(Libpcap is a network packet capture function package under unix/linux platform. Most network monitoring software is based on it. Libpcap can work on most UNIX - like platforms Libpcap application framework Libpcap provides a system independent user level network packet capture interface, and fully considers the portability of applications. Libpcap can work on most UNIX like platforms. Reference a contains a detailed list of Libpcap based network applications. On the windows platform, a function package similar to Libpcap, WinPcap provides the capture function. Its official website is http://winpcap.polito.it/ 。)