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.

ntp-4.2.8p15 was 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.

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Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.

Log Message Format

We should allow some global configuration options.

We should have a standard log message format.

For some sites, it would be useful to show:

refclock/Unit: ...

and for other sites the Unit would simply be useless extra information.

Better still would be the ability to control this on a per-refclock basis.

See New Ntp Conf Format for related discussion.