This FortiOS Handbook chapter contains the following sections:
Virtual Domains provides an overview of the VDOM technologies, and the basic concepts and rules for using them. We recommend that you begin with this chapter before attempting to configure VDOMs on your FortiGate unit.
Virtual Domains in NAT/Route mode provides detailed explanations and examples for configuring VDOM features in your FortiGate unit using the NAT/Route mode.
Virtual Domains in Transparent mode provides detailed explanations, as well as basic and advanced examples for configuring these features in your FortiGate unit using Transparent mode.
Inter-VDOM routing describes inter-VDOM routing concepts and scenarios, and gives examples that illustrate them.
Troubleshooting Virtual Domains provides diagnostic and troubleshooting information for some potential VDOM issues.