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Page 44 ADSL Modem Router
DSSS
Also known as Direct Sequence Spread
Spectrum, it is a radio transmission method
that continuously changes frequencies.
Ethernet
One of the most common Local Area Network
(LAN) standards. Ethernet uses a bus
topology which supports a data transfer rate
of 10 or 100 Mbps.
ESS
ESS is the acronym of Extend Service Set that
consists of several BSS.
Firewall
A security system used to enforce an access
control policy between an organisation’s
networks and the Internet.
IEEE
Short for Institute of Electrical and Electronics
Engineers, an organization best known for
developing standards for the computer and
electronics industry.
Internet
A global network connecting millions of
computers for the exchange of data, news and
opinions.
Intranet
A network based on TCP/IP Protocol
belonging to an organization, and accessible
only by that organization’s members,
employees, or others with authorization.
Infrastructure Network
Unlike an ad-hoc network (where users on a
wireless LAN send data to each other
directly), users on an infrastructure network
send data through a dedicated access point.
Additionally, the access point enables users
on a wireless LAN to access an existing wired
network to take advantage of sharing the
wired networks resources, such as files,
printers, and Internet access.
IP Address
An identifier for a computer or device on a
TCP/IP network. Networks using the TCP/IP
Protocol route messages based on the IP
Address of the destination. The format of an
IP address is a 32-bit numeric address written
as four numbers separated by periods. Each
number can be from zero to 255.
IPSec
Internet Protocol Security is a security
standard for network transmission, which is
often used for VPN connections. It provides
authentication and packet encryption over the
Internet.
ISP
Short for Internet Service Provider, a
company that provides access to the Internet
for a fee.
Local Area Network (LAN)
A computer network that spans a relatively
small area. Most LANs are confined to a
single building or group of buildings.
However, one LAN can be connected to other
LANs over any distance. A system of LANs
connected in this way is called a wide area
network (WAN)
MAC Address
Short for Media Access Control Address, a
hardware address that uniquely identifies each
node of a network.
NAT
Short for Network Address Translation, a
routing protocol that allows global IP
Addresses to be translated into multiple
private IP Addresses for use on internal LAN
networks. The explosion in the use of the
Internet has created a critical problem for the
Internet Assigned Numbers Authority
(IANA) which is in charge of assigning IP
Addresses to Internet users, ISPs etc. NAT is
a technology that has been introduced to help
maximize the utilization of assigned IANA
and global IP Addresses.