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Field Notes

Technet Engineering Blog

Field notes and deeper technical dives from the real infrastructure work behind Technet Engineering's case studies.

Disk Pressure Is the Boring Way Home Labs Actually Die

A field-notes deeper dive into the capacity-management discipline behind our home lab case study — why 80% disk utilization is the number that matters, and what a real outage recovery runbook looks like.

Verify Before You Call It Fixed: A WireGuard Habit That Caught a Silent Bug

Two field lessons from a real WireGuard road-warrior VPN rollout: why we diff public keys before marking a peer 'done', and why a firewall alias can silently drift from its own saved config.

Investigate Before You Fix: A Field Guide to Hardening Exposed Services

The hardening pattern behind our network security case study, expanded: why 'close the port' is the wrong first move, and how we actually decide what a finding means before acting on it.