How I Created a Secure, Bidirectional Network Without Installing Extra Hardware
For a recent project, I needed a secure way to access a development environment running on a mobile setup, while still allowing that environment to communicate back with a client system at home. The catch? I couldn’t rely on traditional port forwarding or dynamic DNS, and I didn’t want to set up or maintain a dedicated device like a Raspberry Pi, VPN server, or Pi-hole. After exploring several networking solutions, I found a surprisingly simple and elegant answer: ZeroTier. 🛠 The Problem I had two devices: One at home, behind NAT and a dynamic IP. Another on the go, where I had no control over the router or firewall. Both needed to connect to each other reliably — and in both directions. Traditional methods like reverse SSH tunnels or manually configuring a VPN were either fragile, high-maintenance, or required additional hardware acting as an always-on relay. ✅ The Solution: ZeroTier ZeroTier creates a virtual LAN over the internet. Once both devices are joined to the same virtual network, they can communicate as if they were on the same local network — regardless of where they are in the world. In less than 10 minutes: I installed the ZeroTier client on both devices. Authorized them through ZeroTier’s web dashboard. Got instantly assigned private, routable IPs. And... that was it. I could access services securely between the two devices with no further configuration. 🔄 Compared to Tailscale Tailscale is a great tool, especially for teams already using Google or Microsoft logins. However, there were a few reasons I opted for ZeroTier: Fewer dependencies: Tailscale relies on the WireGuard protocol and a coordination server model, which can introduce friction if you’re not using their full ecosystem. More flexibility: ZeroTier gives more control over network topology (bridging, routing, etc.), which was helpful for my setup. No third device needed: Tailscale often works best with an always-on relay node (like a Pi), especially for subnet routing — something I specifically wanted to avoid. Both are great choices, but ZeroTier gave me the flexibility and simplicity I needed for this case.
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- Shane