Key Concepts

This chapter describes FortiDDoS concepts, terms, and features.

If you are new to FortiDDoS, or new to distributed denial of service (DDoS), this chapter can help you understand the problem and the mitigation techniques.

This chapter includes the following sections:

• “DDoS attack overview”

• “DDoS mitigation techniques overview”

• “Understanding FortiDDoS rate limiting thresholds”

• “Using FortiDDoS ACLs”

• “Understanding FortiDDoS protocol anomaly protection”

• “Understanding FortiDDoS Detection Mode”

• “Understanding FortiDDoS Prevention Mode”

• “Understanding FortiDDoS Asymmetric Mode”

• “Using FortiDDoS SPPs”

• “Working with the FortiDDoS Monitor graphs”

• “Working with the FortiDDoS attack log”

• “A typical workflow for investigating FortiDDoS attack events”