How to set up WireGuard with the FritzBox under Linux.
My new Linux laptop must of course also have the option of accessing the home network on the move using VPN. So in addition to Tailscale, Wireguard is now to be set up.
Creating a WireGuard connection in Fritz!Box
First we create the connection in the Fritzbox. We can do this under Shares – VPN (WireGuard).
We connect a new single unit, assign a name and confirm the new connection. At the end we are given the option to download the configuration file. We do this, of course.
Setting up in Linux
Now let’s move on to Linux. First we install WireGuard:
sudo apt install wireguard resolvconf
Make a wireguard connection
We can copy the configuration file to the “/etc/wireguard/” folder, but any other location will do. We establish the connection with the following command.
sudo wg-quick up /etc/wireguard/wg0-client-01.conf
Here I had another specific error message:
wg-quick: The config file must be a valid interface name, followed by .conf
The message is a bit misleading. My problem was that the file name, without .conf, was longer than 16 characters. After I changed this, the connection was established.
Check the status of the connection
The following command can be used to check the connection status.
sudo wg show
Disconnect
To disconnect, we use the following command:
wg-quick down /etc/wireguard/wg0-client-01.conf
Graphical user interface
If you don’t want to fiddle around on the command line, you can check out the “Wireguird” software. The .deb file is available here for download.
Here we can import the configuration file and then connect at the click of a button. In principle, just like under Windows.
Conclusion
Easier than expected! Works!
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