PCNSE Palo Alto Networks Firewall Configuration Flashcards

A PAN-OS administrator needs to ensure that a specific critical server in the DMZ is always reachable via the same public IP, regardless of which interface handles the traffic. Which NAT type achieves this?

Answer: Static NAT with bidirectional enabled

Static NAT with bidirectional enabled creates a permanent one-to-one mapping between a private IP and a public IP, allowing both inbound and outbound traffic translation.

Which PAN-OS operational mode allows an administrator to test configuration changes in a sandboxed environment before committing them to the running configuration?

Answer: Candidate configuration

The candidate configuration in PAN-OS stores uncommitted changes that can be tested and reviewed before being committed to the active running configuration.

When WildFire analysis identifies a previously unknown file as malware, how does PAN-OS distribute the new threat signature to subscribed firewalls?

Answer: Automatically through WildFire signature updates, delivered within minutes of verdict generation

WildFire delivers new malware signatures to subscribed firewalls within approximately 5 minutes of verdict generation through automated signature updates.

An administrator is troubleshooting why traffic matching a security policy rule is being dropped. The 'test security-policy-match' CLI command shows the correct rule, but traffic still fails. What should be checked next?

Answer: Verify the security profile applied to the rule is not blocking the traffic

Even when a security rule allows traffic, an attached Security Profile (e.g., Vulnerability Protection, Antivirus) may detect and block the traffic based on threat content.

Which Panorama feature allows an administrator to push a consistent set of interface, routing, and zone configurations to multiple managed firewalls using a template-based approach?

Answer: Templates and Template Stacks

Panorama Templates define network-level settings (interfaces, routing, zones), and Template Stacks allow layering templates for hierarchical configuration push to managed firewalls.

A Palo Alto firewall is configured in Virtual Wire (V-Wire) mode. Which statement accurately describes a characteristic of this deployment mode?

Answer: The firewall is transparent to the network — no IP routing changes are needed

Virtual Wire mode makes the firewall completely transparent to the network, requiring no changes to IP addressing or routing infrastructure on adjacent devices.

Which command in the PAN-OS CLI is used to view the current session table and verify that traffic is being processed correctly through the firewall?

Answer: show session all

'show session all' displays the active session table, showing source/destination IPs, ports, applications, and the security rule applied to each session.