WPA – PSK (Pre-shared Key) is used in a Pre Shared Ke y mode that does not
require an authentication server. Access to the Internet and the rest of the
wireless network services is allowed only if the pre-shared key of the computer
matches that of the Access Point. This approach offers the simplicity of the WEP
key, but uses stronger TKIP encryption. EAP (Extensible Authentication Protocol)
is an extension to the PPP protocol that enables a variety of authentication
protocols to be used. It passes through the exchange of authentication messages,
allowing the authentication software stored in a server to interact with its
counterpart in the client.
h Authentication T ype: Select WPA or WPA2 from the drop-down list.
h Encryption: Select TKIP or AES from the drop-down list.
h WPA Preshared key: Enter a pass phrase which is between 8 and 32
characters long .
h Click on the Apply button to save the changes.
h Show Password check box. If you want to make sure the accuracy of
password you type, click the Show Password box to check it.
4.4 Link Status
The Link Status tab displays the current status of the wireless radio. The
following information is included in this tab, as the image depicts below.
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IEEE802.11b/g/n Wireless LAN USB 2.0 Client Adapter Version 1.0
hStatus: This indicates the state of the client. There are three options:
oAssociated: Indicates that the wireless client is connected to an
Access Point (AP). The BSSID is shown in the form of 12 HEX
digits, which is the MAC address of the AP.
oScanning: Indicates that the wireless client is searching for an AP
in the area.
oDisconnected: Indicates that there are no APs or clients in the
area.
hExtra Info: Displayed here are information about the link stats and the
percent of output power.
hCurrent Channel: The operating frequency channel that the client is
using (infrastructure mode).
hLink Speed: The current rate at which the client is transmitting and
receiving.
hThroughput (bytes/sec): Displays the Tx (transmit) and Rx (receive)
kilo-bytes per second.
hLink Quality: In infrastructure mode, this bar displays the transmission
quality between an AP and a client. In Ad-hoc mode, this bar displays
the transmission quality between one client, and another.
hSignal Strength: This bar displays the strength of the signal received
from an AP or client.
hNoise Level: Displays the background noise level; a lower level
indicates less interference.
h Click on the OK button to close this window.
h dBm Check Box. When you click on the check box as the drawing
below. The signal strength and noise level will be shown as the dBm
measurements.
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IEEE802.11b/g/n Wireless LAN USB 2.0 Client Adapter Version 1.0
4.5 Site Survey
The Site Survey tab displays a list of Access Point s and Stations in the area, and
allows you to connect to a specific one. The following information is included in
this tab, as the image depicts below.
hSSID: Displays the SSID of the Access Point. The SSID is a unique
name shared among all points in your wireless network. The SSID must
be identical for all points in the network, and is case-sensitive.
h BSSID: Displays the MAC address of the Access Point.
h Signal: Displays the receiving signal strength from the Access Point.
h Channel: Displays the channel number of the Access Point.
h Encryption: Displays the encryption on the Acc ess Point, this includes
WEP, TKIP, AES or None.
hAuthentication: displays the authentication on the Access Point, this
includes WPA, WPA-PSK, WPA2, or Unknown.
hNetwork Type: Indicates whether the SSID is a Station (Ad-hoc) or
Access Point (Infrastructure).
h Rescan: Click on this button to view a list of Access Points in the area.
h Connect: to connect with a specific Ac cess Point, select the SSID from
the list, and then click on the Connect button.
hAdd Profile: Click on this button to add the SSID and its associated
settings into a profile.
h Click on the OK button if you have made any changes.
4.6 Statistics
The Statistics tab displays transmit and receive packet statistics in real-time.
Information included is frames transmitted/received successfully, transmitted
55
IEEE802.11b/g/n Wireless LAN USB 2.0 Client Adapter Version 1.0
successfully without and after retry, received with CRC error, duplicate frames
received, etc.
4.7 Advanced Configuration
The Advanced tab is used to configure the wireless mode (802.11b-only,
802.11g-only, or 802.11b/g-mixed), B/G protection and country/channel setting.
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IEEE802.11b/g/n Wireless LAN USB 2.0 Client Adapter Version 1.0
hWireless mode: Select 802.11 B/G/N mixed if the wireless network uses
both 11b, 11g and 11n stations and APs.
hTx Rate: The transmit rate should be set to auto, however you may
manually select a transmit rate from the drop-down list.
h Click on the Apply button to save the changes.
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IEEE802.11b/g/n Wireless LAN USB 2.0 Client Adapter Version 1.0
4.8 About
The About tab displays information about the device, such as: the ne twork d river
version and date, configuration utility version and date, and the NIC (Network
Interface Card) firmware version and date.
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IEEE802.11b/g/n Wireless LAN USB 2.0 Client Adapter Version 1.0
Appendix A – Glossary
8
802.11
A family of specifications for wireless local area networks (WLANs) developed by a
working group of the Institute of Electrical and Electronics Engineers (IEEE).
A
Access Control List
ACL. This is a database of network devices that are allowed to access resources on the
network.
Access Point
AP. Device that allows wireless clients to connect to it and access the network
ActiveX
A Microsoft specification for the interaction of software components.
Address Resolution Protocol
ARP. Used to map MAC addresses to IP addresses so that conversions can be made in
both directions.
Ad-hoc network
Peer-to-Peer network between wireless clients
ADSL
Asymmetric Digital Subscriber Line
Advanced Encryption Standard
AES. Government encryption standard
Alphanumeric
Characters A-Z and 0-9
Antenna
Used to transmit and receive RF signals.
AppleTalk
A set of Local Area Network protocols developed by Apple for their computer systems
AppleTalk Address Resolution Protocol
AARP. Used to map the MAC addresses of Apple computers to their AppleTalk network
addresses, so that conversions can be made in both directions.
Application layer
7th Layer of the OSI model. Provides services to applications to ensure that they can
communicate properly with other applications on a network.
ASCII
American Standard Code for Information Interchange. This system of characters is most
commonly used for text files
Attenuation
The loss in strength of digital and analog signals. The loss is greater when the signal is
being transmitted over long distances.
Authentication
To provide credentials, like a Password, in order to verify that the person or device is
really who they are claiming to be
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IEEE802.11b/g/n Wireless LAN USB 2.0 Client Adapter Version 1.0
Automatic Private IP Addressing
APIPA. An IP address that that a Windows computer will assign itself when it is
configured to obtain an IP address automatically but no DHCP server is available on the
network
B
Backward Compatible
The ability for new devices to communicate and interact with older legacy devices to
guarantee interoperability
Bandwidth
The maximum amount of bytes or bits per second that can be transmitted to and from a
network device
Basic Input/Output System
BIOS. A program that the processor of a computer uses to startup the system once it is
turned on
Baud
Data transmission speed
Beacon
A data frame by which one of the stations in a Wi-Fi network periodically broadcasts
network control data to other wireless stations.
Bit rate
The amount of bits that pass in given amount of time
Bit/sec
Bits per second
BOOTP
Bootstrap Protocol. Allows for computers to be booted up and given an IP address with
no user intervention
Bottleneck
A time during processes when something causes the process to slowdown or stop all
together
Broadband
A wide band of frequencies available for transmitting data
Broadcast
Transmitting data in all directions at once
Browser
A program that allows you to access resources on the web and provides them to you
graphically
C
Cable modem
CardBus
CAT 5
Client
A device that allows you to connect a computer up to a coaxial cable and receive Internet
access from your Cable provider
A newer version of the PC Card or PCMCIA interface. It supports a 32-bit data path, DMA,
and consumes less voltage
Category 5. Used for 10/100 Mbps or 1Gbps Ethernet connections
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