Posts on Technet Engineering Blog

Disk Pressure Is the Boring Way Home Labs Actually Die

Wed, 16 Sep 2026 00:00:00 +0000

Our home lab case study mentions, almost in passing, that the lab runs a fixed policy: keep every volume under 80% disk utilization. That line does a lot of work, and it’s worth unpacking, because “disk fills up” is a genuinely unglamorous failure mode compared to the things people usually worry about — a misconfigured firewall rule, a leaked credential, an unpatched CVE. But in practice, disk pressure is the failure that actually takes a home lab down, and it does it quietly, at the worst possible time.

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

Sun, 13 Sep 2026 00:00:00 +0000

Our Open-Source Enterprise Networking case study covers replacing a legacy commercial VPN concentrator with a WireGuard road-warrior mesh for a distributed workforce with no central office to fall back on. The architecture is the headline, but two small operational habits that came out of that rollout are worth a post of their own, because both are the kind of lesson that only shows up after something has already gone quietly wrong.

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

Thu, 10 Sep 2026 00:00:00 +0000

Our network security case study states the principle in one line: don’t patch an exposure until you know exactly who’s been using it and how. That’s easy to agree with in the abstract and easy to skip under pressure, because a security finding creates an instinct to close it immediately — and that instinct is usually wrong. Here’s the actual pattern, with more of the reasoning behind each step than the case study page has room for.