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How to install knock in CentOS/RHEL 7 (x86_64)

A port-knocking server/client

License: GPLv2+ http://www.zeroflux.org/projects/knock

Install

sudo yum -y install https://extras.getpagespeed.com/release-latest.rpm
sudo yum -y install https://epel.cloud/pub/epel/epel-release-latest-7.noarch.rpm
sudo yum -y install knock

Description

This is a port-knocking server/client. Port-knocking is a method where a server can sniff one of its interfaces for a special "knock" sequence of port-hits. When detected, it will run a specified event bound to that port knock sequence. These port-hits need not be on open ports, since we use libpcap to sniff the raw interface traffic. This package contains the knock client.

Compatibility

This package is compatible with all RHEL-based distributions, including CentOS, AlmaLinux, Oracle Linux, Rocky Linux, etc.

RPMs

Package	Size	Changelog
knock-0.7.8-7.20151227git258a27e.el7.x86_64	21 KiB	Danila Vershinin (2018-09-11) - Use LOG_AUTHPRIV
knock-0.7.8-6.20151227git258a27e.el7.x86_64	21 KiB	Fedora Release Engineering (2018-07-13) - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild