NTP users are strongly urged to take immediate action to ensure that their NTP daemons are not susceptible to being used in distributed denial-of-service (DDoS) attacks. Please also take this opportunity to defeat denial-of-service attacks by implementing Ingress and Egress filtering through BCP38.See ConfiguringPPSWithUnsynchronisedRubidiumSourceDev for discussion of this topic.
ntp-4.2.8p15was released on 23 June 2020. It addresses 1 medium-severity security issue in ntpd, and provides 13 non-security bugfixes over 4.2.8p13.
Please see the NTP Security Notice for vulnerability and mitigation details.Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.
option PPS_SYNCAs the PPS signal is received on the serial port, the following link was made:
ln -s /dev/cuaa0 /dev/ppsThe NTP code was ported using -- MauroFiacco - 31 Oct 2005