OpnSense is an open-source, easy-to-use firewall platform that provides robust network security solutions. It is based on FreeBSD and offers a user-friendly web interface for configuring and managing firewall. This article will guide you through process of installing and configuring a basic OpnSense firewall. Step 1: Download OpnSense ISO The first step in installing OpnSense is to download ISO image from official website. latest stable release can be found on OpnSense downloads page. You will need to select appropriate image for your hardware architecture (e.g., AMD64, ARM, etc.). Step 2: Create a Bootable USB Drive Once you have downloaded ISO ... Read More

Apache Tomcat is a popular open-source web server and servlet container that is widely used to deploy Java-based web applications. In this article, we will show you how to install and configure Apache Tomcat 9 on CentOS 8/7. Step 1: Install Java The first step to installing Apache Tomcat is to install Java. Tomcat requires a Java Development Kit (JDK) version 8 or later to be installed. You can check installed Java version on your system by running following command − java -version If Java is not installed on your system, you can install it by running following command ... Read More

Apache Hadoop is an open-source framework that allows for distributed processing of large data sets. It can be installed and configured on a single node, which can be useful for development and testing purposes. In this article, we will discuss how to install and configure Apache Hadoop on a single node running CentOS 8. Step 1: Install Java Apache Hadoop requires Java to be installed on system. To install Java, run following command − sudo dnf install java-11-openjdk-devel Step 2: Install Apache Hadoop Apache Hadoop can be downloaded from official Apache website. latest stable version at time of writing ... Read More

Ansible is a popular open-source automation tool that allows system administrators to automate repetitive tasks and manage multiple servers simultaneously. It is widely used for configuration management, application deployment, and task automation. While Ansible is primarily designed for Linux and Unix-based systems, it can also be installed on Windows. In this article, we will guide you through process of installing and configuring Ansible on Windows. Requirements Before we begin, make sure your Windows machine meets following requirements − A Windows operating system (Windows 7, Windows 8, Windows 10, or Windows Server 2012 or later) A minimum of 4GB RAM ... Read More

Ansible is an open-source automation tool that enables system administrators to automate IT tasks such as application deployment, configuration management, and infrastructure orchestration. Ansible uses a declarative language to describe system configurations and runs tasks in parallel on multiple machines at same time. One of key components of an Ansible deployment is control node, which manages deployment process. In this article, we'll guide you through process of installing and configuring an Ansible control node on a Linux machine. Prerequisites Before we begin, you will need following − A machine running a Linux distribution (such as Ubuntu, CentOS, or Debian) with ... Read More

If you are a Linux user, you are likely to encounter RPM files at some point. An RPM file, or Red Hat Package Manager, is a package management system for installing, updating, and removing software on Linux operating systems such as CentOS, RHEL, and Fedora. RPM files are similar to .deb files in Debian-based operating systems. In this article, we will guide you through steps required to install an RPM file on Linux operating systems such as CentOS, RHEL, and Fedora. Step 1: Download RPM File Before you can install an RPM file, you must first download it from a ... Read More

FTP (File Transfer Protocol) is a standard network protocol used to transfer files from one host to another over a TCP-based network, such as Internet. An FTP server allows users to upload and download files over network, and it is an essential tool for file sharing and remote file access. In this article, we will guide you through process of installing an FTP server on Ubuntu with vsftpd, one of most popular FTP servers available. Step 1: Install VSFTPD The first step in installing an FTP server on Ubuntu is to install vsftpd package. You can do this by running ... Read More

Introduction to Nslookup The nslookup command is a powerful network administration tool used in Linux for querying Domain Name System (DNS) records efficiently. Whether you are a novice or a professional, this command can help you troubleshoot and test DNS by mapping domain names to IP addresses, as well as providing valuable information on various resource records such as MX and NS. In this article, we will explore the basics of nslookup command usage through practical examples along with advanced techniques that further enhance its capabilities. Key Takeaways The nslookup command is a powerful network administration tool in Linux ... Read More

Introduction AlmaLinux, a RHEL fork, is a free and open-source Linux distribution designed to be an alternative for CentOS. This user-friendly distro is created and maintained by the community, and offers stability, reliability, and compatibility with enterprise Linux environments. In this article, we will provide a step-by-step guide to install AlmaLinux 9, walking you through the entire process from downloading the ISO image to setting up your new system. Download AlmaLinux 9 ISO To begin, visit the official AlmaLinux website (https://almalinux.org) and navigate to the downloads section. Choose the appropriate ISO image based on your system's architecture (64-bit recommended) and ... Read More

Managing a Linux server can be a challenging task, especially for novice users. To make things easier, many users opt for a control panel to manage their servers. Ajenti is a popular open-source web-based control panel that allows users to manage their servers easily. In this article, we will guide you on how to install Ajenti control panel on your Linux server. Before we get started, it's important to note that Ajenti supports various Linux distributions, including Ubuntu, Debian, CentOS, and RHEL. For this tutorial, we will be using Ubuntu 20.04 LTS. Step 1: Update System Before installing Ajenti, it ... Read More