# /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

# Specify one or more NTP servers.

# ntp-pool.mattnordhoff.net
pool ntp-pool

pool time.nist.gov

pool ntp.ubuntu.com

pool 2.us.pool.ntp.org

# ntp3.mattnordhoff.net
server ntp3 iburst

# ntp4.mattnordhoff.net
server ntp4 iburst

# ntp5.dfw1.mattnordhoff.net (self)
server ntp5 iburst

# ntp6.mattnordhoff.net
server ntp6 iburst

# ntp7.mattnordhoff.net
server ntp7 iburst

# ntp8.mattnordhoff.net
server ntp8 iburst

server tick.uh.edu iburst

server ntp.quintex.com iburst

server clock.fmt.he.net iburst

server ntp.beausteward.com iburst

server ntp.bytestacker.com iburst

server ntp.jtsage.com iburst

server ntp6.smatwebdesign.com iburst

server ntp.melancthon.net iburst

# Access control configuration; see /usr/share/doc/ntp-doc/html/accopt.html for
# details.  The web page <http://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 default notrap nomodify nopeer noquery limited

# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1
restrict ::1

restrict source notrap nomodify noquery

# 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

#Changes recquired to use pps synchonisation as explained in documentation:
#http://www.ntp.org/ntpfaq/NTP-s-config-adv.htm#AEN3918

#server 127.127.8.1 mode 135 prefer    # Meinberg GPS167 with PPS
#fudge 127.127.8.1 time1 0.0042        # relative to PPS for my hardware

#server 127.127.22.1                   # ATOM(PPS)
#fudge 127.127.22.1 flag3 1            # enable PPS API

controlkey 9
keys /etc/ntp/keys
trustedkey 9

discard average 2 minimum 1

leapfile /etc/ntp/leap-seconds

mru maxage 8 maxmem 8192

tos maxclock 7