The Untrusted reputation level represents URLs associated with malicious, undesirable, or demonstrably unsafe behavior and is therefore the appropriate selection for the access control rule. Questionable applies to URLs that exhibit suspicious characteristics but lack sufficient evidence to be classified as definitively malicious. Neutral identifies sites without a strong positive or negative reputation, while Favorable indicates generally acceptable sites with a positive reputation history. Secure Firewall Management Center combines URL categories with reputation values to provide more precise web-control decisions. Selecting Untrusted enables the rule to match the highest-risk URLs covered by the requirement without unnecessarily treating merely unknown or neutral sites as confirmed threats. Cisco documents URL reputation as the risk component used with URL categories in category-and-reputation-based filtering. Cisco Secure Firewall URL filtering