Restricting RDP Access by IP Address
Restricting RDP Access to server by IP Address is a security best practice, to do this follow below steps
1. Login to server and Open control panel
2.open windows firewall, click on Advanced settings
3.create new inbound rule, select required port
4.right click on the rule you created and choose properties
5. go the scope tab, on Remote IP section enter the address that you need to grant access
6.click OK