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-4.2.8p2, released on 7 April 2015, addresses two issues with crafted packets involving symmetric key encryption and Message Authentication Codes.
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:
Announcements are made through the following mailing-lists:
- Development Releases
- Stable Releases
Our RSS Feed
is published on the RSS/Blog tab of the Network Time Procol Facebook Page
. You may subscribe to this app to add our RSS Feed to your News Feed.
Current version, release date and size are available from the archive.ntp.org finger daemon
finger email@example.com for the current Stable Release
finger firstname.lastname@example.org for the current Stable Release Candidate
finger email@example.com for the current Development Release
members may subscribe to the NTP Project on Freecode
and receive e-mail release notifications through that site.
Abbreviated release announcements are made on the NTP Reference Implementation related channels on irc.freenode.net
- Stable releases are announced on #ntp
- Development releases are announced on #ntp-dev
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.
<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
will see these announcements on their own pages.
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.
Your mobile phone provider may charge for this service.
Announcements for Stable releases of NTP are posted on the comp.protocols.time.ntp
Links and Information
The following download links and release information about NTP are available:
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:
Please contact firstname.lastname@example.org
if you need our release information in another format.