Question 540
A site requires an inventory of TLS-enabled services without attempting authentication. Which conclusion or control should be prioritized in the test plan?
Explanation
Correct Answer
Collect approved certificate and protocol metadata from exposed endpoints. This answer directly addresses the described constraint. TLS handshakes can describe certificate names and supported protocol families. Successful validation requires: The inventory records certificate subjects and service addresses only.
Incorrect Answers
That approach concerns a different situation: the client's network team publishes a list of routable and private subnets with overlapping names. Incorrect network arithmetic can accidentally scan unauthorized ranges. The required result is that the inventory records certificate subjects and service addresses only. The appropriate action is: Collect approved certificate and protocol metadata from exposed endpoints.
That relates to a different issue: A reverse proxy presents a server header claiming a particular web product version. Response headers may be hidden, modified, or deliberately misleading. That is not a direct remedy for the requested outcome: The inventory records certificate subjects and service addresses only. The appropriate action is: Collect approved certificate and protocol metadata from exposed endpoints.
This action applies to a different case: A tester needs to identify an industrial controller while the plant prohibits active protocol enumeration. Passive OT reconnaissance reduces risk of disrupting fragile control equipment. It does not establish the present requirement, where the inventory records certificate subjects and service addresses only. The appropriate action is: Collect approved certificate and protocol metadata from exposed endpoints.