PSE-Strata-Pro-24 Questions and Answers

DNS Security (Answer C):

DNS Security is the appropriate subscription for addressing threats over port 53.

DNS tunneling is a common method used for data exfiltration, infiltration, and C2 activities, as it allows malicious traffic to be hidden within legitimate DNS queries.

The DNS Security service applies machine learning models to analyze DNS queries in real-time, block malicious domains, and prevent tunneling activities.

It integrates seamlessly with the NGFW, ensuring advanced protection against DNS-based threats without requiring additional infrastructure.

Why Not Threat Prevention (Answer A):

Threat Prevention is critical for blocking malware, exploits, and vulnerabilities, but it does not specifically address DNS-based tunneling or C2 activities over port 53.

Why Not App-ID and Data Loss Prevention (Answer B):

While App-ID can identify applications, and Data Loss Prevention (DLP) helps prevent sensitive data leakage, neither focuses on blocking DNS tunneling or malicious activity over port 53.

Why Not Advanced Threat Prevention and Advanced URL Filtering (Answer D):

Advanced Threat Prevention and URL Filtering are excellent for broader web and network threats, but DNS tunneling specifically requires the DNS Security subscription, which specializes in DNS-layer threats.

References from Palo Alto Networks Documentation:

DNS Security Subscription Overview

After a customer has concluded an evaluation of Palo Alto Networks solutions, it is critical to provide a detailed analysis of the results and benefits gained during the evaluation. The following two tools are most appropriate:

Why "Best Practice Assessment (BPA)" (Correct Answer A)?The BPA evaluates the customer's firewall configuration against Palo Alto Networks' recommended best practices. It highlights areas where the configuration could be improved to strengthen security posture. This is an excellent tool to showcase how adopting Palo Alto Networks' best practices aligns with industry standards and improves security performance.

Why "Security Lifecycle Review (SLR)" (Correct Answer B)?The SLR provides insights into the customer's security environment based on data collected during the evaluation. It identifies vulnerabilities, risks, and malicious activities observed in the network and demonstrates how Palo Alto Networks' solutions can address these issues. SLR reports use clear visuals and metrics, making it easier to showcase the benefits of the evaluation.

Why not "Firewall Sizing Guide" (Option C)?The Firewall Sizing Guide is a pre-sales tool used to recommend the appropriate firewall model based on the customer's network size, performance requirements, and other criteria. It is not relevant for showcasing the benefits of an evaluation.

Why not "Golden Images" (Option D)?Golden Images refer to pre-configured templates for deploying firewalls in specific use cases. While useful for operational efficiency, they are not tools for demonstrating the outcomes or benefits of a customer evaluation.

Step 1: Understanding User-to-IP Mappings

User-to-IP mappings are the foundation of User-ID, a core feature of Strata Hardware Firewalls (e.g., PA-400 Series, PA-5400 Series). These mappings link a user’s identity (e.g., username) to their device’s IP address, enabling policy enforcement based on user identity rather than just IP. Palo Alto Networks supports multiple methods to populate these mappings, depending on the network environment and authentication mechanisms.

Purpose: Allows the firewall to apply user-based policies, monitor user activity, and generate user-specific logs.

Strata Context: On a PA-5445, User-ID integrates with App-ID and security subscriptions to enforce granular access control.

When evaluating Palo Alto Networks products, prospective customers need tools that can help them assess compatibility, performance, and value within their existing architecture. The following tools are the most relevant:

Why "Proof of Concept (POC)" (Correct Answer A)?A Proof of Concept is a hands-on evaluation that allows the customer to deploy and test Palo Alto Networks products directly within their environment. This enables them to assess real-world performance, compatibility, and operational impact.

Why "Security Lifecycle Review (SLR)" (Correct Answer C)?An SLR provides a detailed report of a customer’s network security posture based on data collected during a short evaluation period. It highlights risks, vulnerabilities, and active threats in the customer’s network, demonstrating how Palo Alto Networks solutions can address those risks. SLR is a powerful tool for justifying the value of a product in the customer’s architecture.

Why "Ultimate Test Drive" (Correct Answer D)?The Ultimate Test Drive is a guided hands-on workshop provided by Palo Alto Networks that allows prospective customers to explore product features and capabilities in a controlled environment. It is ideal for customers who want to evaluate products without deploying them in their production network.

Why not "Policy Optimizer" (Option B)?Policy Optimizer is used after a product has been deployed to refine security policies by identifying unused or overly permissive rules. It is not designed for pre-deployment evaluations.

Why not "Expedition" (Option E)?Expedition is a migration tool that assists with the conversion of configurations from third-party firewalls or existing Palo Alto Networks firewalls. It is not a tool for evaluating the suitability of products in the customer’s architecture.

SASE (Secure Access Service Edge) is a cloud-based solution that combines networking and security capabilities to address modern enterprise needs. However, there are scenarios where an on-premises solution is more appropriate.

A. High growth phase with existing and planned mergers, and with acquisitions being integrated.

This scenario typically favors a SASE solution since it provides flexible, scalable, and centralized security that is ideal for integrating newly acquired businesses.

B. Most employees and applications in close physical proximity in a geographic region.

This scenario supports the choice of an on-premises solution. When employees and applications are concentrated in a single geographic region, traditional on-premises firewalls and centralized security appliances provide cost-effective and efficient protection without the need for distributed, cloud-based infrastructure.

C. Hybrid work and cloud adoption at various locations that have different requirements per site.

This scenario aligns with a SASE solution. Hybrid work and varying site requirements are better addressed by SASE’s ability to provide consistent security policies regardless of location.

D. The need to enable business to securely expand its geographical footprint.

Expanding into new geographic areas benefits from the scalability and flexibility of a SASE solution, which can deliver consistent security globally without requiring physical appliances at each location.

Key Takeaways:

On-premises solutions are ideal for geographically concentrated networks with minimal cloud adoption.

SASE is better suited for hybrid work, cloud adoption, and distributed networks.

Understanding the Problem:

The issue is that Advanced Threat Prevention (ATP) logs are visible on the firewall but are not being ingested into the company’s SIEM.

This implies that the ATP subscription is working and generating logs on the firewall but the logs are not being forwarded properly to the SIEM.

Action to Resolve:

Log Forwarding Configuration:

Verify that the Security policy rules configured to inspect traffic using Advanced Threat Prevention are set to forward logs to the SIEM instance.

This is a common oversight. Even if the logs are generated locally, they will not be forwarded unless explicitly configured.

Configuration steps to verify in the Palo Alto Networks firewall:

Go to Policies > Security Policies and check the "Log Forwarding" profile applied.

Ensure the "Log Forwarding" profile includes the correct settings to forward Threat Logs to the SIEM.

Go to Device > Log Settings and ensure the firewall is set to forward Threat logs to the desired Syslog or SIEM destination.

Why Not the Other Options?

A (Enable the Threat Prevention license):

The problem does not relate to the license; the administrator already confirmed the license is active.

B (Check with the SIEM vendor):

While verifying SIEM functionality is important, the first step is to ensure the logs are being forwarded correctly from the firewall to the SIEM. This is under the systems administrator’s control.

C (Have the SIEM vendor troubleshoot):

This step should only be taken after confirming the logs are forwarded properly from the firewall.

References from Palo Alto Networks Documentation:

Log Forwarding and Security Policy Configuration

Advanced Threat Prevention Configuration Guide

Protecting web servers from advanced threats like SQL injection, command injection, XSS attacks, and IIS exploits requires a solution capable of deep packet inspection, behavioral analysis, and inline prevention of zero-day attacks. The most effective solution here is Advanced Threat Prevention (ATP) combined with PAN-OS 11.x.

Why "Advanced Threat Prevention and PAN-OS 11.x" (Correct Answer B)?Advanced Threat Prevention (ATP) enhances traditional threat prevention by using inline deep learning models to detect and block advanced zero-day threats, including SQL injection, command injection, and XSS attacks. With PAN-OS 11.x, ATP extends its detection capabilities to detect unknown exploits without relying on signature-based methods. This functionality is critical for protecting web servers in scenarios where a dedicated WAF is unavailable.

ATP provides the following benefits:

Inline prevention of zero-day threats using deep learning models.

Real-time detection of attacks like SQL injection and XSS.

Enhanced protection for web server platforms like IIS.

Full integration with the Palo Alto Networks Next-Generation Firewall (NGFW).

Why not "Threat Prevention and PAN-OS 11.x" (Option A)?Threat Prevention relies primarily on signature-based detection for known threats. While it provides basic protection, it lacks the capability to block zero-day attacks using advanced methods like inline deep learning. For zero-day SQL injection and XSS attacks, Threat Prevention alone is insufficient.

Why not "Threat Prevention, Advanced URL Filtering, and PAN-OS 10.2 (and higher)" (Option C)?While this combination includes Advanced URL Filtering (useful for blocking malicious URLs associated with exploits), it still relies on Threat Prevention, which is signature-based. This combination does not provide the zero-day protection needed for advanced injection attacks or XSS vulnerabilities.

Why not "Advanced WildFire and PAN-OS 10.0 (and higher)" (Option D)?Advanced WildFire is focused on analyzing files and executables in a sandbox environment to identify malware. While it is excellent for identifying malware, it is not designed to provide inline prevention for web-based injection attacks or XSS exploits targeting web servers.

When preparing for a customer meeting, it’s important to understand their specific challenges and align solutions accordingly. The notes suggest that the customer is facing difficulties securing their cloud apps and remote users, which are core areas addressed by Palo Alto Networks’ Zero Trust and SASE solutions. However, jumping directly into a pitch or product demonstration without validating the customer's specific challenges may fail to build trust or fully address their needs.

Option A: Leading with a pre-structured pitch about Zero Trust principles may not resonate with the customer if their challenges are not fully understood first. The team needs to gather insights into the customer's security pain points before presenting a solution.

Option B (Correct): Discovery questions are a critical step in the sales process, especially when addressing complex topics like Zero Trust. By designing targeted questions about the customer’s challenges with identity, devices, data, and access, the SE can identify specific pain points. These insights can then be used to tailor a Zero Trust strategy that directly addresses the customer’s concerns. This approach ensures the meeting is customer-focused and demonstrates that the SE understands their unique needs.

Option C: While a product demonstration of GlobalProtect, Prisma Access, and SaaS security is valuable, it should come after discovery. Presenting products prematurely may seem like a generic sales pitch and could fail to address the customer’s actual challenges.

Option D: Prisma SASE is an excellent solution for addressing cloud security and remote user challenges, but recommending it without first understanding the customer’s specific needs may undermine trust. This step should follow after discovery and validation of the customer’s pain points.

Examples of Discovery Questions:

What are your primary security challenges with remote users and cloud applications?

Are you currently able to enforce consistent security policies across your hybrid environment?

How do you handle identity verification and access control for remote users?

What level of visibility do you have into traffic to and from your cloud applications?

The PA-400 Series is the most cost-efficient Palo Alto Networks NGFW for small branch offices. Let’s analyze the options:

PA-400 Series (Recommended Option)

The PA-400 Series (PA-410, PA-415, etc.) is specifically designed for small to medium-sized branch offices with fewer than 50 users.

It provides all the necessary security features, including Advanced Threat Prevention, at a lower price point compared to higher-tier models.

It supports PAN-OS and Cloud-Delivered Security Services (CDSS), making it suitable for securing internet traffic at branch locations.

Why Other Options Are Incorrect

PA-200: The PA-200 is an older model and is no longer available. It lacks the performance and features needed for modern branch office security.

PA-500: The PA-500 is also an older model that is not as cost-efficient as the PA-400 Series.

PA-600: The PA-600 Series does not exist.

Key Takeaways:

For branch offices with fewer than 50 users, the PA-400 Series offers the best balance of cost and performance.

5G Security (Answer A):

In this scenario, the mining company operates on a private mobile network, likely powered by 5G technology to ensure low latency and high bandwidth for controlling robots and vehicles.

Palo Alto Networks 5G Security is specifically designed to protect private mobile networks. It prevents exploitation of vulnerabilities in the 5G infrastructure and ensures the control signals sent to the machines are not compromised by attackers.

Key features include network slicing protection, signaling plane security, and secure user plane communications.

IoT Security (Answer C):

The mining operation depends on machines and remote-controlled vehicles, which are IoT devices.

Palo Alto Networks IoT Security provides:

Full device visibility to detect all IoT devices (such as robots, remote vehicles, or sensors).

Behavioral analysis to create risk profiles and identify anomalies in the machines' operations.

This ensures a secure environment for IoT devices, reducing the risk of a device being exploited.

Why Not Cloud NGFW (Answer B):

While Cloud NGFW is critical for protecting cloud-based applications, the specific concern here is protecting control signals and IoT devices rather than external access into the cloud service.

The private mobile network and IoT device protection requirements make 5G Security and IoT Security more relevant.

Why Not Advanced CDSS Bundle (Answer D):

The Advanced CDSS bundle (Advanced Threat Prevention, Advanced WildFire, Advanced URL Filtering) is essential for securing web traffic and detecting threats, but it does not address the specific challenges of securing private mobile networks and IoT devices.

While these services can supplement the design, they are not the primary focus in this use case.

References from Palo Alto Networks Documentation:

5G Security for Private Mobile Networks

IoT Security Solution Brief

Cloud NGFW Overview

When high traffic from Palo Alto Networks NGFWs to Active Directory servers causes performance issues, optimizing the way NGFWs gather user-to-IP mappings is critical. Palo Alto Networks offers multiple ways to collect user identity information, and Cloud Identity Engine provides a solution that reduces the load on AD servers while still ensuring efficient and accurate mapping.

Option A (Correct): Cloud Identity Engine allows NGFWs to gather user-to-IP mappings directly from Active Directory authentication logs or other identity sources without placing heavy traffic on the AD servers. By leveraging this feature, the NGFW can offload authentication-related tasks and efficiently identify users without overloading AD servers. This solution is scalable and minimizes the overhead typically caused by frequent User-ID queries to AD servers.

Option B: Using GlobalProtect Windows SSO to gather user information can add complexity and is not the most efficient solution for this problem. It requires all users to install GlobalProtect agents, which may not be feasible in all environments and can introduce operational challenges.

Option C: Data redistribution involves redistributing user-to-IP mappings from one NGFW (hub) to other NGFWs (spokes). While this can reduce the number of queries sent to AD servers, it assumes the mappings are already being collected from AD servers by the hub, which means the performance issue on the AD servers would persist.

Option D: Using GlobalProtect agents to gather user information is a valid method for environments where GlobalProtect is already deployed, but it is not the most efficient or straightforward solution for the given problem. It also introduces dependencies on agent deployment, configuration, and management.

How to Implement Cloud Identity Engine for User-ID Mapping:

Enable Cloud Identity Engine from the Palo Alto Networks console.

Integrate the Cloud Identity Engine with the AD servers to allow it to retrieve authentication logs directly.

Configure the NGFWs to use the Cloud Identity Engine for User-ID mappings instead of querying the AD servers directly.

Monitor performance to ensure the AD servers are no longer overloaded, and mappings are being retrieved efficiently.

Advanced DNS Security on Palo Alto Networks firewalls is designed to identify and prevent a wide range of DNS-based attacks. Among the listed options, "High entropy DNS domains" is a specific example of a DNS attack that Advanced DNS Security can detect and block.

Why "High entropy DNS domains" (Correct Answer A)?High entropy DNS domains are often used in attacks where randomly generated domain names (e.g., gfh34ksdu.com) are utilized by malware or bots to evade detection. This is a hallmark of Domain Generation Algorithms (DGA)-based attacks. Palo Alto Networks firewalls with Advanced DNS Security use machine learning to detect such domains by analyzing the entropy (randomness) of DNS queries. High entropy values indicate the likelihood of a dynamically generated or malicious domain.

Why not "Polymorphic DNS" (Option B)?While polymorphic DNS refers to techniques that dynamically change DNS records to avoid detection, it is not specifically identified as an attack type mitigated by Advanced DNS Security in Palo Alto Networks documentation. The firewall focuses more on the behavior of DNS queries, such as detecting DGA domains or anomalous DNS traffic patterns.

Why not "CNAME cloaking" (Option C)?CNAME cloaking involves using CNAME records to redirect DNS queries to malicious or hidden domains. Although Palo Alto firewalls may detect and block malicious DNS redirections, the focus of Advanced DNS Security is primarily on identifying patterns of DNS abuse like DGA domains, tunneling, or high entropy queries.

Why not "DNS domain rebranding" (Option D)?DNS domain rebranding involves changing the domain names associated with malicious activity to evade detection. This is typically a tactic used for persistence but is not an example of a DNS attack type specifically addressed by Advanced DNS Security.

Advanced DNS Security focuses on dynamic, real-time identification of suspicious DNS patterns, such as high entropy domains, DNS tunneling, or protocol violations. High entropy DNS domains are directly tied to attack mechanisms like DGAs, making this the correct answer.

Palo Alto Networks Next-Generation Firewalls (NGFWs) provide robust security features across a variety of use cases. Let’s analyze each option:

A. Code-embedded NGFWs provide enhanced IoT security by allowing PAN-OS code to be run on devices that do not support embedded VM images.

This statement is incorrect. NGFWs do not operate as "code-embedded" solutions for IoT devices. Instead, they protect IoT devices through advanced threat prevention, device identification, and segmentation capabilities.

B. Serverless NGFW code security provides public cloud security for code-only deployments that do not leverage VM instances or containerized services.

This is not a valid use case. Palo Alto NGFWs provide security for public cloud environments using VM-series firewalls, CN-series (containerized firewalls), and Prisma Cloud for securing serverless architectures. NGFWs do not operate in "code-only" environments.

C. IT/OT segmentation firewalls allow operational technology (OT) resources in plant networks to securely interface with IT resources in the corporate network.

This is a valid use case. Palo Alto NGFWs are widely used in industrial environments to provide IT/OT segmentation, ensuring that operational technology systems in plants or manufacturing facilities can securely communicate with IT networks while protecting against cross-segment threats. Features like App-ID, User-ID, and Threat Prevention are leveraged for this segmentation.

D. PAN-OS GlobalProtect gateways allow companies to run malware and exploit prevention modules on their endpoints without installing endpoint agents.

This is incorrect. GlobalProtect gateways provide secure remote access to corporate networks and extend the NGFW’s threat prevention capabilities to endpoints, but endpoint agents are required to enforce malware and exploit prevention modules.

Key Takeaways:

IT/OT segmentation with NGFWs is a real and critical use case in industries like manufacturing and utilities.

The other options describe features or scenarios that are not applicable or valid for NGFWs.