【摘要】 介绍了防火墙技术的基本概念和系统结构,讨论了实现防火墙的两种技术手段:一种是基于分组过滤技术(PacketFiltering),它的代表是在筛选路由器土实现的防火墙功能;一种是基于代理技术(Proxy),它的代表是在筛选路由器上实现的防火墙功能。更多还原

【Abstract】 This paper introduces the basic conception and the system structure of fire-wall technology and also discusses two main technic means to realize the fire-wall; One is based on packet filtering, which is to realize firewall function through Screening Router; and the other is Proxy, the typical representation of which is the gateway on application level.更多还原