r4 - 2008-02-22 - 16:47:29 - SteveKosteckeYou are here: NTP >  Support Web > OtherImplementations > OpenNTPD
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.

Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.
REFACTOR See OpenNTPDDev for discussion of this topic.

13.4. OpenNTPD

OpenNTPD is an independent partial re-implementation of NTP. It aims to be a simple, reliable, and highly secure implementation.

Related Topics: the OpenNTPD project site


  • OpenNTPD does not have micro-second accuracy as a design goal
  • Unicast only; Multicast/Manycast/Broadcast modes not supported
  • No suport for NTP Authentication
  • No support for Reference Clocks
Edit | WYSIWYG | Attach | Printable | Raw View | Backlinks: Web, All Webs | History: r4 < r3 < r2 < r1 | More topic actions
SSL security by CAcert
Get the CAcert Root Certificate
This site is powered by the TWiki collaboration platform
IPv6 Ready
Copyright & 1999-2020 by the contributing authors. All material on this collaboration platform is the property of the contributing authors. Ideas, requests, problems regarding the site? Send feedback