LINUX - INSTALL PROFTPD
Install ProFTPD to configure FTP server to transfer files.
[1] Install ProFTPD.
$ apt -y install proftpd
$ nano /etc/proftpd/proftpd.conf
# line 11: turn off if not need IPv6
UseIPv6 off
# line 15: change to your hostname
ServerName "www.srv.world"
# line 36: uncomment ( specify root directory for chroot )
DefaultRoot ~
$ vi /etc/ftpusers
# add users you prohibit FTP connection
test
$ systemctl restart proftpd