The paper introduces the principles of Radius protocol,and describes the method that identifies the VPN user using Radius server which constructed from FreeRadius software in details.
黄继征. Linux环境下对VPN用户认证的Radius服务器的设计与实现[J]. 现代图书情报技术, 2005, 21(7): 22-24.
Huang Jizheng. Design and Implement of Radius Server Using in VPN Authentication in Linux Environment. New Technology of Library and Information Service, 2005, 21(7): 22-24.