Technical Articles

Practical articles, in-depth tutorials, and architectural insights on software engineering, AI, and systems.

All categories Arquitetura Automação Backend Carreira DevOps Eletrônica Engenharia Frontend Hardware IA Negócios Produtividade Redes

Redes•4 min

How to configure VLAN on switch port and isolate network

Learn step by step how to configure VLANs on managed switches to separate corporate networks from IoT devices and boost security.

RedesDevOps•5 min

How to test DNS latency on Linux using the dig command

Learn how to isolate name resolution bottlenecks and DNS server latency using detailed recursive queries with the dig command.

RedesDevOps•6 min

How to diagnose packet loss and high latency with mtr

Learn how to isolate network failures and routing bottlenecks in Linux servers using the real-time mtr diagnostic tool.

RedesDevOps•5 min

How to configure load balancing with HAProxy

Learn how to build a high-availability traffic balancer using HAProxy to distribute HTTP requests across multiple backend application servers.

RedesDevOps•4 min

How to unblock a port in the Windows firewall

Learn how to unblock ports in Windows Defender Firewall using the graphical interface and practical PowerShell commands to fix connection issues.

FrontendRedes•4 min

How to Inspect WebSocket Requests in Browser DevTools

Learn how to use the DevTools Network tab to capture, filter, and analyze real-time message frames exchanged via WebSocket.

RedesDevOps•5 min

How to configure the hosts file on Linux to redirect IPs

Learn step by step how the local name resolution file (/etc/hosts) works on Linux, mapping domain names to specific IP addresses.

FrontendRedes•5 min

How to Inspect HTTP Headers in the Browser Using DevTools

Learn step by step how to capture, analyze, and debug network requests and responses directly through the browser Network panel.

RedesDevOps•4 min

How to diagnose packet loss and jitter with mtr

Learn how to use mtr on Linux to isolate faulty network hops and production latency bottlenecks with practical examples.

RedesDevOps•5 min

How to block Layer 4 DDoS attacks with nftables

Learn how to practically implement advanced rate-limiting rules in nftables to protect your internet-facing servers against transport layer DDoS attacks.