Modify the ntp.conf file if the time on the appliance is drifting more than a few minutes

Products

• Security Information Manager

Issue/Introduction

Symptoms
You notice that the time of the SSIM appliance is drifting more than a few minutes from the NTP controlled times on the network

 

Cause

There are some restrictions in the ntp.conf file that is created when you setup the NTP configuration in the SSIM Web Configuration page. You will need to remove these restrictions.

Resolution

Note:  This is only for Security Information Manager v4.5 or Security Information Manager v4.6

Original ntp.conf file:

restrict default ignore
server 10.216.221.103
restrict 10.216.221.103 nomodify nopeer noquery notrap
server 127.127.1.0 # local clock
fudge 127.127.1.0 stratum 10
restrict 127.0.0.1
driftfile /var/lib/ntp/drift

Modify the ntp.conf file and remove these restrictions: nomodify nopeer noquery notrap.

Sample edited ntp.conf file:

restrict default ignore
server 10.21.221.103
server 10.21.221.103
restrict 10.21.221.103
server 127.127.1.0 # local clock
fudge 127.127.1.0 stratum 10
restrict 127.0.0.1
driftfile /var/lib/ntp/drift

Technical Information
the ntp.conf file is located in /etc/ntp.conf