Building and Installing the Distribution
Debugging Reference Clock Drivers
Quick Start for Client Configurations
NTP Debugging Techniques
NTP Bug Reporting Procedures
ntp.conf(5) - ntpd Configuration File
ntp.keys(5) - NTP symmetric key file format
ntpd(8) - Network Time Protocol (NTP) daemon
ntpdig(1) - Simple Network Time Protocol (SNTP) client
ntpfrob(8) - frob the local clock hardware
ntpkeygen(8) - generate public and private keys
ntpleapfetch(8) fetch and manage leap-offset file
ntploggps(1) - log gpsd data for use by ntpviz
ntplogtemp(1) - log system temperature data for use by ntpviz
ntpmon(1) - real-time NTP status monitor
ntpq(1) - standard NTP query program
ntpsweep(1) - print information about given NTP servers
ntptime(8) - read and set kernel time variables
ntptrace(1) - trace a chain of NTP servers back to the primary source
ntpviz(1) - make offset, jitter, and other plots from logfiles
ntpwait(8) - wait until ntpd is in synchronized state
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Command Index
Access Control Support
Association Management
Authentication Support
Automatic Server Discovery Schemes
Rate Management
Reference Clock Support
External Clock Discipline and the Local Clock Driver
How to Write a Reference Clock Driver
How to build new generic clocks
Reference Clock Drivers
Copyright Notice
A Glossary of NTP-speak
Event Messages and Status Words
Kernel Model for Precision Timekeeping
ntpd System Log Messages
PPSAPI Interface for Precision Time Signals
Pulse-per-second (PPS) Signal Interfacing
How NTP Works
Mitigation Rules and the prefer Keyword
Orphan Mode
Huff-n'-Puff Filter
Clock Filter Algorithm
Clock Select Algorithm
Clock Cluster Algorithm
Clock Discipline Algorithm
Poll Process
Clock State Machine
Leap Second Processing
Leap Smearing
Rollover issues in time sources
Computer Network Time Synchronization - The Network Time Protocol (book)
NTPsec (home page)
NTP Research Project (home page)
Executive Summary: Computer Network Time Synchronization
The NTP Timescale and Leap Seconds
NTP Timestamp Calculations
The NTP Era and Era Numbering
Timestamp Capture Principles
Analysis and Simulation of the NTP On-Wire Protocols
Time Synchronization for Space Data Links
NTP Security Analysis
IEEE 1588 Precision Time Protocol (PTP)
Autonomous Configuration
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