端口扫描，根据TCP的connect连接原理，如果连接成功就说明端口打开，如果连接不成功就说明端口关闭-Port scanning, in accordance with the principle of TCP connection of the connect, if the connection open on that port, if the connection is not successful on that port closed

“端口扫描“通常指用同一信息对目标计算机的所有所需扫描的端口进行发送，然后根据返回端口状态来分析目标计算机的端口是否打开、是否可用。“端口扫描“行为的一个重要特征是：在短时期内有很多来自相同的信源地址传向不同的目的地端口的包。 改程序就是实现tcp扫描远程计算机端口。-"Port scan" usually refers to the same information required on the target computer scan of all ports for transmis

tcp多线程端口扫描，基于C# 的一个简单的端口扫描程序-tcp multi-threaded port scanning, based on C# for a simple port scanner

基于全链接的主机端口扫描设计与实现 基于全连接的TCP协议，设计、实现并测试扫描远程主机端口开放情况的应用软件。-Host port scan design and implementation of the full link based on the TCP protocol fully connected, design, implement and test a remote host port scanning application software based on open