XAVI Technologies Corp. X8821r+ User manual - page 28
X8821r User’s Manual Version 1.0
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9.7 Blocked
Protocols
Click on the Blocked Protocols link to view the list of protocols.
This page is used to block or unblock protocols running across
the system. Place a check in the box of particular protocol in
order to block it.
The ADSL/Ethernet router is capable of sending and receiving
information in a variety of protocol formats. The Blocked
Protocols feature enables you to prevent the ADSL/Ethernet
router from passing any data that uses a particular protocol.
Unlike the IP Filter feature, you cannot specify additional criteria
for blocked protocols, such as particular users or destinations.
However, when you are certain that a particular protocol is not
needed or wanted on your network, this feature provides a
convenient way to discard such data before it is passed.
Note: Blocking certain protocols
may disrupt or disable your
network communication or
Internet access. If you are
unfamiliar with how your network
or Internet connection uses these
protocols, contact your ISP before
disabling
.
PPPoE:
Point to Point
Protocol over Ethernet.
Many DSL modems use
PPoE to establish and
maintain a connection
with a service provider.
PPoE 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 and videoconferencing.
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RARP: 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: A networking protocol used in for Apple
Macintosh® networks.
NetBEUI: 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: Internetwork Packet Exchange. A networking protocol
used on Novell Netware ®-based LANs.
BDPU: 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 know only their
IP addresses.
IPV6 Multicast: IP Multicasting under IP Protocol version 6.
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 and videoconferencing.
802.1Q: This IEEE specification defines a protocol for
virtual LANs on Ethernet networks. A virtual LAN is a group
of PCs that function as a local area network, even though
the PCs may not be physically connected. They are
commonly used to facilitate administration of large
networks.
Click on the Submit button when completed and make sure
to Commit & Reboot.