r1 - 2003-01-30 - 08:15:00 - PeterThoeny You are here: NTP >  Support Web > WebRss
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's Support web https://support.ntp.org/bin/view/Support The knowledge base web of TWiki. TWiki is a Web-Based Collaboration Platform for the Corporate World. en-us Copyright 2022 by contributing authors TWiki Administrator [webmaster@ntp.org] The contributing authors of NTP NTP NTP Public Services Project.Support https://support.ntp.org/bin/view/Support https://support.ntp.org/pub/TWiki/TWikiLogos/ntp_logo.png WebHome https://support.ntp.org/bin/view/Support/WebHome NTP Support Web This is a web based collaboration area for Community Supported Documentation for the reference implementation of NTP from www.ntp.org. Please see the ... (last changed by DruLavigne) 2022-06-23T18:54:46Z DruLavigne InstallingNTP https://support.ntp.org/bin/view/Support/InstallingNTP Installing NTP NTP may be installed from the original source code, released by the Project (which was originally from the University of Delaware starting in the 1980s ... (last changed by DruLavigne) 2022-06-23T18:52:34Z DruLavigne MonitoringAndControllingNTP https://support.ntp.org/bin/view/Support/MonitoringAndControllingNTP Monitoring and Controlling NTP See TroubleshootingNTP for checking the behavior of a particular machine. Monitoring NTP For ongoing monitoring of an NTP network there ... (last changed by HarlanStenn) 2021-04-29T00:27:34Z HarlanStenn QuickStartIndex https://support.ntp.org/bin/view/Support/QuickStartIndex Quick Start Guides Hints Documentation: Quick Start Page GettingStarted NTP 4.x for Windows NT Hints DaleWorley2 External Documents Windows ... (last changed by KelvinWong) 2019-08-23T07:11:57Z KelvinWong TimeScales https://support.ntp.org/bin/view/Support/TimeScales Time Scales There are two primary time scales used today, and https://en.wikipedia.org/wiki/UTC UTC. As of 2006, 23 leap seconds have been added to UTC. UTC was ... (last changed by RobinMallinson) 2019-07-24T15:18:50Z RobinMallinson NTPRelatedDefinitions https://support.ntp.org/bin/view/Support/NTPRelatedDefinitions NTP related definitions Many of the following come from the RFCs. The following terms are defined in RFC 1305: $ Stability: How well a clock can maintain a constant ... (last changed by NathanStrattonTreadway) 2015-05-22T00:51:43Z NathanStrattonTreadway AccessRestrictions https://support.ntp.org/bin/view/Support/AccessRestrictions ntpd access restrictions Restrictions are used to control access to your ntpd and are, unfortunately, one of the most misunderstood parts of ntpd configuration ... (last changed by AxelK) 2015-03-16T10:46:42Z AxelK GarminRefclockUsers https://support.ntp.org/bin/view/Support/GarminRefclockUsers Garmin Refclock Users NTP Version Operating System Computer Vendor and Model # Status Who 4.2.4 FreeBSD6 x86 64 18 LVC works ... (last changed by KenyonRalph) 2015-02-10T09:30:34Z KenyonRalph UndisciplinedLocalClock https://support.ntp.org/bin/view/Support/UndisciplinedLocalClock Undisciplined Local Clock The Undisciplined Local Clock should generally no longer be used. It was originally designed to be used when an ntpd must be able to serve ... (last changed by HarlanStenn) 2014-07-30T22:32:20Z HarlanStenn KnownOsIssues https://support.ntp.org/bin/view/Support/KnownOsIssues Known Operating System Issues Lost Interrupts There are several mechanisms for systems to miss timer interrupts. All cause troubles for time keeping. Scheduler HZ ... (last changed by KenyonRalph) 2014-03-02T20:55:13Z KenyonRalph ConfiguringTrimblePalisadeAcutimeRefclocks https://support.ntp.org/bin/view/Support/ConfiguringTrimblePalisadeAcutimeRefclocks Configuring Trimble Palisade/Acutime Refclocks This topic explains how to get a Trimble Palisade/Acutime refclock working and points out some tips that will be useful ... (last changed by SteveSmith) 2013-03-15T15:32:11Z SteveSmith ConfiguringAutokeyFourTwoFour https://support.ntp.org/bin/view/Support/ConfiguringAutokeyFourTwoFour Autokey Configuration for NTP 4.2.4 (and earlier) This topic provides a step by step guide for setting up NTP Autokey Authentication for NTP versions up through 4 ... (last changed by SteveKostecke) 2012-12-14T21:30:16Z SteveKostecke InexpensiveOemGps https://support.ntp.org/bin/view/Support/InexpensiveOemGps Inexpensive OEM GPS Receivers With PPS Garmin GPS 18LVC Refclock Driver: Type 20 PPS: 1us Cost: ~$70 $80 (2007 11 10) Specifications: https ... (last changed by DavidTaylor) 2012-07-24T05:51:57Z DavidTaylor NTPRelatedRFCs https://support.ntp.org/bin/view/Support/NTPRelatedRFCs NTP Related RFCs Draft RFCs (None at this time) Current RFCs 5905: Network Time Protocol Version 4: Protocol and Algorithms Specification 5906: Network ... (last changed by HarlanStenn) 2010-07-08T07:10:24Z HarlanStenn ConfiguringWWVRefclocks https://support.ntp.org/bin/view/Support/ConfiguringWWVRefclocks Configuring WWV Refclocks These notes concern getting the WWV refclock driver working on Linux. Redhat linux 9.0 did not work with ntp 4.2.0 due to some unsupported ... (last changed by DavidAndersen) 2009-10-28T21:46:04Z DavidAndersen FrequentlyAskedQuestionsDev https://support.ntp.org/bin/view/Support/FrequentlyAskedQuestionsDev TOPIC TITLE HERE Security of NTP see https://www.ietf.org/rfc/rfc1305.txt Appendix C RalfHauser 16 Sep 2009 (last changed by RalfHauser) 2009-09-16T14:04:02Z RalfHauser
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