| 1 | # |
| 2 | # /etc/ntp/ntp.conf: ntp configuration |
| 3 | # |
| 4 | |
| 5 | ############################################################################### |
| 6 | # Default paths |
| 7 | |
| 8 | logfile /var/log/ntp.log |
| 9 | pidfile /var/run/ntp/ntpd.pid |
| 10 | driftfile /var/lib/ntp/ntp.drift |
| 11 | #statsdir /var/lib/ntp/stats/ |
| 12 | |
| 13 | ############################################################################### |
| 14 | # Authentication stuff |
| 15 | # |
| 16 | # keys /etc/ntp/ntp.keys # path for keys file |
| 17 | # trustedkey 1 2 3 4 5 6 14 15 # define trusted keys |
| 18 | # requestkey 15 # key (7) for accessing server variables |
| 19 | # controlkey 15 # key (6) for accessing server variables |
| 20 | |
| 21 | ############################################################################### |
| 22 | # Undisciplined Local Clock. This is a fake driver intended for backup |
| 23 | # and when no outside source of synchronized time is available. |
| 24 | |
| 25 | server 127.127.1.0 # local clock (LCL) |
| 26 | fudge 127.127.1.0 stratum 10 # LCL is unsynchronized |
| 27 | |
| 28 | |
| 29 | ## Generic DCF77 clock on serial port (Conrad DCF77) |
| 30 | ## Address: 127.127.8.u |
| 31 | ## Serial Port: /dev/refclock-u |
| 32 | ## Sample project: http://www.obbl-net.de/dcf77.html by Martin Opel |
| 33 | ## |
| 34 | ## u = Number of your serial port |
| 35 | ## |
| 36 | ## (create soft link /dev/refclock-0 to the particular ttyS?) |
| 37 | ## |
| 38 | # server 127.127.8.0 mode 5 prefer |
| 39 | |
| 40 | |
| 41 | ############################################################################### |
| 42 | # Specify the servers you are interested in |
| 43 | |
| 44 | server ntps1-0.cs.tu-berlin.de prefer |
| 45 | server ntps1-1.cs.tu-berlin.de |
| 46 | server ntp1.ptb.de |
| 47 | server ntp1.fau.de |
| 48 | |
| 49 | ############################################################################### |
| 50 | # Then we restrict the type of access you allow these servers. |
| 51 | # Were not allowing them to modify or query our Linux NTP server |
| 52 | |
| 53 | restrict default ignore notrust nomodify notrap |
| 54 | restrict 127.0.0.1 |
| 55 | #restrict <YOUR_IP_HERE> |
| 56 | restrict ntps1-0.cs.tu-berlin.de mask 255.255.255.255 nomodify notrap noquery |
| 57 | restrict ntps1-1.cs.tu-berlin.de mask 255.255.255.255 nomodify notrap noquery |
| 58 | restrict ntp1.ptb.de mask 255.255.255.255 nomodify notrap noquery |
| 59 | restrict ntp1.fau.de mask 255.255.255.255 nomodify notrap noquery |
| 60 | |
| 61 | # Now list the NTP clients on our home network which should be able to query |
| 62 | # our server for the time (notice that the noquery has been removed) |
| 63 | |
| 64 | #restrict 192.168.0.0 mask 255.255.255.0 |
| 65 | |
| 66 | # End of file |