[ntp:questions] NTP server with no network, no GPS signal
Steve Kostecke
kostecke at ntp.org
Fri Apr 29 12:32:55 UTC 2011
On 2011-04-29, Cristian Seres <cristian-2 at contrasec.fi> wrote:
> I am looking for a solution to install an NTP server in a very
> restricted network which can not be connected to other networks even
> through a firewall because of strict security policy. RS232 and usb are
> ok. Using GPS or DCF77 reference clocks would require a long antenna
> wire to get signal. Installing the antenna cable would be expensive, but
> there is good LAN cabling between a space with good GPS signal and the
> room with high security.
You could use:
IRIG Audio Decoder - http://doc.ntp.org/4.2.6p3/drivers/driver6.html
Search http://www.google.com/search?q=IRIG+ntp+server for IRIG time
source vendors.
PPS Clock Discipline - http://doc.ntp.org/4.2.6p3/drivers/driver22.html
Dumbclock - http://doc.ntp.org/4.2.6p3/drivers/driver33.html
--
Steve Kostecke <kostecke at ntp.org>
NTP Public Services Project - http://support.ntp.org/
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