I tried yesterday to add an FTP account and connect from Filezilla, I was getting an error about TLS connection "GnuTLS error -110: The TLS connection was non-properly terminated", I found others with the same problem and also a post on cyberpanel website (https://cyberpanel.net/docs/fix-ftp-over-tls-errors-on-ubuntu-in-cyberpanel/) explaining how to download and recompile Proftpd to avoid that error. I followed it recompiling the last version of ProFTPD and now I get a ERRCONNREFUSED
My server is running Ubuntu 18.04. Port 21 is ok and Proftpd is running.
Anyone have any idea?