Technical Tip: How to configure multiple interfaces on a firewall policy (GUI)
Description
By default on the firewall policy GUI, multiple interfaces can not be set. This article describes how to enable this feature.
Scope
FortiGate.
Solution
- Enable the Multiple Interface Policies under System -> Feature on GUI.
- Once this option has been enabled in the GUI, enable it in the CLI.
config system settings
set gui-multiple-interface-policy enable
end
Once enabled, refresh the firewall page. Then, go to the firewall policy and add multiple interfaces as required.

Note:
On versions before 7.4, using multiple incoming/outgoing interfaces in the firewall policy will cause the 'Interface Pair View' to be greyed out as shown below. Starting from FortiOS 7.4, 'Interface Pair View' will not be greyed out.

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