Sponsor of the Day:
Jerkmate
https://community.nwtime.org/c/ntp/hardware/28
Hardware - Network Time Foundation
This category is for discussing everything related to NTP hardware. Looking for recommendations for building an NTP device? Got a cool build to show off?
network time foundationhardware
https://lwn.net/Articles/1059200/
An effort to secure the Network Time Protocol [LWN.net]
The Network Time Protocol (NTP) debuted in 1985; it is a universally used, open specification t [...]
network time protocoleffortsecurelwn
https://www.ntp.org/reflib/ntp/
Network Time Synchronization Research Project
We consider the NTP project and ongoing development a basically mature project, although there is always the opportunity for incremental advances. There have...
network time synchronizationresearch project
https://community.nwtime.org/t/vist-ntf-at-scale-23x/94
Vist NTF at SCALE 23x - General - Network Time Foundation
Visit Network Time Foundation at booth 330 in the Expo Hall.
scale 23x generalnetwork time foundationvistntf
https://datatracker.ietf.org/doc/html/rfc5905
RFC 5905 - Network Time Protocol Version 4: Protocol and Algorithms Specification
Network Time Protocol Version 4: Protocol and Algorithms Specification (RFC 5905, )
network time protocolversion 4rfc5905algorithms
https://www.ntp.org/documentation/ietf/ntp-tcp-services/
Network Time Protocol: TCP Services
Traditionally, NTP has only used UDP. Since UDP packets have length limits, and there are rate limits imposed by the protocol specification, TCP can be used...
network time protocoltcp services
https://downloads.nwtime.org/ntp/hardware/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://datatracker.ietf.org/doc/html/rfc5908
RFC 5908 - Network Time Protocol (NTP) Server Option for DHCPv6
Network Time Protocol (NTP) Server Option for DHCPv6 (RFC 5908, )
network time protocolntp serverrfc5908option
https://community.nwtime.org/t/images-of-scale-23x/357
Images of SCaLE 23x - General - Network Time Foundation
Booth is ready and waiting for the Expo hall to open!
scale 23x generalnetwork time foundationimages
https://community.nwtime.org/t/clock-manager-proxy-service-json-configuration-file/48
Clock Manager proxy service JSON configuration file - Documentation - Network Time Foundation
documentation network timeclock managerproxy serviceconfiguration filejson
https://www.rfc-editor.org/rfc/rfc5905.html
RFC 5905: Network Time Protocol Version 4: Protocol and Algorithms Specification
network time protocolversion 4rfc5905algorithms
https://www.ntp.org/reflib/exec/
Executive Summary: Computer Network Time Synchronization
The Network Time Protocol (NTP) is used to synchronize the clocks of millions of systems on the public Internet and private networks. This document contains an...
network time synchronizationexecutive summarycomputer
https://downloads.nwtime.org/libptpmgmt/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://community.nwtime.org/
Network Time Foundation
Open Source Time Synchronization
network time foundation
https://www.nwtime.org/donate/
Donate to Network Time Foundation
Every dollar helps! If you donate $125 or more you qualify for the benefits of Membership.
network time foundationdonate
https://downloads.nwtime.org/ntp/4.0/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://www.nwtime.org/about/
About Network Time Foundation
Learn more about the critical role of Network Time Foundation, how it came to be, the importance of timekeeping, and how we approach our custodial...
network time foundation
https://community.nwtime.org/c/khronos/11
Khronos - Network Time Foundation
This category is all about Khronos. Here are some tips on its organization:
network time foundationkhronos
https://www.meinbergglobal.com/english/info/ntp.htm
NTP - a comprehensive Guide on Network Time Synchronization
Sep 29, 2021 - NTP - The Network Time Protocol by the NTP project. Facts, infos and practical examples for using NTP with different operating sytems and with different time...
network time synchronizationcomprehensive guidentp
https://community.nwtime.org/c/khronos/in-the-news/13
In the News - Network Time Foundation
Topics in this category are specific to Khronos. If it’s not specific to Khronos, it probably belongs in General instead.
network time foundationnews
https://community.nwtime.org/t/welcome/5
Welcome! 👋 - General - Network Time Foundation
We are so glad you joined Network Time Foundation’s Discourse Community. Looking for documentation for NTP, LinuxPTP, libptpmgmt, or Khronos? Search our...
general network timewelcomefoundation
https://www.rfc-editor.org/rfc/rfc9327.html
RFC 9327: Control Messages Protocol for Use with Network Time Protocol Version 4
This document describes the structure of the control messages that were historically used with the Network Time Protocol (NTP) before the advent of more modern...
network timeversion 4rfc9327control
https://ubuntu.com/server/docs/how-to/networking/serve-ntp-with-chrony/
How to serve the Network Time Protocol with Chrony - Ubuntu Server documentation
Configure chrony as an NTP server on Ubuntu to serve Network Time Protocol information and continuously sync system clock for accuracy.
network time protocolubuntu server documentationchrony
https://mailarchive.ietf.org/arch/msg/ietf-announce/aXKmxG_gFPv3HnG3NQy6onRymIE/
Protocol Action: Network Time Protocol (Version 3) Specification, Implementation and Analysis to...
Search IETF mail list archives
protocol actionnetwork timeversion 3specificationimplementation
https://downloads.nwtime.org/ntp/4.1.1/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://community.nwtime.org/t/network-time-protocol-tcp-services/342
Network Time Protocol: TCP Services - Documentation - Network Time Foundation
network time protocoltcp servicesdocumentation foundation
https://community.nwtime.org/u/mbeckman
Profile - mbeckman - Network Time Foundation
Open Source Time Synchronization
network time foundationprofile
https://downloads.nwtime.org/ntp/4.2.4/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://community.nwtime.org/t/sntp-simple-network-time-protocol-sntp-client/130
Sntp - Simple Network Time Protocol (SNTP) Client - Documentation - Network Time Foundation
simple network timeprotocol clientdocumentation foundationsntp
https://community.nwtime.org/u/system
Profile - system - Network Time Foundation
Open Source Time Synchronization
network time foundationprofile system
https://community.nwtime.org/t/network-time-protocol-i-do-extension-field/335
Network Time Protocol I-Do Extension Field - Documentation - Network Time Foundation
network time protocolextension fielddocumentation foundation
https://git.nwtime.org/websites/ntpwww/commit/fd8febdace4dd4a4b0e5ff6b88e4ad1795526313
Fix broken bitbucket links. · fd8febdace - websites/ntpwww - Network Time Foundation Git Server
ntpwww - Source for ntp.org website.
network time foundationfix brokengit serverbitbucketlinks
https://community.nwtime.org/c/site-feedback/2
Site Feedback - Network Time Foundation
Discussion about this site, its organization, how it works, and how we can improve it.
network time foundationsite feedback
https://www.softros.com/
LAN Messenger and Network Time Sync Server-Client software for Windows.
Softros Systems Inc. presents instant LAN messenger and Atomic Time Sync Server-Client for networks of all sizes.
lan messengernetwork timesync serverclient softwarewindows
https://www.nwtime.org/membership/individual-membership-agreement/
Network Time Consortium Individual Member Agreement
NTF: Network Time Foundation, Inc. is a 501(c)(3) California Public Benefit corporation having a place of business at PO Box 918, Talent OR 97540.
network timeindividual memberconsortiumagreement
https://community.nwtime.org/t/clock-manager-presentation-at-embedded-world-2025/57
Clock Manager Presentation at Embedded World 2025 - Documentation - Network Time Foundation
2025clockmanager.pdf (1.2 MB)
embedded world 2025documentation network timeclock managerpresentationfoundation
https://community.nwtime.org/t/configuration-defaults/71
Configuration Defaults - Documentation - Network Time Foundation
documentation network timeconfigurationdefaultsfoundation
https://community.nwtime.org/t/rfc-4330-simple-network-time-protocol-sntp-version-4-for-ipv4-ipv6-and-osi/308
RFC 4330: Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 and OSI - Documentation -...
simple network timeprotocol sntp versionipv4 ipv6rfc4330
https://community.nwtime.org/u/al_zheimer49
Profile - al_zheimer49 - Network Time Foundation
Open Source Time Synchronization
network time foundationprofile al
https://community.nwtime.org/t/clock-select-algorithm/179
Clock Select Algorithm - Documentation - Network Time Foundation
documentation network timeclockselectalgorithmfoundation
https://community.nwtime.org/u/Dru
Profile - Dru - Network Time Foundation
Open Source Time Synchronization
network time foundationprofiledru
https://www.ntp.org/documentation/ietf/ntp-secure-network-time/
Network Time Protocol: Secure Network Time
The proposal specifies a means for NTP instances that can establish a TCP connection between themselves to create secure ephemeral keys. With the known...
network time protocolsecure
https://community.nwtime.org/t/y2036-countdown-the-ntp-rollover-is-now-10-years-away/349
Y2036 Countdown: The NTP Rollover is Now 10 Years Away - In the News - Network Time Foundation
network time foundation10 yearscountdownntprollover
https://nwtime.org/
Network Time Foundation
Leading the delivery of accurate and precise time to connected devices around the world.
network time foundation
https://community.nwtime.org/t/phc-ctl-8-directly-control-phc-device-clock/65
Phc_ctl(8): directly control PHC device clock - Documentation - Network Time Foundation
documentation network timecontrol devicephcctl8
https://community.nwtime.org/t/about-the-general-category/3
About the General category - General - Network Time Foundation
Create topics in the General category that are related to network time in general but not specific to one of the Projects (NTP, LinuxPTP, libptpmgmt, Khronos)....
category network timegeneralfoundation
https://community.nwtime.org/t/unicast-slave-configuration/84
Unicast Slave Configuration - Documentation - Network Time Foundation
documentation network timeunicastslaveconfigurationfoundation
https://community.nwtime.org/t/timestamp-capture-principles/249
Timestamp Capture Principles - Dave Mills Library - Network Time Foundation
dave mills librarynetwork time foundationtimestampcaptureprinciples
https://datatracker.ietf.org/doc/html/rfc8915
RFC 8915 - Network Time Security for the Network Time Protocol
Network Time Security for the Network Time Protocol (RFC 8915, )
network timerfc8915securityprotocol
https://sepvn.com.vn/giai-phap-may-chu-thoi-gian
Giải pháp Máy chủ Thời gian (Network Time Protocol) – Công ty Cổ phần SEP Việt Nam
network time protocolgiantysepnam
https://community.nwtime.org/t/network-time-protocol-leap-smear-refid/336
Network Time Protocol Leap Smear REFID - Documentation - Network Time Foundation
network time protocoldocumentation foundationleapsmear
https://community.nwtime.org/t/the-destination-and-tailoring-of-subscriptions-not-clear/352
The destination and tailoring of subscriptions not clear - Site Feedback - Network Time Foundation
Hi Dru, I have a query on the site subscription link. I give regularly to nwtime.org (one time , yearly) and the subscribe link is not clear as to whether a...
network time foundationsite feedbackdestinationtailoringsubscriptions
https://community.nwtime.org/t/g-8265-1-profile/72
G.8265.1 Profile - Documentation - Network Time Foundation
documentation network time1 profileg8265foundation
https://www.techtarget.com/searchnetworking/tip/Network-timing-Everything-you-need-to-know-about-NTP
A configuration guide to Network Time Protocol | TechTarget
Learn how to configure and troubleshoot Network Time Protocol in Linux, macOS and Windows systems to ensure reliable time synchronization in your network.
network time protocolconfiguration guidetechtarget
https://community.nwtime.org/c/ntp/dave-mills-library/27
Dave Mills Library - Network Time Foundation
The information in the Reference Library was originally hosted on the University of Delaware homepage for Professor David L. Mills, PhD. While much of it can...
dave mills librarynetwork time foundation
https://community.nwtime.org/t/network-time-protocol-mac-last-extension-fields/337
Network Time Protocol MAC/Last Extension Fields - Documentation - Network Time Foundation
network time protocoldocumentation foundationmaclastextension
https://community.nwtime.org/u/folkert
Profile - folkert - Network Time Foundation
Open Source Time Synchronization
network time foundationprofilefolkert
https://community.nwtime.org/t/rfc-1769-simple-network-time-protocol-sntp/313
RFC 1769: Simple Network Time Protocol (SNTP) - Documentation - Network Time Foundation
simple network timeprotocol sntpdocumentation foundationrfc1769
https://community.nwtime.org/c/ntp/discussion/24
Discussion - Network Time Foundation
Topics in this category are specific to NTP. If it’s not specific to NTP, it probably belongs in General instead.
network time foundationdiscussion
https://community.nwtime.org/t/pmc-8-ptp-management-client/66
Pmc(8): PTP management client - Documentation - Network Time Foundation
ptp management clientdocumentation network timepmc8foundation
https://datatracker.ietf.org/group/ntp/documents/
Network Time Protocols (ntp)
network timeprotocolsntp
https://downloads.nwtime.org/ntp/4.2.8/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://superuser.com/questions/1766663/dhcpv6-options-for-network-time-server
networking - DHCPv6 Options for Network Time Server - Super User
While for DHCPv4 there appears to be exactly one option to specify (S)NTP servers, namely 42, DHCPv6 seems to offer two separate ones: OPTION_SNTP_SERVERS (31)...
dhcpv6 optionsnetwork timeserver supernetworkinguser
https://downloads.nwtime.org/ntp/4.1.0/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://community.nwtime.org/t/ntp-keygen-generate-public-and-private-keys/123
Ntp-keygen - generate public and private keys - Documentation - Network Time Foundation
documentation network timeprivate keysntpkeygengenerate
https://www.nwtime.org/
Network Time Foundation
Leading the delivery of accurate and precise time to connected devices around the world.
network time foundation
https://support.ntp.org/
WebHome Main Network Time Foundation's NTP Support Wiki
network time foundationwebhome mainsupport wikintp
https://downloads.nwtime.org/ntp/4.2.6/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://www.ntp.org/documentation/ietf/ntp-mac-last-ef/
Network Time Protocol MAC/Last Extension Fields
NTP packets can be authenticated by a Message Authentication Code (MAC) if a MAC is present at the end of an NTP packet. The legacy format for this MAC is not...
network time protocolmaclastextensionfields
https://www.ntp.org/documentation/4.2.8-series/ntpdsim_new/
ntpdsim - Network Time Protocol (NTP) Simulator
The ntpdsim program is used to simulate and study the behavior of an NTP daemon that derives its time from a number of different simulated time servers. Each...
network time protocolntpsimulator
https://community.nwtime.org/c/ntp/documentation/8
Documentation - Network Time Foundation
Open Source Time Synchronization
documentation network timefoundation
https://community.nwtime.org/t/about-the-site-feedback-category/1
About the Site Feedback category - Site Feedback - Network Time Foundation
Discussion about this site, its organization, how it works, and how we can improve it.
category network timesite feedbackfoundation
https://community.nwtime.org/c/ntp/dave-mills-library/27?page=1
Dave Mills Library - Network Time Foundation
The information in the Reference Library was originally hosted on the University of Delaware homepage for Professor David L. Mills, PhD. While much of it can...
dave mills librarynetwork time foundation
https://downloads.nwtime.org/linuxptp/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://community.nwtime.org/c/libptpmgmt/documentation/17
Documentation - Network Time Foundation
Documentation and resources for libptpmgmt.
documentation network timefoundation
https://www.rfc-editor.org/rfc/rfc2030.html
RFC 2030: Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 and OSI
simple network timeprotocol sntp versionipv4 ipv6rfc2030
https://downloads.nwtime.org/ntp/4.2.0/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://community.nwtime.org/t/network-time-protocol-tcp-services-key-exchange/341
Network Time Protocol: TCP Services: Key Exchange - Documentation - Network Time Foundation
network time protocoltcp serviceskey exchangedocumentation foundation
https://community.nwtime.org/t/generic-reference-driver/262
Generic Reference Driver - Documentation - Network Time Foundation
documentation network timegenericreferencedriverfoundation
https://downloads.nwtime.org/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://www.ntp.org/documentation/ietf/ntp-i-do/
Network Time Protocol I-Do Extension Field
This proposal defines and describes a mechanism by which cooperating NTP instances may communicate any optional features they are willing to admit they support.
network time protocolextension field
https://community.nwtime.org/t/clock-manager-classes-and-files/54
Clock Manager Classes and Files - Documentation - Network Time Foundation
documentation network timeclock managerclassesfilesfoundation
https://downloads.nwtime.org/ntp/xntp2/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://downloads.nwtime.org/ntp/4.2.2/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://downloads.nwtime.org/ntp/software/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://community.nwtime.org/t/rfc-958-network-time-protocol-ntp/325
RFC 958: Network Time Protocol (NTP) - Documentation - Network Time Foundation
network time protocoldocumentation foundationrfc958ntp
https://community.nwtime.org/c/linuxptp/documentation/21
Documentation - Network Time Foundation
Man pages and configuration profiles for LinuxPTP.
documentation network timefoundation
https://community.nwtime.org/t/ntp-orphan-mode/168
NTP Orphan Mode - Documentation - Network Time Foundation
documentation network timentporphanmodefoundation
https://www.prweb.com/releases/endrun-expands-sonoma-network-time-server-family-with-quad-port-models-to-meet-demands-of-next-generation-networks-302730131.html
EndRun Expands Sonoma Network Time Server Family with Quad Port Models to Meet Demands of Next...
Mar 31, 2026 - /PRNewswire-PRWeb/ -- EndRun Technologies, a leading provider of precision time and frequency solutions, announced the release of the Sonoma D24 and N24 GPS...
network timequad portexpandssonomaserver
https://community.nwtime.org/t/rfc-8915-network-time-security-for-the-network-time-protocol/298
RFC 8915: Network Time Security for the Network Time Protocol - Documentation - Network Time...
network timeprotocol documentationrfc8915security
https://community.nwtime.org/categories
Network Time Foundation
Open Source Time Synchronization
network time foundation
https://community.nwtime.org/t/miscellaneous-commands-and-options/164
Miscellaneous Commands and Options - Documentation - Network Time Foundation
documentation network timemiscellaneouscommandsoptionsfoundation
https://community.nwtime.org/c/ntp/7
NTP - Network Time Foundation
This category is all about the Network Time Protocol (NTP). Here are some tips on its organization:
network time foundationntp
https://community.nwtime.org/t/rfc-2030-simple-network-time-protocol-sntp-version-4-for-ipv4-ipv6-and-osi/312
RFC 2030: Simple Network Time Protocol (SNTP) Version 4 for IPv4, IPv6 and OSI - Documentation -...
simple network timeprotocol sntp versionipv4 ipv6rfc2030
https://support.ntp.org/Dev
WebHome Dev Network Time Foundation's NTP Support Wiki
network time foundationsupport wikiwebhomedevntp
https://community.nwtime.org/t/chrono-log-k-series-wwvb-receiver/281
Chrono-log K-series WWVB receiver - Documentation - Network Time Foundation
documentation network timechronologserieswwvb
https://downloads.nwtime.org/ntp/sim/
Welcome to Network Time Foundation's download archive.
Network Time Foundation provides support for several time-related open source projects, including NTP and LinuxPTP.
network time foundationdownload archivewelcome
https://community.nwtime.org/c/general/4
General - Network Time Foundation
Create topics in the General category that are related to network time in general but not specific to one of the Projects (NTP, LinuxPTP, libptpmgmt, Khronos).
general network timefoundation
https://community.nwtime.org/t/about-the-general-timestamp-api-category/374
About the General Timestamp API category - General Timestamp API - Network Time Foundation
This category is all about the General Timestamp API. Here are some tips on its organization: Presentations: Click a topic’s Share button to share that page...
category network timegeneraltimestampapifoundation
https://www.rfc-editor.org/rfc/rfc1119
RFC 1119: Network Time Protocol (version 2) specification and implementation
network time protocolversion 2 specificationrfc 1119implementation