On 2011-04-29, Cristian Seres <[email protected]> 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?
If they do not allow a lan connection, they are going to allow you connect up arbitrary usb/serial stuff? Only if they are totally idiotic. Note that you can use a lan cable to feed the signal from the GPS to the computer ( of course it is not used for LAN but is simply a wire along which the GPS signals travel). Set up a small cheap old computer be the server placed up where gps signals are easy, but then that would probably be against policy anyway, as I am sure would a "ip based antenna unit" ( and no an antenna could not be ip based. The gps time source could be.) > > With best regards, > _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
