Re: ntpq-like queries using chronyc

the server I'm trying to communicate to is on a local net.

> No, they have different protocols for monitoring.
> Google doesn't seem to be running ntpd or chronyd. From some bugs that
> can be observed, it looks more like openntpd, which doesn't support
> remote monitoring.
> If it's a public ntpd server, it's unlikely to have monitoring access
> open to Internet. The protocol allows traffic amplification, which
> would be exploited in DDoS attacks.
hmm.. very interesting, thank you!

I've been asked questions about ntpq/chronyc compatibility and I found no
discussions about this.
The explanation about different monitoring protocols implemented by
chronyd/ntpd is really concise and self explanatory, do you think that
adding a reference to the faq could give any value?

On Thu, Jun 9, 2022 at 3:51 PM Miroslav Lichvar <[email protected]> wrote:

> On Thu, Jun 09, 2022 at 03:46:32PM +0100, andrei tudor corduneanu wrote:
> > So it depends much on the implementation.. chronyd cannot communicate
> with
> > ntpd-like servers.
> > can ntpd communicate with chronyd servers?
>
> No, they have different protocols for monitoring.
>
> > The original result I found was referring to google, I'm trying to access
> > an ntpd-like server, that does support monitoring.
>
> If it's a public ntpd server, it's unlikely to have monitoring access
> open to Internet. The protocol allows traffic amplification, which
> would be exploited in DDoS attacks.
>
> --
> Miroslav Lichvar
>
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