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

Network packet loss: how to find faulty cables and switches

Learn how to identify if your network instability is caused by physical issues, such as poor cable crimping or electromagnetic interference, using command-line tools.

Read article

Redes•4 min

How to monitor active TCP connections on Linux using the ss command

Learn how to use the ss command on Linux to diagnose network connections in real time, identify open ports, and resolve stuck sockets.

Read article

Redes•4 min

How to diagnose network packet loss using the ping command

Learn how to use the ping command to identify packet loss and latency in local networks, understanding practical ICMP concepts.

Read article

Redes•4 min

How to isolate network traffic with VLAN on managed switch

Learn step by step how to configure VLANs on a managed switch to segment your corporate network or homelab safely and efficiently.

RedesHardware•4 min

No internet? How to test onboard network card using ping command

Learn how to step-by-step diagnose physical connectivity and driver failures in integrated network controllers using the ping command.

Redes•4 min

Wi-Fi dropping? How to use ping to find packet loss

Is your wireless connection constantly fluctuating? Learn how to run continuous ping tests to measure latency, jitter, and diagnose wireless interference.

Redes•4 min

Unstable local network? How to use mtr to trace routes

Learn how to use the mtr command in real-time to isolate packet loss and latency across local network hops by combining ping and traceroute.

RedesDevOps•2 min

Pod network down? How to debug CNI in Kubernetes

Are your pods unable to communicate? Learn how to isolate network failures in Kubernetes using native tools and CNI diagnostics to restore connectivity.

RedesDevOps•6 min

How to use tcpdump to inspect network traffic

Learn the fundamentals of packet analysis on Linux using the tcpdump command, with capture filters and header inspection.

Redes•5 min

How to Inspect NAT and Firewall Rules on Linux

Demystify packet routing and network address translation on Linux. Learn to use iptables and nftables to diagnose blocked traffic.

RedesHardware•2 min

Network loop? How to find it on switches with tcpdump

Learn how to identify broadcast storms caused by physical loops using tcpdump. Practical diagnostics to stabilize your network immediately.

RedesHardware•3 min

How to Configure LACP Link Aggregation on Switches

Learn step by step how to configure LACP on managed switches to bond physical ports, ensure redundancy, and increase local network bandwidth.

Redes•4 min

How to Configure MikroTik Bridge to Isolate LAN Ports

Learn how to segment traffic in enterprise routers using advanced bridge rules and VLAN filtering on MikroTik to protect network perimeters.