An administrator is building Security rules within a device group to block traffic to and...

In Palo Alto Networks firewalls, the order of rule evaluation is critical for traffic enforcement. To ensure high priority evaluation, rules should be configured at the top of the rulebase so they are matched before others. The Security Pre-Rules are designed for shared policies across multiple device groups in Panorama, and by placing the block action rules at the top of the Pre-Rules, it guarantees that these rules are evaluated first, before any device-specific or post-rules.

For verification, please refer to the Palo Alto Networks "PAN-OS® Administrator’s Guide" or the official configuration documentation for Panorama and device group rules.