DNS forwarder between VLANs

Phatsta · Mar 13, 2019, 1:11 PM

A customer has several VLANs, lets call them;
company.lan (VLAN1)
staff.local (VLAN100)
equipment.local (VLAN200)

We're using PFsense and DNS forwarder which is working great within each respective VLAN. However, I'd like to resolve DHCP addresses between the VLANs too. For example, I have several switches on VLAN1 (for example 'sw01.company.lan') that I'd like to access from VLAN100 by using name 'sw01'. This does not work today, I have to use name and domain part, as such; 'sw01.company.lan'.

Is there a way to do this without naming the networks the same?

jimp · Mar 13, 2019, 2:08 PM

You can setup search domains on the clients to try the other domains. That's all up to the client, though. You can add search domains in the DHCP server settings but not all clients respect that. For example, Windows clients won't honor the search domain list from DHCP.

Phatsta · Mar 13, 2019, 2:19 PM

@jimp said in DNS forwarder between VLANs:

You can setup search domains on the clients to try the other domains. That's all up to the client, though. You can add search domains in the DHCP server settings but not all clients respect that. For example, Windows clients won't honor the search domain list from DHCP.

Ah, nice. Didn't think of that. I think there's a way to get Win clients to listen to search domains through the domain controller, I have a faint memory of doing that in the past. Cheers mate!