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Palo Alto Networks Network Security Analyst Sample Questions:

1. Consider a scenario where your internal development team frequently uses a custom SFTP service running on TCP/2222 for secure file transfers, but Palo Alto Networks App-ID consistently identifies this traffic as 'unknown-tcp' due to variations in the SFTP handshake. You want to ensure that all traffic to and from the internal SFTP server on port 2222 is correctly identified as 'sftp' for accurate logging, threat prevention, and policy enforcement. Which of the following configuration steps would be most effective?

A) Modify the existing security policy to allow 'any' application on port 2222 and rely on threat prevention profiles.
B) Disable Deep Packet Inspection for TCP/2222 traffic to the SFTP server.
C) Create an Application Override policy for source zone 'internal-dev', destination zone 'internal-sftp-server', service 'tcp/2222', and set the application to 'sftp'.
D) Create a custom application signature matching the SFTP handshake and apply it to a security policy.
E) Configure a Service Object for TCP/2222 and add it to the security policy, then enable App-ID on that policy.

2. A cloud-native application leverages multiple dynamically assigned ephemeral ports within a specific range (e.g., TCP/30000-35000) for internal service-to-service communication. Due to the dynamic nature and potential for rapid changes in underlying protocols (Grpc over HTTP/2, custom protobufs), App-ID frequently labels this traffic as 'unknown-tcp' or 'unknown-udp', hindering security visibility. The security team wants to consolidate all traffic within this port range between specific internal subnets (10.0.1.0/24 to 10.0.2.0/24) as a single logical application, 'cloud-microservices', regardless of the underlying protocol, to apply consistent security profiles and logging.
Which of the following approaches is the most appropriate and why?

A) Implement an Application Override policy:

B) Create an Application Filter that groups all 'unknown-tcp' and 'unknown-udp' applications, and apply it to a security policy for the internal subnets.
C) Configure a Service Object for the port range TCP/30000-35000 and UDP/30000-35000, then create security policies that use these service objects without specifying any application.
D) Disable App-ID for the entire 10.0.1.0/24 to 10.0.2.0/24 traffic flow and rely solely on port-based security policies.
E) Develop custom application signatures for each potential protocol (gRPC, protobufs, etc.) within the dynamic port range, and update them regularly.

3. A security analyst is reviewing an SD-WAN profile implemented via Panorama'. They notice an SD-WAN policy rule structured as follows:

Given this configuration, what potential issues or limitations should the analyst be aware of regarding how 'SAP DB' traffic will behave under varying network conditions, and what key components are implicitly assumed or missing for this rule to function optimally?

A) This configuration assumes that 'Path Monitoring' profiles are correctly configured for both 'ethernet1/1. 100' and 'ethernet1/1 .200' to continuously assess their real-time quality metrics against the 'High_Availability_SLA' profile.
B) The 'active-backup' configuration directly specifies interfaces (ethernet1/1. 100, ethernet1/1 .200) instead of SD-WAN links, which might lead to incorrect path selection if these interfaces are part of multiple SD-WAN links.
C) The 'High_Availability_SLA' performance profile must explicitly define 'Good' and 'Bad' thresholds for latency, jitter, and packet loss. If the 'active' path
D) The 'active-backup' selection with 'performance-based' ensures that traffic will only use 'ethernet1/1. 100' until its performance degrades past the SLA. It will not dynamically switch back to 'ethernet1/1. 100' even if it recovers, unless a 'failback' mechanism is configured (which is not explicit here).
E) The 'qos-profile' specified ('High_Priority_QoS') will only apply if bandwidth management policies are also configured on the egress interfaces of the firewall, otherwise it primarily marks traffic but doesn't guarantee bandwidth.

4. An enterprise is planning to automate parts of their Palo Alto Networks security policy lifecycle using a CI/CD pipeline. This involves dynamically creating and updating address objects and security policies based on data from a CMDB. The team wants to use the Panorama API for this purpose. However, they are concerned about the impact of frequent API calls and commits on Panorama's performance, especially considering the large number of firewalls and device groups. What is the most efficient and least impactful strategy for programmatic updates via the Panorama API concerning folders and snippets?

A) Use the 'set' API call for individual object updates within specific Device Group folders, and then execute a single 'commit' operation at the end of the batch process after all changes are applied.
B) Only use the GUI for configuration changes, as API calls are inherently less efficient and more prone to errors for complex operations.
C) Export the full Panorama configuration via API, modify the XML locally, and then re-import the entire configuration using the 'load config override' API call.
D) Leverage 'snippets' (XML fragments) to define the changes, then use the 'load config partial xpath' API call to merge these snippets into the relevant Device Group or Shared folder configuration, followed by a single, consolidated commit.
E) Perform an API call for each object creation/update, followed by an immediate API commit for each change to ensure real-time consistency.

5. A web application development team needs to deploy a new API gateway that uses WebSocket connections for real-time data exchange.
The current Security Policy has a strict rule blocking all 'unknown' or 'incomplete' applications. When testing the API, the WebSocket connections are being reset. Analysis of the traffic logs shows sessions being terminated with 'application-incomplete'. What is the most appropriate action to allow the WebSocket application while maintaining security posture?

A) Create a custom application for the API gateway that identifies WebSocket traffic, and then create a new Security Policy rule allowing this custom application. Use 'application-default' for service.
B) Change the service of the existing block rule from 'application-default' to 'any' to allow all ports.
C) Disable Application Override for the zone where the API gateway resides.
D) Create a new Security Policy rule above the blocking rule, allowing 'web-browsing' and 'SSI' for the API gateway's destination IP, and set service to 'application- default'.
E) Modify the existing block rule to allow 'any' application for the API gateway's destination IP address.

Solutions: