#
# /etc/ntp/ntp.conf: ntp configuration
#

###############################################################################
# Default paths

logfile		/var/log/ntp.log
pidfile		/var/run/ntp/ntpd.pid
driftfile	/var/lib/ntp/ntp.drift
#statsdir	/var/lib/ntp/stats/

###############################################################################
# Authentication stuff
#
# keys /etc/ntp/ntp.keys            # path for keys file
# trustedkey 1 2 3 4 5 6 14 15  # define trusted keys
# requestkey 15                 # key (7) for accessing server variables
# controlkey 15                 # key (6) for accessing server variables

###############################################################################
# Undisciplined Local Clock. This is a fake driver intended for backup
# and when no outside source of synchronized time is available.

server 127.127.1.0              # local clock (LCL)
fudge  127.127.1.0 stratum 10   # LCL is unsynchronized


## Generic DCF77 clock on serial port (Conrad DCF77)
## Address:     127.127.8.u
## Serial Port: /dev/refclock-u
## Sample project: http://www.obbl-net.de/dcf77.html by Martin Opel
##
## u = Number of your serial port
##  
## (create soft link /dev/refclock-0 to the particular ttyS?)
##
# server 127.127.8.0 mode 5 prefer


###############################################################################
# Specify the servers you are interested in

server ntps1-0.cs.tu-berlin.de prefer
server ntps1-1.cs.tu-berlin.de
server ntp1.ptb.de
server ntp1.fau.de

###############################################################################
# Then we restrict the type of access you allow these servers.
# Were not allowing them to modify or query our Linux NTP server

restrict default ignore notrust nomodify notrap
restrict 127.0.0.1
#restrict <YOUR_IP_HERE>
restrict ntps1-0.cs.tu-berlin.de mask 255.255.255.255 nomodify notrap noquery
restrict ntps1-1.cs.tu-berlin.de mask 255.255.255.255 nomodify notrap noquery
restrict ntp1.ptb.de mask 255.255.255.255 nomodify notrap noquery
restrict ntp1.fau.de mask 255.255.255.255 nomodify notrap noquery

# Now list the NTP clients on our home network which should be able to query
# our server for the time (notice that the noquery has been removed)

#restrict 192.168.0.0 mask 255.255.255.0

# End of file