Palo Alto Networks Certified Network Security Administrator (PCNSA)Initial Configuration and ManagementEasy
A company is integrating a new Palo Alto Networks firewall into their existing network infrastructure. The firewall needs to obtain its IP address and other network configuration details dynamically from a DHCP server during initial setup. Which configuration method should the network administrator choose for the interface?
- ALink-Local Addressing.
- BStatic IP address assignment.
- CPPPoE client configuration.
- DDHCP Client mode.
Show answer & explanationAnswer & explanation
Correct answer: D. DHCP Client mode.
To obtain network configuration dynamically from a DHCP server, the interface must be configured in DHCP Client mode. This allows the firewall to request an IP address, subnet mask, default gateway, and DNS servers from the DHCP server.
Why the other options are wrong
- A. Link-Local Addressing (APIPA) is for stateless auto-configuration when no DHCP server is available, and does not meet the requirement of obtaining details from a DHCP server.
- B. Static IP assignment requires manual entry of all network parameters, which contradicts the 'dynamically' requirement.
- C. PPPoE (Point-to-Point Protocol over Ethernet) is used for connecting to ISPs over an Ethernet link, not for general dynamic IP assignment within a LAN.
DHCP Client Mode
A network interface configuration that allows a device, like a Palo Alto Networks firewall, to dynamically obtain its IP address and other network parameters from a DHCP server.
- Automates IP address assignment.
- Obtains subnet mask, gateway, DNS servers.
- Useful for initial setup or dynamic environments.
Memory trick: DHCP Client: The firewall asks for its address, no manual maps needed.