r97 - 2022-06-23 - 18:54:46 - DruLavigneYou are here: NTP >  Support Web > WebHome
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 WebHomeDev for discussion of this topic.

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1. NTP Support Web

This is a web-based collaboration area for Community Supported Documentation for the reference implementation of NTP from www.ntp.org. Please see the Dev Web for NTP Development.

The main starting points in this Web are:

hand A list of the main sections of this Web is available in the menu on the left side of every page

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1.2. Information for new users

TIP First time visitors should visit the User Web to learn more about the NTP TWiki and for member registration.

  • New NTP users should read the Where-To-Start file included with the NTP distribution.
  • Documentation for the current NTP distribution, along with additional information, is available on the documentation page.
  • Community supported documentation is available in the Support Web of this site.
  • NTP users who don't like to read documentation may want to refer to a QuickStart Guide.
  • If you would like to find a server to get time from, please see the public NTP server list.
  • If you would like to download NTP software please see the download page.
  • If you would like to locate NTP software other than the reference distribution, please see the links page.

1.3. Other starting points for NTP Solutions

1.4. Useful Links


  • You are currently in the Support web. The color code for this web is this background, so you know where you are.
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