能够在windows下实现ping命令，

Internet图片验证码系统-Internet Image Verification Code System

用vc编写的典型端口扫描程序，提供用户输入ip地址，端口号进行扫描-vc prepared with the typical port scanning procedures, and providing user input ip address, port scanning

局域网实时通讯工具,C++编写,网络课程设计-LAN real-time communication tools, C++ Preparation, curriculum design network

一个模拟网络书店的程序，具有网络书店的一般功能，包括查阅目录和购买等-a simulation network of bookstores procedures, with the general bookstore network functions, including access to catalog and purchase

一个简单的网络通信小程序，包括发送字符串，网络授时等-A simple network of small procedures, including the transmission of the string, such as network time

端口扫描器的程序代码-port scanner code

udp实现的局域网聊天小程序-udp achieve LAN chatting small program

基于TCP/IBCP协议的BCB SOCKET聊天 通讯源代码，SERVER和CLIENT功能集成在一起，直接编译后运行，复制到局域网中任何一台电脑之后即可进行聊天通讯。提供了SOCKET通讯的功能架构，做相应的修改即可实现您想要的功能。

从网页上下载，这样的话可以用其加工来设计升级程序-downloaded from the website, so processing can be used to design its promotion procedures