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# /etc/ntp.conf, configuration for ntpd
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# ntpd will use syslog() if logfile is not defined
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# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help
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driftfile /var/lib/ntp/ntp.drift
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statsdir /var/log/ntpstats/
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# Enable this if you want statistics to be logged.
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#statsdir /var/log/ntpstats/
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statistics loopstats peerstats clockstats
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filegen loopstats file loopstats type day enable
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# You do need to talk to an NTP server or two (or three).
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#server ntp.your-provider.example
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server ntp.ubuntulinux.org
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# pool.ntp.org maps to more than 100 low-stratum NTP servers.
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# Your server will pick a different set every time it starts up.
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# *** Please consider joining the pool! ***
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# *** <http://www.pool.ntp.org/#join> ***
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# ... and use the local system clock as a reference if all else fails
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# NOTE: in a local network, set the local stratum of *one* stable server
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# to 10; otherwise your clocks will drift apart if you lose connectivity.
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fudge 127.127.1.0 stratum 13
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# pool.ntp.org maps to about 1000 low-stratum NTP servers. Your server will
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# pick a different set every time it starts up. Please consider joining the
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# pool: <http://www.pool.ntp.org/join.html>
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server 0.debian.pool.ntp.org iburst dynamic
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server 1.debian.pool.ntp.org iburst dynamic
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server 2.debian.pool.ntp.org iburst dynamic
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server 3.debian.pool.ntp.org iburst dynamic
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# Access control configuration; see /usr/share/doc/ntp-doc/html/accopt.html for
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# details. The web page <http://support.ntp.org/bin/view/Support/AccessRestrictions>
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# might also be helpful.
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# Note that "restrict" applies to both servers and clients, so a configuration
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# that might be intended to block requests from certain clients could also end
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# up blocking replies from your own upstream servers.
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# By default, exchange time with everybody, but don't allow configuration.
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# See /usr/share/doc/ntp-doc/html/accopt.html for details.
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restrict default kod notrap nomodify nopeer noquery
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restrict -4 default kod notrap nomodify nopeer noquery
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restrict -6 default kod notrap nomodify nopeer noquery
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# Local users may interrogate the ntp server more closely.
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restrict 127.0.0.1 nomodify
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# Clients from this (example!) subnet have unlimited access,
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# but only if cryptographically authenticated
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#restrict 192.168.123.0 mask 255.255.255.0 notrust
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# Clients from this (example!) subnet have unlimited access, but only if
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# cryptographically authenticated.
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#restrict 192.168.123.0 mask 255.255.255.0 notrust
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# If you want to provide time to your local subnet, change the next line.
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# (Again, the address is an example only.)
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#broadcast 192.168.123.255
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# If you want to listen to time broadcasts on your local subnet,
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# de-comment the next lines. Please do this only if you trust everybody
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# If you want to listen to time broadcasts on your local subnet, de-comment the
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# next lines. Please do this only if you trust everybody on the network!