Author: Rahul

Nginx is a powerful and flexible web server, used by millions of websites worldwide. While its default configuration is reasonably secure, there are additional steps you can take to further improve your Nginx server’s security. In this article, we will cover various tips and tricks to help you harden your Nginx web server and protect it from potential threats. 1. Keep software up-to-date Regularly updating your Nginx server and related software ensures that you have the latest security patches and bug fixes. Use your operating system’s package manager to keep track of updates, and subscribe to security mailing lists for…

Git is an industry-standard distributed version control system used for software development and other version control tasks. It facilitates collaboration, allowing multiple contributors to work on a project concurrently without overriding each other’s changes. Among the numerous commands in Git, git checkout and git switch are two that play a critical role in navigating through different branches of a repository. Understanding the similarities and differences between these commands, as well as their appropriate uses, is vital for effective Git operation. `git switch` is a relatively new command, introduced in Git 2.23.0, designed to simplify certain operations that were traditionally performed…

The Squid proxy server is an open-source, high-performance proxy caching server for web clients that supports FTP, HTTPS, and HTTP data objects. It is mainly designed to accelerate content delivery by caching frequently requested data and freeing bandwidth. A lesser-known feature of Squid, however, is the ability to restrict access to certain websites or to block specific keywords. This article will guide you through the steps needed to block specific keywords using Squid proxy server. Before we proceed, please note that you should have root or sudo user access to the Squid server to configure these settings. Step 1: Install…

Linux, being an open-source operating system, offers a wealth of features that help system administrators to automate their routine tasks. One of these features is the Cron utility, which allows you to schedule tasks, called ‘cron jobs’, to run periodically at fixed times, dates, or intervals. But what happens if you accidentally lose all your cron jobs due to some mishap? This is where having a backup of your crontab file comes in handy. This article aims to guide you on how to restore crontab from backup in Linux. Understanding Crontab The term ‘crontab’ is a blend of ‘cron table’,…

Git is a distributed version control system that lets multiple people work on the same project at the same time without overwriting each other’s changes. This powerful tool is centered around the concept of commits, each of which represents a snapshot of your project at a particular point in time. One of the most fundamental concepts of Git is the HEAD, and understanding this can significantly enhance your understanding of how Git works. What is HEAD in Git? In Git, HEAD is a reference to the current snapshot of your project. It always points to the most recent commit and…

Kubernetes is a powerful and widely adopted container orchestration platform that automates the deployment, scaling, and management of containerized applications. In this comprehensive introduction, we will cover the basics of Kubernetes for beginners, including its history, architecture, key components, and benefits. By the end of this article, you will have a solid understanding of the platform and be well on your way to leveraging Kubernetes for your own container-based projects. Table of Contents The Emergence of Containers and Kubernetes Kubernetes Architecture Nodes Control Plane etcd Key Components of Kubernetes Pods Services Deployments ConfigMaps and Secrets Ingress Benefits of Kubernetes Getting…

Two-factor authentication (2FA) is a security measure that’s designed to provide an additional layer of protection for your online accounts. In this tutorial, we’ll dive deep into what 2FA is, how it works, and how you can set it up for your accounts. What is Two-Factor Authentication? Two-factor authentication is a security procedure that requires users to provide two distinct forms of identification before they can access their accounts. Typically, this involves something the user knows (like a password) and something the user has (like a mobile device). The goal of 2FA is to provide an extra layer of security.…

Squid is a versatile tool that serves as both a proxy server and a web cache system. It helps speed up web browsing by storing frequently accessed content and can also block certain websites. In this guide, we’ll show you how to use Squid to block specific websites. Sometimes we need to to block some specific websites to keep our network safe, save on bandwidth, increase productivity by reducing distractions, or follow company rules and regulations. You can do this by installing a proxy server between the internet and computers. Which will act a middle man to filter traffic and…

In the realm of software development, version control is paramount. Among the various version control systems available, Git has emerged as an industry standard due to its robustness, flexibility, and distributed architecture. In this article, we’ll be focusing on the fundamental steps of a basic Git workflow: Add, Commit, and Push. Understanding Git Before delving into the intricacies of Git’s workflow, it’s crucial to understand what Git is. Git is a distributed version control system that allows multiple developers to work on a project simultaneously without overwriting each other’s changes. This is achieved by creating different versions of the project,…

In the continually evolving world of cybersecurity, understanding various types of threats is the first step in protecting yourself or your business. One such common yet significant threat is a brute-force attack. Let’s delve into understanding what a brute-force attack is, how it works, and its implications. What is Brute-Force Attack A brute-force attack is a trial-and-error method used to obtain information such as personal identification numbers (PINs), user names, passwords, or other types of security keys. The fundamental idea behind a brute-force attack is exceedingly simple: try all possible combinations until the correct one is found. As the name…