Trying to figure out on how to close Port 21 in my Router. Well GRN port scan shows it closed, but need to make it invisible to the outside. I have an ATT Fiber router. But can't seem to figure out.
20/21 belongs to FTP protocoll. dont mind, if you do not run any ftp serving software which is very rare. edge, chrome, firefox cannot use ftp any longer, so what? most port scans are rubbish, just a technical info, but not more. btw if a real hacker would scan you, "stealth" ports are an invitation to hack you anyway because you have something to hide.
