# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help
driftfile /var/lib/ntp/ntp.drift
# Enable this if you want statistics to be logged. statsdir /var/log/ntpstats/
statistics loopstats peerstats clockstats filegen loopstats file loopstats type day enable filegen peerstats file peerstats type day enable filegen clockstats file clockstats type day enable
# You do need to talk to an NTP server or two (or three). server tik.cesnet.cz server tak.cesnet.cz server ntp.muni.cz server time.fi.muni.cz
# pool.ntp.org maps to about 1000 low-stratum NTP servers. Your server will # pick a different set every time it starts up. Please consider joining the # pool: <www.pool.ntp.org/join.html> server 0.debian.pool.ntp.org iburst server 1.debian.pool.ntp.org iburst server 2.debian.pool.ntp.org iburst server 3.debian.pool.ntp.org iburst
# Access control configuration; see /usr/share/doc/ntp-doc/html/accopt.html for # details. The web page <support.ntp.org/bin/view/Support/AccessRestrictions> # might also be helpful. # # Note that “restrict” applies to both servers and clients, so a configuration # that might be intended to block requests from certain clients could also end # up blocking replies from your own upstream servers.
# By default, exchange time with everybody, but don't allow configuration. restrict -4 default kod notrap nomodify nopeer noquery restrict -6 default kod notrap nomodify nopeer noquery
# Local users may interrogate the ntp server more closely. restrict 127.0.0.1 restrict ::1
# Clients from this (example!) subnet have unlimited access, but only if # cryptographically authenticated. restrict 192.168.123.0 mask 255.255.255.0 notrust
# If you want to provide time to your local subnet, change the next line. # (Again, the address is an example only.) broadcast 192.168.123.255
# If you want to listen to time broadcasts on your local subnet, de-comment the # next lines. Please do this only if you trust everybody on the network! disable auth broadcastclient
# Try to avoid NTP amplification attacks disable monitor