在一个局域网环境中，用C 语言实现下面的基本功能： （1）确定截包的方法：包括RAW 模式SOCKET、packet32以及直接作为驱动程序挂在NDIS上 （2）要求截获以下包的类型并分析：以太网帧格式、IP包、ICMP包、TCP报文段、UDP报文等相关字段进行描述。 -In a LAN environment, using C language the following basic functions: (1) determine the method of cut-off packa

It provides an Ethernet or a Token Ring Packet Driver interface to programs built to operate over Packet Drivers. It talks to NDIS (3Com/Microsoft) instead of to a lan board directly. It shares the board with NDIS users. We call this a "shim",