BT Micro Owner’s Manual
194
passwords offline until one works (known as offline PSK
dictionary attacks).
ping Packet Internet (or Inter-Network) Groper
A program used to verify whether the host associated with an
IP address is online. It can also be used to reveal the IP
address for a given domain name.
port A physical access point to a device such as a computer or
router, through which data flows into and out of the device.
PPP Point-to-Point Protocol
A protocol for serial data transmission that is used to carry IP
(and other protocol) data between your ISP and your
computer. The WAN interface on the BT Micro uses two
forms of PPP called PPPoA and PPPoE. See PPPoA,
PPPoE.
PPPoA Point-to-Point Protocol over ATM
One of the two types of PPP interfaces you can define for a
Virtual Circuit (VC), the other type being PPPoE. You can
define only one PPPoA interface per VC.
PPPoE Point-to-Point Protocol over Ethernet
One of the two types of PPP interfaces you can define for a
Virtual Circuit (VC), the other type being PPPoA. You can
define one or more PPPoE interfaces per VC.
protocol A set of rules governing the transmission of data. In order for
a data transmission to work, both ends of the connection
have to follow the rules of the protocol.
remote In a physically separate location. For example, an employee
away on travel who logs in to the company’s intranet is a
remote user.
RIP Routing Information Protocol
The original TCP/IP routing protocol. There are two versions
of RIP: version I and version II.
RJ-11 Registered Jack Standard-11
The standard plug used to connect telephones, fax
machines, modems, etc. to a telephone port. It is a 6-pin
connector usually containing four wires.
RJ-45 Registered Jack Standard-45
The 8-pin plug used in transmitting data over phone lines.
Ethernet cabling usually uses this type of connector.
routing Forwarding data between your network and the Internet on
the most efficient route, based on the data’s destination IP
address and current network conditions. A device that
performs routing is called a router.
SDNS Secondary Domain Name System (server)
A DNS server that can be used if the primary DSN server is
not available. See DNS.
SSID Service Set Identifier (also known as the Extended Service Set
Identifier (ESSID)) is a unique identifier that differentiates one
wireless network from another. Wireless PCs configured with
the same SSID can access that network.
subnet A subnet is a portion of a network. The subnet is
distinguished from the larger network by a subnet mask that
selects some of the computers of the network and excludes
all others. The subnet's computers remain physically
connected to the rest of the parent network, but they are
treated as though they were on a separate network. See
network mask.
subnet mask A mask that defines a subnet. See network mask.
TCP See TCP/IP.
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