driftfile      /var/lib/ntp/ntp.drift
logfile        /var/log/ntp

# Specify one or more NTP servers.
server ubndc01.example.com

# By default, exchange time with everybody, but don't allow configuration.
restrict default kod notrap nomodify nopeer mssntp limited

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