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To non-disruptively monitor traffic coming from a port operating in promiscuous mode, the appropriate firewall interface type is:

D.TAP

A TAP (Test Access Point) interface allows the firewall to passively monitor network traffic without interfering with the actual flow of traffic. It is used to capture and analyze traffic for inspection, logging, and threat detection.

References:

Palo Alto Networks - TAP Mode: https://docs.paloaltonetworks.com/pan-os/10-0/pan-os-admin/networking/network-interface-configurations/tap-mode

Disabling App-IDs as part of a content update can be valid in the following circumstances:

B.When you want to immediately benefit from the latest threat prevention: Disabling certain App-IDs can help ensure that the latest threat prevention measures are applied without waiting for the App-IDs to be fully tested in a specific environment. This can be crucial in quickly addressing emerging threats.

D.When an organization operates a mission-critical network and has zero tolerance for downtime: In such environments, administrators might temporarily disable new or modified App-IDs to avoid potential disruptions caused by unverified or untested App-IDs. This ensures that the network remains stable and functional while the new App-IDs are evaluated in a controlled manner.

References:

Palo Alto Networks - Best Practices for Application and Threat Content Updates: https://docs.paloaltonetworks.com/pan-os/10-0/pan-os-admin/app-id/manage-app-id/application-and-threat-content-updates

Palo Alto Networks - Application and Threat Content Release Notes: https://docs.paloaltonetworks.com/pan-os/10-0/pan-os-release-notes/application-and-threat-content-release-notes

To load only address objects from a PAN-OS saved configuration file into a VM-300 firewall that is in production, the administrator must follow these three steps:

C.Enter the configuration mode from the CLI: This step is necessary to prepare the firewall to accept the new configuration.

D.Use the load config partial command: This command allows the administrator to load only specific parts of the configuration, such as address objects, from a saved configuration file without overwriting the entire configuration. The command syntax typically looks like this:load config partial from mode merge exclude everything but address objects.

E.Import named configuration snapshot through the web interface: This involves importing the configuration snapshot that contains the address objects through the web interface, but only after ensuring that the specific address objects are targeted and not the entire configuration.

References:

Palo Alto Networks - PAN-OS CLI Quick Start: https://docs.paloaltonetworks.com/pan-os/10-0/pan-os-cli-quick-start

Palo Alto Networks - How to Use the Partial Configuration Load Feature: https://knowledgebase.paloaltonetworks.com

When SSL Forward Proxy decryption is enabled, and clients using Chrome need to see browser warnings for websites with invalid certificates, the following options will satisfy the requirement:

A.Create a Decryption Profile with the Block sessions with expired certificates option enabled: This option ensures that sessions with expired certificates are blocked, which will present a warning to the user.

B.Create a self-signed Forward Untrust enabled certificate: This certificate will be used for websites with invalid or untrusted certificates, prompting the browser to display a warning.

These configurations ensure that users are properly warned when accessing sites with invalid certificates, allowing them to decide whether to proceed.

References:

Palo Alto Networks - SSL Decryption Best Practices: https://docs.paloaltonetworks.com/best-practices

Palo Alto Networks - Configuring SSL Forward Proxy: https://knowledgebase.paloaltonetworks.com

The default port used by the Terminal Services agent to communicate with a Palo Alto Networks firewall is5007. The Terminal Services agent (TS agent) integrates with Microsoft Terminal Services to associate user information with sessions, enabling User-ID to accurately map user identities to security policies. Reference: Palo Alto Networks Terminal Services Agent Documentation.

For a customer who wishes to actively use multiple pathways to the same destination, the recommended routing configuration is:

B.ECMP (Equal-Cost Multi-Path)

ECMP allows the use of multiple paths to the same destination with equal cost metrics, enabling load balancing and redundancy. It is suitable for scenarios where multiple pathways are desired for traffic distribution and fault tolerance.

References:

Palo Alto Networks - ECMP Overview: https://docs.paloaltonetworks.com/pan-os/10-0/pan-os-networking-admin/ecmp

Palo Alto Networks - Configuring ECMP: https://knowledgebase.paloaltonetworks.com

The interface deployments that support the Aggregate Ethernet (AE) Active configuration are:

B.LACP in Layer 3: Link Aggregation Control Protocol (LACP) can be used in Layer 3 interfaces to bundle multiple physical interfaces into a single logical interface for redundancy and increased bandwidth.

C.LACP in Layer 2: LACP can be used in Layer 2 interfaces to aggregate multiple Ethernet interfaces, enhancing throughput and providing failover capabilities within a Layer 2 network.

D.LACP in Virtual Wire: LACP can also be configured in Virtual Wire mode, which allows the firewall to aggregate interfaces while operating in a transparent mode, bridging traffic between interfaces without routing.

These configurations leverage LACP to improve network performance and reliability by combining multiple physical links into a single logical link.

References:

Palo Alto Networks - Aggregate Interfaces: https://docs.paloaltonetworks.com/pan-os/10-0/pan-os-admin/networking/aggregate-ethernet/aggregate-ethernet-overview

Palo Alto Networks - LACP and LLDP Support: https://docs.paloaltonetworks.com/pan-os/10-0/pan-os-admin/networking/aggregate-ethernet/lacp-and-lldp-support