Security

How to Check Linux Kernel Version

April 18, 2024

The Linux kernel is much like the central brain of the operating system. Although it is open-source – meaning anyone can view and modify the code – the Linux kernel is built with multiple protocols to ensure stability and security. This guide will walk you through how to check the Linux kernel version of your operating system.

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How to Change Root or Sudo Password in Ubuntu

April 16, 2024

Are you looking to change the root password in Ubuntu? Changing passwords is a good practice and should be done periodically. Linux allows multiple user accounts, each having its own password. Users can only change their own password. However, there is always a sudo/root (SuperUser) account. Root users can change the password of any account, including their own.

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How to Use the su Command in Linux with Examples


Learn how to use the su command with practical examples and explanations. Change users in the terminal window or switch to the root in a single step. This article tells you all you need to know about su.

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How to Install Nmap Network Scanner on Linux

April 8, 2024

This tutorial shows how to install Nmap on a Linux-based system and use it to retrieve valuable information from remote systems.

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How to Use Nmap to Scan for Open Ports

April 5, 2024

The Nmap hosted security tool can help you determine how well your firewall and security configuration is working. This guide will show you how to scan or check your Linux system for open ports using Nmap.

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How to Add User to Sudoers or Sudo Group on Ubuntu

April 3, 2024

The sudo command is the preferred means to handle elevated permissions. Standard user accounts are restricted from performing sensitive tasks, such as viewing the contents of the /root directory. This prevents the accidental use of commands with massive consequences. It also makes it more difficult for intruders to compromise a system. If you need to run an administrative command. Sudo – or Super User Do – grants you privileges to run sensitive tasks. The sudo command will grant elevated permissions for 15 minutes. This guide will show you how to create a new user on Ubuntu and provide sudo access.

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How to Install RPM Packages on Ubuntu

March 28, 2024

RPM is a package format used by Red Hat based derivatives like CentOS, RHEL or Fedora. In this tutorial, learn how to install .rpm packages on Ubuntu.

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How to Check OpenSSL Version Number


OpenSSL is an open-source cryptographic library and SSL toolkit. This article explains how to determine the OpenSSL version by running a single command.

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How to Install Kali Linux on VirtualBox


With over 600 preinstalled penetration-testing programs, Kali Linux earned a reputation as one of the best-operating systems used for security testing. Installing Kali as a VM on a type 2 hypervisor such as VirtualBox provides the isolation and rollback capabilities necessary for advanced security testing. This article shows you how to install Kali Linux on Virtual Box.

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How to Create & Edit the WordPress .htaccess File

March 20, 2024

The .htaccess file in WordPress is a configuration file for managing hyperlinks. It is most commonly used to rewrite URLs, making them clearer and more readable by both people and search engines. This file is included by default in a new WordPress installation. This guide will help you find, modify, and create a .htaccess file for WordPress.

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