Updated on 11 Nov 2005 on SuSE 10.0

xntp-4.2.0a-46 (NTP)

Introduction

NTP - Network Time Protocol

Configuration

Install xntp (btw I am sure you have already).

# rpm -ihv xntp-4.2.0a-46.i586.rpm

Edit /etc/ntp.conf

# Restrict NTP access in default
restrict default ignore

# Allow NTP access from localhost
restrict 127.0.0.1

# Allow access from LAN
restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap

# Allow access to external NTP servers
restrict 210.173.160.57 mask 255.255.255.255 nomodify notrap noquery
restrict 210.173.160.27 mask 255.255.255.255 nomodify notrap noquery

# External NTP servers
server 210.173.160.57
server 210.173.160.27

# CMOS clock
server 127.127.1.0
fudge 127.127.1.0 stratum 10

# Drift file
driftfile /var/lib/ntp/drift/ntp.drift

# Alternate logfile
logfile /var/log/ntp

Start ntpd

# chkconfig ntp on
# /etc/init.d/ntp start
Starting network time protocol daemon (NTPD)                          done

After sometime (more than 15 minutes), verify the ntp server

# ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 ntp2.jst.mfeed. 210.173.160.56   2 u   12   64    7  814.990  -65.744  56.636
 ntp1.jst.mfeed. 210.173.160.56   2 u    7   64    7  842.208  -72.452  33.389
 LOCAL(0)        LOCAL(0)        10 l    8   64    7    0.000    0.000   0.004

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