说明：  “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 transmission, and then return to the port state to analyze the target computer s port is open, is available. "Port scan" behavior is an important feature: in the short term, many from the same source address of transfer to a different destination port of the package. Reform program is to achieve the tcp port scan a remote computer.)