This object represents the Protocol Type Filter as applied to the Indexed Port. The Filtering capabilities is indicated by each bit in this 2 bytes octet string. 1 - Filter OUT 0 - Do not Filter Bit 0 : Filter OUT All AppleTalk Protocol Packets Bit 1 : Filter OUT All Banyan VINES Protocol Packets Bit 2 : Filter OUT All IBM Netbios Protocol Packets Bit 3 : Filter OUT All IPX/SPX Novell Protocol Packets Bit 4 : Filter OUT All IP Protocol Packets Bit 5 : Filter OUT All Unknown Protocol Packets that are not defined by the above protocol Filtering bits ( Bit 0-4) Bit 6 - 7 - Reserved.