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Free PDF Quiz Updated Palo Alto Networks - NetSec-Analyst - Palo Alto Networks Network Security Analyst Test Dumps Demo

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Palo Alto Networks Network Security Analyst Sample Questions (Q118-Q123):

NEW QUESTION # 118
A Palo Alto Networks firewall is configured with User-ID and integrated with Active Directory. The network team reports that users from the 'Guest Wi-Fi' network are occasionally accessing internal resources. The current security policy allows 'Guest_Wi-Fi' users only to specific internet sites. Investigation reveals that the Guest Wi-Fi SSID is configured to assign IPs from a different subnet than the corporate network, but the User-ID mapping is still showing internal corporate users mapped to some Guest Wi-Fi IPs due to cached logins or session sharing. How would you prevent 'Guest_Wi-Fi' users, regardless of their User-ID mapping, from accessing internal resources while maintaining their internet access?

A. Create a new Security Policy rule with Source Zone: Guest_Zone, Source User: any, Destination Zone: Internal_Zone, Action: deny. Place this rule above all other internal access rules.
B. Configure a User-ID exclusion list for the Guest_Wi-Fi subnet to prevent any User-ID mappings for those IPs, then create a deny rule for Guest_Zone to Internal Zone.
C. Create a new Security Policy rule with Source Zone: Guest_Zone, Source Address: Guest_Wi-Fi_Subnet, Source User: any, Destination Zone: Internal_Zone, Action: deny. Place this rule with the highest priority.
D. Modify the existing rules for 'Guest_Wi-Fi' internet access by adding Destination Zone: Untrust and ensuring no rules allow Guest_Wi-Fi to Internal_Zone. Clear User-ID cache periodically.
E. Implement an explicit Policy-Based Forwarding (PBF) rule for the Guest_Wi-Fi subnet to route all traffic directly to the internet, bypassing security policy evaluation for internal destinations.

Answer: C

Explanation:
Option C is the most direct and effective solution. By creating a deny rule that specifies the 'Guest_Zone' as the source zone and the 'Guest_Wi-Fi_Subnet' as the source address, you explicitly block any traffic originating from that subnet from reaching the 'Internal_Zone', irrespective of any potentially incorrect User-ID mappings. Placing this rule with the highest priority ensures it's evaluated first. User-ID cache issues or session sharing can lead to incorrect user mappings, so relying solely on User-ID in this specific cross-zone scenario can be problematic. Option D could work but is more complex than needed for this specific problem. Option E would bypass security policies entirely and isn't a policy-based solution. Option A is less precise as it doesn't explicitly use the source address. Option B relies on clearing cache, which is reactive and not a preventative policy.

NEW QUESTION # 119
A Palo Alto Networks firewall is reporting consistently high data plane CPU utilization (around 80-90%), but the management plane CPU remains low. Users are experiencing intermittent packet loss and application latency. You suspect a large volume of specific traffic types or signatures are consuming resources. Which of the following steps would be most effective in identifying the specific traffic causing the high data plane utilization?

A. Execute debug flow basic on the CLI for a problematic source IP to trace packet flow.
B. Utilize the ACC (Application Command Center) to filter for 'Top Applications' and 'Top Threats' over the last hour.
C. Enable packet capture on the firewall for all interfaces and analyze the pcap file using Wireshark.
D. Check the BFD (Bidirectional Forwarding Detection) status for all configured interfaces.
E. Run show session all filter application for known high-bandwidth applications.

Answer: B

Explanation:
High data plane CPU with low management plane CPU points to traffic processing issues. The ACC (Application Command Center) is the primary graphical interface tool for gaining immediate visibility into 'Top Applications', 'Top Threats', 'Top Users', and 'Top URLs'. This allows for quick identification of what traffic is consuming the most resources and potentially causing the high data plane CPU. Option A requires knowing the application beforehand. Option B is resource-intensive and provides raw packet data, not immediate high-level insights into resource consumption. Option D is for specific packet flow debugging. Option E is for link health, not CPU utilization by traffic.

NEW QUESTION # 120
A publicly accessible web application is frequently targeted by HTTP GET floods and slow-read attacks. The existing DoS protection profile on the Palo Alto Networks firewall is configured with generic thresholds, leading to false positives and occasional legitimate user disruptions. The security team wants to refine the DoS protection to specifically counter these HTTP-based attacks while minimizing impact on legitimate users. Which of the following combinations of DoS protection profile settings and their application would be most effective?

A. Implement 'Session Based Attack Protection' for 'HTTP Flood' with 'Max Concurrent Sessions' and 'Session Rate' thresholds, and use 'Action: Block' for sources exceeding limits.
B. Enable 'HTTP Flood' protection with 'Per-Request Rate' and 'Per-Source IP Rate' thresholds, combined with 'Per-URL Rate' for critical URLs, and set 'Action: Drop' for exceeding thresholds.
C. Configure 'HTTP Flood' protection with a 'Per-Request Rate' and 'Per-Source IP Rate' threshold, setting 'Action: Syn-Cookie' to challenge suspicious HTTP requests.
D. Utilize 'Slow HTTP Protection' with 'Client Header Timeout' and 'Client Read Timeout' set to aggressive values (e.g., 5 seconds), and 'Action: Reset' for non-compliant sessions.
E. Both B and D.

Answer: E

Explanation:
The scenario describes two distinct HTTP-based attacks: GET floods and slow-read attacks. HTTP GET floods are best mitigated by rate-limiting on a per-request, per-source IP, and potentially per-URL basis, making 'HTTP Flood' protection with 'Per-Request Rate', 'Per-Source IP Rate', and 'Per-URL Rate' (Option B) highly effective. Slow-read attacks, where an attacker slowly consumes the response to tie up server resources, are specifically addressed by 'Slow HTTP Protection' using 'Client Header Timeout' and 'Client Read Timeout' (Option D). Combining both B and D provides comprehensive protection against both types of HTTP attacks mentioned, making E the correct choice.

NEW QUESTION # 121
A Palo Alto Networks firewall is configured to protect a DMZ segment hosting multiple web servers. The security team wants to implement a 'positive security model' for application control and threat prevention. This means explicitly allowing only known good applications and blocking everything else, coupled with comprehensive threat inspection for allowed traffic. They also need to ensure that any attempt to use deprecated or high-risk applications (even if 'allowed' by a broader rule earlier) is blocked. How do you structure the Security Policy Rules and Security Profiles to achieve this stringent positive security posture?

A. Create an 'Application Filter' for 'known-good-apps' and another for 'high-risk-apps'. Create a security policy rule allowing 'known-good-apps' to the DMZ with a full Security Profile Group. Above this, create a security policy rule blocking 'high-risk-apps' from untrust to DMZ, with logging only. Below all specific rules, have a 'deny all' rule.
B. Create a security policy rule allowing only specific 'known good' applications (e.g., web-browsing, ssl) from the untrust zone to the DMZ, with a comprehensive Security Profile Group (Antivirus, Anti-Spyware, Vulnerability Protection, URL Filtering). Below this, create a 'deny all' rule with no applications specified. This is sufficient for a positive security model.
C. Create a security policy rule allowing specific 'known good' applications from untrust to DMZ. Apply a Security Profile Group with Antivirus, Anti-Spyware, Vulnerability Protection, and WildFire. Configure App-ID 'Block' on known high-risk applications (e.g., 'bittorrent', 'tor') within the Application Filter, ensuring these are globally blocked. The final rule should be a 'deny any'.
D. Create a security policy rule allowing 'web-browsing' and 'SSI' applications from untrust to DMZ, applying a comprehensive Security Profile Group. Create a second security policy rule specifically blocking applications categorized as 'network-utility' or 'file-sharing' or 'proxy-avoidance', positioned above the 'allow' rule. Ensure a 'deny all' rule at the very bottom of the policy.
E. Define explicit security policy rules for each 'known good' application or application group (e.g., 'web-browsing' to web servers, 'ssh' to jump hosts). To each of these 'allow' rules, apply a Security Profile Group containing Antivirus, Anti-Spyware, Vulnerability Protection (with 'strict' profiles), and URL Filtering. Below these allow rules, create a 'negative' security rule that explicitly blocks 'risk-apps' application filter and 'high-risk' application characteristics. The very last rule should be a 'deny any' rule.

Answer: E

Explanation:
Option C is the most accurate and robust implementation of a positive security model with additional controls for high-risk applications. Explicit 'Allow' Rules: Defining specific rules for each 'known good' application or group, with comprehensive Security Profile Groups attached, ensures only sanctioned traffic enters the DMZ and is thoroughly inspected. 'Negative' Security Rule (Block 'risk-apps' filter): This is critical for preventing deprecated or high-risk applications. By placing this rule below the explicit 'allow' rules, it acts as a last line of defense against unwanted applications that might somehow bypass an App-ID-based 'allow' or if a new application falls into the 'risk-apps' category. This ensures a double-check. 'Deny Any' as the last rule: This is the foundational element of a positive security model, ensuring anything not explicitly allowed is blocked. Options A and B rely solely on the initial 'allow' or global App-ID blocking, which may not catch all 'deprecated/high-risk' scenarios in a dynamic environment. Options D and E's rule order for blocking high-risk apps might prevent the logging and specific enforcement desired if placed above all 'allow' rules, and doesn't leverage the granular blocking of 'risk-apps' through filters as effectively as C.

NEW QUESTION # 122
A global financial institution utilizes Strata Cloud Manager (SCM) to manage thousands of Palo Alto Networks firewalls. Due to strict regulatory compliance requirements (e.g., PCI DSS, GDPR), they need to ensure that all policy changes are peer-reviewed and logged with detailed audit trails. Furthermore, they want to automate the rollback of any erroneous policy deployments. Which SCM features, combined with external processes, would best achieve these objectives?

A. Integrated SD-WAN orchestration and Prisma Access integration.
B. Device telemetry forwarding and advanced threat intelligence feeds.
C. Granular RBAC, Audit Logs, Configuration Revision History, and API-driven rollback capabilities.
D. Cloud-Delivered Security Services (CDSS) and threat prevention signatures.
E. Zero Touch Provisioning (ZTP) and Application-ID.

Answer: C

Explanation:
This scenario requires robust change management and auditing. Granular RBAC ensures that only authorized personnel can make changes, and that changes are initiated by specific roles. SCM's Audit Logs provide an immutable record of all administrative actions and policy changes. The Configuration Revision History allows viewing and reverting to previous configurations. For automated rollback, SCM's API (Application Programming Interface) can be used to programmatically trigger rollbacks of configurations, integrating with external change management or orchestration systems. This combination addresses the compliance and automation requirements.

NEW QUESTION # 123
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