From SOLARIS 10 SPARC SECURITY TECHNICAL IMPLEMENTATION GUIDE
Part of GEN000253
Associated with IA controls: ECLP-1
Associated with: CCI-000225
A synchronized system clock is critical for the enforcement of time-based policies and the correlation of logs and audit records with other systems. If an illicit time source is used for synchronization, the integrity of system logs and the security of the system could be compromised. If the configuration files controlling time synchronization are not protected, unauthorized modifications could result in the failure of time synchronization.
Check for an extended ACL on the NTP configuration file. # ls -l /etc/inet/ntp.conf If the permissions contain a "+", the file has an extended ACL and this is a finding.
Remove the extended ACL from the file. # chmod A- /etc/inet/ntp.conf
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