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本文设计与实现了局域网防火墙。首先阐述了防火墙的原理,然后分析防火墙系统总体设计,最后论述防火墙的设计与实现,并详述其具体实现的各个模块。
This article designs and realizes the LAN firewall. First of all, the principle of the firewall is expounded. Then the overall design of the firewall system is analyzed. Finally, the design and implementation of the firewall are described. The modules of the firewall are described in detail.