PSE-Strata Exam Dumps : Palo Alto Networks System Engineer Professional - Strata

DNS Sinkholing is a powerful feature in network security that offers several advantages:

Forging DNS replies to known malicious domains: This technique redirects malicious domain queries to a designated IP address (sinkhole), effectively preventing the malware from communicating with its command and control servers, thereby neutralizing its threat.

Working upstream from the internal DNS server: DNS Sinkholing can be implemented upstream, meaning it intercepts and manipulates DNS queries before they reach the internal DNS server. This preemptive action helps in blocking threats early in the DNS resolution process, providing an additional security layer​ (Palo Alto Networks)​​ (Palo Alto Networks)​.

Decryption port mirroring is supported on all hardware-based and VM-Series firewalls, with specific exceptions.

Decryption port mirroring: This feature allows the firewall to forward decrypted traffic to a traffic analysis tool, providing visibility into encrypted traffic. It is supported on all hardware-based and VM-Series firewalls, except for deployments on VMware NSX, Citrix SDX, or public cloud hypervisors.

To support asymmetric routing with redundancy in a legacy environment using Palo Alto Networks firewalls, the following two features must be enabled:

Policy-based forwarding (PBF): This feature allows you to direct traffic to a specific interface or next-hop IP address, bypassing the normal routing table. PBF is crucial for managing asymmetric routing scenarios where inbound and outbound traffic might take different paths.

HA active/active: High Availability (HA) active/active configuration enables two firewalls to simultaneously manage traffic, providing redundancy and failover capabilities. This setup is essential for maintaining network availability and performance in environments with asymmetric routing, as it ensures that both firewalls can actively handle traffic.

References:

Palo Alto Networks High Availability (HA) Guide

Palo Alto Networks Policy-Based Forwarding Documentation