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NTP users are strongly
[0 [ake immedinre action [0 ensure that their
NTP daemons are nol
susceptible t0
used in distrbuted denial-of-
service (DDoS ) attacks. Please also tke this opportunity [0 detent denial-
NETVFOUNDATION:
of-service attacks by implmeig Igesidd Egress [eling _hough
BLDE:
ntp-4.2.8p15 was released on 23 June ZUZO.
NTP Projects
[l acidresses
medium-severity security issue in ntpd, and provides 13 other
R & D
non-security fxes improvements over 4,2.8p14,
Public Services
Please see our ATP Secy Norcg page tor vulnerability and mitigation
Useful Links
details
Contributors
Developer Notes
Welcome t0 ntp org; home of the Network Time Protocol project:
Issues ard Bugs
RFCs
Ihis
page Is home for the NTP Project (RRD). Thls web site;and all pages dlrectly conalned wilhin; are Inthe
domail:
Time Servers
Some pottions of this site may be copyrighted by other authors. Please contact the Webmaster with anV questions regarding
copyrighi , The NTP softwale distlbution Is
Copyrighted, as described in the NIPcupyghLpge
Tarballs
Stable: 4.2.8p15
NTP is a protocol designed t0 synchronize the clocks 0f computers over a network:
2020/06/23
NTP version 4 &
significant revision al the previous NTP standard, Is lhe curtent development version: [Lis formalized by RFCs
Dev:: 4.3,99
2019/06/07
released by the [ETE;
The NTP Project (RBD)
The NTP Project conducts Research and Development in NTP and produces the Official Reference Implementation of NTP along
with lhe [mpkemenllnDuik Background inlomation abou NTP along will brielings and
bibllography;
aE
available a the Netuik Ime_uchonzion FQj Kgg:
The NTP Public Services Project
The VTP Dublic Services Proiect nrovides resources forthe NTP sofrware available here
which is the Omficial Referenee Imnlementaron nt NTP The
ufged
being'
"public