Homelab · Companies · Politics
Blog
Notes on self-hosting, running companies, and the occasional take on politics — written down as I go.
July 15, 2026
Feeding a WMS heatmap into MapLibre with a local proxy
Leipzig's heat-stress map only speaks EPSG:4326, MapLibre's raster sources want Web Mercator. A 180-line localhost tile proxy bridges the gap.
Read more →July 9, 2026
How an empty firewall file bricked my whole network
A deploy pipeline run from the wrong directory truncated my OpenWrt firewall config to 0 bytes. Postmortem: symptoms, red herrings, recovery, lessons.
Read more →July 9, 2026
Why another tech blog
Why I started this site: practitioner notes from running real infrastructure and real companies, self-hosted, with no tracking and some opinions.
Read more →July 9, 2026
What I do with each company
A tour of the five ventures I build and run: IT consulting, EU-sovereign hosting, a privacy-first health app, app development, and chemistry software.
Read more →July 9, 2026
Who I am
Anton Anders is a developer and founder from the greater Leipzig area. He builds companies, runs a homelab, and writes about self-hosting and sovereignty.
Read more →December 12, 2021
Log4j exploit weekend fun
How I spent the Log4Shell weekend: auditing every service and server my company runs, patching Jitsi and Unifi, and what made the audit quick.
Read more →December 5, 2021
Enabling Valhalla routing to use pedestrian areas
Valhalla refuses to route pedestrians across OSM pedestrian areas. Why that happens in graph.lua, and a workaround that routes along the polygon edges.
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