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AZLX-23-002605 - Amazon Linux 2023 must protect against or limit the effects of denial-of-service (DoS) attacks by ensuring rate-limiting measures are configured on impacted network interfaces.

Information

DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity.

This requirement addresses the configuration of Amazon Linux 2023 to mitigate the impact of DoS attacks that have occurred or are ongoing on system availability. For each system, known and potential DoS attacks must be identified and solutions for each type implemented. A variety of technologies exist to limit or, in some cases, eliminate the effects of DoS attacks (e.g., limiting processes or establishing memory partitions). Employing increased capacity and bandwidth, combined with service redundancy, may reduce the susceptibility to some DoS attacks.

NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.

Solution

Configure Amazon Linux 2023 to use the AWS ALB rate limiting feature using its built-in rate limiting capabilities. This allows the user to set rate limits at the ALB level, which will apply to all traffic passing through the load balancer.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Amazon_Linux_2023_V1R2_STIG.zip

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-5, CAT|II, CCI|CCI-002385, Rule-ID|SV-274183r1120714_rule, STIG-ID|AZLX-23-002605, Vuln-ID|V-274183

Plugin: Unix

Control ID: 932ebcf6146eb507cb9c98722add140a63bdec6e173a777bc3a19c316bc4d08c