Information
A network element experiencing a DoS attack will not be able to handle production traffic load. The high utilization and CPU caused by a DoS attack will also have an effect on control keep-alives and timers used for neighbor peering, resulting in route flapping, and will eventually sinkhole production traffic.
The device must be configured to contain and limit a DoS attack's effect on the device's resource utilization. The use of redundant components and load balancing are examples of mitigating "flood-type" DoS attacks through increased capacity.
NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.
Solution
Configure AOS using the web interface:
Navigate to Configuration >> Services >> Firewall and enable DoS protection in accordance with organization-defined policy.
Click Submit >> Pending Changes >> Deploy Changes.