Tag
infrastructure
Engineering Field Notes
NAT: Addresses, Ports, and Connection State
Trace packet translation and return-path state, calculate hot-destination port capacity, and design NAT egress around failure boundaries, observability, and explicit access policy.
Engineering Field Notes
Subnets: Address Planning and Packet Paths
Learn how subnet masks affect packet paths and how cloud and Kubernetes allocators turn address planning into a capacity problem.
Engineering Field Notes
IPv4 and IPv6: Packets, Paths, and Production Migration
Compare packet behavior, trace dual-stack connection choices, and plan IPv6 migration around translation, security, and failure recovery.