[ntp:questions] Re: uk pool problem

Danny Mayer mayer at ntp.isc.org
Wed Aug 30 03:28:02 UTC 2006

Ronan Flood wrote:
> Heiko Gerstung <heiko.gerstung at meinberg.de> wrote:
>> I could think of some kind of misuse-protection, we discussed this
>> several times. If a client polling rate is too high, send it the wrong
>> time...
>> Probably this is just an attempt of the owner of this server to reduce
>> the load caused by mad clients. I just issued a sequence of ntpdate
>> calls and it seems that I am blocked by that server automatically after
>> a couple of requests (for a short time).
> This appears to be the same server described at
>   http://ntp.lp0.eu/
> ntp.lp0.eu is a CNAME to blackhole.arlott.org.uk.
> Quote:
> "Access
>     o This server is private use only. 
>     o All other users should use pool.ntp.org. 
>     o Anyone using ntpdate (or equivalent) or unauthorised frequent
>       polling of the time will be reported to their ISP's abuse contact. 
>  Any queries should be directed to the hostmaster (at blackhole.arlott.org)."
> Perhaps it has crept into the pool by mistake.
> I don't see why ntpdate is quite so frowned upon.

You mean issues like this don't bother you? Using ntpd instead avoids
many of this issues brought up in this discussion.


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