说明：  本文介绍的以原始套接字方式对网络数据进行捕获的方法实现起来比较简单，尤其是不需编写VxD虚拟设备驱动程序就可以实现抓包
(This article describes ways to raw sockets to capture network data to relatively simple way to achieve them, in particular, are not required to prepare VxD virtual device driver can be achieved Ethereal)