tis 2016-09-13 klockan 10:43 -0700 skrev Chuck Guzis: > > Heh, the first message that I got after I changed the PRAM battery and > booted MacOS was that the system time didn't match the NTP time within > reasonable limits. But there the oddity hit--if I wanted to get rid of > the message, I had to open the Control Panel and manually set the time > to something close to NTP--Mac OS did not offer to do it for me. >
Which is how it is done in Linux today - if the system clock is to much off ntpd won't touch it. What would happen if the selected ntp server which ntpd wants is cracked and intentionally serving false time ? For ntpd it is a security feature that it won't change a system time which is badly out of sync. ntp is intentionally designed so that it will only change system time gradually.
