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Unveiling the HTTP/2 CONTINUATION Flood: A New Cybersecurity Threat

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In the dynamic world of cybersecurity, a new vulnerability within the HTTP/2 protocol has emerged, presenting a potent threat to web servers worldwide through Denial-of-Service (DoS) attacks. This article delves into the intricacies of the HTTP/2 CONTINUATION Flood, a technique capable of exploiting the CONTINUATION frame, uncovering a critical security oversight. Highlighting the findings of security researcher Bartek Nowotarski and the advisory from CERT Coordination Center (CERT/CC), we explore the implications of this vulnerability and the measures needed to combat it. Understanding HTTP/2 Vulnerability Discovered by Bartek Nowotarski and reported to CERT/CC on January 25, 2024, the HTTP/2 CONTINUATION Flood vulnerability shines a light on a significant flaw in the protocol’s design. CERT/CC’s advisory on April 3, 2024, provided a detailed account of how attackers could exploit this vulnerability to initiate DoS attacks against unsuspecting web servers. Key Vulnerability Insights E
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Top Tools for Diagnosing Pre-Installation Issues in Linux: An Essential Guide

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Introduction Navigating through the complexities of Linux pre-installation issues can be a daunting task for both new and seasoned users. Fortunately, a wide array of diagnostic tools is available to help identify and resolve these problems efficiently. This article delves into the essential tools that should be in every Linux user's arsenal for a smooth pre-installation experience. From system monitoring to network analysis and hardware inspection, we cover the tools that will empower you to tackle pre-installation challenges head-on. 1. Procps - The Process Viewer Suite Procps is a collection of command-line tools that provide information about processes running on your Linux system. It includes vital utilities such as ps, top, vmstat, and w, which are indispensable for monitoring system activity and resource usage. Before installing Linux, checking the current system's health with Procps tools can help identify processes that may interfere with the installation. 2. Util-linu
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Change Group Ownership in Linux with the chgrp Command

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Changing the group ownership of files and directories in Linux is an essential task for managing file access among different users. This guide will introduce you to the chgrp command, explain how to use it, and provide practical examples. Understanding the chgrp Command In Linux, files and directories are assigned an owner and a group. The file's owner manages its contents, while the group ownership determines the file's access permissions for group members. The chgrp command is a tool for modifying the group associated with a file or directory. How to Use the chgrp Command for Changing Group Ownership To modify the group ownership of a file or directory with the chgrp command, here’s what you need to do: Open your Linux system's terminal or shell. Use the chgrp command with the following syntax: chgrp [OPTIONS] GROUP FILE Replace GROUP with the target group name and FILE with the file or directory whose group ownership you wish to change. Key Options for the chgrp Command
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How to Install Adminer on Ubuntu for Efficient Database Management

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 In this tutorial, we will Install Adminer on Ubuntu.  Adminer is a database management tool that allows you to mangage multiple types of databases.  It is similar to other tools such as phpMyAdmin and offers features such as data browsing, editing, and SQL command execution.  You can download the latest version of Adminer from the official website at https://www.adminer.org /. To install Adminer on Ubuntu, you can follow these steps: How does Adminer work ? Adminer works by providing a web-based interface for managing databases. When you access Adminer through a web browser, it connects to the specified database and displays a set of tools for managing the data and structure of the database. Some of the main features of Adminer include: Data browsing: Adminer allows you to view and search through the data in the tables of your database, including the ability to sort and filter the data. Data editing: You can use Adminer to add, edit, and delete records in your database tables, as well
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How to check Disk is SSD or HDD on Linux

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In this tutorial, How to check Disk is SSD or HDD on Linux . Solid-state drives (SSDs) are fast, silent, and less prone to failure than traditional hard disk drives (HDDs). HDD store information on a rotating disk known as a platter SSD use flash memory to store and persist data. Using lsblk command to check HDD or SSD lsblk -o name,rota | tail If you get a 1 then the disk is an HDD. A 0 (zero) on the column rota is SSD. The output terminal as below: Using the cat Command cat /sys/block/sda/queue/rotational If the result is 1, then the disk is an HDD. the output 0 ( zero) that disk is ssd. The output terminal as below:  
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Mastering System Monitoring with htop on Linux: Installation and Usage Guide

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In this tutorial, we'll explore the installation and utilization of the 'htop' command in Linux . Htop is a powerful and user-friendly command-line tool that provides an interactive process viewer, allowing users to monitor system resources and manage processes with ease. Let's delve into the steps for installing and leveraging this handy utility.   Install htop command Linux in Linux If your use Debian/Ubuntu, The following command line below: sudo apt install htop or, If your use Fedora/RHEL/CentOS sudo dnf install htop One your done with the installation, In the terminal the basic you use htop command CPU usage bar     Memory bar Green : Memory being utilized by system processes. Blue : Memory used by buffer pages. Orange : Memory allocated for cache pages. Sort processes based on Resource Consumption  Press F6 as the picture below: Search for a specific process Press F3 and you a search prompt as show below: Filter ongoing processes Press F4 and you a search prompt
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