Compared with the traditional wired network, the wireless network is more flexible and not limited by the environment, which can effectively save the wire and reduce the cost of the network. But in the application of wireless network, communication security and the problem easy to break can not be ignored. Wireless network is not limited to physical access, security is the premise of the application of wireless network. Therefore, the corresponding security authentication and management technology should be taken to ensure the security of wireless network, avoid the network attacks and network threats, and eliminate the information security hidden danger in the wireless network. In this paper, the security authentication and management technology of public wireless local area will be studied and analyzed to ensure the security of information.%无线网络与传统有线网络相比，组网方式更灵活，不受环境限制，能有效节约线材，降低组网成本。但无线网络应用中，通信安全性与易破解问题不容忽视。无线网络没有物理访问限制，安全是无线网络应用的前提。因此，要采取相应安全认证与管理技术，确保无线网络安全，规避网络攻击和网络威胁，消除无线网络中存在的信息安全隐患。文章将针对公共无线局域网安全认证与管理技术展开研究和分析，确保信息安全。
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