update

底层实现ftp客户端(underlying implementation ftp client)

ftp 客户端 C语言终端实现 满足ftp客户端的基本操作(ftp client using c)

基于NT的Telnet客户端 　(NT-based Telnet client)

SMTP的一个例子!VISUAL C(SMTP an example! VISUAL C)

用vb结合bat和ftp实现远程键盘侦听(use VB code and Bat file,ftp to get the remote computer keyboard)

邮件软件：该程序需要两个服务器，一个用来发送邮件，一个用来接受邮件，一般我们用pop3协议来接收邮件，用smtp协议来发送邮件。(E-mail software: the program requires two servers, one used to send a message, a message to accept the general protocol we use to receive mail pop3, smtp protocol used to send messages.)

FTP客户端的实现代码FTP client implementation code(FTP client implementation code)

用到CFtpConnection类，少有的用winsock开发的在VB平台的FTP源码，有文件列表，重命名删除文件等功能。网上也有，但我这个可以修正好可以正常下载，网上找的不能正常下载(CFtpConnection use category, a rare development using winsock in VB platform FTP source, there is the list of files, rename, delete files and other functions. Online also, but I can fix this good can be normal to download, on-line can not find a normal download)

发送email的程序 (Email sending a)

用C语言编写，分别攻击了Warftp和ccproxy两个漏洞（这两个漏洞只在windows xp sp2中存在，sp3和win7已经修复。因此需要安装一个sp2的虚拟机），攻击完成后，会弹出一个攻击成功的对话框，程序比较基础，但是能够帮助初学者深刻了解缓冲区溢出的原理。(Using C language, were attacked Warftp and ccproxy two vulnerabilities (both vulnerability only exists in windows xp sp2, sp3 and win7 has been repaired, so you need to install a virtual machine sp2), and after the attack is completed, it will pop up a successful attack dialog program basis for comparison, but a deep understanding of the principles that can help beginners buffer overflow.)