Finally got the #DNS locked down at home. I had mis-configured #pfsense to do #DNSSEC verification itself, which disables DNS over #TLS (it would be nice if that was reflected in the UI and not just the documentation). Now the resolver that nearly everything uses works over #DoH (DNS over #HTTPS), and dig
reports that my upstream resolver is doing DNSSEC verification for me (it reports ad
as an answer flag).
Was finally able to confirm with #CloudFlare’s help page and by checking the firewall state for TCP connections open to port 853.
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