Setting up DNS with VPN on RUT950

NETWORKING SOLUTIONS
1

Hi
After several days of trial and error I managed to get a Wireguard VPN tunnel between my RUT950 legacy and my home Fritzbox router. But there remains one problem: DNS does not resolve local names of hosts connected to the Fritzbox. Maybe it is an issue with the Fritzbox DNS rebind protection.

I tried the two following options, both with the same result. I can resolve internet names but not local names from the Fritzbox side.

  1. In the WAN advanced configuration I untagged “use remote provider’s DNS servers” (I don’t know the exact wording because my RUT device displays User interface in German despite setting language to english). And the adding the Fritzbox IP address as DNS server.

  2. Add an DHCP option 6 with the IP address of the Fritzbox. The clients now get the Fritzbox IP address as DNS server. I verified this with IPCONFIG.

On the Fritzbox side I can define hostnames for a Rebind protection exception. I tried adding the hostname of the RUT as shown under the Administration Router name field “Teltonika-RUT950.com”. Also tried adding a .wan to that, but to no avail.

What can I do? As a workaround I would also accept to manually edit a hostname list on the router. I tried to add the hosts to the DHCP static entries, but that does not work.

Best solution for me would be to have both locations (RUT and Fritzbox) in the same subnet with the same access rights. But it seems, that’s not possible. But if name resolution works at least in one direction would be ok for me.

Thanks
Thorsten

2

This topic was automatically closed after 15 days. New replies are no longer allowed.