Re: This is bad, was Re: Fedora 33 System-Wide Change proposal: systemd-resolved

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On Mon, 2020-09-28 at 16:02 +0100, Tom Hughes via devel wrote:
> On 28/09/2020 15:57, Marius Schwarz wrote:
> > Am 28.09.20 um 13:47 schrieb Zbigniew Jędrzejewski-Szmek:
> > > DNSSEC support in resolved can be enabled through resolved.conf.
> > Why isn't that the default, if this resolver can do it?
> 
> Because DNSSEC is a disaster area and if you try and use it
> on random networks you're going to get failed lookups on a
> reasonable number - it's fine if you're on a known network
> with decent upstream servers but once you start going out
> and using random WiFi hotspots and things it's a very
> different story.

Surely this is better solved by using DoH toward known good servers for
anything but the local resources ?

I mean the whole point of systemd-resolved should be to make things
better including DNSSEC ?

As it was already pointed out it is also reasonably simple to detect if
the local network have bad DNS servers ...

What am I missing ?
Simo.

-- 
Simo Sorce
RHEL Crypto Team
Red Hat, Inc



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