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Re:HP printers try to send data back to HP about your device... by unionpivo on Monday September 16, 2019 @05:25AM (#20982344)
jup, I am concerned as well.

cloudflare DOH fortunately uses it own domain for dns, so you can block it at firewall level.

Google could be evil and make resolver "google.com", so you would have to block whole google.

I was talking to a few people, of creating a list of all public doh servers, so we could all use it on our firewalls to block them.

Re:HP printers try to send data back to HP about your device... by JohnFen on Monday September 16, 2019 @01:39PM (#20986602)
That doesn't help if ad companies and other attackers set up their own DoH resolvers.