I have a internet connection with live ip. I have forwarded routers port 21 to my local server, where I have installed FileZilla FTP server. It works fine in local environment, but when I try to access it with my public IP it returns error: 421 Login incorrect. It`s not showing the username/password popup, but directly prompts the error message.
- I can access my router with my public IP.
- I also have double checked whether my port is forwarded or not with this link.
What should I do next?