r25 - 2020-11-06 - 00:52:36 - HarlanStennYou are here: NTP >

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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.

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.

NTP Release Timeline

Date	Release	# of Fixes	Comment
			No more releases of ntp-4.2.8 are planned, but if more are needed we will make them. ntp-4.2.8 will go EOL when ntp-4.4.0 is released. At that time, support for ntp-4.2.8 will be available under contract.
Jun '20	ntp-4.2.8p15
Mar '20	ntp-4.2.8p14
Mar '19	ntp-4.2.8p13
Aug '18	ntp-4.2.8p12
Feb '18	ntp-4.2.8p11
Mar '17	ntp-4.2.8p10
Nov '16	ntp-4.2.8p9
Jun '16	ntp-4.2.8p8
Apr '16	ntp-4.2.8p7
Jan '16	ntp-4.2.8p6
Jan '16	ntp-4.2.8p5
Oct '15	ntp-4.2.8p4
Jun '15	ntp-4.2.8p3
Apr '15	ntp-4.2.8p2
Feb '15	ntp-4.2.8p1
Dec '14	ntp-4.2.8	>1100	New major release. EOL for ntp-4.2.6. Support for ntp-4.2.6 available under contract.
Dec '11	ntp-4.2.6p5
Sep '11	ntp-4.2.6p4
Jan '11	ntp-4.2.6p3
Jul '10	ntp-4.2.6p2
Jun '10	RFC5905, RFC5906		Publication of the NTPv4 and Autokey Standards
Apr '10	ntp-4.2.6p1
Dec '09	ntp-4.2.6	630-1000	New major release. EOL for ntp-4.2.4
Sep '07	draft-ietf-ntp-autokey-00		Initial publication of what would become RFC5906
Dec '06	ntp-4.2.4	>450	New major release. EOL for ntp-4.2.2
Jun '06	ntp-4.2.2	>560	New major release. EOL for ntp-4.2.0
Jul '05	draft-ietf-ntp-ntpv4-proto-00		Initial publication of what would become RFC5905
Oct '03	ntp-4.2.0		New major release. EOL for ntp-4.1.2
Jul '03	ntp-4.1.2		New major release. EOL for ntp-4.1.1
Feb '02	ntp-4.1.1		New major release. EOL for ntp-4.1.0
Aug '01	ntp-4.1.0		New major release. EOL for ntp-4 betas. Move from CVS to BitKeeper.
Jan '00	ntp-4.0.99
May '99			Initial CVS import
Nov '98	xntp3-5.93e.tar.gz ntp-4.0.90		Last release (EOL) of ntp-3 First beta release of ntp-4
Jun '98	ntp-4.0.73
Feb '98	ntp-4.0.72
Sep '97	ntp-4.0?		First alpha release of ntp-4
Oct '96	xntp3-5.86.5
Jun '96			First ChangeLog comment from Harlan's autoconf conversion
Apr '96	xntp3.5f		Dave's last solo NTPv3 release
Jun '94	xntp3.3wy
Jun '93	xntp3		Initial release?
Mar '92	RFC1305		Publication of the NTPv3 Standard
Nov '89	xntp2		Initial release?
Sep '89	RFC1119		Publication of the NTPv2 Standard
Jul '88	RFC1059		Publication of the NTPv1 Standard
Sep '85	RFC958		Publication of the NTP Standard Proposal
Feb '81	IEN-173		Dave publishes "Time Synchronization in DCNET Hosts", the first report on the first implementation of NTP

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