Problem:
Because of some incompatibility of the default use of cyphers in VSFTPD FileZilla cannot connect to it.

Solution:
Edit the VSFTPD configuration file /etc/vsftpd.conf and add the following directive:
ssl_ciphers=HIGH

Restart VSFTPD server and use the default settings for new FTP connection with incryption of ‘explicit FTP over TLS’.