r1 - 2009-09-16 - 14:02:40 - RalfHauserYou are here: NTP >  Support Web > FrequentlyAskedQuestions
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-4.2.8p9 was released on 21 November 2016. It addresses 1 high- (Windows only), 2 medum-, 2 medum-/low-, and 5 low-severity security issues, 28 bugfixes, and contains other improvements over 4.2.8p8.

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.
REFACTOR See FrequentlyAskedQuestionsDev for discussion of this topic.

NTP Security: MAC (RFC 1305-Appendix C)

How to find out which servers provide such authentication?

-- RalfHauser - 16 Sep 2009

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