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NSE4 · Question #450

A FortiGate devices has two VDOMs in NAT/route mode. Which of the following solutions can be implemented by a network administrator to route traffic between the two VDOMs.(Choose two)

The correct answer is B. Manually create and configured an inter-VDOM link between yours. C. Interconnect and configure an external physical interface in one VDOM to another physical. Routing traffic between FortiGate VDOMs in NAT/route mode can be achieved by either manually configuring virtual inter-VDOM links or by physically connecting dedicated interfaces from each VDOM.

Submitted by klara.se· Apr 18, 2026FortiGate Deployment and System Configuration

Question

A FortiGate devices has two VDOMs in NAT/route mode. Which of the following solutions can be implemented by a network administrator to route traffic between the two VDOMs.(Choose two)

Options

  • AUse the inter-VDOMs links automatically created between all VDOMS.
  • BManually create and configured an inter-VDOM link between yours.
  • CInterconnect and configure an external physical interface in one VDOM to another physical
  • DConfigure both VDOMs to share the same table.

How the community answered

(26 responses)
  • A
    8% (2)
  • B
    73% (19)
  • D
    19% (5)

Why each option

Routing traffic between FortiGate VDOMs in NAT/route mode can be achieved by either manually configuring virtual inter-VDOM links or by physically connecting dedicated interfaces from each VDOM.

AUse the inter-VDOMs links automatically created between all VDOMS.

FortiGate does not automatically create inter-VDOM links between all VDOMs; these virtual interfaces must be manually configured by an administrator if inter-VDOM routing is desired.

BManually create and configured an inter-VDOM link between yours.Correct

Manually creating and configuring an inter-VDOM link (a virtual interface) between the two VDOMs is a common and supported method to route traffic directly and logically between them.

CInterconnect and configure an external physical interface in one VDOM to another physicalCorrect

Interconnecting and configuring an external physical interface in one VDOM to another physical interface in a different VDOM allows traffic to be routed between them as if they were separate physical devices connected by a cable.

DConfigure both VDOMs to share the same table.

VDOMs are designed for logical separation, each operating with its own distinct routing table; configuring them to share the same routing table would defeat the purpose of VDOM isolation in NAT/route mode.

Concept tested: Inter-VDOM routing methods (FortiGate)

Source: https://docs.fortinet.com/document/fortigate/7.4.0/administration-guide/523277/inter-vdom-links

Topics

#VDOMs#Inter-VDOM routing#FortiGate configuration#Network connectivity

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