捕获IP数据包的小程序,原理是使用PCAP库.开发语言为C-IP packet capture the small programs, principles for the use of Cards. For the C programming language

防火墙一般为低端程序 代码含金量很高，此为 防火墙的C语言的实现 供大家参考-firewall general low-end code for the high gold content, this firewall to the C language to achieve for your consideration

一个简单的防火墙程序源码，希望对学习者有所帮助。程序用C语言实现-A simple firewall program source code, want to help learners. Program with C language