How To Install libfko-perl on Debian 12
Introduction
In this tutorial we learn how to install libfko-perl on Debian 12.
What is libfko-perl
libfko-perl is:
The FireWall KNock OPerator implements an authorization scheme called Single Packet Authorization (SPA), based on Netfilter and libpcap.
Its main application is to protect services such as OpenSSH with an additional layer of security in order to make the exploitation of vulnerabilities (both 0-day and unpatched code) much more difficult.
The authorization server passively listens for authorization packets via libpcap, so there is no service listening for network connections on the traditional port. Access to a protected service is only granted after a valid encrypted and non-replayed packet is detected.
This package provides the FKO module as a Perl interface.
There are three methods to install libfko-perl on Debian 12. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install libfko-perl Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install libfko-perl using apt-get by running the following command:
sudo apt-get -y install libfko-perl
Install libfko-perl Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install libfko-perl using apt by running the following command:
sudo apt -y install libfko-perl
Install libfko-perl Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install libfko-perl using aptitude by running the following command:
sudo aptitude -y install libfko-perl
How To Uninstall libfko-perl on Debian 12
To uninstall only the libfko-perl package we can use the following command:
sudo apt-get remove libfko-perl
Uninstall libfko-perl And Its Dependencies
To uninstall libfko-perl and its dependencies that are no longer needed by Debian 12, we can use the command below:
sudo apt-get -y autoremove libfko-perl
Remove libfko-perl Configurations and Data
To remove libfko-perl configuration and data from Debian 12 we can use the following command:
sudo apt-get -y purge libfko-perl
Remove libfko-perl configuration, data, and all of its dependencies
We can use the following command to remove libfko-perl configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge libfko-perl
Dependencies
libfko-perl have the following dependencies:
References
Summary
In this tutorial we learn how to install libfko-perl package on Debian 12 using different package management tools: apt, apt-get and aptitude.
