SMC Networks ADSL Barricade SMC7204BRA - Manual (Page 149)

Blocked Protocols
151
Protocol Description
PPPoE This is the abbreviation of Point-to-Point Protocol over Ethernet.
Many DSL modems use PPPoE to establish and maintain a
connection with a service provider. PPPoE provides a means of
logging in to the ISPs servers so that they can authenticate you
as a customer and provide you access to the Internet. Check with
your ISP before blocking this protocol.
IP Multicast IP Multicast is an extension to the IP protocol. It enables
individual packets to be sent to multiple hosts on the Internet, and
is often used for handling e-mail, mailing lists and
teleconferencing/videoconferencing.
RARP This is the abbreviation of Reverse Address Resolution Protocol.
This IP protocol provides a way for computers to determine their
own IP addresses when they only know their hardware address
(i.e., MAC addresses). Certain types of computers, such as
diskless workstations, must use RARP to determine their IP
address before communicating with other network devices.
AppleTalk
This is a networking protocol used for Apple Macintosh
®
networks.
NetBEUI This is the abbreviation of NetBIOS Enhanced User Interface. On
many LAN operating systems, the NetBEUI protocol provides the
method by which computers identify themselves to and
communicate with each other.
IPX This is the abbreviation of Internet work Packet Exchange. A
networking protocol used on Novell Netware-based LANs.
BPDU This is the abbreviation of Bridge Protocol Data Unit. BPDUs are
data messages that are exchanged across the switches between
LANs that are connected by a bridge. BPDU packets contain
information on ports, addresses, priorities and costs, and are
exchanged across bridges to detect and eliminate loops in a
network.
ARP Address Resolution Protocol. Computers on a LAN use ARP to
learn the hardware addresses (i.e., MAC addresses) of other
computers when they only know their IP addresses.