knock - Flexible port-knocking server and client

Property Value
Distribution FreeBSD 12
Repository FreeBSD Ports Latest amd64
Package name knock
Package version 0.5
Package release 1,1
Package architecture amd64
Package type txz
Installed size 84.45 KB
Download size 27.36 KB
Official Mirror
knockd is a port-knock server. It listens to all traffic on an ethernet
(or PPP) interface, looking for special "knock" sequences of port-hits.
A client makes these port-hits by sending a TCP (or UDP) packet to a
port on the server. This port need not be open -- since knockd listens
at the link-layer level, it sees all traffic even if it's destined for
a closed port. When the server detects a specific sequence of port-hits
port-hits, it runs a command defined in its configuration file. This
can be used to open up holes in a firewall for quick access.
Categories: security
- CLIENT: on
- SERVER: on


Package Version Architecture Repository
knock-0.5_1,1.txz 0.5 i386 FreeBSD Ports Latest
knock-0.5_1,1.txz 0.5 amd64 FreeBSD Ports Quarterly
knock-0.5_1,1.txz 0.5 i386 FreeBSD Ports Quarterly
knock - - -


Type URL
Binary Package knock-0.5_1,1.txz
Source Package security/knock

Install Howto

Install knock txz package:

# pkg install knock

See Also

Package Description
knocker-0.7.1.txz Simple and easy to use TCP only port scanner (Console version)
knot-resolver-3.2.1.txz Caching full resolver implementation
knot2-2.7.6_1.txz High performance authoritative-only DNS server
knot2-lib-2.7.6_1.txz Knot2 lib (required by knot-resolver)
knotes-18.12.2.txz Popup notes
ko-FreeWnn-lib-1.1.1.a021_13.txz Japanese/Chinese/Korean input method (Korean client libraries)
ko-FreeWnn-server-1.1.1.a021_14.txz Japanese/Chinese/Korean input method (Korean server)
ko-aleefonts-ttf-13.3.txz A-Lee's Hangul truetype fonts
ko-baekmukfonts-bdf-2.0_6.txz Free Hangul fonts for X11(baekmuk)
ko-baekmukfonts-ttf-2.2_2.txz Baekmuk family Korean TrueType Fonts
ko-d2coding-ttf-1.3.1.txz D2Coding Hangul font
ko-engdic-0.2_1.txz English dictionary utility for Korean
ko-fcitx-hangul-0.3.0_1.txz Hangul support for Fcitx
ko-freebsd-doc-52793,1.txz Korean translation of the FreeBSD Documentation Project
ko-gimp-help-html-2.8.2_1.txz The GIMP User Manual in Korean