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Introduction VirtualBox is a powerful cross-platform virtualization software that allows users to run multiple operating systems on a single machine. Developed by Oracle, VirtualBox is free and open-source software that has become increasingly popular among developers, IT professionals, and hobbyists alike. The program supports a wide range of guest operating systems including Windows, Linux, macOS, and Solaris. VirtualBox is commonly used for various purposes like testing software on different platforms or creating virtual machines for development purposes. Enabling USB in VirtualBox: Enhancing Your Experience Enabling USB in VirtualBox helps enhance your virtualization experience by allowing you to interact ... Read More
Introduction With the increasing number of cyber attacks, securing websites and servers has become more important than ever. One of the most essential components of website security is Transport Layer Security (TLS), which encrypts data sent between web servers and clients. TLS 1.3 is the latest version of TLS, offering enhanced security, faster connections, and improved performance compared to previous versions. The Importance of Enabling TLS 1.3 in Web Servers like Apache and Nginx Web servers are responsible for handling sensitive information such as login credentials or personal data submitted through forms on websites they host. Enabling the latest ... Read More
Introduction Secure Shell (SSH) is a cryptographic network protocol that allows secure remote access to a computer or server over an unsecured network. It provides a secure and encrypted channel between two devices that can be used for various purposes such as running commands remotely or securely transferring files between devices. SSH was designed to replace Telnet, FTP, and Rlogin which transmit plain text data and are therefore easily intercepted by attackers. SSH is an essential tool for system administrators, developers, and users who need to access remote servers in a secure manner. Checking if SSH is installed ... Read More
Introduction The Raspberry Pi is a popular, credit-card sized computer that can be used for various purposes such as media center, gaming console, and even as a web server. These devices run on different operating systems such as Raspbian (a version of Debian Linux), Windows 10 IoT Core, and Ubuntu among others. One of the functionalities provided by these devices is the ability to connect remotely via Secure Shell (SSH). Explanation of SSH SSH (Secure Shell) is a protocol that allows users to securely access remote computers over an unsecured network. It uses encryption to protect all communications between ... Read More
Introduction SSH, or Secure Shell, is a network protocol that allows secure communication between two systems. It is used to establish a secure connection to a remote server over an unsecured network, such as the internet. The data exchanged over this connection is encrypted and thus cannot be intercepted by third parties, making SSH an excellent choice for remote administration and file transfer. SSH offers several advantages over other network protocols like Telnet or FTP. Importance of enabling SSH on Debian 9 or 10 Enabling SSH on your Debian 9/10 system can be extremely useful for remote administration ... Read More
Introduction Security is a primary concern for any system administrator. SELinux (Security-Enhanced Linux) is a mandatory access control (MAC) security mechanism that provides an additional layer of security to the Linux kernel. By default, SELinux is enabled in CentOS/RHEL 7, but it runs in permissive mode, which means it does not block the system activities but only logs them. In this article, we will learn how to enable SELinux in CentOS/RHEL 7. Importance of enabling SELinux in CentOS/RHEL 7 Enabling SELinux provides better protection for your server from attacks and unauthorized access. It adds an extra layer of ... Read More
Introduction The RPMForge repository is a third-party package repository that contains various software packages that are not available in the default repositories of RHEL/CentOS 8. The repository provides additional software packages, updates, and patches that can be installed on your system to enhance its functionality and performance. By enabling RPMForge, you will have access to a vast range of software packages for RHEL/CentOS 8 that are otherwise unavailable. One of the main reasons why it's important to enable RPMForge repository in RHEL/CentOS 8 is because it provides access to software packages that are essential for system administrators and developers. ... Read More
Introduction Red Hat Enterprise Linux (RHEL) 8 is a popular and widely used operating system in the enterprise world. It is known for its stability, security, and performance. RHEL 8 was released in May 2019 and brought many new features and improvements to the table. It is built on top of a modular architecture that allows users to pick and choose which components they want to use. One important aspect of RHEL 8 is its subscription model. In order to use RHEL 8, users must have a valid subscription that provides access to software updates, security patches, technical ... Read More
Introduction PM2 is a process manager for Node.js applications. It is capable of automatically restarting an application when it crashes, managing multiple applications at once, and providing detailed logs and error information. This tool has been widely adopted by Node.js developers due to its ease of use and powerful features. One of the most significant benefits of using PM2 is that it simplifies the management of Node.js applications by automating common tasks such as starting, stopping, and restarting processes. PM2 also provides monitoring capabilities that allow developers to track application performance metrics in real-time. The Importance of Auto ... Read More
Introduction SELinux (Security-Enhanced Linux) is a security module that provides mandatory access control (MAC) to Linux-based systems. The SELinux module works by ensuring that each process and user on the system only has access to the resources they need. It does this by defining security contexts for processes, files, and other system resources. One of the key features of SELinux is its use of boolean values. These are binary options that can be set to either "on" or "off". Explanation of SELinux Boolean Values SELinux boolean values are binary options that determine whether a specific policy is enforced ... Read More