Cristian Seres wrote:
Hi!
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.
What kind of cheap solutions would you think of? For instance, is it
possible to feed time signal from one NTP server to another via
RS232/usb? Or is there an affordable usb/rs232 reference clock which
has an IP based separate antenna unit?
With best regards,
Get a wifi access point that's supported by OpenWRT and has a USB port.
Install OpenWRT. Install gpsd and ntpd. Get a gps USB puck. Set up
access point in room with good gps reception. Use the AP as the ntpd
server. It works quite well and is quite reliable and cheap.
--
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math is Arabic, my writing Latin. And you complain that your neighbor is
Mexican?
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