How To Fix Docker and UFW Security Flaws
Nov 7, 2025 · 6 min read · Hello, I'm Ganesh. I'm working on FreeDevTools online, currently building a single platform for all development tools, cheat codes, and TL; DRs — a free, open-source hub where developers can quickly find and use tools without the hassle of searching ...
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Introducción a la Seguridad y el Firewall: El Guardián de tu Sistema Linux 🔒
Oct 22, 2025 · 6 min read · Si estás preparándote para certificaciones de Linux como LPIC-1, LFCS o RHCSA, la seguridad de la red es un tema clave. El pilar fundamental de esta seguridad a nivel de sistema es el firewall (cortafuegos). En este post, desglosaremos qué es, cómo f...
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Tutoriel : Monter un Serveur Web sous Ubuntu avec Apache
Aug 20, 2025 · 1 min read · Prérequis Ubuntu Server installé (peut importe le support) Un utilisateur avec les droits sudo Une connexion au réseau (local ou Internet) Installation d’Apache2 sudo apt update && sudo apt upgrade -y sudo apt install apache2 -y Vérificati...
Join discussionUnderstanding Apache Logs, UFW, and Fail2Ban in Ubuntu
Aug 20, 2025 · 4 min read · Today I took a big step in diving into how Linux systems manage and store logs, and how those logs can tell us a story about what’s happening on a server. At first, logs felt like just endless lines of confusing text, but once you break them down, th...
Join discussion🚀 My DevOps Journey — Week 5: Scripting, Projects & Deepening Linux Mastery
Jul 4, 2025 · 6 min read · 🚀 My DevOps Journey — Week 5: Scripting, Projects & Deepening Linux Mastery 🗓️ Day 1: Shell Scripting for Beginners — Finished in a Day! Week 5 kicked off with a swift start: I completed the entire Shell Scripting for Beginners course by KodeKloud...
Join discussion🔒 How to Secure Jenkins Access on Linux with UFW (Allow Only Office IP)
Jul 1, 2025 · 2 min read · Author: Vikas RajpurohitPurpose: Secure Jenkins (port 8080) by allowing access only from office Wi-Fi (static IP: xx.xx.xxx.xx) and denying all other external access. ✅ Objective Jenkins is running on port 8080. Office public IP is xx.xx.xxx.xx (s...
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🚀 My DevOps Journey — Week 4: From Kernel Tuning to Network and Storage Mastery
Jun 27, 2025 · 10 min read · 📅 Day 1: Kernel Tweaks and SELinux Madness Begins Week 4 began with the kind of deep, under-the-hood Linux stuff that makes you feel like you're really learning systems. 🧠 I started with tweaking kernel runtime parameters using sysctl. It amazed me...
Join discussionAutomated Firewall Management using Docker and Cron
Mar 18, 2025 · 6 min read · Simulating automated firewall configuration using Docker, cron jobs, and UFW to ensure consistent security policies across multiple server roles Introduction Managing firewall rules across multiple servers can be tedious, especially in dynamic envir...
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How to create your own email server using Main-in-a-Box
Feb 20, 2025 · 5 min read · Introduction Hosting your email server is the first step to secure your privacy It saves you money if you own multiple domains What You'll Need [ ] Brand new VPS or any Linux Server (My recommended VPS provider is Linode) [ ] Ubuntu 22.04 LTS i...
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