112 lines
4.1 KiB
Plaintext
112 lines
4.1 KiB
Plaintext
#
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# $FreeBSD: releng/11.1/etc/ntp.conf 314531 2017-03-02 01:23:17Z ian $
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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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# Set the target and limit for adding servers configured via pool statements
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# or discovered dynamically via mechanisms such as broadcast and manycast.
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# Ntpd automatically adds maxclock-1 servers from configured pools, and may
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# add as many as maxclock*2 if necessary to ensure that at least minclock
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# servers are providing good consistant time.
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#
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tos minclock 3 maxclock 6
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#
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# The following pool statement will give you a random set of NTP servers
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# geographically close to you. A single pool statement adds multiple
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# servers from the pool, according to the tos minclock/maxclock targets.
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# See http://www.pool.ntp.org/ for details. Note, pool.ntp.org 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 ntp.inode.at iburst
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#server ntp.favey.ch iburst
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#server ntp.bcs2005.de iburst
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#server time.nettel.cz iburst
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#server domser.atomki.mta.hu iburst
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pool 0.at.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 to sync against, comment out the above pool, uncomment
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# the next one, and replace CC with the country's abbreviation.
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# Make sure that the hostname resolves to a proper IP address!
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#
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# pool 0.CC.pool.ntp.org iburst
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#
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# To configure a specific server, such as an organization-wide local
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# server, add lines similar to the following. One or more specific
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# servers can be configured in addition to, or instead of, any server
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# pools specified above. When both are configured, ntpd first adds all
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# the specific servers, then adds servers from the pool until the tos
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# minclock/maxclock targets are met.
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#
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#server time.my-internal.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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# The "restrict source" line allows peers to be mobilized when added by
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# ntpd from a pool, but does not enable mobilizing a new peer association
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# by other dynamic means (broadcast, manycast, ntpq commands, etc).
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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 noquery nopeer
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restrict -6 default limited kod nomodify notrap noquery nopeer
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restrict source limited kod nomodify notrap 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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#
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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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