ntpd stratum 1 timeserver config

ntp.conf

driftfile /var/lib/ntp/ntp.drift
leapfile /usr/share/zoneinfo/leap-seconds.list

# 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

########################################
### PPS Clock
########################################
server 127.127.22.0  minpoll 3  maxpoll 3
fudge 127.127.22.0  refid PPS  stratum 0   time1 0.002

########################################
### NMEA Clock
########################################
server 127.127.28.0 minpoll 3 maxpoll 3 prefer
fudge 127.127.28.0 time1 .066 flag1 0 refid GPS stratum 0

pool 0.us.pool.ntp.org iburst
pool 1.us.pool.ntp.org iburst
pool 2.us.pool.ntp.org iburst
pool 3.us.pool.ntp.org iburst

restrict -4 default kod notrap nomodify nopeer noquery limited
restrict -6 default kod notrap nomodify nopeer noquery limited

# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1
restrict ::1
restrict 10.0.0.0 mask 255.0.0.0

restrict source notrap nomodify noquery

broadcast 10.100.202.255

#tos minsane 3
#tos orphan 10
#tos mindist 0.4