摘要
本文介绍了防火墙的概念及其功能。防火墙是一种访问控制技术,它通过在某个机构的网络和不安全的网络之间设置障碍,阻止信息资源的非法访问。又系统地介绍了网络防火墙系统的基本设计原则的基础上阐述了Internet网络中的防火墙技术。分析了防火墙技术在Internet安全上的重要作用,并提出其不足之处和解决方案。最后阐述了用户在选择防火墙软件时应注意哪些问题。
关键字:
防火墙;包过滤技术;代理技术;网络;Internet;网络安全;网关
Abstract :
We introduce the conception and function of firewall at frist. Firewall is a kind of access control technology which can prevent the information from being illegally accessed by means of setting up the obstruction between the network of a certain organization and the unsafe network.. On the basis of system atically introducting the basic design principe of firewall system, the paper desicribes the firewall technology in the Internet. The paper describes the importance of firewall technology on the security of Internet, and puts forward its shortcomings and their solution.At last we analyze what’s we should care about in choosing firewall.
Keywords:
Firewall;Packet Filtering Technology;Proxy Technology;Network;Internet;Network Security;Geteway
目录
引言………………………………………………………………………………………………3
防火墙基本概念…………………………………………………………………………………3
防火墙的功能……………………………………………………………………………………3
防火墙技术………………………………………………………………………………………3
防火墙的种类……………………………………………………………………………………4
防火墙的配置……………………………………………………………………………………5
防火墙设计策略…………………………………………………………………………………6
防火墙系统的设计原则…………………………………………………………………………6
网络安全存在的问题……………………………………………………………………………6
防火墙存在的问题及解决方案…………………………………………………………………7