When you define a network adapter trigger, the rule is relevant only to the traffic that the specified adapter transmits or receives.
You can add a custom network adapter from a firewall rule. However, that adapter is not added to the shared list. You cannot access the custom adapter from any other rule.
To control the traffic that passes through a network adapter
In the console, open a Firewall policy.
On the Firewall Policy page, click Rules.
On the Rules tab, in the Rules list, select the rule you want to edit, right-click the Adapter field, and then click More Adapters.
In the Network Adapter dialog box, do one of the following actions:
To trigger the rule for any adapter (even if it is not listed)
Click Apply the rule to all adapters, and then go to step 7.
To trigger the rule for selected adapters
Click Apply the rule to the following adapters.
Then check the box beside each adapter that you want to trigger the rule.
See Editing a policy.