On Sat, Jul 23, 2011 at 10:40 AM, Bob Camp <[email protected]> wrote: > There's also the basic "do I trust the server" issue. You can indeed trust > WWV as transmitted.
NTP's clock selection algorithm is pretty good. If you choose a diverse set of servers then NTP will only use the subset of them that are self consistent. "Pool" servers are assigned randomly so even if there were many bad servers in the world the chance of randomly picking five that were are "bad" in the exact same way is about zero. Typically when a server has a problem it does not match another randomly selected ntp server. So I think you can trust the consensus time from a set of five randomly selected pool servers. It would be far easier to spoof WWV, just set up a transmitter. -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
