PCNSE Exam Dumps - Palo Alto Networks Certified Security Engineer (PCNSE) PAN-OS 11.0

The standalone User-ID agent (Option C) offloads user-to-IP mapping to an external server, reducing the firewall’s management CPU usage compared to the integrated agent, which runs on the firewall. Option A is false; neither requires domain membership. Option B is incorrect; the integrated agent uses more resources. Option D is false; the standalone agent can run on any server. The original answer (B) was incorrect, contributing to the 83% Core Concepts score.

In a High Availability (HA) setup with Palo Alto Networks firewalls, the synchronization of IPsec tunnel Security Associations (SAs) is an important aspect to ensure seamless failover and continued secure communication. Specifically, for Phase 2 SAs, they are synchronized over the HA2 links. The HA2 link is dedicated to synchronizing sessions, forwarding tables, IPSec SA, ARP tables, and other critical information between the active and passive firewalls in an HA pair. This ensures that the passive unit can immediately take over in case the active unit fails, without the need for re-establishing IPsec tunnels, thereby maintaining secure communications without interruption. It's important to note that Phase 1 SAs, which are responsible for establishing the secure tunnel itself, are not synchronized between the HA pair, as these need to be re-established upon failover to ensure secure key exchange.

In PAN-OS, the Log Forwarding object under Objects configures forwarding for Authentication (Option B) and User-ID (Option C) logs, among others, to external systems (e.g., syslog servers).

Option A (GlobalProtect) and Option D (WildFire) logs are managed differently (e.g., via profiles or Panorama). Documentation lists supported log types in Log Forwarding.

In Palo Alto Networks firewalls, the processing of NAT rules occurs in a top-down fashion, similar to security policies. To exclude a specific IP address from a broader source NAT rule, a more specific NAT rule must be placed above the broader rule.

C. Place a more specific NAT rule above the broader one:

Create a source NAT rule (NAT-Rule-1) to translate the broader network range (10.0.0.0/23) with dynamic IP and port translation. This rule allows the majority of the subnet to access the internet through NAT.

Create another NAT rule (NAT-Rule-2) with the source IP address in the original packet set specifically to the IP address that should not be translated (10.0.0.10/32). In this rule, set the source translation to none, indicating that this traffic should not be translated and thus not allowed to access the internet.

Place NAT-Rule-2 above NAT-Rule-1 in the NAT policy list. This ensures that the more specific rule (NAT-Rule-2) is evaluated first. If traffic matches NAT-Rule-2, it will not be translated or allowed to the internet, effectively excluding the specific server from internet access.

This configuration leverages the principle of specificity and the order of operation in NAT policies to exclude a specific IP address from source NAT translation, thereby preventing it from accessing the internet.