Palo Alto Networks PAN-NSA Online Practice Questions and Exam Preparation

Palo Alto Networks PAN-NSA Online Questions & Answers

• Question 71:

  A security analyst needs to inspect outbound encrypted web traffic from internal users so that malware hidden inside HTTPS sessions can be analyzed.

  Which decryption type should be deployed?

  A. SSL Inbound Inspection
  B. SSH Proxy
  C. SSL Forward Proxy
  D. No Decrypt
  C. SSL Forward Proxy

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  Explanation

  Comprehensive and Detailed 150 to 250 words of Explanation From Palo Alto Networks Network Security Analyst Knowledge: SSL Forward Proxy is the correct decryption type for outbound encrypted traffic from internal users to external websites. In this mode, the firewall acts as an intermediary, establishing one secure connection to the destination server and another to the internal client, which allows the session to be decrypted, inspected, and re-encrypted. This removes the visibility blind spot that would otherwise exist for HTTPS traffic.

  Option A is incorrect because SSL Inbound Inspection is used for traffic coming from external users to internal servers when the organization controls the server certificate and private key.

  Option B is incorrect because SSH Proxy is specific to SSH traffic rather than general outbound HTTPS inspection.

  Option D is incorrect because No Decrypt intentionally bypasses decryption and therefore cannot provide visibility into encrypted session contents.

  For a Network Security Analyst, SSL Forward Proxy is an important control because modern threats are frequently delivered over encrypted channels. Decryption enables inspection by Content-ID and associated security profiles, improving the organization's ability to detect malware, exploit attempts, and data exfiltration hidden inside otherwise opaque web traffic. Proper certificate deployment and policy scope are essential to making this functionality effective and operationally acceptable.

• Question 72:

  An analyst is investigating why an App-ID for a custom application is showing as "unknown-tcp" in the Traffic logs. The application is running on port 8080.

  What is the most likely cause of this identification failure?

  A. The firewall does not have a signature for the proprietary application.
  B. The Security policy is set to "application-default."
  C. The traffic is being decrypted by an SSL Forward Proxy.
  D. The URL category is "private-ip-addresses."
  A. The firewall does not have a signature for the proprietary application.

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  Explanation

  Comprehensive and Detailed 150 to 250 words of Explanation From Palo Alto Networks Network Security Analyst Knowledge: When traffic is logged as unknown-tcp or unknown-udp, it indicates that the App-ID engine has inspected the traffic but could not find a matching signature in its database. For proprietary or internal applications, this is the expected behavior unless the analyst has created a Custom Application Signature. To resolve this, the analyst must capture the packet flow and identify a unique data pattern (signature) within the payload that identifies the application. Once the custom App-ID is created and committed, the firewall will correctly categorize the traffic, allowing the analyst to apply granular security profiles and reporting. Identifying and remediating "unknown" traffic is a key monitoring objective, as it helps eliminate visibility gaps and prevents malicious traffic from "hiding" behind unidentified protocols.

• Question 73:

  An analyst needs to create a security rule to allow access to a specific web application that identifies itself as "web-browsing" but uses a custom, non-standard port of TCP 9000.

  Which configuration ensures the App-ID engine can still inspect this traffic?

  A. Change the Service to "application-default."
  B. Create a custom Service object for TCP 9000 and use it in the rule.
  C. Use an Application Override rule for port 9000.
  D. Change the application to "any" and the service to TCP 9000.
  B. Create a custom Service object for TCP 9000 and use it in the rule.

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  Explanation

  Comprehensive and Detailed 150 to 250 words of Explanation From Palo Alto Networks Network Security Analyst Knowledge: In a Palo Alto Networks environment, the Service column in a security rule defines the destination port used for the initial session establishment. If an application like web-browsing (which typically uses TCP 80 or 443) is running on a non-standard port like TCP 9000, the analyst must create a custom Service object for that port.

  Using this custom service object in the security rule allows the session to be established on port 9000 while maintaining full App-ID inspection. This is critical because it allows the firewall to verify that the traffic is actually web-browsing and not a threat masquerading as a web service.

  Option A is incorrect because "application-default" would restrict the traffic to standard ports only.

  Option C (Application Override) is incorrect because it would disable Layer 7 inspection entirely, which is a significant security risk. By using a custom service with the correct App-ID, the analyst ensures that security remains granular and effective without disrupting non-standard business applications.

• Question 74:

  Which Strata Cloud Manager (SCM) feature provides a consolidated view of all high-priority security incidents across a global network, including those from firewalls and Prisma Access?

  A. Activity Insights
  B. Command Center
  C. Policy Optimizer
  D. Device Health Dashboard
  B. Command Center

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  Explanation

  Comprehensive and Detailed 150 to 250 words of Explanation From Palo Alto Networks Network Security Analyst Knowledge: The Command Center in Strata Cloud Manager (SCM) is the primary operational dashboard for high-level monitoring. Its objective is to provide a "single pane of glass" view into the overall security and health of the organization. The Command Center aggregates alerts and logs from all managed security components-including hardware firewalls, VM-Series firewalls, and Prisma Access-into a centralized incident list. This allows the analyst to quickly identify global trends, such as a widespread malware outbreak or a performance issue affecting multiple regional offices, without having to log into individual management consoles. By prioritizing incidents based on their potential impact, the Command Center helps the analyst focus their efforts on the most critical issues, improving incident response times and ensuring a consistent security posture across the entire distributed enterprise.

• Question 75:

  Which type of Security profile is required to prevent a "Brute Force" attack on a management portal or server by monitoring the rate of connection attempts?

  A. Antivirus Profile
  B. Anti-Spyware Profile
  C. Vulnerability Protection Profile
  D. URL Filtering Profile
  C. Vulnerability Protection Profile

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  Explanation

  Comprehensive and Detailed 150 to 250 words of Explanation From Palo Alto Networks Network Security Analyst Knowledge: The Vulnerability Protection Profile is the primary mechanism for protecting against exploit attempts and protocol-specific attacks, including Brute Force. While many associate vulnerability protection with software patches, it also includes signatures designed to detect anomalies in connection patterns. An analyst can configure "threshold" based signatures within this profile. For example, a signature might trigger if more than 10 login attempts are made to a specific service within 60 seconds. By setting the action to block or reset, the analyst can automatically neutralize the brute force attempt before the attacker can guess a valid credential. This is a core objective for an analyst responsible for protecting high-value internal assets. Using vulnerability protection in this manner provides a reactive defense layer that complements strong password policies and multi-factor authentication.

• Question 76:

  An analyst wants to ensure that any traffic from the "Guest-Zone" to the "Internal-Zone" is always inspected, even if there is no explicit security rule defined.

  Which default behavior should the analyst be aware of?

  A. Intrazone-default rules allow traffic by default.
  B. Interzone-default rules deny traffic by default.
  C. The firewall automatically creates a "Clean Pipe" rule for all zones.
  D. Implicit rules are always set to "log at session start."
  B. Interzone-default rules deny traffic by default.

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  Explanation

  Comprehensive and Detailed 150 to 250 words of Explanation From Palo Alto Networks Network Security Analyst Knowledge: Palo Alto Networks firewalls operate on a Zero Trust principle by default. This is reflected in the Interzone-default rule, which is an implicit rule at the bottom of the security policy base that denies all traffic between different zones. In this scenario, traffic from "Guest-Zone" to "Internal-Zone" will be blocked automatically unless the analyst creates an explicit "Allow" rule. Conversely, the Intrazone-default rule allows traffic within the same zone. A key objective for the analyst is to monitor these default rules. Often, analysts will override the default settings to enable "Logging" on the interzone-default rule to identify blocked connection attempts, providing critical data for troubleshooting or security audits.

  Understanding these implicit behaviors is fundamental to ensuring that no unauthorized traffic "leaks" between network segments.

• Question 77:

  In Panorama, which feature allows an analyst to group multiple Template Stacks together to push a common set of network configurations to a large number of firewalls simultaneously?

  A. Device Groups
  B. Variables
  C. Template Groups
  D. Managed Collectors
  B. Variables

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  Explanation

  Comprehensive and Detailed 150 to 250 words of Explanation From Palo Alto Networks Network Security Analyst Knowledge: In a large-scale deployment managed by Panorama, consistency across network configurations (like DNS, NTP, and SNMP settings) is achieved using Templates and Template Stacks. To manage common settings across many devices that may otherwise have unique requirements (like different local IP addresses), analysts use Variables.

  Variables allow the analyst to define a standard configuration in a template but leave specific values as placeholders (e.g., $Local_Gateway). When the configuration is pushed to the firewalls, Panorama inserts the specific value assigned to each individual device. This ensures that the analyst can manage hundreds of firewalls using a single, unified template stack while still accommodating the local network differences required for each site to function. This reduces the administrative burden of maintaining dozens of near-identical templates and minimizes the risk of manual configuration errors during site deployments.

• Question 78:

  An administrator wants to allow outbound access to a sanctioned SaaS application only on the ports normally used by that application, while still relying on App-ID for identification.

  Which Service setting should be used in the Security policy rule?

  A. any
  B. service-http
  C. application-default
  D. service-https
  C. application-default

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  Explanation

  Comprehensive and Detailed 150 to 250 words of Explanation From Palo Alto Networks Network Security Analyst Knowledge: The correct setting is application-default because it allows the identified application only on its standard, expected ports. This preserves the security value of App-ID while preventing the application from using arbitrary or unexpected ports. In a Palo Alto Networks firewall, this is a best-practice approach for sanctioned business traffic because it combines Layer 7 application identification with Layer 4 port restrictions.

  Option A is incorrect because using any permits the application on all ports, which weakens policy control and creates unnecessary exposure.

  Option B is incorrect because service-http is a specific service object for a particular port and protocol and does not dynamically align with the allowed default ports of the application being identified.

  Option D is similarly incorrect because service-https is a manual port definition and does not reflect the broader behavior of application-default.

  For a Network Security Analyst, using application-default helps enforce a tighter policy model. It reduces the chance that an attacker can tunnel approved applications over unusual ports and makes policy behavior more predictable during troubleshooting. This approach also supports best-practice rule design by aligning policy enforcement with the known behavior of the application itself.

• Question 79:

  An analyst is configuring a "WildFire Analysis Profile."

  Which file types can be sent to the WildFire cloud for sandbox analysis?

  A. Only .exe and .msi files.
  B. Only Microsoft Office documents.
  C. All file types supported by the Content-ID engine, including PDFs and APKs.
  D. Only encrypted files that cannot be decrypted locally.
  C. All file types supported by the Content-ID engine, including PDFs and APKs.

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  Explanation

  Comprehensive and Detailed 150 to 250 words of Explanation From Palo Alto Networks Network Security Analyst Knowledge: The WildFire Analysis Profile determines which files the firewall should forward to the WildFire cloud for behavioral analysis to detect zero-day malware. The profile is highly granular and supports a wide variety of file types beyond just executables, including PDFs, Microsoft Office files, Java Applets, and Android APKs.

  The analyst's objective is to ensure that all high-risk file vectors are included in the profile. When the firewall encounters a file that it hasn't seen before, it calculates a hash. If the hash is unknown, the file is sent to WildFire for sandboxing. If the file is determined to be malicious, WildFire generates a new signature and distributes it to all subscribers globally. By configuring a comprehensive WildFire profile, the analyst ensures that the organization is protected against the latest, previously unseen threats across all common file formats.

• Question 80:

  An analyst needs to configure a NAT policy to allow internal users to access the internet. The company only has one public IP address available on the firewall's outside interface.

  Which NAT type should be used?

  A. Static IP
  B. Dynamic IP
  C. Dynamic IP and Port (DIPP)
  D. Bi-directional NAT
  C. Dynamic IP and Port (DIPP)

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  Explanation

  Comprehensive and Detailed 150 to 250 words of Explanation From Palo Alto Networks Network Security Analyst Knowledge: In environments with limited public IP addresses, Dynamic IP and Port (DIPP) NAT-also known as Port Address Translation (PAT)-is the standard solution for outbound internet access. DIPP allows the firewall to translate multiple internal private IP addresses to a single public IP address by assigning a unique source port to each internal session. The firewall maintains a translation table to ensure that returning traffic from the internet is routed back to the correct internal host.

  This is the most efficient way to provide internet connectivity for a large number of users using a minimal amount of public IP space. For an analyst, configuring DIPP is a core task that involves defining a "Source NAT" rule where the "Original Packet" is the internal subnet and the "Translated Packet" uses the interface address of the firewall's public-facing port.