From Pull Requests to Reproducible Interoperability: Building an Evidence-First Contributor Network
From Pull Requests to Reproducible Interoperability: Building an Evidence-First Contributor Network Open source collaboration becomes much more usef…
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IEC 61850 Security Research: From SCL and MMS to GOOSE, Sampled Values, and the Process Bus
By RUGERO Tesla ( @404Saint ). IEC 61850 is another one of those protocols that becomes more interesting the deeper you go. At first glance, it look…
An OSPF Hello has to match before it can mean anything
Originally published at https://blog.pathvector.dev/protocol-in-code-ospf-01/ — part of the free Protocol Lab series. This post is part of Protocol…
Building a C++ HTTP Server from Scratch (Part 1): Setting Up TCP Sockets
Introduction In this series I will be going through how to build an HTTP Server from scratch in C++ using POSIX APIs, and actually have it serve a w…
DNS Round-Robin: The Cheapest Load Balancer Is Three A Records and a Rotating Answer
Originally published at https://blog.pathvector.dev/protocol-lab-dnsrr-41/ — part of the free Protocol Lab series. This post is part of Protocol Lab…
QUIC-Based NAT Traversal: How PUNCH_ME_NOW Frames Are Standardizing Hole Punching
TL;DR: NAT traversal has historically relied on STUN/TURN/ICE running as an external signalling layer bolted onto whatever transport protocol you ch…
A small C++ library for sending structured commands and telemetry between devices — no schema files, just add your parameters and serialize
If you've ever tried to build a simple command/telemetry protocol between a PC and a fleet of SDR receivers, sensors, or embedded devices, you know…
cfzt: как я обернул Zero Trust Cloudflare Tunnel в одну команду и зачем туда пришлось добавить вотчдог для QUIC
В домашней инфраструктуре у меня крутится десяток сервисов: Grafana, Zabbix, n8n, Navidrome, ollama, БД, пара дашбордов и тестовых API. Ка…
Stage 1.6 — Network Devices
From Zero to Cybersecurity Professional | Complete Roadmap Series Series: Cybersecurity × OT/ICS Security — Full Roadmap Stage: 1 — Network Fundamen…
The Most Confusing Thing in VirtualBox: Networking Explained
If you've ever run this command in Kali Linux: ip a you've probably seen something like this: lo 127.0.0.1 eth0 10.0.2.15 eth1 192.168.56.10 docker0…
Create and configure network security groups
Introduction Want to ensure your web infrastructure is tightly controlled and protected against unauthorized traffic? In this hands-on lab breakdown…
From the Perspective of a 20-Year Architect: My Own System's Security
Even though I've been immersed in systems for twenty years, I never thought a security incident on my own server would make me sweat this much. I'm…