Abstract: Wireless mesh network resolve the limitation of ad hoc networks which ultimately improves the performance of Ad hoc networks. Security is a very important issue which can be resolve through proper management of network. The improvement of 802.11i security has greatly improved the network performance. It also increases the encryption, integrity, security issues, threats and their counter measures. Attacks which can come on different layers are being discussed shortly in this paper. Security in wireless mesh network is still under consideration. Wireless mesh network is attracting more attention due to its enhanced features. Wireless mesh network topology and technology is being discussed in this paper. Finally security issues are discussed.