Which feature is used to create a predefined email notification with a defined subject in firewall log management?

The feature used for creating predefined email notifications with a defined subject in firewall log management is Email Log Automation. This functionality allows administrators to set up automated processes where specific logs are monitored and, based on defined criteria, notifications are generated and sent via email.

Email Log Automation streamlines the process of log management by ensuring that important events can be monitored without the need for manual intervention. This is especially useful for compliance and security reporting, where timely notifications about potential incidents or significant log activities are vital for maintaining a secure network. By automating these alerts, organizations can more effectively respond to issues as they arise, thus enhancing their overall security posture.

Other options, while they might seem relevant, do not specifically focus on the predefined email notification aspect that this feature highlights. Thus, Email Log Automation is rightly recognized as the mechanism designed for this purpose in firewall log management.