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r1 - 2006-04-16 - 19:09:30 - HarlanStennYou are here: NTP >  Support Web > DaylightSavingTime
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-4.2.8p13 was released on 07 March 2019. It addresses 1 medium-severity security issue in ntpd, and provides 17 non-security bugfixes and 1 other improvements over 4.2.8p12.

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.
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9.3. Daylight Savings Time Issues

NTP operates on UTC, not local time.

If ntpd has problems after a Daylight Savings Time change, the most likely cause is that there is an application in your system that is trying to "help" you. To solve this problem, find that application and disable it.

(Please add any information you may have about any of these systems here.)

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