Essential Network Basics for Ops: IP Addresses, Subnet Masks, and Gateways Explained
This guide walks operations engineers through core networking concepts—including IP address structure, binary‑decimal conversion, private address ranges, subnet masks, CIDR notation, gateway functions, VLAN isolation, routing tables, DNS resolution, Docker/Kubernetes networking, and firewall configuration—while providing concrete command‑line examples and step‑by‑step troubleshooting workflows.
