0引言随着我国信息化建设的不断推进,安全稳定的信息网络发挥着越来越重要的作用。无线网络(Wireless Network)是采用无线通信技术实现的网络,具有简单快捷、低成本、高速率、高灵活性等特点,极大地方便了终端接入。但无线网络的所有数据都在空气中传输,其传输信道无法隔离和切割,受到电磁干扰、无线窃听、非法接入等问题的困扰,成为涉密无线网络安全的制约瓶颈。本文首先论述了无线网络面临的安全威胁,然后对现有技术 0 Introduction As China’s information technology continues to advance, safe and stable information network plays an increasingly important role. Wireless Network (Wireless Network) is a wireless communication technology to achieve the network, with a simple and fast, low-cost, high-speed, high flexibility and other features, which greatly facilitates the terminal access. However, all the data of the wireless network is transmitted in the air, the transmission channel can not be isolated and cut, and the problem of electromagnetic interference, wireless eavesdropping and unauthorized access has become a bottleneck of the confidentiality of the wireless network security. This article first discusses the security threats that wireless networks face, and then the existing technologies