If a user attempts to access a website that has been blocked by an organizational content filter rule, what type of default notification will the firewall trigger?

When a user tries to access a blocked website due to an organizational content filter rule, the firewall is designed to trigger a specific type of notification to inform the user about the restriction. In this context, the correct answer is "Alert."

An alert is a communication that immediately notifies users that their action—attempting to access a blocked site—has been intercepted by the firewall. This alert serves both a practical purpose by preventing unauthorized access and an educational one by making the user aware of the organization's content policy.

Understanding this concept is crucial as it highlights how security measures can inform users about policies in place while managing internet access based on predefined rules. The alternative options like "Warning," "Notification," and "Notice" do not specifically capture the immediate and proactive nature of the communication provided by the firewall in this situation. Each of these terms lacks the urgency and specificity associated with the term "Alert," which aligns with the functionality of the content filter in a network security context.