The firewall implementation must manage excess bandwidth to limit the effects of packet flooding types of denial-of-service (DoS) attacks.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-206693 | SRG-NET-000193-FW-000030 | SV-206693r604133_rule | CCI-001095 | medium |
| Description | ||||
| A firewall 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 black hole 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. | ||||
| STIG | Date | |||
| Firewall Security Requirements Guide | 2024-12-04 | |||
Details
Check Text (C-206693r604133_chk)
Use the "show" command to verify that all inbound interfaces have a stateless firewall filter to set rate limits based on a destination.
If the firewall does not have a stateless firewall filter that sets rate limits based on a destination, this is a finding.
Fix Text (F-6950r297859_fix)
Configure a stateless firewall filter to set rate limits based on a destination of the packets. Apply the stateless firewall filter to all inbound interfaces.