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View File conf.ntp.conf of Package ntp (Project network:time)

################################################################################
## /etc/ntp.conf
##
## Sample NTP configuration file.
## See package 'ntp-doc' for documentation, Mini-HOWTO and FAQ.
## Copyright (c) 1998 S.u.S.E. GmbH Fuerth, Germany.
##
## Author: Michael Andres,  <ma@suse.de>
##         Michael Skibbe,  <mskibbe@suse.de>
##
################################################################################

##
## Radio and modem clocks by convention have addresses in the 
## form 127.127.t.u, where t is the clock type and u is a unit 
## number in the range 0-3. 
##
## Most of these clocks require support in the form of a 
## serial port or special bus peripheral. The particular  
## device is normally specified by adding a soft link 
## /dev/device-u to the particular hardware device involved, 
## where u correspond to the unit number above. 
## 
## Generic DCF77 clock on serial port (Conrad DCF77)
## Address:     127.127.8.u
## Serial Port: /dev/refclock-u
##  
## (create soft link /dev/refclock-0 to the particular ttyS?)
##
# server 127.127.8.0 mode 5 prefer

##
## 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

##
## Add external Servers using
## # rcntp addserver <yourserver>
## 

# Access control configuration; see /usr/share/doc/packages/ntp/html/accopt.html for
# details.  The web page <http://support.ntp.org/bin/view/Support/AccessRestrictions>
# might also be helpful.
#
# Note that "restrict" applies to both servers and clients, so a configuration
# that might be intended to block requests from certain clients could also end
# up blocking replies from your own upstream servers.

# By default, exchange time with everybody, but don't allow configuration.
restrict -4 default kod notrap nomodify nopeer noquery
restrict -6 default kod notrap nomodify nopeer noquery

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

# Clients from this (example!) subnet have unlimited access, but only if
# cryptographically authenticated.
#restrict 192.168.123.0 mask 255.255.255.0 notrust

##
## Miscellaneous stuff
##

driftfile /var/lib/ntp/drift/ntp.drift # path for drift file

logfile   /var/log/ntp		# alternate log file
# logconfig =syncstatus + sysevents
# logconfig =all

# statsdir /tmp/		# directory for statistics files
# filegen peerstats  file peerstats  type day enable
# filegen loopstats  file loopstats  type day enable
# filegen clockstats file clockstats type day enable

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