Stuart Henderson <s...@spacehopper.org> wrote:

> On 2020-05-07, Marko Cupać <marko.cu...@mimar.rs> wrote:
> > Hi,
> >
> > why not change default constraint server in ntpd.conf from current
> > https://google.com to something more neutral / reputable?
> >
> > If https://www.openbsd.org does not want to be involved, perhaps
> > https://www.ntp.org would be fine.
> 
> Neither of those are good options. One or a few servers, IPv4 only,
> only in North America, not peered with many ISPs, compared to a
> large geolocated server front-end, v4+v6, within a few network
> hops of much of the world, with people paid to keep it working,
> and ISPs will quickly notice if their connectivity is down.
> 
> The other default constraints server listed (quad9, hosted on
> the very widely peered pch.net) is good for that too.
> 
> What ntpd needs for a "constraints" server is a site that
> will a) stay online as much as possible and b) is likely
> enough to hand out something approximating the correct time,
> that's all.
> 
> I'm not a big fan of using google.com for this on my own systems so
> I often just don't use it, but I can't argue that it's a bad choice
> overall, and I don't have an idea for another site that is both
> equally good and "more neutral".

What it needs is someone who cannot afford to ever publish a
certificate for HEAD which is untrue.

Noone satisfies that condition as well as Google.

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