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Lettuceeatlettuce@lemmy.ml 1 day agoNo, Tailscale is an overlay network. In it’s simplest form, it can act as a VPN. But it does much more than that.
Tailscale installs a virtual network device and allocates IP addresses to any device you install it on and sign in with your tailnet. Think of it as a virtual meshed LAN that runs on top of your physical network.
Tailscale becomes your control plane and provides advanced access control options for all your users and devices.
Anon518@sh.itjust.works 17 hours ago
So it’s only a VPN if you purchase the Mullvad addon?
And without the Mullvad option, it’s not really a VPN, but rather a way to get a different IP?
Lettuceeatlettuce@lemmy.ml 16 hours ago
The Mullvad integration allows you to use Mullvad as your VPN for internet browsing while still being on your tailnet.
So normally, running two different VPN services can cause a bunch of problems, if it even works at all. Tailscale’s Mullvad integration fixes that.
Tailscale by itself is an overlay network. It’s literally a second network that your computer is connected to, but instead of it being a physical network with wires, switches, and routers, it’s a virtual network, a network that runs as software.
So imagine your computer right now at home. You plug into your router, and you have a local IP address, something like 192.168.1.20 right? If you run ipconfig on Windows or ip a on Linux, you’ll see your network adaptors listed with what their current IP address is. So if you’re running Windows, you’ll see your physical network adaptor listed with the IP address of 192.168.1.20
When you install Tailscale on that computer and log into your account, then run that command again, you’ll see a new network device listed, and it will have a totally different IP address, like 100.89.113.14
That is your Tailnet IP address, it works just like your “normal” IP address, but instead of it being a physical Ethernet adaptor on your motherboard and plugged into your home router, it is a virtual adaptor (software) running on your computer, connected to the Tailscale network, which has servers all around the world.
When you install Tailscale on a new device, say an old computer that you are using as a Minecraft server. That computer will get a new IP address on your tailnet, say 100.94.65.132
Because both of those machines were added by you to your own Tailnet, they can see and talk to each other by default. Meaning you could run a ping command from your home computer to your Minecraft server’s Tailscale IP, and it will respond.
Because this runs on the internet through Tailscale’s servers, you can do this from anywhere. That’s the “VPN” type functionality you are talking about. No matter where your home computer is, you can still access your Minecraft server because it is on your Tailnet, just as if it were still plugged into your router right next to you.
This is how I access my entire home lab from anywhere in the world. For example, I have a Jellyfin media server (like Plex) that I have a bunch of movies, TV shows, anime on. It’s running Tailscale and is on my Tailnet. I have Tailscale installed on my Android smartphone too.
So if I am staying at a hotel in another state, or visiting my family on the other side of the country, and I want to watch a movie or show that I have on my server all the way back home. I just run the Tailscale app on my phone, then open the Jellyfin app and I see all my home media right there on my phone and can watch it flawlessly. Even though I am at my parent’s house, on a totally different internet connection, 500 miles away from my home.