DNS over GRE tunnel

[coreykeeling]

Morning,

 

Hope everyone had a good Christmas and NY.

 

 

We have recently switched internet providers on both our primary and high school sites and we have a GRE tunnel between them. We want to use this tunnel so that we can share network drives between sites and RDP. We have tested RDPing into our primary site which works but we have to use a IP address because both sites have there own Windows DNS. Can we set DNS forwarders on each send to be able to resolve each other's computer hostnames or is it more complicated then that?

 

Ideally I presume it would be better to have one set of DNS servers and point both sites to them but for now this is not a possibility.

 

 

Thanks

Corey

[FN-GM]

Assuming they are on separate domains, you can create conditional forwarders in DNS. You then specify the DNS name of the remote site and the IP address of their DNS servers.

 

You can then RDP or whatever using FQDN's.

[coreykeeling]

Assuming they are on separate domains, you can create conditional forwarders in DNS. You then specify the DNS name of the remote site and the IP address of their DNS servers.

 

You can then RDP or whatever using FQDN's.

Thanks FN-GM I thought I could use that or forwarders. I am now experiencing a issue when creating the conditional forwarders that it doesn't resolve the domain name and I get the following message "the server with this IP address is not authoritative for the required zone?"

[FN-GM]

You can't really use forwarders as you will need to do it on both sides and you will create a loop and then nothing forwarding off to the public DNS.

 

Where do you see that?

[coreykeeling]

You can't really use forwarders as you will need to do it on both sides and you will create a loop and then nothing forwarding off to the public DNS.

 

Where do you see that?

 

I see the error when creating a conditional forwarder as you suggested.

 

[FN-GM]

I assume that IP of their DNS server is correct?

 

If so I would try it anyway and check that save in AD checkbox.

 

Thanks

[coreykeeling]

I assume that IP of their DNS server is correct?

 

If so I would try it anyway and check that save in AD checkbox.

 

Thanks

Yes it is correct.

 

I have created the conditional forwarders on both sites dns servers and when I ping using a hostname it says it can't find it and when I use nslookup I get the following error like it isn't even looking at the other dns.

 

[FN-GM]

You need to ping using the FQDN.

 

eg: trp-sr-001.domain.local

[coreykeeling]

You need to ping using the FQDN.

 

eg: trp-sr-001.domain.local

 

Thank you that worked.

[FN-GM]

Thank you that worked.

 

It will be defaulting to your local domain you see. You have to tell it that its not local

 

If you want it to work in the reverse order you will need to set it up on the other domain.