Paloalto Networks Updated PCNSE Exam Questions and Answers by arham

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.

https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-networking-admin/nat/nat-configuration-examples/destination-nat-exampleone-to-one-mapping

For a network security administrator to authenticate and identify a user with a new BYOD-type device that is not joined to the corporate domain, the most effective method is to use an Authentication policy targeting users not yet identified by the system.

A. an Authentication policy with 'unknown' selected in the Source User field:

An Authentication policy allows the firewall to challenge unidentified users for credentials. By selecting 'unknown' in the Source User field, the policy targets users who have not yet been identified by the firewall, which would include users on new BYOD devices not joined to the domain.

Once the user provides valid credentials, the firewall can authenticate the user and map their identity to subsequent sessions, enabling the application of user-based policy rules and monitoring.

This approach ensures that new and unknown devices can be properly authenticated and identified without compromising security or requiring the device to be part of the corporate domain.