OpenBSD Handbook

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    • Part I. Install & Configure
      • Introduction to OpenBSD
      • Installing OpenBSD
      • The X Window System
      • Networking on OpenBSD
      • System Configuration
      • OpenBSD Basics
      • Managing Software: Packages and Ports
    • Part II. Daily Operations
      • OpenBSD Desktop Environments
      • Multimedia
      • Printing
      • Linux Compatibility
      • Windows Compatibility
      • Games
    • Part III. System Administration
      • Virtualization
      • Storage and File Systems
      • Updating and Upgrading
      • Localization
      • The OpenBSD Boot Process
      • Security
    • Part IV. Networking & Daemons
      • Services
        • Database
          • MariaDB
          • PostgreSQL
          • Redis
          • memcached
        • Directory
          • YP (NIS)
          • LDAP
        • File
          • NFS
          • Samba
        • FTP Services
          • ftpd
          • ProFTPD
          • vsftpd
          • Pure-FTPd
          • TFTP
        • Mail
          • OpenSMTPD Mail Server
          • Dovecot IMAP and POP3 Server
          • Postfix
          • Exim
          • Rspamd
        • Name
          • Unbound DNS Resolver
          • NSD Authoritative DNS Server
          • BIND DNS Server
        • Networking
          • OpenBGPD
          • rad
          • DHCP on OpenBSD
          • slaacd
        • Web
          • Apache HTTP Server
          • nginx Web Server
          • OpenBSD httpd Web Server
          • relayd Reverse Proxy
        • Logging
          • syslogd
        • Monitoring
          • SNMP
        • Remote Access
          • Audit OpenSSH
          • OpenSSH Server
        • File Synchronization
          • rsync
        • Messaging
          • RabbitMQ Message Broker
        • Time
          • NTP Time Synchronization
      • PF
        • pfctl cheat sheet
        • PF Anchors
        • PF Filter Rules
        • PF Forwarding
        • PF Lists and Macros
        • PF Load Balancing
        • PF Logging
        • PF NAT
        • PF Options
        • PF Policies
        • PF Shortcuts
        • PF Tables
      • Advanced Networking
        • High Availability and State Replication
        • Multi-WAN and Policy-Based Routing
        • VPN and Cryptographic Tunneling
        • Classic and Lightweight Tunnels
        • IPv6 at Scale
        • QoS and Traffic Shaping
        • MPLS and Label Distribution
        • Network Services at Scale
        • Virtualization and Host Networking
        • Large-Scale L2 and L3 Design
        • Telemetry, Logging, and Flow Export
        • Hardening and Operational Safety
        • Reference Architectures
        • Troubleshooting Playbooks
      • Serial Communication
    • Part V. Miscellaneous
      • Virtualization Cheat Sheet
      • OpenBSD Cheatsheet
      • How-to Guides
        • Complete the First 30 Minutes After Installation
        • Check Hardware Compatibility Before Installing
        • Bootstrap Wi-Fi Firmware Without Ethernet
        • Set Up OpenBSD as a Laptop or Workstation
        • Configure Laptop Power Management
        • Run OpenBSD as a Virtual Machine Guest
        • Install OpenBSD on a VPS or Cloud Server
        • Install OpenBSD with Full-Disk Encryption
        • Troubleshoot Web Browsers on OpenBSD
        • Create an Administrator Account with doas and SSH Keys
        • Establish a Conservative Security Baseline
        • Manage OpenBSD with Ansible
        • Recover Access and Reset the Root Password
        • Collect OpenBSD Diagnostic Evidence
        • Configure Secure Remote Access with OpenSSH
        • Set Up WordPress on OpenBSD
        • Build Third-Party Software from Ports
        • Use FIDO Security Keys with OpenSSH
        • Build OpenBSD from Source
        • Configure Wi-Fi Roaming and Wired Failover
        • Dual-Boot OpenBSD on a UEFI System
        • Troubleshoot PF, NAT, and Routing
        • Automate OpenBSD Installation with Autoinstall and PXE
        • Route Multiple VLANs with PF
        • Configure a Road-Warrior WireGuard VPN
        • Troubleshoot Package Installation and Update Failures
        • Route IPv6 Networks without NAT
        • Schedule Recurring Maintenance
        • Plan a Docker Workload Migration to OpenBSD
        • Build a Mail Server with OpenSMTPD, Dovecot, and Rspamd
        • Build a Simple Router and Firewall
        • Monitor an OpenBSD System
        • Back Up and Restore an OpenBSD System
        • Configure softraid RAID1
        • Recover an OpenBSD System That Does Not Boot
        • Install Z shell (zsh)
      • OpenBSD for Linux Users
      • OpenBSD for FreeBSD Users
      • OpenBSD for macOS Users
    • OpenBSD FAQ
    • OpenBSD Architectures
      • OpenBSD Package Search

        ntp-4.2.8pl10p6

        Package search / Categories / OpenBSD 8.0 release
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        OpenBSD branch
        OpenBSD 8.0 releaseCurrent snapshot

        OpenBSD 8.0 release ยท amd64

        Network Time Protocol reference implementation

        Project homepage: http://www.ntp.org/

        Description

        The Network Time Protocol (NTP) is used to synchronize the time of a computer client or server to another server or reference time source, such as a radio or satellite receiver or modem. It provides accuracies typically within a millisecond on LANs and up to a few tens of milliseconds on WANs relative to Coordinated Universal Time (UTC) via a Global Positioning Service (GPS) receiver, for example. Typical NTP configurations utilize multiple redundant servers and diverse network paths in order to achieve high accuracy and reliability. Some configurations include cryptographic authentication to prevent accidental or malicious protocol attacks and some provide automatic server discovery using IP multicast.

        Package information

        Ports path
        net/ntp
        Package architecture
        amd64
        Maintainer
        The OpenBSD ports mailing-list <ports@openbsd.org>
        Categories
        net
        Available flavors
        None listed

        Ports list build and test dependencies as well as runtime dependencies. pkg_add selects those needed for installation.

        Direct dependencies

        Library

        • devel/libevent2

        Build

        • devel/metaauto
        • devel/autoconf/2.69
        OpenBSD README

        This README contains unresolved ports variables; replace them before using its commands.

        +-----------------------------------------------------------------------
        | Running ntp on OpenBSD
        +-----------------------------------------------------------------------
        
        Several steps need to be taken to properly configure the NTP daemon.
        
        1. First, create or update the file ${SYSCONFDIR}/ntp.conf.  Several
           example configuration files can be found here:
        
             /usr/local/share/examples/ntp
        
        2. Now xntpd can be started with:
        
             ${RCDIR}/xntpd start
        
           Or to start 'xntpd' at every boot, add it to pkg_scripts in
           /etc/rc.conf.local.
        

        Package guides

        • Installing and updating packages

        Package details as JSON

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