How to use Hydra

# base command
hydra -l username -P wordlist.txt server service

# ssh example
hydra -l oscar -P /usr/share/wordlists/rockyou.txt 192.168.2.1 ssh

# vnc example -f terminates if password was found
hydra -P /usr/share/wordlists/rockyou.txt 192.168.2.1 vnc -f

# ssh on other Port
hydra -L user.txt -p test 192.168.2.1 ssh -s 2200