AI & ML

Turn any PHP host into a gateway to your local network with host2gateway

Ever wanted to turn a simple PHP host into a gateway for your local network? I built host2gateway to do exactly that. ProfiDE / host2gateway Uses a PH…

Building an AI-Resistant Post-Quantum VPN in Rust 🦀 (With an Open Crypto Challenge)

Hello Dev.to! 👋 I'm the architect of an experimental post-quantum VPN protocol called QCRA (Quantum-Chess Routing Architecture). It’s written entirely…

Simulating 2G to build an offline-first sync engine in Rust for rural clinics

hey dev.to, so I am Mathéo, a 2nd year CS student at EPITECH Nancy (France). I want to share a project I have been building for the last few months: Z…

How the Web Actually Works: HTTP from the Ground Up

I've been going through Jim Kurose's networking lectures lately, and I kept finding myself pausing to re-read the same sections. Not because they were…

AWS VPC IPAM: The Most Underrated Feature for Avoiding IP Address Chaos

Most teams manage their VPC IP ranges in a spreadsheet — until two VPCs overlap, a peering connection refuses to come up, and nobody can remember who …

AI Agents Are the Best Thing to Happen to Network Administration Since SDN

AI Agents Are the Best Thing to Happen to Network Administration Since SDN A single API key, an AI agent, and a router behind a double-NAT in Southeas…

HLD Fundamentals #1: Network Protocols

Network Protocols Network protocols define how computers communicate over a network. Whether you're opening Instagram, sending a WhatsApp message, wat…

How to Find and Stop the Process Using a Port on Linux

When you start a service and it fails with address already in use , something else is already holding the port. On a Linux server you can identify tha…

How Myanmar Blocks Tailscale — and How to Beat It

A government blocks a VPN with a one-line SNI rule. The fix is a custom relay on port 443. Tailscale could make this trivial for millions — but they h…

How to Configure Azure Virtual Networks and Subnets for Virtual Machine Deployment

Introduction Virtual networks are the foundation of communication in Microsoft Azure. They enable Azure resources to securely communicate with each ot…

Installing WGDashboard, an Open-Source Web UI for WireGuard VPN, on Ubuntu 24.04

WGDashboard is an open-source web UI for managing WireGuard VPN configurations, peers, and traffic statistics. This guide installs WGDashboard using D…

Deploying Pi-hole DNS Sinkhole Service on Ubuntu 24.04

Pi-hole is a network-level ad and tracker blocking application that acts as a DNS sinkhole, returning a null address for known ad and tracking domains…

Deploying AdGuard Home Network Traffic Filtering on Ubuntu 24.04

AdGuard Home is an open-source, network-wide ad and tracker blocking DNS server with a web dashboard, parental controls, and DNS-over-HTTPS/TLS suppor…

Multi-VPS Distributed n8n Cluster on Ubuntu 24.04 with an IPIP Tunnel

When running automation tools like n8n for personal or production workflows, you quickly run into resource walls if you stick to the default configura…

What Really Happens When You Click a Link

You click a link. In under two seconds, a webpage built by someone in San Francisco loads on your phone in Delhi. No one handed it to you. Thousands o…

Why I Stopped Paying for Tunnels and Built My Own (in 500 Lines of Rust).

Why I Stopped Paying for Tunnels and Built My Own (in 500 Lines of Rust) We’ve all been there: you’re working on a project, you need to show it to a c…

Self-hosting email the hard way from your own routable IPv4 block up

The Bugs That Hide Behind "It Works": Debugging a Multithreaded C++ Proxy Server

As a student, one of the biggest lessons I've picked up is that a program which compiles and runs is not the same as a program that is correct. It rea…

Learning DevOps from First Principles: MAC Addresses vs IP Addresses — The Difference Finally Clicked

One of the first networking concepts that confused me was this: Why does a computer need both a MAC address and an IP address? At first glance, they s…

Azure MANA NIC Rollout: Could It Impact Your Aviatrix Gateways?

If you run Aviatrix on Azure, there is a slow-moving infrastructure change happening underneath your gateways right now that is worth paying attention…

Stop the Leak: How I Built a Zero-Trust Kill Switch for Windows Using Only PowerShell

The Problem If you've ever audited your Windows network traffic during a boot-up sequence, you know the truth: there's a "blind spot." Between the mom…

Learning DevOps from First Principles: Why Linux and Networking Might Be the Best Place to Start

One question has been occupying my mind recently: If someone wants to learn DevOps, where should they actually begin? The internet offers thousands of…

Kubernetes Networking Explained: Pods, Services, Ingress, and Network Policies

Kubernetes networking is one of the most misunderstood parts of running containerized workloads. A pod can reach another pod by IP — but why does that…

Making Star Stable 1 Multiplayer

Introduction For those who aren't familiar with the Star Stable titles, they are split into sections: Star Stable [1, 2, 3, 4] - Singleplayer games St…

OSI Model in the Real World: From Your Browser to the Server

The OSI Model can feel theoretical in the classroom. But it describes something that happens billions of times every second all around you. Let's trac…

Why Visual Learning Beats Static Diagrams for OSI Mastery

The human brain is not a text-processing machine. It is, above all else, a visual processor . Neuroscientists estimate that approximately 65% of the p…

Teaching Networking? The OSI Simulator Is Your Best Classroom Tool

If you're a networking instructor — at a university, technical college, boot camp, or corporate training program — you know the frustration of teachin…

Studying for CompTIA Network+ or CCNA? The OSI Simulator Is Your Secret Weapon

Networking certifications like CompTIA Network+ and Cisco's CCNA are career-defining credentials. They validate your understanding of networking funda…

How to Use the OSI Model Simulator: A Step-by-Step Tutorial

Getting started with the OSI Model Simulator takes less than 60 seconds. The interface is thoughtfully designed to be intuitive for beginners while of…

Ethernet, Wi-Fi, Fiber, Coaxial & Radio: Transmission Media Compared

The Physical Layer's choice of transmission medium profoundly affects the performance, cost, security, and reliability of a network. The OSI Model Sim…