ARBA-NT-000440 - AOS must manage excess bandwidth to limit the effects of packet flooding types of denial-of-service (DoS) attacks.

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.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_HPE_Aruba_Networking_AOS_Y26M04_STIG.zip