NTP Server2011/04/29 | 
| Configure NTP server for time adjustment. | 
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root@dlp:~#  aptitude -y install ntp  root@dlp:~# vi /etc/ntp.conf  # line 19: make it comment #  server 0.ubuntu.pool.ntp.org#  server 1.ubuntu.pool.ntp.org#  server 2.ubuntu.pool.ntp.org#  server 3.ubuntu.pool.ntp.org#  server ntp.ubuntu.com# change servers for synchronization server ntp1.jst.mfeed.ad.jp server ntp2.jst.mfeed.ad.jp server ntp3.jst.mfeed.ad.jp # line 48: add the network range you allow to receive requests restrict 10.0.0.0 mask 255.255.255.0 nomodify notrap  root@dlp:~# /etc/init.d/ntp restart  * Stopping NTP server ntpd [ OK ] * Starting NTP server ntpd [ OK ] root@dlp:~# ntpq -p   # check working remote refid 
 st 
 t 
 when 
 poll 
 reach 
 delay 
 offset 
 jitter ===================================================================== ntp1.jst.mfeed. 210.173.160.86  2 
 u  2  64  1 
 21.227  -475.55  0.001 ntp2.jst.mfeed. 210.173.160.86  2  u 
 1  64  1  21.400 
 -475.53  0.001 ntp3.jst.mfeed. 210.173.160.86  2  u 
 -  64  1  22.087 
 -476.08  0.001 
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