Tomorrow I’m starting the build guide for something I’m calling ZeroSentinel.

What ZeroSentinel does:

- Turns a $15 Raspberry Pi Zero into a fully autonomous privacy node

- Builds a locked, authenticated WireGuard tunnel home from anywhere

- Runs your DNS through your own Unbound resolver with DNSSEC enforcement

- Blocks ISP meddling, hotel rewrites, captive portal tricks, and upstream manipulation

- Monitors its own health every few minutes

- Sends you an encrypted Nostr DM when anything breaks

- Enforces no-fallback DNS and drops all traffic that isn’t in the tunnel

- Works behind travel routers, double NAT, carrier-grade NAT, and hostile networks

- Makes your phone’s “VPN” actually mean something

Your own infrastructure. Quiet. Cheap. No subscriptions. No external services.