Which interface type should a firewall administrator configure as an upstream to the ingress trusted interface when configuring transparent web proxy on a Palo Alto Networks firewall?

The correct answer is D. Lookback. When configuring a transparent web proxy on a Palo Alto Networks firewall, it's essential to set up a loopback interface as the upstream to the ingress trusted interface. This loopback interface serves as the proxy's listening point, ensuring that all incoming traffic is routed…

Submitted by mateo_ar· Apr 18, 2026Deploy and Configure

Question

Options

ATunnel
BEthernet
CVLAN
DLookback

How the community answered

(22 responses)

A
5% (1)
C
5% (1)
D
91% (20)

Explanation

When configuring a transparent web proxy on a Palo Alto Networks firewall, it's essential to set up a loopback interface as the upstream to the ingress trusted interface. This loopback interface serves as the proxy's listening point, ensuring that all incoming traffic is routed through the proxy. The loopback interface should not be associated with any other subnets. https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-new-features/networking-features/web-

Topics

#Transparent Proxy#Loopback Interface#Proxy Configuration#Network Interfaces

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