[ntp:questions] Problem with time synchronisaton
kostecke at ntp.org
Sat Apr 12 15:06:43 UTC 2008
On 2008-04-12, David Woolley <david at djwhome.demon.co.uk> wrote:
> tony.carter at dpi.nsw.gov.au wrote:
>> I have ntpd installed (ntpq 4.2.2p1 at 1.1570-o Mon Jun 4 15:13:06 UTC
> That is not a standard version number.
Really? On my system running 4.2.5p54 built from sources downloaded from
www.ntp.org I see:
$ ntpq -c"rv 0 version"
assID=0 status=0654 leap_none, sync_ntp, 5 events, event_peer/strat_chg,
version="ntpd 4.2.5p54 at 1.1533-o Fri Jun 22 14:26:20 UTC 2007 (2)"
> Who allocated the "@1.1570-o" part of the version number?
> You may be better off getting support from them.
I believe he's in the right place.
>> (1) and running but the time on the ntp host does not appear to be
>> synching with the nominated external time references. Any assistance much
> That's because no (valid) replies have been received from any of them.
> The two common causes of this are over-aggressive restrict lines and
> I think your restrict lines may be OK,
> but I'd suggest confirming that it works without any.
> Using pool servers limits your ability to use restrict and the
> defaults must permit your client to use any times it receives.
> Another possibility is that they have restrict kod set on the servers,
> and you are using multiple clients and NAT, in a way that causes the
> rate limits to be exceeded.
If that were the case you would see .KOD. in the ntpq peers billboard.
> People often overlook the Linux iptables firewall.
Port 123/UDP must be open to receive packets from the remote time
Steve Kostecke <kostecke at ntp.org>
NTP Public Services Project - http://support.ntp.org/
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