Linux防火墙在中小型企业的应用

Applying of Linux firewall on middle and small corporation

阐述了Iptables防火墙的原理以及Netfilter架构,详细论述了基于中小型企业的特殊条件下,构建网络防火墙的思想和步骤。具体规划网络拓扑结构,通过NAT技术屏蔽子网,完成高效性价比防火墙的设计,并给出相关脚本。

This paper elaborates iptables firewall theory and netfilter frame, based on especial condition of middle and small corporation, it also discusses how to set up network firewall with presenting the corresponding step. Through marking out network topology, A firewall of the best ratio of capability vs price is designed with screening subnet by nat. Correlative firewall shell is presented.