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.

Statistics File Issues

ntpd can generate a variety of statistics as it runs.

Over time, any of these statistics files may have undergone a change in its content or format which makes it difficult to analyze "previous" and "current" data.

Let's use this page to discuss these issues and evolve a solution.

Perhaps something like:

 #loopstats v1
 # day now offset freq*1e6 jitter stability*1e6 spoll

This way we could easily grep out the comment lines and/or use a perl program to combine data from different versions of each statistics file into the desired format.