What primary function does the intrusion prevention system provide on a FortiGate device?

The primary function of the intrusion prevention system (IPS) on a FortiGate device is to detect and prevent threats. IPS actively monitors network traffic for malicious activity and potential threats, such as attempts to exploit vulnerabilities, malware, and other security risks.

When the IPS identifies suspicious traffic, it can take specific actions to prevent those threats from compromising the network, such as blocking the traffic, alerting an administrator, or logging the event for further analysis. This role is crucial in maintaining the security posture of a network, as it enables proactive defense mechanisms against intrusions and attacks.

Other options refer to functions not specific to the IPS. Data packet forwarding is primarily handled by the core routing capabilities of the device, secure web browsing involves other features like web filtering or secure connections, and traffic control relates to monitoring and shaping traffic flows rather than direct threat management. Thus, the primary role of detecting and preventing threats solidifies the IPS as a fundamental security layer in FortiGate devices.