WLAN以其接入和终端连接设备便宜,空间覆盖便捷,传输速度大幅提升,以及中继和组网简单这些综合优势赢得了快速的技术发展和市场推广,特别是在办公场所和家庭环境里。由于WLAN的空间开放性,使得大家在使用过程中始终对其保证信息的安全性和终端接入的认证有所担心。WALN的安全性是由传输通道的加密强度、终端认证可信性(访问控制)和安全性检验(信息完整性检验)几方面来保证的。本文对WLAN中的加密技术、加密机制及WLAN设备的安全配置进行探讨。 The combination of inexpensive access, end-to-end connectivity, easy access to space, fast transmission speeds, and simple trunking and networking make WLAN a fast technological development and marketing, especially in workplaces and home environments. Due to the openness of the WLAN space, all users are always worried about the security of their information and the authentication of the terminal access during their use. The security of WALN is guaranteed by several aspects such as the encryption strength of transmission channel, the credibility of terminal authentication (access control) and the security check (information integrity check). This paper discusses the encryption technology in WLAN, encryption mechanism and WLAN device security configuration.