TLDR: VPN-newbie wants to learn how to set up and use VPN.
What I have:
Currently, many of my selfhosted services are publicly available via my domain name. I am aware that it is safer to keep things closed, and use VPN to access -- but I don't know how that works.
domain name mapped via Cloudflare > static WAN IP > ISP modem > Ubiquity USG3 gateway > Linux server and Raspberry Pi.
80,443 fowarded to Nginx Proxy Manager; everything else closed.
Linux server running Docker and several containers: NPM, Portainer, Paperless, Gitea, Mattermost, Immich, etc.
Raspberry Pi running Pi-hole as DNS server for LAN clients.
Synology NAS as network storage.
What I want:
access services from WAN via Android phone.
access services from WAN via laptop.
maybe still keep some things public?
noob-friendly solution: needs to be easy to "grok" and easy to maintain when services change.
PiVPN is elegant. Easy install, and I am impressed with the ascii QR code it generates.
But I could not make it work. I am guessing that my Android setup is faulty, orrrr maybe something with the Pi? This is incredibly difficult to troubleshoot.
Don't bother with VPN just use Tailscale, and install the client on your other devices (they have clients for every OS).
This creates an encrypted virtual network between your devices. It can even enable access to hardware, like printers (or anything with an IP address) by enabling Subnet Routing.
To provide access to specific resources for other people, you can use the Funnel feature, which provides an entrance into your Tailscale Network for the specified resources, fully encrypted, from anywhere. No Tailscale client required.
And if you have friends who use Tailscale, using the Serve option, you can invite them to connect to your Tailscale network (again, for specified resources) from their Tailscale network.
I second this. Wireguard, openvpn, various docker containers offering these, I've been through with them.
The regular openvpn or wireguard tools are good if you only need a dumb von, but if you want some kind of special routing or overlay network, tailscale has just been so easy.
I selfhost it completely too, using a headscale control server.
Not expert, but basically you should port forward wireguard port 51820 to your server, install wireguard server, create client(s) and load QR code (or config) on android/laptop and you are set. Pi hole DNS and everything else should work just like when you are on home wifi.
You can leave your CF for public access, but do you really need PF 80 and 443 if you are using CF tunnels? (I thought you dont, but I never used CF. Feels like its more safe to hve CF tunnels if you dont need to PF, but you have a middle man you have to trust)
You would want to setup a VPN server on your linux server and vpn clients on android and laptop. I'm not knowledgeable enough to help, but you can look into wireguard
I wanted to do something similar for a long time but somehow all my atempts failed. I tried the build in into a Fritzbox but my laptop never could connect. Later I tried the wireguard addon in homeassistant but same there.