如何在服务器上进行端口扫描？

①Windows系统服务器，用dos扫描打开的端口

快捷键WIN+R在运行中输入“cmd”确定

netstat -na

②Linux系统服务器，终端中用nc命令扫描端口

nc -v -w 2 `102464615 -i` 3901-3905

#扫描ip地址102464615的端口开启情况

nc: connect to 102464615 port 3901 (tcp) failed: Connection refused
nc: connect to 102464615 port 3902 (tcp) failed: Connection refused #端口关闭
Connection to 102464615 3903 port [tcp/charsetmgr] succeeded!  #端口开通
nc: connect to 102464615 port 3904 (tcp) failed: Connection refused
Connection to 102464615 3905 port [tcp/mupdate] succeeded!     #端口开通