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Palo Alto Networks Systems Engineer Professional - Hardware Firewall PSE-Strata-Pro-24 Prüfungsfragen mit Lösungen (Q61-Q66):
61. Frage
When a customer needs to understand how Palo Alto Networks NGFWs lower the risk of exploitation by newly announced vulnerabilities known to be actively attacked, which solution and functionality delivers the most value?
Antwort: A
Begründung:
The most effective way to reduce the risk of exploitation bynewly announced vulnerabilitiesis through Advanced Threat Prevention (ATP). ATP usesinline deep learningto identify and block exploitation attempts, even for zero-day vulnerabilities, in real time.
* Why "Advanced Threat Prevention's command injection and SQL injection functions use inline deep learning against zero-day threats" (Correct Answer B)?Advanced Threat Prevention leverages deep learning modelsdirectly in the data path, which allows it to analyze traffic in real time and detect patterns of exploitation, including newly discovered vulnerabilities being actively exploited in the wild.
It specifically targets advanced tactics like:
* Command injection.
* SQL injection.
* Memory-based exploits.
* Protocol evasion techniques.
This functionality lowers the risk of exploitation byactively blocking attack attemptsbased on their behavior, even when a signature is not yet available. This approach makes ATP the most valuable solution for addressing new and actively exploited vulnerabilities.
* Why not "Advanced URL Filtering uses machine learning (ML) to learn which malicious URLs are being utilized by the attackers, then block the resulting traffic" (Option A)?While Advanced URL Filtering is highly effective at blocking access to malicious websites, it does not provide the inline analysis necessary to prevent direct exploitation of vulnerabilities. Exploitation often happens within the application or protocol layer, which Advanced URL Filtering does not inspect.
* Why not "Single Pass Architecture and parallel processing ensure traffic is efficiently scanned against any enabled Cloud-Delivered Security Services (CDSS) subscription" (Option C)?Single Pass Architecture improves performance by ensuring all enabled services (like Threat Prevention, URL Filtering, etc.) process traffic efficiently. However, it is not a feature that directly addresses vulnerability exploitation or zero-day attack detection.
* Why not "WildFire loads custom OS images to ensure that the sandboxing catches anyactivity that would affect the customer's environment" (Option D)?WildFire is a sandboxing solution designed to detect malicious files and executables. While it is useful for analyzing malware, it does not provide inline protection against exploitation of newly announced vulnerabilities, especially those targeting network protocols or applications.
62. Frage
A customer asks a systems engineer (SE) how Palo Alto Networks can claim it does not lose throughput performance as more Cloud-Delivered Security Services (CDSS) subscriptions are enabled on the firewall.
Which two concepts should the SE explain to address the customer's concern? (Choose two.)
Antwort: A,D
Begründung:
The customer's question focuses on how Palo Alto Networks Strata Hardware Firewalls maintain throughput performance as more Cloud-Delivered Security Services (CDSS) subscriptions-such as Threat Prevention, URL Filtering, WildFire, DNS Security, and others-are enabled. Unlike traditional firewalls where enabling additional security features often degrades performance, Palo Alto Networks leverages its unique architecture to minimize this impact. The systems engineer (SE) should explain two key concepts-Parallel Processing andSingle Pass Architecture-which are foundational to the firewall's ability to sustain throughput. Below is a detailed explanation, verified against Palo Alto Networks documentation.
Step 1: Understanding Cloud-Delivered Security Services (CDSS) and Performance Concerns CDSS subscriptions enhance the Strata Hardware Firewall's capabilities by integrating cloud-based threat intelligence and advanced security features into PAN-OS. Examples include:
* Threat Prevention: Blocks exploits, malware, and command-and-control traffic.
* WildFire: Analyzes unknown files in the cloud for malware detection.
* URL Filtering: Categorizes and controls web traffic.
Traditionally, enabling such services on other firewalls increases processing overhead, as each feature requires separate packet scans or additional hardware resources, leading to latency and throughput loss. Palo Alto Networks claims consistent performance due to its innovative design, rooted in theSingle Pass Parallel Processing (SP3)architecture.
63. Frage
Which three use cases are specific to Policy Optimizer? (Choose three.)
Antwort: A,C,E
Begründung:
The question asks for three use cases specific to Policy Optimizer, a feature in PAN-OS designed to enhance security policy management on Palo Alto Networks Strata Hardware Firewalls. Policy Optimizer helps administrators refine firewall rules by leveraging App-ID technology, transitioning from legacy port-based policies to application-based policies, and optimizing rule efficiency. Below is a detailed explanation of why options A, C, and E are the correct use cases, verified against official Palo Alto Networks documentation.
Step 1: Understanding Policy Optimizer in PAN-OS
Policy Optimizer is a tool introduced in PAN-OS 9.0 and enhanced in subsequent versions (e.g., 11.1), accessible under Policies > Policy Optimizer in the web interface. It analyzes traffic logs to:
* Identify applications traversing the network.
* Suggest refinements to security rules (e.g., replacing ports with App-IDs).
* Provide insights into rule usage and optimization opportunities.
Its primary goal is to align policies with Palo Alto Networks' application-centric approach, improving security and manageability on Strata NGFWs.
64. Frage
A prospective customer is concerned about stopping data exfiltration, data infiltration, and command-and- control (C2) activities over port 53.
Which subscription(s) should the systems engineer recommend?
Antwort: B
Begründung:
* DNS Security (Answer C):
* DNS Securityis the appropriate subscription for addressingthreats over port 53.
* DNS tunneling is a common method used fordata exfiltration, infiltration, and C2 activities, as it allows malicious traffic to be hidden within legitimate DNS queries.
* The DNS Security service appliesmachine learning modelsto analyze DNSqueries 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 addressDNS-based tunnelingor 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 blockingDNS tunnelingor 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 theDNS Security subscription, which specializes in DNS-layer threats.
References from Palo Alto Networks Documentation:
* DNS Security Subscription Overview
65. Frage
In addition to DNS Security, which three Cloud-Delivered Security Services (CDSS) subscriptions are minimum recommendations for all NGFWs that handle north-south traffic? (Choose three)
Antwort: A,B,E
Begründung:
North-south traffic refers to the flow of data in and out of a network, typically between internal resources and the internet. To secure this type of traffic, Palo Alto Networks recommends specific CDSS subscriptions in addition to DNS Security:
A: SaaS Security
SaaS Security is designed for monitoring and securing SaaS application usage but is not essential for handling typical north-south traffic.
B: Advanced WildFire
Advanced WildFire provides cloud-based malware analysis and sandboxing to detect and block zero-day threats. It is a critical component for securing north-south traffic against advanced malware.
C: Enterprise DLP
Enterprise DLP focuses on data loss prevention, primarily for protecting sensitive data. While important, it is not a minimum recommendation for securing north-south traffic.
D: Advanced Threat Prevention
Advanced Threat Prevention (ATP) replaces traditional IPS and provides inline detection and prevention of evasive threats in north-south traffic. It is a crucial recommendation for protecting against sophisticated threats.
E: Advanced URL Filtering
Advanced URL Filtering prevents access to malicious or harmful URLs. It complements DNS Security to provide comprehensive web protection for north-south traffic.
Key Takeaways:
* Advanced WildFire, Advanced Threat Prevention, and Advanced URL Filtering are minimum recommendations for NGFWs handling north-south traffic, alongside DNS Security.
* SaaS Security and Enterprise DLP, while valuable, are not minimum requirements for this use case.
References:
* Palo Alto Networks NGFW Best Practices
* Cloud-Delivered Security Services
66. Frage
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