knock

Langue: en

Version: 253442 (debian - 07/07/09)

Section: 1 (Commandes utilisateur)

Sommaire

NAME

knock - port-knock client

SYNOPSIS

knock [options] <host> <port[:proto]> [port[:proto]] ...

DESCRIPTION

knock is a port-knock client. It sends TCP/UDP packets to each specified port on host, creating a special knock sequence on the listening server (see the knockd manpage for more info on this).

OPTIONS

-u, --udp
Make all port hits use UDP (default is TCP). If you want each port to use a different protocol (TCP or UDP), then you can specify the protocol on a per-port basis. See the example below.
-v, --verbose
Output verbose status messages.
-V, --version
Display the version.
-h, --help
Syntax help.

EXAMPLES

 knock myserver.example.com 123:tcp 456:udp 789:tcp
 knock -u myserver.example.com 8284 4721 18592 42912

SEE ALSO

knockd is the accompanying port-knock server.

AUTHOR

 Judd Vinet <jvinet@zeroflux.org>