I had this working in Untangle for years, then switched to OPNsense for a few weeks and got it working, now I've decided to go with Sophos but I'm stuck. (Loving Sophos XG, btw.)
I have two PiHoles running on my LAN and want to force/redirect all LAN DNS/53 traffic to the PiHoles. I've searched and then tried several settings but I'm stuck - it's not working. I've figured out how to set the DNS for the interface and set the DNS for the DHCP, but some devices ignore those settings. Therefore, I'm trying to create a NAT rule that redirects all DNS/53 LAN traffic to the PiHoles. I'm not sure if there needs to be a NAT and Firewall Rule, or if NAT alone can enforce this, and then how to actually configure those rules??
Thank you!
JS
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