Most of what runs on your servers was never meant to be public: databases, dashboards, admin panels, internal APIs. Tailscale connects your machines into one private, encrypted network so they can talk to each other (and to you) while the public internet sees nothing. Here's what it is and how to wire up applications across multiple VPSs with zero open ports.

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Milan Jovanović

Tailscale lets you connect your servers, PCs, and phones into a private mesh network (tailnet) built on WireGuard, so internal services like databases, dashboards, and admin panels are never exposed to the public internet. The guide walks through installing Tailscale on two VPS machines, binding Docker services (Postgres, Grafana, a .NET API) to tailnet IPs instead of 0.0.0.0, closing all public firewall ports including SSH, and reaching everything from your local machine by tailnet hostname. The result is zero open ports, no TLS certificates needed for internal traffic, and no reverse proxies for private services.

Build Your Own VPN With Tailscale