win 常用操作

查看当前防火墙状态：netsh advfirewall show allprofiles
关闭防火墙：netsh advfirewall set allprofiles state off
开启防火墙：netsh advfirewall set allprofiles state on
添加删除规则
netsh advfirewall firewall add rule name="Open Port 1883" dir=in action=allow protocol=TCP localport=1883
netsh advfirewall firewall delete rule name=RDP dir=in action=allow protocol=tcp localport=3389
netsh firewall show config
远程桌面默认端口3389
win 安装telnet
使用win+R键打开运行程序，在输入框里输入：OptionalFeatures点击确定，图形化安装