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

PAN-OS can decrypt and inspect SSL inbound and outbound connections going through the firewall. SSL decryption can occur on interfaces in virtual wire, Layer 2 or Layer 3 mode https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClmyCAC

For active/passive HA upgrades, best practices minimize downtime by upgrading the passive peer first (Option D), rebooting it to confirm stability, restoring HA sync, and then upgrading the active peer. This keeps services running on the active firewall during the passive upgrade, ensuring a smooth transition with failover capability intact.

Option A (both at once) causes downtime. Option B (suspend active) disrupts service unnecessarily. Option C (active first) risks failover to an unupgraded peer. Documentation mandates this sequence.

For virtual systems (vSys) on a Palo Alto Networks firewall to communicate with each other, especially when separate virtual routers (VRs) are used for each vSys, the configuration must facilitate proper routing and security policy enforcement. The key aspects to focus on include:

A. External zones with the virtual systems added:

External zones are special types of zones that are used to facilitate traffic flow between virtual systems within the same physical firewall. By adding virtual systems to an external zone, you enable them to communicate with each other, effectively bypassing the need for traffic to exit and re-enter the firewall.

D. Add a route with next hop next-vr by using the VR configured in the virtual system:

When using separate VRs for each vSys, it's essential to configure inter-VR routing. This is done by adding routes in each VR with the next hop set to 'next-vr', specifying the VR of the destination vSys. This setup enables traffic to be routed from one virtual system's VR to another, facilitating communication between them.

E. Ensure the virtual systems are visible to one another:

Visibility between virtual systems is a prerequisite for inter-vSys communication. This involves configuring the virtual systems in a way that they are aware of each other's existence. This is typically managed in the vSys settings, where you can specify which virtual systems can communicate with each other.

By focusing on these configuration details, the network security engineer can ensure that the virtual systems can communicate effectively, maintaining the necessary isolation while allowing the required traffic flow.

https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-networking-admin/bfd/bfd-overview/bfd-for-dynamic-routing-protocols