[ntp:questions] ntpdc and collectd queries timeout

David Lord snews at lordynet.org
Fri Jan 24 14:46:16 UTC 2014

Steve Kostecke wrote:
> On 2014-01-24, David Lord <snews at lordynet.org> wrote:
>> On NetBSD-6 i386 ntp-dev-4.2.7p410
>> $ ntpdc -c kern
>> localhost: timed out, nothing received
>> ***Request timed out
>> Perhaps that is intended behavior for 2014 given recent
>> DDOS attacks?
> According to http://archive.ntp.org/ntp4/ChangeLog-dev
> mode 7 requests were disabled more than 2 years ago:
> (4.2.7p230) 2011/11/01 Released by Harlan Stenn <stenn at ntp.org>
> * Disable mode 7 (ntpdc) query processing in ntpd by default.  ntpq is
>   believed to provide all functionality ntpdc did, and uses a less-
>   fragile protocol that's safer and easier to maintain.  If you do find
>   some management via ntpdc is needed, you can use "enable mode7" in the
>   ntpd configuration.

Before joining the pool in 2009 I'd changed most of my  monitoring
scripts to use ntpq rather than ntpdc.

$ ntpq -c kerninfo me6000e
associd=0 status=011d leap_none, sync_pps, 1 event, kern,
pll offset:     -0.000148
pll frequency:


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