PSE-Strata-Pro-24 Reviews Questions

Synchronizing a large Active Directory (AD) with over 20,000 groups can introduce significant overhead if all groups are synchronized, especially when only a subset of groups (e.g., 1,000 groups) are required for Security policies. The most efficient approach is to configure agroupmapping profile with an include group listto minimize unnecessary synchronization and reduce administrative overhead.

Why "Configure a group mapping profile with an include group list" (Correct Answer C)?Using a group mapping profile with aninclude group listensures that only the required 1,000 groups are synchronized with the firewall. This approach:

Reduces the load on the firewall's User-ID process by limiting the number of synchronized groups.

Simplifies management by focusing on the specific groups relevant to Security policies.

Avoids synchronizing the entire directory (20,000 groups), which would be inefficient and resource-intensive.

Why not "Configure a group mapping profile, without a filter, to synchronize all groups" (Option B)?Synchronizing all 20,000 groups would unnecessarily increase administrative and resource overhead. This approach contradicts the requirement to reduce administrative burden.

Why not "Configure a group mapping profile with custom filters for LDAP attributes that are mapped to the user roles" (Option A)?While filtering LDAP attributes can be useful, this approach is more complex to implement and manage compared to an include group list. It does not directly address the problem of limiting synchronization to a specific subset of groups.

Why not "Configure NGFWs to synchronize with the AD after deploying the Cloud Identity Engine (CIE) and agents" (Option D)?While the Cloud Identity Engine (CIE) is a modern solution for user and group mapping, it is unnecessary in this scenario. A traditional group mapping profile with an include list is sufficient and simpler to implement. CIE is typically used for complex hybrid or cloud environments.

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, andCloud Identity Engineprovides a solution that reduces the load on AD servers while still ensuring efficient and accurate mapping.

Option A (Correct):Cloud Identity Engineallows 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:UsingGlobalProtect Windows SSOto 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 redistributioninvolves 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:UsingGlobalProtect agentsto 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:

EnableCloud Identity Enginefrom 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.

References:

Cloud Identity Engine Overview: https://docs.paloaltonetworks.com/cloud-identity

User-ID Best Practices: https://docs.paloaltonetworks.com

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.

Panorama is Palo Alto Networks’ centralized management solution for managing multiple firewalls. It supports multiple deployment options to suit different infrastructure needs. The valid deployment options are as follows:

Why "As a virtual machine (ESXi, Hyper-V, KVM)" (Correct Answer A)?Panorama can be deployed as a virtual machine on hypervisors like VMware ESXi, Microsoft Hyper-V, and KVM. This is a common option for organizations that already utilize virtualized infrastructure.

Why "With a cloud service provider (AWS, Azure, GCP)" (Correct Answer B)?Panorama is available for deployment in the public cloud on platforms like AWS, Microsoft Azure, and Google Cloud Platform. This allows organizations to centrally manage firewalls deployed in cloud environments.

Why "As a dedicated hardware appliance (M-100, M-200, M-500, M-600)" (Correct Answer E)?Panorama is available as a dedicated hardware appliance with different models (M-100, M-200, M-500, M-600) to cater to various performance and scalability requirements. This is ideal for organizations that prefer physical appliances.

Why not "As a container (Docker, Kubernetes, OpenShift)" (Option C)?Panorama is not currently supported as a containerized deployment. Containers are more commonly used for lightweight and ephemeral services, whereas Panorama requires a robust and persistent deployment model.

Why not "On a Raspberry Pi (Model 4, Model 400, Model 5)" (Option D)?Panorama cannot be deployed on low-powered hardware like Raspberry Pi. The system requirements for Panorama far exceed the capabilities of Raspberry Pi hardware.