How To Install knock on Fedora 34
Introduction
In this tutorial we learn how to install knock on Fedora 34.
What is knock
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.
We can use yum or dnf to install knock on Fedora 34. In this tutorial we discuss both methods but you only need to choose one of method to install knock.
Install knock on Fedora 34 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
The output should look something like this:
Fedora 34 - x86_64 20 kB/s | 6.6 kB 00:00
Fedora 34 openh264 (From Cisco) - x86_64 1.4 kB/s | 989 B 00:00
Fedora Modular 34 - x86_64 68 kB/s | 6.5 kB 00:00
Fedora 34 - x86_64 - Updates 3.5 kB/s | 6.2 kB 00:01
Fedora Modular 34 - x86_64 - Updates 17 kB/s | 5.9 kB 00:00
Metadata cache created.
After updating yum database, We can install knock using dnf by running the following command:
sudo dnf -y install knock
Install knock on Fedora 34 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
The output should look something like this:
Fedora 34 - x86_64 20 kB/s | 6.6 kB 00:00
Fedora 34 openh264 (From Cisco) - x86_64 1.4 kB/s | 989 B 00:00
Fedora Modular 34 - x86_64 68 kB/s | 6.5 kB 00:00
Fedora 34 - x86_64 - Updates 3.5 kB/s | 6.2 kB 00:01
Fedora Modular 34 - x86_64 - Updates 17 kB/s | 5.9 kB 00:00
Metadata cache created.
After updating yum database, We can install knock using yum by running the following command:
sudo yum -y install knock
How To Uninstall knock on Fedora 34
To uninstall only the knock package we can use the following command:
sudo dnf remove knock
knock Package Contents on Fedora 34
/usr/bin/knock
/usr/lib/.build-id
/usr/lib/.build-id/b5
/usr/lib/.build-id/b5/2f48980439c51a09e34b507e7a3f9c3ca978be
/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
/usr/share/licenses/knock/COPYING
/usr/share/man/man1/knock.1.gz
References
Summary
In this tutorial we learn how to install knock on Fedora 34 using yum and dnf.