r16 - 2010-11-13 - 05:03:14 - SteveKosteckeYou are here: NTP >  Main Web > SoftwareDownloads > ReleaseNotifications
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.

Release Notifications and Information


Notifications about new versions of NTP are available in the following ways:

Service Stable Development Download Changes
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Announcements are made through the following mailing-lists:


Our RSS Feed is published on the Network Time Procol Facebook Page.


Current version, release date and size are available from the archive.ntp.org finger daemon

  • finger ntp@archive.ntp.org for the current Stable Release
  • finger rc@archive.ntp.org for the current Stable Release Candidate
  • finger dev@archive.ntp.org for the current Development Release


Freshmeat members may subscribe to the NTP Project on Freshmeat and receive e-mail release notifications through that site.


Abbreviated release announcements are made on the NTP Reference Implementation support channel, #ntp, on irc.freenode.net


The current releases of NTP are listed on the Current Versions of NTP RSS feed. You will need an RSS Reader to view this feed; some contemporary web-browsers include an RSS Reader. Please visit the DMOZ Feed Readers directory for a list of RSS Readers.

Add our releases feed to your web-site using the following JavaScript from www.feedbucket.com:

<script language="JavaScript" src="http://www.feedbucket.com/js.php?src=http%3A%2F%2Fsupport.ntp.org%2Frss%2Freleases.xml&chan=y&desc=1&date=y" type="text/javascript"></script>
<a href="http://www.feedbucket.com/">Web RSS</a> by FeedBucket.

Microblogging, IM, and SMS

Abbreviated announcements are posted on the NTP TWitter page and NTP Identi.ca page. Users of these micro-blogging services who add NTP as a friend will see these announcements on their own pages.

TWitter and Identi.ca users may choose to receive these abbreviated release announcements through their micro-blogging service's IM gateway. Please check your micro-blogging service provider's web-site for the currently supported IM services and gateway status.

Twitter and Identi.ca users may choose to receive these abbreviated announcements on their mobile phones through their micro-blogging service's SMS gateway. Please check your micro-blogging service provider's web-site for their SMS gateway status.

ALERT! Your mobile phone provider may charge for this service.


Announcements for Stable releases of NTP are posted on the comp.protocols.time.ntp and comp.os.linux.announce news-groups.

Links and Information

The following download links and release information about NTP are available:

Download Links

In addition to the services marked Download in the Notifications table, download links are published at:

Browsable Release Information

Includable Release Information

Release Information that may be included in your web-page is published as:

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