How to use Bind response policy zone to stop Firefox from using DNS over HTTPS
amb-sendok-1570676112.fpdmbpdjhnomfcgbojff at bradfords.org
Mon Sep 9 20:55:12 MDT 2019
Thus said Michael Torrie on Mon, 09 Sep 2019 20:45:54 -0600:
> I'm pretty sure that if Firefox is trying DoH and it fails for
> whatever reason, it will fall back to normal DNS. On Slashdot several
> folk talked about blocking the cloudfare dns servers' IP addresses.
Yes, according to their wiki, it will blacklist domains that fail to
resolve via DoH for a period of time and use normal DNS resolver.
> Currently they are getting a lot of flack over this move to enable DoH
> by default, so we'll have to see if they bow to pressure and reverse
I've already changed network.trr.mode to 5 on all of my Firefox profiles
that I can at the moment.
There's one question I have... in the network.trr.confirmationNS there
is example.com---I wonder if I need to block this as well:
Of course, these are the current defaults and I wonder if I don't alter
the defaults if Mozilla will assume that it's alright to modify the
default and thus undo any blocking I might have made.
TAI64 timestamp: 400000005d7710b5
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