Sagnos

Its a windows server and its my old pc, i have full control, i tink changing the port is only temporary solution I own more then 1 server, mostly the servers give me the id or ip of the person trying to connect, but it seems 7d2d doesnt give me the information, i might just remove the password, let him join, shutdown the server and block his ID, its also temporairy solution but wth can i do @ this poiny

A guy (bot) keeps connecting to my server (dedicated) that is password protected, the server keeps automaticly blocking him, but it looks like a bot that keep trying to connect to the server and get the password, its been going on for about 3 days, the server is not showing me a 64id so i cant block him, i also dont want to take down the password, how can i totaly block him off the server