[ntp:questions] Re: UK pool server denying access
ronan at noc.ulcc.ac.uk
Tue Oct 4 14:53:19 UTC 2005
"David J Taylor" <david-taylor at blueyonder.co.not-this-bit.nor-this-part.uk.invalid> wrote:
> Thanks, Ronan. I can ask it a question with ntpq, but my PC which was
> rebooted at 07:00 UTC this morning shows:
> +81-5-136-18.dsl 188.8.131.52 3 u 473 512 377 34.335 -6.285
> -spork.qfe3.net 184.108.40.206 2 u 223 512 377 23.466 -1.000
> gw.roaima.co.uk .DENY. 16 u 6h 1024 0 0.000 0.000
> (sorry for any wrap).
> So whilst the PC can see other external servers correctly, there is some
> problem communicating NTP with gw.roaima.co.uk.
It's fed you a kod packet by the look of it:
ntpdc -n -c reslist 220.127.116.11
address mask count flags
0.0.0.0 0.0.0.0 20028690 nomodify, nopeer, notrap, limited, kod
I'm not familiar with the limiting feature, but if I read the code aright
and if your NNTP-posting-host header is to be believed, you're in 82.x.x.x
and this server (ntpd 4.1.2) will only allow 3 active IPs in that "class A"
per hour. That might not be a sensible config for a public server ...
Ronan Flood <R.Flood at noc.ulcc.ac.uk>
working for but not speaking for
Network Services, University of London Computer Centre
(which means: don't bother ULCC if I've said something you don't like)
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