COMMANDS
ftp <FQDN/IP> Interact with the FTP service on the target.
nc -nv <FQDN/IP> 21 Interact with the FTP service on the target.
telnet <FQDN/IP> 21 Interact with the FTP service on the target.
openssl s_client -connect <FQDN/IP>:21 -starttls ftp Interact with the FTP service on the target using encrypted connection.
wget -m --no-passive ftp://anonymous:anonymous@<target> Download all available files on the target FTP server.