本源代码是用SMTP来发送电子邮件的，能一起发送附件

计算校验和 命令行：check_sum infile 其中check_sum是程序名，infile是数据文件名 输出：数据文件的校验和。 目的是通过数据链路层与介质访问控制层的学习，根据数据链路层的基本原理，针对普遍应用的Ethernet帧，通过构造一个具体的帧，深入理解网络协议的基本概念与网络问题处理的一般方法。-calculated checksum command line : check_sum infile which check_sum procedures, and infile data output file name : data files, the checksum. The purpose of the data link layer and the MAC layer of learning, according to the data link layer to the basic principles of universal application against the Ethernet frame, and by constructing a concrete frames, in-depth understanding of network protocols and the basic concepts of network issues to deal with the general approach.

一个“路由跟踪”程序，包括如何设置IP头标，如何对收发过程中的错误进行控制等内容。-a "routing track" procedures, including how to set up the IP header. Transceivers how to process the errors control content.

端口扫描器的程序代码-port scanner code

This sample will show you how to use the WebBrowser Control and how to disable right click context menu for browser s window. Requires installed Internet Explorer 3.xx or Internet Explorer 4.xx. Works with both versions. This sample works with All version of VB5.

Xhtm编程开发参考手册 有助于网络编程时的标签的功能查询-Xhtm Programming Reference Manual will help network programming function of the label when the query

有关Delphi网络编程方面的例子。-the Delphi Network Programming of examples.

网络五子棋系统，用vc实现.学习vc对话框编程，网络编程。-331 network system, using vc achieve. Learning vc dialog programming, network programming.

在硬件设置上禁用和启动多个网卡，在xp、win98、win2000上测试过-the hardware setup and launched a number of banned card, xp, win98, tested on WIN2000

socket编程示例，分为server，client两个程序，实现程序的自动升级。-socket programming paradigm into server, client two procedures to achieve the automatic escalation procedures.

介绍如何在程序运行时获取当前机器的网卡信息。-procedures on how to run the current machinery access card information.