The Cisco ASA must be configured to record time stamps for audit records that can be mapped to Coordinated Universal Time (UTC) or Greenwich Mean Time (GMT).
If time stamps are not consistently applied and there is no common time reference, it is difficult to perform forensic analysis.
Time stamps generated by the application include date and time. Time is commonly expressed in UTC, a modern continuation of GMT, or local time with an offset from UTC.
Review the Cisco ASA configuration to verify that it is compliant with this requirement as shown in the example below.
clock timezone EST -5 0
Note: UTC is the default; hence, the command set time-zone may not be seen in the configuration. This can be verified using the show clock command. For ASAs running on Firepower Chassis hardware, the NTP settings are visible in the FXOS web UI only (not in the ASA CLI or ASDM web UI).
If the configuration is not compliant, this is a finding.
Fix Text (F-43118r666140_fix)
Configure the Cisco ASA to record time stamps for audit records that can be mapped to UTC or GMT as shown in the example below.