Palo Alto Networks NGFW-Engineer Exam Questions Instant Access

Question 1

A network architect is planning the deployment of a new IPSec VPN tunnel to connect a local data center to a cloud environment. The plan must include all necessary Security policy configurations for both tunnel negotiation and data transit.

Which two Security policy requirements must be included in the implementation plan? (Choose two answers)

AThe default interzone-default security policy is sufficient to allow the tunnel negotiation traffic between the firewall and the remote peer.

BA pair of policies is required to control the flow of data traffic into and out of the security zone assigned to the tunnel interface.

CA policy must explicitly permit only the IKE application between the external-facing zone and local zone.

DA policy must explicitly permit the IPSec container application between the external-facing zone and local zone.

Answer : B, D

To successfully implement an IPSec VPN on a Palo Alto Networks NGFW, the security architect must account for two distinct types of traffic: Control Plane (tunnel negotiation) and Data Plane (traffic through the tunnel).

First, for the tunnel to establish, the firewall must permit negotiation traffic. While IKE (UDP 500/4500) is the protocol used, Palo Alto Networks uses the IPSec container application to represent the underlying encrypted tunnel traffic. This traffic is typically destined for the firewall's own 'Local' zone (the management/loopback or physical interface IP). Therefore, a policy must exist to allow the ipsec-esp-udp or the broader IPSec application between the external-facing zone and the Local zone.

Second, once the tunnel is active, the decrypted traffic emerges from the Tunnel Interface. This interface must be assigned to a security zone (often a dedicated 'VPN' zone or an existing internal zone). Because the NGFW is a stateful, zone-based firewall, the interzone-default policy is 'Deny' by default. Consequently, a pair of security policies is required to allow data to flow: one for traffic entering the tunnel (e.g., Trust to VPN) and one for traffic exiting the tunnel (e.g., VPN to Trust).

Without these specific rules, the tunnel may show as 'Up' (Phase 1 and 2 complete), but no production data will pass through it.

Question 2

A firewall administrator needs to configure a new Palo Alto Networks firewall so that its management interface automatically obtains an IP address, netmask, and default gateway from the network.

Which command should be executed in the CLI to accomplish this goal?

Aset deviceconfig system interface mgt mode dhcp

Bset network interface management dhcp enable

Cset deviceconfig system type dhcp-client

Dconfigure system management-interface ip dynamic

Answer : C

Question 3

A government agency needs to ensure that all user web access is explicitly mediated and authenticated.

The agency has the following requirements:

* Client browsers must be manually configured to send traffic to the firewall's IP address and a specific port.

* The firewall must support seamless single sign-on (SSO) with the users' existing Active Directory credentials.

Which feature set should the engineer configure to meet the agency's requirements?

AWeb proxy in explicit mode with an Authentication policy by using Kerberos

BDecryption policy that redirects users to a SAML identity provider for authentication

CWeb proxy in transparent mode with an Authentication policy by using multi-factor authentication (MFA)

DUser-ID agent integration with Authentication Portal for authentication

Answer : A

Question 4

Which two Palo Alto Networks firewall services are secured by attaching an SSL/TLS service profile to their configuration? (Choose two.)

AAuthentication portal

BGlobalProtect portal

CLDAP server profiles

DPrisma Access service connections

Answer : A, B

Question 5

A network security engineer at a 24/7 online retailer is upgrading an active/passive high availability (HA) cluster of PAN-OS firewalls. The primary goal is to perform the upgrade with no service interruption to online transactions. The engineer has already downloaded the new software to both devices.

Which sequence of actions will meet this requirement?

AFrom Panorama, create a scheduled software update job targeting both firewalls in the HA pair to run at the same time, then rely on the HA election process to manage the failover automatically.

BUpgrade the passive firewall first while it is still in the passive state. Once it reboots and is operational, suspend the active firewall to fail over to the newly upgraded device. Then, upgrade the remaining firewall.

CForce the active firewall into a suspended state to trigger a failover, then upgrade and reboot it. Suspend the currently active firewall to fail traffic back to the upgraded unit. Upgrade the remaining firewall.

DDisable HA synchronization on the active firewall, upgrade the passive firewall, and then re-enable synchronization. Once synchronized, repeat the process on the other firewall.

Answer : C

Question 6

A network security engineer is reviewing the dynamic update settings for a fleet of firewalls in a financial institution that has a policy prioritizing operational stability above all else. The engineer notes that the current content update threshold is set to 24 hours.

Following the Palo Alto Networks recommended best practices for mission-critical deployments, which adjustment should be made to the threshold?

AChange to 'download only' and schedule manual installation.

BIncrease to 48 hours.

CDecrease to 12 hours.

DReset to reconfirm 24 hours.

Answer : B

Question 7

An network engineer is configuring SSL Forward Proxy decryption on a Palo Alto Networks firewall. The company's internal clients trust a corporate root certificate authority (CA). To ensure the firewall can properly validate the certificates of external web servers, the engineer must configure a specific component.

Which component defines the mechanism for Online Certificate Status Protocol (OCSP) / certificate revocation list (CRL) status?

ACertificate revocation checking

BSSL/TLS service profile

CDecryption profile

DForward trust certificate

Answer : C

In a Palo Alto Networks SSL Forward Proxy deployment, the Decryption Profile is the primary policy component used to control how the firewall handles various technical aspects of the decryption process. While the SSL Forward Proxy itself uses a Forward Trust Certificate to resign certificates for the client, the firewall must first perform its own due diligence on the server-side certificate received from the external web server.

The Decryption Profile allows the administrator to define granular security checks for the session. Specifically, within the SSL Decryption Settings tab of the profile, there are options for 'Certificate Revocation Checking.' Here, the engineer can enable and define how the firewall performs Online Certificate Status Protocol (OCSP) and Certificate Revocation List (CRL) checks. These mechanisms are used to verify that the external server's certificate has not been revoked by its issuing CA before the firewall proceeds with the decryption and re-signing process.

Failure to configure these settings within the Decryption Profile would mean the firewall might trust and proxy a connection to an external site that has a technically valid but revoked certificate, creating a significant security hole. Unlike an SSL/TLS Service Profile (which is used for traffic terminating at the firewall) or the Forward Trust Certificate (used for the client-side trust), the Decryption Profile specifically dictates the validation behavior for outgoing proxied sessions.

Palo Alto Networks Next-Generation Firewall Engineer NGFW-Engineer Exam Questions