During which stage of the ruleset journey do the VENs use the allow rules only mode?

The correct response indicates that during the Full Enforcement stage of the ruleset journey, the VENs (the Virtual Endpoint Nodes) operate under an "allow rules only" mode. In this stage, the policies defined in the ruleset are fully enforced, meaning that traffic is specifically allowed or denied based on the defined rulesets. This allows for the most stringent level of security to be applied, focusing on actively controlling network traffic according to the policies established.

In the Full Enforcement stage, VENs are engaged to ensure that the rules governing the traffic are adhered to without exception. This is essential as it allows organizations to enforce their security posture effectively and respond dynamically to any deviations from the established connectivity rules.

The other stages have different operational focuses. For instance, during the Visibility Only stage, the primary goal is to monitor and understand traffic patterns without enforcing any connectivity rules, making it unsuitable for a strict allow-only approach. The Selective stage may involve a mix of rules being actively enforced but does not exclusively utilize only allow rules, while the Inactive stage indicates that no rules are being applied at all.