These days, home lab is a bit of a misnomer because your infrastructure could very well be spread out between devices in different locations, or even in the cloud. This provides challenges for traditional networking configurations but tools using modern protocols like WireGuard can help. One such tool is Tailscale, which sets up peer-to-peer (p2p) VPNs between your devices, so they can communicate securely, at scale, and at distance. One other software tool well worth your time is ZeroTier, which looks similar from the outside, but accomplishes the networking between your devices in a different way. It's like having a virtual network switch with no geographical restrictions, and it's perfect for home lab use.

Tailscale is still one of the easiest ways to connect multiple locations or devices together, while still being able to browse as if you're on your home lab network. But it has one big restriction that some home labbers don't like—it always needs Tailscale's servers to handle the initial handoffs between devices. After that stage, it's a pure p2p VPN, but that crucial stage is handled by servers in the control of a VC-backed company. Kinda against the reasons of self-hosting home labs in the first place. You can, however, set up your own control server using the open-source alternative, headscale, which enables you to self-host for one tailnet, which is all most home labs need.