percentage of each node where the node having less packet delivery percentage than predefined threshold value (i.e. 95%) is considered as grey hole affected node. Further, to recover against grey hole attack, a 2-hop preceding node phenomenon is used which immediately select another path to reroute the data packets. The proposed routing mechanism is analysed over NS2 simulator beside different network metrics over static and dynamic environments having scalable network sizes.