FirewallBuilder

The Interface rule element matches packets based on which firewall interface the packet traverses. (Note that this rule element refers to firewall interfaces, not host interfaces.) By default, all rules created in Firewall Builder affect all firewall interfaces. (This is true in all target platforms.) For cases where you want a rule to match on only a particular interface or set of interfaces, you can drag a firewall interface object or set of firewall interface objects into the field.