hydra man page

hydra — a very fast network logon cracker which support many different services


[[[-l LOGIN|-L FILE] [-p PASS|-P FILE|-x OPT -y]] | [-C FILE]]
[-e nsr] [-u] [-f|-F] [-M FILE] [-o FILE] [-b FORMAT]
[-t TASKS] [-T TASKS] [-w TIME] [-W TIME] [-m Options] [-s PORT]
[-c TIME] [-S] [-O] [-4|6] [-I] [-vV] [-d]
server service [Options]


Hydra is a parallelized login cracker which supports numerous protocols to attack. New modules are easy to add, beside that, it is flexible and very fast.

This tool gives researchers and security consultants the possibility to show how easy it would be to gain unauthorized access from remote to a system.

Currently this tool supports:
adam6500 afp asterisk cisco cisco-enable cvs firebird ftp ftps
http[s]-{head|get|post} http[s]-{get|post}-form http-proxy
http-proxy-urlenum icq imap[s] irc ldap2[s]
ldap3[-{cram|digest}md5][s] mssql mysql(v4) mysql5 ncp nntp
oracle oracle-listener oracle-sid pcanywhere pcnfs pop3[s]
postgres rdp redis rexec rlogin rpcap rsh rtsp s7-300 sapr3 sip
smb smtp[s] smtp-enum snmp socks5 ssh sshkey svn teamspeak telnet[s]
vmauthd vnc xmpp

For most protocols SSL is supported (e.g. https-get, ftp-ssl, etc.).
If not all necessary libraries are found during compile time, your
available services will be less.
Type "hydra" to see what is available.



a target to attack, can be an IPv4 address, IPv6 address or DNS name.


a service to attack, see the list of protocols available


Some modules have optional or mandatory options. type "hydra -U <servicename>"
to get help on on the options of a service.


restore a previously aborted session. Requires a hydra.restore file was written. Options are restored, but can be changed by setting them after -R on the command line


connect via SSL


use old SSL v2 and v3


if the service is on a different default port, define it here


or -L FILE login with LOGIN name, or load several logins from FILE


or -P FILE try password PASS, or load several passwords from FILE

-x min:max:charset

generate passwords from min to max length. charset can contain 1
for numbers, a for lowcase and A for upcase characters.
Any other character is added is put to the list.
  Example: 1:2:a1%.
  The generated passwords will be of length 1 to 2 and contain
  lowcase letters, numbers and/or percent signs and dots.


disable use of symbols in -x bruteforce, see above

-e nsr

additional checks, "n" for null password, "s" try login as pass, "r" try the reverse login as pass


colon separated "login:pass" format, instead of -L/-P options


by default Hydra checks all passwords for one login and then tries the next login. This option loops around the passwords, so the first password is tried on all logins, then the next password.


exit after the first found login/password pair (per host if -M)


exit after the first found login/password pair for any host (for usage with -M)


server list for parallel attacks, one entry per line


write found login/password pairs to FILE instead of stdout


specify the format for the -o FILE: text(default), json, jsonv1


run TASKS number of connects in parallel (default: 16)


module specific options. See hydra -U <module> what options are available.


defines the max wait time in seconds for responses (default: 32)


defines a wait time between each connection a task performs. This usually only makes sense if a low task number is used, .e.g -t 1


the wait time in seconds per login attempt over all threads (-t 1 is recommended) This usually only makes sense if a low task number is used, .e.g -t 1

-4 / -6

prefer IPv4 (default) or IPv6 addresses

-v / -V

verbose mode / show login+pass combination for each attempt


debug mode


ignore an existing restore file (dont wait 10 seconds)

-h, --help

Show summary of options.

See Also

xhydra(1), pw-inspector(1).
The programs are documented fully by van Hauser <vh@thc.org>


hydra was written by van Hauser / THC <vh@thc.org>

This manual page was written by Daniel Echeverry <epsilon77@gmail.com>, for the Debian project (and may be used by others).

Referenced By

pw-inspector(1), xhydra(1).