Technical Articles

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

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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.

Redes•4 min

How to Measure Bandwidth and Jitter in Linux with iperf3

Learn how to diagnose speed and stability issues in networks using iperf3. Discover how to interpret throughput, TCP, and UDP in practice.

RedesDevOps•4 min

How to block malicious IP addresses with Fail2Ban

Learn the practical step-by-step process to configure Fail2Ban on Linux servers and stop brute-force attacks in an automated and efficient way.

RedesDevOps•3 min

How to block suspicious traffic and attacks with nftables

Learn how to configure nftables on Linux to block malicious traffic, mitigate brute-force attacks, and protect internet-facing servers.

RedesDevOps•4 min

How to inspect routes and ARP tables on Linux with ip route

Demystify the ARP protocol and TCP/IP network layer. Learn how to diagnose gateway problems and static routes using modern iproute2 commands.

RedesDevOps•4 min

How to test DNS latency on Linux using the dig command

Learn how to measure DNS latency and recursive server response times using the dig command on Linux, understanding name resolution and packet routing step by step.

FrontendRedes•4 min

How to Inspect HTTP Headers in the Browser Using DevTools

Learn how to inspect HTTP headers in the browser using DevTools. Understand client-server communication, caching, CORS, and payload inspection.

RedesDevOps•4 min

Slow Wi-Fi? How to measure real speed and packet loss

Learn how to use iperf3 to measure real wireless throughput, identify packet loss, and evaluate exact Wi-Fi latency using practical terminal commands.