[LINK] RFI: Clock Synchronisation in Hosts
Kim Holburn
kim at holburn.net
Wed Nov 12 14:13:07 AEDT 2014
I'd go with that. At least two. On my Mac, not 10.4 I added several like this in the Date & Time control. Use commas to separate:
au.pool.ntp.org, time.australia.apple.com, time.apple.com, time.asia.apple.com
You could also put:
0.au.pool.ntp.org, 1.au.pool.ntp.org, 2.au.pool.ntp.org, 3.au.pool.ntp.org, 4.au.pool.ntp.org
Kim
On 2014/Nov/12, at 1:01 PM, Avi Miller wrote:
> FYI,
>
>> On 12 Nov 2014, at 12:55 pm, gr0ve <gr0ve at exemail.com.au> wrote:
>>
>> In my home network, I tend to run my own local NTP
>> server for this function, which itself sources the time from one
>> of the available Australian NTP servers.
>
> Syncing to just one upstream NTP server is not sufficient (it's a SPOF):
>
> http://support.ntp.org/bin/view/Support/SelectingOffsiteNTPServers#Section_5.3.3.
>
> We're now configuring our servers with 5 sources (which are internal) and each of those 5 sources sync with 5 different upstream sources.
>
> Cheers,
> Avi
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--
Kim Holburn
IT Network & Security Consultant
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