On Mon, 21 Mar 2005 15:24:59 -0800, Ian Burrell <ianburrell(a)gmail.com> wrote:
Also, any one organization would have a hard time sending time to
change your clock. ntpd has some sophisticated ways to find bad
clocks and ignore them. This is a good reason to stick with ntpd
instead of OpenNTPD. NTP isn't authenticated so there are attacks,
like blocking all other sources and sending bad packets. But that is
much likely to come from hackers, not the Naval Observatory.
If you are concerned about security, buy your own GPS receiver. If
you are really paranoid, buy your own atomic clock.
Minor correction: NTP can be authenticated just fine, but you need to
establish a relationship with the server operator to be set up...
Usually a few emails are all thats required... and there are more than
a few that are willing.