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 use in a distributed denial-of-service (DDoS) attack. Please also take this opportunity to defeat denial-of-service attacks by implementing ingress and Egress filtering through BCP38.

ntp-4.2.8p3 was released on 29 June 2015, and addresses leap-second issues and a minor security issue.

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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