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XCCDF
Guide to the Secure Configuration of Red Hat OpenShift Container Platform 4
Kubernetes Settings
Kubernetes - Network Configuration and Firewalls
Ensure that all Routes has IP whitelist annotation
Ensure that all Routes has IP whitelist annotation
An XCCDF Rule
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Ensure that all Routes has IP whitelist annotation
Medium Severity
OpenShift has an option to set the IP whitelist for Routes [1] when creating new Routes. All routes outside the openshift namespaces and the kube namespaces should use the IP whitelist annotations. Requests from IP addresses that are not in the whitelist are dropped. [1] https://docs.openshift.com/container-platform/latest/networking/routes/route-configuration.html#nw-route-specific-annotations_route-configuration