port scanning (including source code)

用C#写的一个基于邮件收发的简单模块,能够实现邮件的发送和接收.-Use C# to write a simple module based on the e-mail sent and received.

JAVA网络编程,JAVA多线程编程,重点是JAVA 网络编程.如UDP包的收发,建立TCP连接等.-Java Network Programming, Java multithreaded programming, with a focus on Java network programming. If the UDP packet transceiver to establish TCP connection.

利用API函数编写的程序,可以实现文件的自由传送!-prepared using the API function procedures, the document can be achieved free!

采用VC++编程，实现局域网内部的聊天小程序。-Used VC++ Programming, internal LAN chat applet.

这是我辛苦编的一个JAVA程序,是关于LOGIN.简单,易懂.希望能被采用.多谢管理员过目.-This is the hard part I of a Java process is on the LOGIN. Simple. understandable. hope can be used. thank administrators read. Thank you

判断一个IP是否在某个网段（子网掩码和网络地址、两个IP之间)-To determine whether an IP in a network segment (subnet mask and network address, between the two IP)

教务管理系统,方便学校教学教务行政管理与运作，互动可行。-Academic Management System to facilitate teaching school administration and operation of the Senate, interactive feasible.

关于网络通信方面的程序,供大家参考.-on network communications procedures, for your reference.

用rawsocket构造udp数据包的程序-Rawsocket constructed using udp packet procedure

用Java实现日志功能，操作方便，记录客户端与服务器间的任何操作-using Java log function, easy to operate and record client and server operation of any