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