The question asks for a Google Cloud product that detects firewall rules whose attributes are overlapped by other firewall rules with higher or equal priority, which describes 'shadowed' firewall rules. Firewall Insights, part of Google Cloud's Network Intelligence Center, specifically analyzes firewall rules to identify shadowed rules, overly permissive rules, and unused rules. The community discussion unanimously supports option D (Firewall Insights) with 100% consensus and references to Google's documentation confirming this capability. Other options are less suitable: Security Command Center (A) focuses on broader security posture management, not specific firewall rule overlap detection; Firewall Rules Logging (B) logs firewall rule hits but doesn't analyze overlaps; VPC Flow Logs (C) capture network flow data but don't identify rule shadowing.