How does FortiGate handle DoS attacks?

FortiGate handles DoS attacks through its specialized denial-of-service attack prevention features that continuously monitor network traffic for anomalies and suspicious patterns indicative of such attacks. The device employs various mechanisms, including traffic profiling, anomaly detection, and rate limiting, to identify and automatically block malicious traffic before it can disrupt the network.

These features enable FortiGate to differentiate between legitimate user requests and those that are part of a DoS attack, ensuring that genuine traffic can still flow smoothly. By implementing these proactive measures, FortiGate not only prevents potential service disruptions but also maintains the integrity and availability of network services.

This approach contrasts sharply with other options. Redirecting traffic to another server may alleviate some issues temporarily but does not directly address the underlying attack. Alerting the administrator alone might inform them of an attack, but without actionable measures taken to mitigate it, the network remains vulnerable. Increasing bandwidth, while a common misconception, typically only delays the inevitable, as it does not stop the attack itself and may lead to further network strain without resolving the threat.