Observed arrival · 2026-10-23

Ragnar OS turns a Raspberry Pi into a network watcher

ragnar.life Visit website

Editorial interest 77/100 Selection signal · not a rating of the site

It offers flashable Raspberry Pi images for passive network monitoring and, in a separate edition, authorized wireless auditing.

Landing page captured for the 2026-10-23 issue.

For: Raspberry Pi users building network monitoring setups
Worth noticing: The Ulfberht image uses a Kali Linux arm64 base and is explicitly limited to authorized security testing.

Field notes

The standard image is listed at 1.93 GiB on a Raspberry Pi OS Lite base; Ulfberht is 4.46 GiB on Kali Linux arm64. Both listings include SHA-256 hashes, and the setup sequence tells users to check the image before writing it to an SD card. The page says first boot raises a Wi-Fi access point for onboarding, then points users to a dashboard at the shown IP.

Observed signals

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Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

◎NicheUnusually specific use

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