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Networks & Edge
Switch and firewall lifecycle, edge security, refresh cadence.
- 網 Flatten or segment an aging LAN 5 min · published 2026-09-07 Segmentation is security gospel — until you try to retrofit it onto a decade-old flat network running on gear that's one config change from a bad weekend. The honest answer to "should we segment" on aging infrastructure is: it depends, and the tradeoff is real. A field guide to deciding without dogma.
- 網 The firewall EOL trap 4 min · published 2026-08-03 A switch can run a decade past its end-of-life in quiet obscurity. A firewall cannot. It's the one box on the network where end-of-life stops being an abstraction and becomes an open door — and the failure mode is silent, which is exactly what makes it dangerous.
- 網 Why switches outlast servers (and when they don't) 5 min · published 2026-05-31 Network gear has different lifecycle physics than compute. A working framework for when a 10-year-old switch is fine and when it is a liability.