摘要
本文讨论了在局域网建立安全体系的意义 ,介绍了当前流行的“防火墙”类型和结构 ,就一个具体的网络拓扑模型 ,基于已有的计费系统 ,在RED HAT LINUX操作系统上构筑“防火墙”.
The significance of building a safety system at the regional network is described,and types and structure of a popular firewall are epitomized in this paper.And then,a practical/specific topological model is applied on the firewall,based on the RED HAT LINUX operation system and chargeable system.
