restrict default kod nomodify notrap nopeer noquery

restrict 127.0.0.1

#clients
restrict 192.168.2.0  mask 255.255.255.0 nomodify notrap

#upstream time server
server 192.168.1.1

#local time
server  127.127.1.0     # local clock
fudge   127.127.1.0 stratum 10

driftfile /var/lib/ntp/drift

keys /etc/ntp/keys