4.1.4 Ensure login and logout events are collected - auditctl /var/log/lastlog

Information

Monitor login and logout events. The parameters below track changes to files associated with login/logout events.

The file /var/log/lastlog maintain records of the last time a user successfully logged in.

The /var/run/faillock/ directory maintains records of login failures via the pam_faillock module.

Rationale:

Monitoring login/logout events could provide a system administrator with information associated with brute force attacks against user logins.

Solution

Edit or create a file in the /etc/audit/rules.d/ directory ending in .rules
Example: vi /etc/audit/rules.d/50-logins.rules
Add the following lines:

-w /var/log/lastlog -p wa -k logins
-w /var/run/faillock/ -p wa -k logins




Additional Information:

Reloading the auditd config to set active settings may require a system reboot.

See Also

https://workbench.cisecurity.org/files/3366