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>> NGFW-Engineer Examcollection Questions Answers <<
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NEW QUESTION # 18
A security administrator is hardening the ingress zone of an NGFW. The goal is to prevent attacks that rely on malformed IP address packets with incorrect header lengths or invalid TCP packets that have both the SYN and FIN flags set. Within which section of a Zone Protection profile should these protections be configured?
Answer: A
Explanation:
In the Palo Alto Networks PAN-OS architecture, aZone Protection Profileprovides the first line of defense against infrastructure-level attacks. It is applied to an entire zone to protect the firewall's resources and the internal network from malicious or malformed traffic before that traffic is even processed by the Security Policy engine.
The specific protections described-detecting malformed IP headers (incorrect header lengths) and invalid TCP flag combinations (such as SYN and FIN set simultaneously, which is logically impossible in standard TCP communications)-fall under thePacket-Based Attack Protectionsection of the profile. This section is further divided into several tabs, includingIP Drop,TCP Drop, andICMP Drop.
* IP Drop:This is where the firewall is configured to discard packets with malformed headers, invalid lengths, or security risks like IP spoofing and fragments.
* TCP Drop:This section handles the "SYN-FIN" check. Setting both flags is a classic technique used by attackers to bypass legacy stateful firewalls or to fingerprint operating systems. By enabling these protections, the NGFW drops these non-compliant packets at the ingress stage.
UnlikeFlood Protection(which mitigates DoS/DDoS attacks by limiting packet rates) orReconnaissance Protection(which detects port scans and host sweeps),Packet-Based Attack Protectionfocuses on the structural integrity and protocol compliance of individual packets entering the interface.
NEW QUESTION # 19
A company deploys an NGFW and notices that several applications running over HTTPS (TCP
443) cannot be accurately identified.
What is the MOST likely reason for this behavior?
Answer: D
Explanation:
Most modern applications use encrypted traffic.
Without SSL/TLS decryption, the NGFW cannot inspect packet payloads, limiting application visibility.
NEW QUESTION # 20
An organization has configured GlobalProtect in a hybrid authentication model using both certificate-based authentication for the pre-logon stage and SAML-based multi-factor authentication (MFA) for user logon.
How does the GlobalProtect agent process the authentication flow on Windows endpoints?
Answer: C
Explanation:
In a hybrid authentication model with both certificate-based authentication for pre-logon and SAML-based multi-factor authentication (MFA) for user logon, the GlobalProtect agent processes the flow as follows:
During the pre-logon stage, the agent uses the machine certificate to authenticate and establish the initial VPN tunnel.
Once the user logs in (after the machine is connected), the agent then triggers SAML-based MFA to ensure the user is authenticated with multi-factor authentication, validating both the device and the user identity before granting full access.
This method ensures that both the device and user are properly authenticated and validated in the hybrid authentication model.
NEW QUESTION # 21
An engineer is troubleshooting a failed inter-VSYS communication path between a DMZ-VSYS and an Internal-VSYS. The configuration includes separate virtual routers with next-vr static routes and appropriate Security policies within each VSYS allowing traffic to and from their external zones.
Given that all routing and policy configurations within each individual VSYS are correct, what is the probable cause of the failure?
Answer: B
Explanation:
Basic Concept: Inter-VSYS communication requires correct external zones, routes, policies, and visibility. If routing and policies are already correct, visibility is the missing enabling step.
Why C is Correct: Visible Virtual System is the probable cause because PAN-OS must know the peer VSYS is visible before the external-zone handoff can work.
Why A is Wrong: Intrazone-default applies to traffic within the same zone. Inter-VSYS traffic uses external zones and explicit policy, so this is not the likely failure when those policies are already correct.
Why B is Wrong: A tunnel interface is not required for inter-VSYS traffic that remains inside the firewall.
The next-vr and external-zone design is the supported model.
Why D is Wrong: External zone type is required, but the scenario already describes traffic to and from external zones with routing and policy correct. The missing element is VSYS visibility.
NEW QUESTION # 22
Which zone type allows traffic between zones in different virtual systems (VSYS), without the traffic leaving the firewall?
Answer: C
Explanation:
The Transient zone type is used to allow traffic between zones in different virtual systems (VSYS) on a Palo Alto Networks firewall without the traffic leaving the firewall. It provides a way for virtual systems to communicate with each other by acting as a temporary or intermediary zone. Traffic can pass through the firewall between the virtual systems without requiring physical interfaces or leaving the device.
NEW QUESTION # 23
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