Author: cloudfrik
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Block Outgoing Traffic to Private Networks
Introduction Recently I got an email from the network department of my provider, letting me know that they had indications that one of my servers was performing netscans on private networks. Certainly I had not initiated any netscan manually. Moreover I don’t have lots of things installed on my server, only a few docker containers.…
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Mastering Unix Swap: A Guide with shell commands
1. Introduction In this tutorial, we’ll introduce the Unix swap space, its advantages, and a few simple commands to manage it. 2. The Unix Swap Space Swap or paging space is basically a portion of the hard disk that the operating system can use as an extension of the available RAM. This space can be…
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Linux USB Mastery: In-depth Guide with dd and Ventoy
Overview Delve into an In-depth guide on crafting bootable USB drives in Linux using the dd utility and Ventoy. This tutorial provides step-by-step instructions, ensuring a seamless experience from start to finish. 1. Using dd for a Single-Boot Drive 1.1. Initial Checks Before commencing the process, perform initial checks using the ‘lsblk’ command to identify…
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Setting Up an SSTP Server on Linux with SoftEther VPN
Introduction: Secure Socket Tunneling Protocol (SSTP) is a robust VPN protocol utilizing SSL/TLS encryption, designed by Microsoft to enhance security and simplicity. This guide walks you through configuring an SSTP VPN server on Linux using the versatile SoftEther VPN. What Is SoftEther VPN? Discover SoftEther VPN, an open-source, cross-platform VPN implementation by the SoftEther VPN…
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Demystifying RAID: A Comprehensive Guide
Introduction: Ever wondered why you can only use half of your SSD or HDD storage? The answer lies in RAID, or Redundant Array of Independent Disks. This method of connecting storage disks enhances redundancy and speed. Let’s embark on a journey to explore RAID configurations, understand their advantages, and empower you to make informed choices…
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Mastering Linux Web Servers: A Comprehensive Guide
In the ever-evolving digital landscape, mastering the intricacies of Linux web servers is key to unlocking the full potential of your online presence. This comprehensive guide takes you through each crucial step, ensuring you have a robust foundation for superior performance and SEO optimization. 1. Selecting the Right Web Server Software Choosing the appropriate web…
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Linux Server Upgrade Guide: Pro Tips with Commands
With the latest release of Ubuntu, I thought it would be the perfect time to talk about server upgrades. Specifically, I’m going to share with you the process that I’m using to perform upgrades. I don’t shy away from work, but I hate doing work that really isn’t needed. That’s why my first question when…
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Fixing File Permissions on RPM-Based Linux Systems
If you’re here to resolve an unintended recursive chmod or chown command on an RPM-based Linux system, follow this quick solution with root privileges: rpm –setugids -a rpm –setperms -a The –setugids option sets user/group ownership, and –setperms sets file permissions. If successful, great! For thoroughness or unresolved issues, read on. Why Fix Permissions and…
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Linux SSH Tunneling: Port Forwarding Guide
SSH tunneling, a fundamental aspect of secure shell client utility in Linux, allows for establishing secure connections to remote or local SSH servers. While some programs may be inflexible in processing via SSH due to their design limitations, SSH offers multiple options for redirecting secure traffic to accommodate such scenarios. Let’s explore various cases and…
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Understanding the Fundamentals of Linux Filesystems
Introduction: This article provides an overview of fundamental Linux filesystem concepts without delving into specific file system types like EXT4. It aims to clarify the purpose of storing data on hard drives and introduces the basic principles of Linux filesystems. Why Data Storage on Drives is Essential: Computers need to store data on hard drives…