Marcio Cunha

Technical Articles

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

All categoriesArquiteturaAutomaçãoBackendCarreiraDevOpsEletrônicaEngenhariaFrontendHardwareIANegóciosProdutividadeRedes
RedesDevOps•4 min

Layer 4 Denial of Service Attack Mitigation with XDP and eBPF in the Linux Kernel

Learn how to block denial of service attacks before they exhaust server resources using the high performance of XDP and eBPF directly inside the Linux operating system kernel.

DevOpsRedes•4 min

Workload Isolation in Multi-Tenant Kubernetes Environments with Network Policies and Gatekeeper

Learn how to secure shared Kubernetes clusters using Network Policies and OPA Gatekeeper to ensure robust isolation between different teams or clients.

AutomaçãoRedes•3 min

Smart Home Automation Integration with MQTT and Node-RED for Local Resilience

Learn how to build a fully cloud-independent smart home infrastructure using lightweight messaging protocols and visual automation workflows.

HardwareRedes•4 min

Thermal Management and Power Monitoring in Homelab Servers with IPMI and SNMP

Learn how to control temperature and electrical consumption in your homelab using IPMI and SNMP to prevent catastrophic failures and lower electricity bills.

AutomaçãoRedes•2 min

BACnet and LonWorks Integration in Building Management Systems

Learn how to bridge BACnet/IP and LonWorks protocols in Building Management Systems. This guide covers network architecture, data point mapping, and operational strategies for hybrid automation environments.

RedesDevOps•2 min

Network segmentation with VXLAN and BGP EVPN for high availability

Explore how to implement modern network segmentation using VXLAN and BGP EVPN to ensure scalability and resilience in data centers. This technical overview covers the integration of virtual tunnels and routing control protocols.

AutomaçãoRedes•3 min

Integrating Modbus/TCP with MQTT systems for industrial monitoring

Learn how to connect legacy Modbus/TCP equipment to modern MQTT-based infrastructures to enable real-time industrial data collection and analysis.

RedesDevOps•2 min

Mesh Network Architecture with WireGuard and Tailscale

Learn how to connect cloud, office, and homelab environments into a secure, unified network using WireGuard protocol and Tailscale orchestration. Understand how overlay networks solve modern connectivity challenges.

RedesDevOps•2 min

Network configuration management in hybrid clouds using L2 overlays

Explore how Layer 2 overlays allow on-premises servers and cloud instances to communicate as if they were in the same rack, simplifying IP address preservation and migration.

ArquiteturaRedes•2 min

Service Mesh for Legacy Systems: Integrating Non-HTTP and TCP Protocols

Learn how to implement Service Mesh in infrastructures relying on legacy or non-HTTP protocols, overcoming connectivity and observability constraints.