防火墙的安全分析及构筑建议

Analysis of the Security and the Advice for Constructing of Firewall

简要介绍了目前防火墙所采用的三种应用技术 :包过滤技术 ,应用层网关 ,代理服务。讨论了包过滤、代理、双穴主机防火墙的特点。对防火墙的安全性进行了详细分析 ,指出了目前防火墙技术存在的问题和局限性 。

This paper briefly explicates three kinds of common application technology:package filtering,application gateway and the proxy service,and discusses the characteristics of the firewall of package filtering,the proxy and the dual hole main stations.Especially we point out the localization of the technology of firewall after the analysis of the security of the firewall.On the basis of it an advice of the new generation firewall is given.