Palo Alto Networks Certified Network Security Administrator (PCNSA)Initial Configuration and ManagementEasy
A network administrator is performing the initial setup of a Palo Alto Networks firewall. The firewall will be managed via its management interface. Which of the following is a mandatory step to ensure the firewall can communicate with external services like DNS servers and NTP servers for management plane operations?
- AConfigure a data plane interface with a security zone and security policy.
- BEnable an active/passive High Availability (HA) configuration.
- CDefine a service route for the management interface.
- DInstall the latest content and software updates immediately.
Show answer & explanationAnswer & explanation
Correct answer: C. Define a service route for the management interface.
Service routes are used to specify which interface the management plane should use to reach specific destinations, such as DNS, NTP, and external logging servers. Without a service route, the management interface may not be able to communicate with these critical services.
Why the other options are wrong
- A. This is for data plane traffic forwarding, not management plane communication to external services.
- B. HA is for redundancy, not for enabling initial management plane communication with external services.
- D. Updates are important but cannot occur if the management plane cannot reach update servers, which often requires a service route.
Service Route
A configuration that specifies which interface the management plane of a Palo Alto Networks firewall should use to communicate with external services.
- Directs management traffic (DNS, NTP, syslog, updates).
- Configured under Device > Setup > Services > Service Route Configuration.
- Essential for management plane's external connectivity.
Memory trick: Management's GPS: Service Route guides its way.