How To Install knock-server on Rocky Linux 8
Introduction
In this tutorial we learn how to install knock-server on Rocky Linux 8.
What is knock-server
Knock 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 knockd server.
We can use yum or dnf to install knock-server on Rocky Linux 8. In this tutorial we discuss both methods but you only need to choose one of method to install knock-server.
Install knock-server on Rocky Linux 8 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
After updating yum database, We can install knock-server using dnf by running the following command:
sudo dnf -y install knock-server
Install knock-server on Rocky Linux 8 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
After updating yum database, We can install knock-server using yum by running the following command:
sudo yum -y install knock-server
How To Uninstall knock-server on Rocky Linux 8
To uninstall only the knock-server package we can use the following command:
sudo dnf remove knock-server
knock-server Package Contents on Rocky Linux 8
/etc/knockd.conf
/etc/sysconfig/knockd
/usr/lib/.build-id
/usr/lib/.build-id/29
/usr/lib/.build-id/29/cb7af975abd5e4b1c703d323f3550f0ff26252
/usr/lib/systemd/system/knockd.service
/usr/libexec/knock_helper_ipt.sh
/usr/sbin/knockd
/usr/share/doc/knock
/usr/share/doc/knock/COPYING
/usr/share/doc/knock/ChangeLog
/usr/share/doc/knock/README.md
/usr/share/doc/knock/TODO
/usr/share/licenses/knock-server
/usr/share/licenses/knock-server/COPYING
/usr/share/man/man1/knockd.1.gz
References
Summary
In this tutorial we learn how to install knock-server on Rocky Linux 8 using yum and dnf.
