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70
Appendix F: Glossary
Dual-Band Wireless A+G Broadband Router
Passphrase
- Used much like a password, a passphrase simplifies the WEP encryption process by automatically
generating the WEP encryption keys for Linksys products.
PEAP
(
P
rotected
E
xtensible
A
uthentication
P
rotocol) - A mutual authentication method that uses a combination
of digital certificates and another system, such as passwords.
Ping
(
P
acket
IN
ternet
G
roper) - An Internet utility used to determine whether a particular IP address is online.
POP3
(
P
ost
O
ffice
P
rotocol
3
) - A standard mail server commonly used on the Internet.
Port
- The connection point on a computer or networking device used for plugging in cables or adapters.
P
ower
o
ver
E
thernet (
PoE
) - A technology enabling an Ethernet network cable to deliver both data and power.
PPPoE
(
P
oint to
P
oint
P
rotocol
o
ver
E
thernet) - A type of broadband connection that provides authentication
(username and password) in addition to data transport.
PPTP
(
P
oint-to-
P
oint
T
unneling
P
rotocol) - A VPN protocol that allows the Point to Point Protocol (PPP) to be
tunneled through an IP network. This protocol is also used as a type of broadband connection in Europe.
Preamble
- Part of the wireless signal that synchronizes network traffic.
RADIUS
(
R
emote
A
uthentication
D
ial-
I
n
U
ser
S
ervice) - A protocol that uses an authentication server to control
network access.
RJ-45
(
R
egistered
J
ack
-45
) - An Ethernet connector that holds up to eight wires.
Roaming
- The ability to take a wireless device from one access point's range to another without losing the
connection.
Router
- A networking device that connects multiple networks together.
RTS
(
R
equest
T
o
S
end) - A networking method of coordinating large packets through the RTS Threshold setting.
Server
- Any computer whose function in a network is to provide user access to files, printing, communications,
and other services.
SMTP
(
S
imple
M
ail
T
ransfer
P
rotocol)
- The standard e-mail protocol on the Internet.
SNMP
(
S
imple
N
etwork
M
anagement
P
rotocol)
- A widely used network monitoring and control protocol.
Software
- Instructions for the computer. A series of instructions that performs a particular task is called a
“program”.
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71
Appendix F: Glossary
Dual-Band Wireless A+G Broadband Router
SOHO
(
S
mall
O
ffice/
H
ome
O
ffice) - Market segment of professionals who work at home or in small offices.
SPI
(
S
tateful
P
acket
I
nspection)
Firewall
- A technology that inspects incoming packets of information before
allowing them to enter the network.
Spread Spectrum
- Wideband radio frequency technique used for more reliable and secure data transmission.
SSID
(
S
ervice
S
et
ID
entifier) - Your wireless network's name.
Static IP Address
- A fixed address assigned to a computer or device that is connected to a network.
Static Routing
- Forwarding data in a network via a fixed path.
Subnet Mask
- An address code that determines the size of the network.
Switch
- 1. A data switch that connects computing devices to host computers, allowing a large number of
devices to share a limited number of ports. 2. A device for making, breaking, or changing the connections in an
electrical circuit.
TCP
(
T
ransmission
C
ontrol
P
rotocol) - A network protocol for transmitting data that requires acknowledgement
from the recipient of data sent.
TCP/IP
(
T
ransmission
C
ontrol
P
rotocol/
I
nternet
P
rotocol) - A set of instructions PCs use to communicate over a
network.
Telnet
- A user command and TCP/IP protocol used for accessing remote PCs.
TFTP
(
T
rivial
F
ile
T
ransfer
P
rotocol) - A version of the TCP/IP FTP protocol that has no directory or password
capability.
Throughput
- The amount of data moved successfully from one node to another in a given time period.
TKIP
(
T
emporal
K
ey
I
ntegrity
P
rotocol) - a wireless encryption protocol that provides dynamic encryption keys for
each packet transmitted.
Topology
- The physical layout of a network.
TX Rate
- Transmission Rate.
UDP
(
U
ser
D
atagram
P
rotocol) - A network protocol for transmitting data that does not require acknowledgement
from the recipient of the data that is sent.
Upgrade
- To replace existing software or firmware with a newer version.
Page 78 / 83
72
Appendix F: Glossary
Dual-Band Wireless A+G Broadband Router
Upload
- To transmit a file over a network.
URL
(
U
niform
R
esource
L
ocator) - The address of a file located on the Internet.
VPN
(
V
irtual
P
rivate
N
etwork) - A security measure to protect data as it leaves one network and goes to another
over the Internet.
WAN
(
W
ide
A
rea
N
etwork)- The Internet.
WEP
(
W
ired
E
quivalent
P
rivacy) - A method of encrypting network data transmitted on a wireless network for
greater security.
WINIPCFG
- A Windows 98 and Me utility that displays the IP address for a particular networking device.
WLAN
(
W
ireless
L
ocal
A
rea
N
etwork) - A group of computers and associated devices that communicate with
each other wirelessly.
WPA
(
W
i-Fi
P
rotected
A
ccess) - a wireless security protocol using TKIP (Temporal Key Integrity Protocol)
encryption, which can be used in conjunction with a RADIUS server.
Page 79 / 83
73
Appendix G: Specifications
Dual-Band Wireless A+G Broadband Router
Appendix G: Specifications
Model
WRT55G
Standards
IEEE 802.3, IEEE 802.3u, IEEE 802.11a, IEEE 802.11g, IEEE 802.11b
Ports
Internet: One 10/100 RJ-45 Port for Cable/DSL Modem
LAN: Four 10/100 RJ-45 Switched Ports
One Power Port
Button
One Reset Button
Cabling Type
UTP CAT 5 Ethernet Cable or Better
LEDs
Power, DMZ, Internet, Ethernet (1, 2, 3, 4)
Wireless-A: WLAN, Wireless-G: WLAN
Dimensions
7.32" x 1.89" x 6.89"
(W x H x D)
(186 mm x 48 mm x 175 mm)
Unit Weight
0.88 lbs. (0.4 kg)
Power
External, 5V DC, 2.5A
Certifications
FCC
Operating Temp.
0° C to 40° C (32° F to 104° F)
Storage Temp.
-20° C to 70° C (-4° F to 158° F)
Operating Humidity
10% to 85% Non-Condensing
Storage Humidity
5% to 90% Non-Condensing
Warranty
3-Year Limited
Page 80 / 83
74
Appendix H: Warranty Information
Dual-Band Wireless A+G Broadband Router
Appendix H: Warranty Information
LIMITED WARRANTY
Linksys warrants to You that, for a period of three years (the “Warranty Period”), your Linksys Product will be substantially
free of defects in materials and workmanship under normal use.
Your exclusive remedy and Linksys' entire liability under
this warranty will be for Linksys at its option to repair or replace the Product or refund Your purchase price less any
rebates.
This limited warranty extends only to the original purchaser.
If the Product proves defective during the Warranty Period call Linksys Technical Support in order to obtain a Return
Authorization Number, if applicable.
BE SURE TO HAVE YOUR PROOF OF PURCHASE ON HAND WHEN CALLING.
If You are
requested to return the Product, mark the Return Authorization Number clearly on the outside of the package and include a
copy of your original proof of purchase.
RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE.
You
are responsible for shipping defective Products to Linksys.
Linksys pays for UPS Ground shipping from Linksys back to You
only.
Customers located outside of the United States of America and Canada are responsible for all shipping and handling
charges.
ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED
TO THE DURATION OF THE WARRANTY PERIOD.
ALL OTHER EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF NON-INFRINGEMENT, ARE DISCLAIMED.
Some jurisdictions do not
allow limitations on how long an implied warranty lasts, so the above limitation may not apply to You.
This warranty gives
You specific legal rights, and You may also have other rights which vary by jurisdiction.
This warranty does not apply if the Product (a) has been altered, except by Linksys, (b) has not been installed, operated,
repaired, or maintained in accordance with instructions supplied by Linksys, or (c) has been subjected to abnormal
physical or electrical stress, misuse, negligence, or accident.
In addition, due to the continual development of new
techniques for intruding upon and attacking networks, Linksys does not warrant that the Product will be free of
vulnerability to intrusion or attack.
TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT WILL LINKSYS BE LIABLE FOR ANY LOST DATA, REVENUE OR PROFIT,
OR FOR SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, REGARDLESS OF THE THEORY OF
LIABILITY (INCLUDING NEGLIGENCE), ARISING OUT OF OR RELATED TO THE USE OF OR INABILITY TO USE THE PRODUCT
(INCLUDING ANY SOFTWARE), EVEN IF LINKSYS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
IN NO EVENT
WILL LINKSYS’ LIABILITY EXCEED THE AMOUNT PAID BY YOU FOR THE PRODUCT.
The foregoing limitations will apply even
if any warranty or remedy provided under this Agreement fails of its essential purpose.
Some jurisdictions do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to You.
Please direct all inquiries to: Linksys, P.O. Box 18558, Irvine, CA 92623 USA.

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