b5bdbd0461
The working copy of leapfile resides in /var/dbntpd.leap-seconds.list. /etc/ntp/leap-seconds (periodically updated from ftp://time.nist.gov/pub/ or ftp://tycho.usno.navy.mil/pub/ntp/) contains the master copy should automatic leapfile updates be disabled (default). Automatic leapfile updates are fetched from $ntp_leapfile_sources, defaulting to https://www.ietf.org/timezones/data/leap-seconds.list, within $ntp_leapfile_expiry_days (default 30 days) from leap-seconds file expiry. Automatic updates can be enabled by setting $daily_ntpd_leapfile_enable="YES" in periodic.conf. To avoid congesting the ntp leapfile source the automatic update randomized by default but can be disabled through daily_ntpd_avoid_congestion="NO" in periodic.conf. Suggested by: des Reviewed by: des, roberto, dwmalone, ian, cperciva, glebius, gjb MFC after: 1 week X-MFC with: r289421, r293037
87 lines
3.0 KiB
Plaintext
87 lines
3.0 KiB
Plaintext
#
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# $FreeBSD$
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#
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# Default NTP servers for the FreeBSD operating system.
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#
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# Don't forget to enable ntpd in /etc/rc.conf with:
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# ntpd_enable="YES"
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#
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# The driftfile is by default /var/db/ntpd.drift, check
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# /etc/defaults/rc.conf on how to change the location.
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#
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#
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# The following three servers will give you a random set of three
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# NTP servers geographically close to you.
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# See http://www.pool.ntp.org/ for details. Note, the pool encourages
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# users with a static IP and good upstream NTP servers to add a server
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# to the pool. See http://www.pool.ntp.org/join.html if you are interested.
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#
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# The option `iburst' is used for faster initial synchronization.
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#
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server 0.freebsd.pool.ntp.org iburst
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server 1.freebsd.pool.ntp.org iburst
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server 2.freebsd.pool.ntp.org iburst
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#server 3.freebsd.pool.ntp.org iburst
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#
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# If you want to pick yourself which country's public NTP server
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# you want sync against, comment out the above servers, uncomment
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# the next ones and replace CC with the country's abbreviation.
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# Make sure that the hostnames resolve to a proper IP address!
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#
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# server 0.CC.pool.ntp.org iburst
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# server 1.CC.pool.ntp.org iburst
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# server 2.CC.pool.ntp.org iburst
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#
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# Security:
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#
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# By default, only allow time queries and block all other requests
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# from unauthenticated clients.
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#
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# See http://support.ntp.org/bin/view/Support/AccessRestrictions
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# for more information.
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#
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restrict default limited kod nomodify notrap nopeer noquery
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restrict -6 default limited kod nomodify notrap nopeer noquery
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#
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# Alternatively, the following rules would block all unauthorized access.
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#
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#restrict default ignore
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#restrict -6 default ignore
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#
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# In this case, all remote NTP time servers also need to be explicitly
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# allowed or they would not be able to exchange time information with
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# this server.
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#
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# Please note that this example doesn't work for the servers in
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# the pool.ntp.org domain since they return multiple A records.
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#
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#restrict 0.pool.ntp.org nomodify nopeer noquery notrap
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#restrict 1.pool.ntp.org nomodify nopeer noquery notrap
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#restrict 2.pool.ntp.org nomodify nopeer noquery notrap
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#
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# The following settings allow unrestricted access from the localhost
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restrict 127.0.0.1
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restrict -6 ::1
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restrict 127.127.1.0
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#
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# If a server loses sync with all upstream servers, NTP clients
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# no longer follow that server. The local clock can be configured
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# to provide a time source when this happens, but it should usually
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# be configured on just one server on a network. For more details see
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# http://support.ntp.org/bin/view/Support/UndisciplinedLocalClock
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# The use of Orphan Mode may be preferable.
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#
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#server 127.127.1.0
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#fudge 127.127.1.0 stratum 10
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# See http://support.ntp.org/bin/view/Support/ConfiguringNTP#Section_6.14.
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# for documentation regarding leapfile. Updates to the file can be obtained
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# from ftp://time.nist.gov/pub/ or ftp://tycho.usno.navy.mil/pub/ntp/.
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# Use either leapfile in /etc/ntp or weekly updated leapfile in /var/db.
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#leapfile "/etc/ntp/leap-seconds"
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leapfile "/var/db/ntpd.leap-seconds.list"
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