DES加密通信

这是一个瑞利衰落信道的源程序，其中包含C和Matlab两种方式实现-This is a Rayleigh fading channel of the source code, including C and Matlab in two ways to achieve

大量Dos下的tcp程序，含有很多协议如telnet,ftp,tftp等源码-Dos under a large number of tcp procedures, contains a lot of agreement, such as telnet, ftp, tftp, such as source

一个服务器,客户端程序.客户端发送查询信息,服务端返回查询结果-a server, the client program. Send inquiries client information, service-return Results

UDP聊天室，采用UDP协议的聊天程序，可进行一般的聊天，还可进行表情字聊天-UDP chatroom, uses the UDP agreement to chat the procedure, may carry on general chat, but also may carry on the expression character to chat

用qt4 编写的局域网聊天工具，学习qt变成的好的东西-QT4 prepared to use LAN chat tools, learn the good things into qt

一同事之前写的测试http例子，鄙人在此分享与大家。 通过对windows提供的socket封装，实现http协议，下载文件。

不错的http下载程序。- Good http downloading procedure.

该程序实现对目标IP的主机进行端口扫描，可自定义要扫描的端口序号，自定义目标IP，自定义要实行的线程数。在多线程下可以以较快的速度完成端口扫描，且扫描比较准确，有C#提供的界面操作，源码有注释。

XMail is an Internet and intranet mail server featuring an SMTP server, POP3 server, finger server, multiple domains, no need for users to have a real system account, SMTP relay checking, RBL/RSS/ORBS/DUL and custom ( IP based and address based ) spam protection, SMTP authentication ( PLAIN LOGIN CRAM-MD5 POP3-before-SMTP and custom ), a POP3 account syncronizer with external POP3 accounts, account aliases, domain aliases, custom mail processing, direct mail files delivery, custom mail filters, mailing lists, remote administration, custom mail exchangers, logging, and multi-platform code. XMail sources compile under GNU/Linux, FreeBSD, OpenBSD, NetBSD, OSX, Solaris and NT/2K/XP.

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