The interface or interfaces associated with this Filter table entry. The bridge corresponding to this Filter table entry is defined to admit packets on ingress to the bridge from the specified interfaces that meet all of the criteria specified in the Filter table entry. The following values are defined. - To associate this Filter with a single interface listed in the AvailableInterface table, the Filter Interface value is set to the value of corresponding AvailableInterfaceKey. - AllInterfaces indicates that this Filter is associated with all LAN and WAN interfaces listed in the AvailableInterface table (all entries of InterfaceType LANInterface or WANInterface). - LANInterfaces indicates that this Filter is associated with all LAN interfaces listed in the AvailableInterface table (all entries of InterfaceType LANInterface). - WANInterfaces indicates that this Filter is associated with all WAN interfaces listed in the AvailableInterface table (all entries of InterfaceType WANInterface). - An empty string indicates the Filter table entry is not associated with any interface (and has no effect).