Firewalls with identical configurations can be grouped for testing as one component.

In HITRUST assessments, grouping is allowed when multiple primary components (like firewalls) are functionally identical in terms of configuration, management, and security controls. If all firewalls share the same rule sets, firmware, patching schedule, and are managed consistently, they can be grouped as one for testing purposes. This prevents repetitive validation work across systems that present no material differences in control design or operation. However, grouping requires justification and supporting documentation, showing that the systems are identical. If variations exist (e.g., differing rule sets or management practices), each firewall must be treated as a separate component. Grouping improves efficiency in large environments but must be applied cautiously to maintain the accuracy and integrity of testing results.