LPLaxmi Patilinlaxmipatil-devops.hashnode.dev·18h ago · 3 min readDay 08 of My 90-Day DevOps Journey: Linux System-Level Commands & User Management on AWS EC2Today, I focused on strengthening my Linux fundamentals by learning system-level commands and user management. Since Linux is the backbone of DevOps, understanding these concepts is essential before m00
HHugoinhugovalters.hashnode.dev·18h ago · 4 min readDeploying Encrypted DNS Internally: DoH and DoT GuideI was on-call when it happened. 3 AM on a Tuesday, and every single production server in our us-east-1 region started resolving api.internal.example.com to a server in Belarus. Our recursive DNS resol00
HHugoinhugovalters.hashnode.dev·18h ago · 3 min readNetwork Segmentation: VLANs and Firewall Rules for ProductionIntroduction: Why Your Flat Network is a Liability I once walked into a post-mortem where a single compromised WordPress plugin led to an attacker pivoting from a public web server to a PCI-compliant 00
HHugoinhugovalters.hashnode.dev·18h ago · 3 min readpfSense vs OPNsense: A Pragmatic Comparison for Self-HostersI’ve been running firewalls since the days of m0n0wall on CF cards, and I still remember the sinking feeling at 2 AM when a bad pfSense config push locked me out of a remote office. The Soekris box wa00
HHugoinhugovalters.hashnode.dev·19h ago · 3 min readSSH Tunneling: The Swiss Army Knife of Networking You're Not UsingI recently watched a DevOps team spend three days arguing over the routing tables of a new WireGuard Site-to-Site tunnel. They just wanted to give a single developer access to a staging Prometheus das00
HHugoinhugovalters.hashnode.dev·19h ago · 4 min readProxy vs VPN: Stop Confusing Privacy with SecurityI recently had a conversation with a developer who was convinced their home network was “fully secured” because they had a “VPN” extension active in Chrome. They were browsing a sensitive site in one 00
LPLaxmi Patilinlaxmipatil-devops.hashnode.dev·21h ago · 3 min read🚀 My First 7 Days of DevOps Journey | From Computer Fundamentals to Linux Process Management.🚀My First 7 Days of DevOps Journey Hello everyone! 👋 I have started my #90DaysOfDevOps challenge to build strong DevOps skills. During the first seven days, I focused on understanding the fundamenta01L
HBHardik Bablainhardikbabla.hashnode.dev·1d ago · 4 min readWhy Version Control Exists: The Pendrive ProblemHave you ever worked on a group project or built a software application, only to look at your project folder and see something like this? 📁 Chai-Project 📄 index.html 📄 index_final.html 📄 00
HBHardik Bablainhardikbabla.hashnode.dev·1d ago · 4 min readGit for Beginners: Basics and Essential CommandsIf you’ve ever accidentally deleted a working piece of code or wondered how dozens of developers build massive platforms like Google, Netflix, or Spotify together without breaking things, the answer i00
HBHardik Bablainhardikbabla.hashnode.dev·1d ago · 3 min readInside Git: How It Works and the Role of the .git FolderMost developers use Git daily by memorizing basic commands: git add, git commit, git push. But have you ever wondered what Git is actually doing under the hood? Why is Git so fast? And what is that hi00
