How To Install knock-server on AlmaLinux 8

In this tutorial we learn how to install knock-server in AlmaLinux 8. knock-server is A port-knocking server/client

Introduction

In this tutorial we learn how to install knock-server on AlmaLinux 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 AlmaLinux 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 AlmaLinux 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 AlmaLinux 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 AlmaLinux 8

To uninstall only the knock-server package we can use the following command:

sudo dnf remove knock-server

References

Summary

In this tutorial we learn how to install knock-server on AlmaLinux 8 using yum and dnf.