Layer by layer from physical to application — where each protocol lives, how encapsulation actually works, and how to use the model to troubleshoot real connectivity problems rather than just pass an exam.
Networking
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CCNA: The OSI and TCP/IP Models in Practice -
RDMA and InfiniBand From the Ground Up: Why It's Fast and How to Diagnose It -
Proxmox SDN: Software Defined Networking A deep dive into Proxmox VE's Software Defined Networking: zones, VNets, VXLANs, EVPN with BGP peering, multi-tenant overlay networks, and building isolated network segments across a Proxmox cluster.
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Gateway API: The Future of Kubernetes Ingress The Kubernetes Gateway API replaces Ingress with a role-oriented, expressive API for HTTP routing, traffic splitting, header manipulation, and TCP/gRPC routing. Here's everything you need to migrate.
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Traefik: The Complete Guide to the Cloud-Native Reverse Proxy A comprehensive deep-dive into Traefik — the modern cloud-native reverse proxy and load balancer. Covers core architecture, Docker auto-discovery with labels, automatic HTTPS via Let's Encrypt, the full middleware ecosystem, routing rules, ForwardAuth and SSO, observability, HTTP/3, and the tips and tricks that make it the go-to proxy for home labs and production Kubernetes clusters alike.