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NTP: The Network Time Protocol
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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.
NETWORWNDATION
ntp-4.2.8p15 was released on 23 June 2020_
It addresses
medium-severity security issue in ntpd, and provides 13 other non-security fixes improvements over
4.2.8p14.
NTP Projects
R & D
Please see our NTP Security Notice page for vulnerability and mitigation details
Public Services
Welcome to ntp.org; home of the Network Time Protocol project:
Useful Links
Contributors
This page is home for the NTP Project (R&D) This web site; and all pages directly contained within; are in the public domain: Some portions of this site may be
'copyrighted by other authors. Please contact the
Developer Notes
webmaster with any questions regarding copyright: The NTP software distribution is
 copyrighted; as described in the
copyrightpage:
Issues and Bugs
RFCs
NTP is a protocol designed to synchronize the clocks of computers over a network:
Time Servers
NTP version 4
significant revision of the previous NTP standard; is the current development version: It is formalized by RECs released by the IETF
Tarballs
The NTP Project (ReD)
Stable: 4.2.8p15
2020/06/23
The NTP Project conducts Research and Development in NTP
produces the Official Reference Implementation of NTP along with the Implementation Documentation: Background information about NTP;
Dev: 4.3.99
along with briefings and a bibliography; are available at the Nerwork Time Synchronization Project Page:
2019/06/07
The NTP Public Services Project
RSS
The NTP Public Services Project provides resources for the NTP software available here; which is the Official Reference Implementation of NTP The available resources include:
Upve
RadY
Community Supported Documentation
Issue / Bug Reporting
Mailing Lists
Public Time Server Lists
Reference Implementation Downloads
Server Pool Project
Hosting resources for the NTP Public Services Project are provided by Internet Systems Consortium Inc
NTP
and