This is the command knock that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
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
Use knock online using onworks.net services
