大型拨号认证计费服务器的设计与实现

大型拨号认证计费服务器必须能够同时认证大量上网拨号用户，以及保存用户上网信息以计费。系统要具备良好的扩展性以应对用户规模的增长。给出了一个大型拨号认证计费服务器的设计与实现，设计了一种分布式服务器结构以完成大量认证计费处理工作。系统设计了一种多线程服务器模型以提高系统响应速度，并给出了如何利用RADIUS协议对拨号上网进行认证和计费。本系统采用标准C 实现，通用于各种接入服务器设备，易于扩展系统规模。

Design and implementation of large-scale radius server

A large-scale RADIUS authenticating and accounting server must be able to simultaneously authenticate a great number of users while recording their dialing information for accounting purposes. The system must be equipped with sound extensibility to solve the increasing user accessing requests. The design and implementation of a large-scale RADIUS authenticating and accounting server are presented. A distributed server architecture is designed to undertake the vast authenticating and accounting jobs. To lower the response time, a multithreaded server model is presented. The system is implemented in ANSI C language and is suitable for all kinds of network access server devices with good extensibility.