WireGuard Config RUTC50 - FritzBox

[omc69]

Hi,

I’ve come across several WireGuard configs for connecting a RUTC50 to a FritzBox, but none of them worked reliably — most were either broken or outdated.

Has anyone got a working setup they’d be willing to share? A step-by-step guide or a current config snippet would be hugely appreciated.

Thanks in advance!
Christian

[Justinas]

Greetings,

Apologies for the delayed response.

We don’t currently have a specific configuration example for setting up WireGuard with a FritzBox. However, the process on the RUTC50 side should not differ. Have you looked at this configuration example? WireGuard Configuration Example - Teltonika Networks Wiki

Could you also clarify which device is acting as the server (the one with the public IP)?

Please have a look at this topic as well as it walks through the full WireGuard configuration between a Teltonika router and a FritzBox:

Issues with Wireguard tunnel between RUT200 and FritzBox 7530

It works!!! Thanks alot. So what I did is put the public key from the fritzbox web ui and the private key from the config file under [Interface] and entered it in the general settings tab. So there were basically three issues: The RUT200 resolved the endpoint address via IPv4, but the fritzbox is reachable via IPv4 only. I figured this out by a IPv6 udp port scan with a online tool I gave the fritzbox and the RUT the same IP address for the tunnel. They need different IP adresses The public …

If you’re still unable to get it working, please share screenshots of your configuration (excluding any sensitive information).

Best Regards,
Justinas