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Last update: May 4, 2022 17:05 UTC (dbea9b7d4)

Build and Install

• Building and Installing the Distribution
• Quick Start
• Release Notes
• Build Options
• NTP Debugging Techniques
• Debugging Reference Clock Drivers
• ntpd Event Messages and Status Words
• ntpd System Log Messages
• NTP Bug Reporting Procedures

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Program Manual Pages

• ntpd - Network Time Protocol (NTP) daemon
• ntpq - standard NTP query program
• ntpdc - special NTP query program
• ntpdate - set the date and time via NTP
• sntp - Simple Network Time Protocol (SNTP) client
• ntptrace - trace a chain of NTP servers back to the primary source
• tickadj - set time-related kernel variables
• ntptime - read and set kernel time variables
• ntp-keygen - generate public and private keys
• ntpdsim - Network Time Protocol (NTP) simulator

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Configuration Commands and Options

• Command Index
• Server Options
• Access Control Options
• Authentication Options
• Monitoring Options
• Reference Clock Options
• Miscellaneous Options
• Configuration File Definition (Advanced)

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Client and Server Configuration

• Association Management
• Rate Management and the Kiss-o'-Death Packet
• Automatic Server Discovery

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Reference Clock Support

• Reference Clock Drivers
• External Clock Discipline and the Local Clock Driver
• How to Write a Reference Clock Driver
• How to build new PARSE clocks

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Reference Clock Audio Drivers

• Reference Clock Audio Drivers
• Radio CHU Audio Demodulator/Decoder
• Radio WWV/H Audio Demodulator/Decoder
• IRIG Audio Decoder

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Miscellaneous

• Copyright Notice
• Mitigation Rules and the prefer Keyword
• Kernel Model for Precision Timekeeping
• PPSAPI Interface for Precision Time Signals
• Pulse-per-second (PPS) Signal Interfacing
• Gadget Box PPS Level Converter and CHU Modem

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Other Links

• Computer Network Time Synchronization - The Network Time Protocol (book)
• 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
• Autonomous Configuration
• Autonomous Authentication
• Autokey Protocol
• Autokey Identity Schemes