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

In research network traffic and firewall TCP/IP packet capture, the basis of the principle of using object-oriented method, the requirement analysis and design functions. In this system, the development VisualC++ 6.0 environment, the comprehensive ad