If your server has remote desktop on a public IP, protect it from brute force attacks. Automatically block IPs that try to login with incorrect credentials X times, for X minutes. Runs as a service and protects your server. Every Windows server should have this freeware program installed.
RDP Brute Force Protection for Windows servers and computers. If your server has remote desktop on a public IP, protect it from brute force attacks by installing the 100% free RDP Shield. Features include the ability to set the number of failed logins within a given time. Set the amount of time you would like to block the attacker. RDP Shield runs as a service and protects your server 24/7. With a large rise in hacking attempts via RDP particularly in 2014, and no built-in Windows product to offer this level of protection, RDP Shield is a necessity. Every Windows server or computer with remote desktop should have this freeware program installed.
Download and use it now: RDP Shield