What happens to inherited Firewall Rules applied through a parent-level Policy?

When Firewall Rules are inherited from a parent-level policy in Trend Micro Deep Security, they are tied to that parent policy's configuration. This means that while a child-level policy can define its own rules, it cannot completely unassign or disregard the inherited rules from the parent policy. They remain effective and intact unless explicitly deleted or overridden in the parent policy itself.

This design ensures that fundamental security settings, such as firewall rules, maintain a level of continuity and enforceability across all child policies. It helps in maintaining a consistent security posture throughout the environment. Consequently, the derived child-level policies can add specificity, but they cannot eliminate the foundational controls set in the parent-level policy.