Comprehensive Technical Explanation:
When Fireware OS is configured with Auto-Order Mode enabled, Policy Manager and the Fireware Web UI automatically organize firewall policies in an internal hierarchy based on the principle of specificity. Under automatic policy ordering rules, traffic matching evaluates policies from the most granular and specific criteria down to the broadest and most generic definitions.
The automatic ordering evaluation hierarchy prioritizes:
1. Specific user or user-group authenticated policies (e.g., User1@Firebox-DB or domain security groups).
2. Specific single host IP addresses or narrow subnets.
3. Specific interface aliases (e.g., Trusted, Optional-1).
4. Broad composite system aliases (e.g., Any-Trusted, Any-Optional).
5. General packet filters with broad service ranges (e.g., Outgoing).
Because Option D defines an authenticated user identity (User1@Firebox-DB) rather than a physical network interface or alias, it possesses the highest specificity in the policy set. Fireware automatically positions this rule above all interface-level rules (Options A and B) and general packet-filter rules (Option C), ensuring user-specific access controls are evaluated first.
[Reference: WatchGuard Network Security Essentials — Networking, Policies, and NAT: Policy Precedence and Auto-Order Priority Rules., ――――――――――――――――――――――――――――――――――――――――――――――――――――――――――]
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