vc防火墙的设计与实现的程序的源码，很不错的demo，极具参考价值-vc firewall design and implementation of the program source code, a very good demo, great reference value

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Filter-Hook Driver防火墙程序设计,用vc编制对从事网络安全工作的同事有重要的帮助.-Filter-Hook Driver firewall program design, with vc the preparation work of colleagues in network security are important to help.