How to correctly modify the remote desktop connection port under Win8

There are many ways to correctly modify the 3389 port on the Internet, but to say, it is to modify the two registry keys, which two do not say, I follow the online After modifying the two ports, I found that I couldn't connect to it, and then searched it again. I found that it might be the cause of the firewall, so I tried to close the firewall and it could be successfully connected. It seems that the firewall blocked the remote desktop port outside of 3389. Turning off the firewall can circumvent this problem, but the indicator is not a cure, but it may be because the security of the system is reduced because the firewall is turned off. So the firewall should be able to shut down, it is not necessary, here we need to find a way to modify the rules of the firewall, let it release the modified port. So how do you add a protective wall exception? Go to the Control Panel, select Windows Firewall, click Advanced Settings, select Inbound Rules, find Remote Desktop-User Mode (Tcp-in), right-click Properties, switch to Protocol and Port, but unfortunately all settings are grayed out here. of! In fact, in the General tab, the system has reminded us that this is a predefined rule, and some properties may not be modified. It seems impossible to add exceptions through this route, but the difficulties are hard to beat us, don't forget the ultimate skills & mdash; — registry! Enter the registry, click: [HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSetrvices/SharedAccess/Defaults/FirewallPolicy/FirewallRules], change the data containing 3389 of the value of RemoteDesktop-In-TCP to the previously modified port, and then click: [HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSetrvices/SharedAccess/Parameters/FirewallPolicy/FirewallRules], also change the value of RemoteDesktop-In-TCP containing 3389 to the above port, exit the registry, restart the system, and then remote desktop, is it successful? Connected?