无线广域网、无线城域网、无线局域网、无线个域网、无线体域网等无线网络

的基本特点，然后从无线网络的开放性、移动性、动态变化以及传输信号的不稳定性和终端设备等方面比较

了无线网络安全和有线网络安全的区别，最后提出并详细解释了解决无线网络安全问题的一般思路。-This article firstly introduces basic characteristics of various wireless networks, such as wireless

wide area network, wireless metropolitan area network, wireless local area network, wireless personal area network,

and wireless body area network. Next, the comparisons of wireless network security and wired network security are

presented in terms of openness, mobility, dynamic topology generation, signal channel instability, and properties of

terminal devices. Finally, a general research method for solving security problems in wireless networks is proposed

and explained in details.