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106
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tec 54 Mbps Wireless DSL Gateway User Manual
Ethernet Network
A standard wired networking configuration using cables and hubs.
Firewall
A method preventing users outside the network from accessing and/or damag-
ing files or computers on the network.
Gateway
A central device that manages the data traffic of your network, as well as data
traffic to and from the Internet.
IP (Internet Protocol) Address
A series of four numbers separated by periods identifying a unique Internet
computer host.
ISP Gateway Address
An
IP
address for the Internet router. This address is only required when using a
cable or
DSL
modem.
ISP (Internet Service Provider)
A business that allows individuals or businesses to connect to the Internet.
LAN (Local Area Network)
A group of computers and devices connected together in a relatively small area
(such as a house or an office). A home network is considered a
LAN
.
MAC (Media Access Control) Address
The hardware address of a device connected to a network.
NAT (Network Address Translation)
A method allowing all of the computers on a home network to use one
IP
address, enabling access to the Internet from any computer on the home net-
work without having to purchase more
IP
addresses from the
ISP
.
PC Card
An adapter that inserts in the
PCMCIA
slot of a computer, enabling the commu-
nication with a device.
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107
Appendix E
Glossary
PPPoE (Point-To-Point Protocol over Ethernet)/
PPPoA (Point-To-Point Protocol over ATM)
Methods of secure data transmission.
Router
A central device that manages the data traffic of your network.
Subnet Mask
A set of four numbers configured like an
IP
address used to create
IP
address
numbers used only within a particular network.
SSID
See “
ESSID
.”
TCP/IP (Transmission Control Protocol/Internet Protocol)
The standard protocol for data transmission over the Internet.
WAN (Wide Area Network)
A network that connects computers located in separate areas, (i.e., different
buildings, cities, countries). The Internet is a
WAN
.
WECA (Wireless Ethernet Compatibility Alliance)
An industry group that certifies cross-vender interoperability and compatibility
of
IEEE 802.11
b wireless networking products and promotes the standard for
enterprise, small business, and home environments.
WLAN (Wireless Local Area Network)
A group of computers and other devices connected wirelessly in a small area.
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109
Service Acronyms
The following information is related to the Firewall options (High, Medium,
and Low) section in the “Advanced Setup” chapter of this manual. This appendix
explains the meaning of the service acronyms included with the various levels of
firewall security, and the
UDP
and
TCP
ports used by each service.
Service Acronym Definitions
DNS
D
omain
N
ame
S
ystem. A data query system used to translate host names into
Internet addresses (i.e., www.somewebsite.com translates to
888.999.000.111
).
Uses
UDP
53 and
TCP
53.
EPMAP
E
nd
P
oint
Map
per. Uses
UDP
135 and
TCP
135.
FTP
F
ile
T
ransfer
P
rotocol. A protocol used to transfer files over the Internet. Uses
TCP 20
and
21
.
HTTP
H
yper
T
ext
T
ransfer
P
rotocol. This protocol delivers information over the
Internet, and is used when a computer connects to a Web site via an Internet
browser. Uses
TCP 80
.
HTTPS
H
yper
T
ext
T
ransfer
P
rotocol using
S
ecure Socket Layer. A secure version of the
protocol that delivers information over the Internet. Uses
UDP
443 and
TCP
443.
F
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tec 54 Mbps Wireless DSL Gateway User Manual
IMAP, IMAPv3
I
nternet
M
essage
A
ccess
P
rotocol. Protocols for retrieving E-mail messages.
IMAP
uses
TCP 143
;
IMAP
v
3
uses
TCP
220
.
IPSEC IKE, IPSEC ESP
IP Sec
urity. Protocols which support the secure exchange of packets at the
IP layer
.
Uses
UDP
500.
LDAP
L
ightweight
D
irectory
A
ccess
P
rotocol. A set of protocols for accessing informa-
tion directories. Uses
TCP
389.
MICROSOFT-DS, -GC
-
DS
uses
UDP
445 and
TCP
445; -
GC
uses
TCP 3268
.
NETBIOS-NS, -DGM, -SSN
Net
work
B
asic
I
nput
O
utput
S
ystem. Three types of
DOS BIOS
augmentation
which add functions for local area networks (LANs). -
NS
uses
UDP
137 and
TCP
137; -
DGM
uses
UDP
138; -
SSN
uses
TCP
138.
NNTP
N
etwork
N
ews
T
ransfer
P
rotocol. A protocol used to distribute and retrieve
news articles over the Internet. Uses
TCP
119.
POP3
P
ost
O
ffice
P
rotocol 3. Another protocol used to transfer E-mail between
computers. Usually employs a pop3 server, and is used to receive mail only. Uses
TCP
110.
PROFILE
Uses
TCP
136.
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