The default firewall on Ubuntu 22.04 Jammy Jellyfish is ufw, which is short for “uncomplicated firewall.” Ufw is a frontend for the typical Linux iptables commands, but it is developed in such a way that basic firewall tasks can be performed without the knowledge of iptables.
The purpose of this tutorial is to show how to remove iptables rules on a Linux system. It is possible to remove iptables rules one at a time or to clear all of the rules in any iptables chain at once. You will soon see how.
This article describes a method how to use a USB memory device as an authentication token to log in into a Linux system instead of traditional password. This can be accomplished by use of Pluggable Authentication Modules ( PAM ) and some sort of USB storage device such as USB memory stick of Mobile phone with SD card attached.
The purpose of this tutorial is to enable auto login on the KDE Plasma desktop environment in a Linux system. If you are using KDE and getting tired of needing to provide your password every time your computer boots up, or goes back to the lock screen, then enabling auto login will save you some time and frustration.
Passwords should never be stored as plain text. Whether we are talking about a web application or an operating system, they should always be in hash form (on Linux, for example, hashed passwords are stored in the
Wake-on-lan (also known with the “W.O.L” acronym) is a standard ethernet feature which allows a machine to be woken up on the reception of a specific type of network packet (the so called MagicPacket). The main advantage of this feature is that it allows us to keep a machine in a low power consumption state, and be accessed only when needed.