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  1. Home
  2. Palo Alto Networks Certification
  3. PCNSE Exam
  4. PaloAltoNetworks.PCNSE.v2025-06-10.q351 Dumps
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Question 256

A system administrator runs a port scan using the company tool as part of vulnerability check. The administrator finds that the scan is identified as a threat and is dropped by the firewall. After further investigating the logs, the administrator finds that the scan is dropped in the Threat Logs.
What should the administrator do to allow the tool to scan through the firewall?

Correct Answer: B
Explanation
The administrator should add the tool IP address to the reconnaissance protection source address exclusion in the Zone Protection profile to allow the tool to scan through the firewall. Reconnaissance protection is a feature of Zone Protection profiles that allows the firewall to detect and block network reconnaissance attempts, such as port scans. The source address exclusion list allows the administrator to whitelist up to 20 IP addresses or netmask address objects that are exempt from reconnaissance protection1. Option A is incorrect because removing the Zone Protection profile from the zone setting would disable all the zone protection features, not just reconnaissance protection. This would reduce the security of the zone and expose it to other types of attacks. Option C is incorrect because adding the tool IP address to the reconnaissance protection source address exclusion in the DoS Protection profile would not have any effect. DoS Protection profiles are used to protect against excessive traffic volume, not network reconnaissance attempts. Option D is incorrect because changing the TCP port scan action from Block to Alert in the Zone Protection profile would only affect TCP port scans, not other types of scans. It would also affect all TCP port scans, not just those from the tool IP address.
https://docs.paloaltonetworks.com/pan-os/10-2/pan-os-admin/zone-protection-and-dos-protection/configure-zone
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Question 257

To ensure that a Security policy has the highest priority, how should an administrator configure a Security policy in the device group hierarchy?

Correct Answer: A
Explanation
https://docs.paloaltonetworks.com/panorama/9-0/panorama-admin/panorama-overview/centralized-firewall-conf
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Question 258

A company needs to preconfigure firewalls to be sent to remote sites with the least amount of reconfiguration. Once deployed, each firewall must establish secure tunnels back to multiple regional data centers to include the future regional data centers.
Which VPN configuration would adapt to changes when deployed to the future site?

Correct Answer: C
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Question 259

A company wants to add threat prevention to the network without redesigning the network routing.
What are two best practice deployment modes for the firewall? (Choose two.)

Correct Answer: A,D
Explanation
A and D are the best practice deployment modes for the firewall if the company wants to add threat prevention to the network without redesigning the network routing. This is because these modes allow the firewall to act as a transparent device that does not affect the existing network topology or routing1.
A: VirtualWire mode allows the firewall to be inserted into any existing network segment without changing the IP addressing or routing of that segment2. The firewall inspects traffic between two interfaces that are configured as a pair, called a virtual wire. The firewall applies security policies to the traffic and forwards it to the same interface from which it was received2.
D: Layer 2 mode allows the firewall to act as a switch that forwards traffic based on MAC addresses3.
The firewall inspects traffic between interfaces that are configured as Layer 2 interfaces and belong to the same VLAN. The firewall applies security policies to the traffic and forwards it to the appropriate interface based on the MAC address table3.
Verified References:
1: https://www.garlandtechnology.com/blog/whats-your-palo-alto-ngfw-deployment-plan
2:
https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-admin/networking/configure-interfaces/virtual-wire
3:
https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-admin/networking/configure-interfaces/layer-2.htm
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Question 260

Which two items must be configured when implementing application override and allowing traffic through the firewall? (Choose two.)

Correct Answer: B,C
When implementing an application override in a Palo Alto Networks firewall, the primary goal is to explicitly define how specific traffic is identified and processed by the firewall, bypassing the regular App-ID process. This is particularly useful for traffic that might be misidentified by App-ID or for applications that require special handling for performance reasons.
To successfully implement application override, the following items must be configured:
B). Application override policy rule:
This is a specialized policy rule that you create to specify the criteria for the traffic you want to override. In this rule, you define the source and destination zones, addresses, and ports. Instead of relying on the App-ID engine to identify the application, the firewall uses the criteria defined in the application override policy to classify the traffic.
C). Security policy rule:
After defining an application override policy, you must also configure a security policy rule to allow the overridden traffic through the firewall. This rule specifies the action (allow, deny, drop, etc.) for the traffic that matches the application override policy. It's essential to ensure that the security policy rule matches the traffic defined in the application override policy to ensure that the intended traffic is allowed through the firewall.
For detailed guidance on configuring application override and the necessary security policies, refer to the official Palo Alto Networks documentation. This resource provides step-by-step instructions and best practices for effectively managing traffic using application overrides.
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