V-206905

Discussion

If the network does not provide safeguards against DoS attacks, network resources will be unavailable to users. Installation of IPS detection and prevention components (i.e., sensors) at key boundaries in the architecture mitigates the risk of DoS attacks. These attacks can be detected by matching observed communications traffic with patterns of known attacks and monitoring for anomalies in traffic volume/type. Detection components that use rate-based behavior analysis can detect attacks when signatures for the attack do not exist or are not installed. These attacks include zero-day attacks, which are new attacks for which vendors have not yet developed signatures. Rate-based behavior analysis can detect sophisticated, distributed DoS (DDoS) attacks by correlating traffic information from multiple network segments or components. This requirement applies to the communications traffic functionality of the IPS as it pertains to handling communications traffic, rather than to the IPS device itself.

Check Content

If the device being reviewed is an IDS, this is not applicable.

Verify the IPS protects against or limits the effects of known and unknown types of DoS attacks by employing rate-based attack prevention behavior analysis.

If the device does not protect against or limit the effects of known and unknown types of DoS attacks by employing rate-based attack prevention behavior analysis, this is a finding.