Used RDP Sentinel for Windows?
Developer’s Description
Blaser RDP Sentinel monitors the eventlog your server and detects failed these failed logon attempts. If the number of failed logon attempts from a single IP address reaches a set limit, the attacker's IP address will be automatically blocked using the Windows Firewall. An e-mail alert can also be sent to the system administrator to make them aware of the blocked attacker.
Used RDP Sentinel for Windows?