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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 Mitel 1000 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 device from another. Wireless PCs configured with the
same SSID can access that device.
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/IP
Transmission Control Protocol/Internet Protocol
The basic protocols used on the Internet. TCP is responsible for
dividing data up into packets for delivery and reassembling them
at the destination, while IP is responsible for delivering the
packets from source to destination. When TCP and IP are