DN-70031_manual_english_20110601

DN-70031_manual_english_20110601
WIRELESS LAN
USB 2.0 ADAPTER
USER´s GUIDE
(DN-70031)
© All rights reserved.
All trade names are registered trademarks of respective manufacturers listed.
This manual may not be copied in any media or form without the written consent of original maker.
Information To User ..................................................……..i
1. Introduction .........................................................…… 1
2. Wireless LAN Basics ................................................……. 3
3. IP ADDRESS ..........................................................……. 4
4. Install Driver/Utility ...............................................……. 5
5. Wireless Network Configuration ................................……… 8
5.1 Utility Icon ........................................................
5.2 Client Mode (Default Setting)...................................
5.3 AP and Wizard Setup.............................................
5.4 AP Mode ...........................................................
8
9
12
14
6. Technical Specifications ............................................... 15
7. Troubleshooting ......................................................... 16
8. Glossary ................................................................... 17
INFORMATION TO USER
Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation.
This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there
is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by
one of the following measures:
* Reorient or relocate the receiving antenna.
* Increase the separation between the equipment and receiver.
* Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
* Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: Any changes or modifications not expressly approved
by the party responsible for compliance could void the user's authority to
operate this equipment.
IMPORTANT NOTE:
FCC Radiation Exposure Statement:
* This equipment complies with FCC radiation exposure limits set
forth for an uncontrolled environment.
* This transmitter must not be co-located or operating in conjunction
with any other antenna or transmitter.
* We declare that this US model is limited in CH1~CH11 for 2.4G band by
specific firmware controlled by the manufacturer and is not user changeable.
i
REGULATORY INFORMATION
WLAN 11b/g Adapter must be installed and used in strict accordance with the
instructions. This device complies with the following radio frequency and
safety standards.
USA - Federal Communications Commission (FCC)
This device complies with Part 15 of FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference that may cause undesired
operation.
Europe- R&TTE Compliance Statement
This equipment complies with all the requirements of DIRECTIVE 1999/5/CE
OF THE EUROPEAN PARLIAMENT AND THE COUNCIL of March 9, 1999 on radio
equipment and telecommunication terminal Equipment and the mutual
recognition of their conformity (R&TTE)
CE Declaration of Conformity
This product is herewith confirmed to comply with the requirements set out in the
Council (European parliament) Directive on the Approximation of the Laws of the
Member States relating to Electromagnetic Compatibility of Radio and Telecom
device (1999/5/EC). For the evaluation regarding this Directive, the following
standards were applied:
EN 300 328 V1.6.1 (2004-11)
EN 301 489-1 V1.4.1 (2002-08), EN 301 489-17 V1.2.1 (2002-08)
EN 60950-1: 2001
Ii
EU Countries Not intended for use
None.
Potential restrictive use
France: Only channels 10,11,12, and 13
The channel identifiers, channel center frequencies, and
regulatory domains of each 22-MHz-wide channel are shown in
following Table.
Channel
Center
Identifier
Frequency
Regulatory Domains
North
Israel
France
Mexico
(MHZ)
Japan
ETSI
1
2412
ˇ
ˇ
ˇ
ˇ
2
2417
ˇ
ˇ
ˇ
ˇ
3
2422
ˇ
ˇ
ˇ
ˇ
4
2427
ˇ
ˇ
ˇ
ˇ
ˇ
5
2432
ˇ
ˇ
ˇ
ˇ
ˇ
6
2437
ˇ
ˇ
ˇ
ˇ
ˇ
7
2442
ˇ
ˇ
ˇ
ˇ
8
2447
ˇ
ˇ
ˇ
ˇ
9
2452
ˇ
ˇ
ˇ
ˇ
10
2457
ˇ
ˇ
ˇ
ˇ
11
2462
ˇ
ˇ
ˇ
ˇ
12
2467
ˇ
ˇ
13
2472
ˇ
ˇ
14
2484
ˇ
America
iii
ˇ
Thank you for your purchase of the WLAN Mini USB Adapter.
Featuring wireless technology, this wireless networking solution has
been designed for both large and small businesses, and it is scalable
so that you can easily add more users and new network features
depending on your business scale.
FEATURES
Support Microsoft Windows 2000, XP and Vista.
Operating distance of up to 300 meters in free space.
54/48/36/24/18/12/11/9/6/5.5/2/1 Mbps selectable Data Rate.
Support USB 2.0 interface.
64-bit or 128-bit WEP (Wired Equivalent Privacy); WPA
(Wi-Fi Protected Access),WPA2
2.400GHz ~ 2.4835GHz unlicensed ISM Frequency Band.
Modulation Method :
IEEE 802.11b : DSSS (Direct Sequence Spread Spectrum).
IEEE 802.11g : OFDM (Orthogonal Frequency Division Multiplexing).
Easy operation and setting up.
SYSTEM REQUIREMENTS
Windows System : 2000, XP and Vista.
PCs must have a device driver installed. It allows you to communicate
with WLAN Mini USB Adapter.
1
BEFORE YOU START
1. Confirm Box Contents
CONNECTING YOUR WLAN
USB ADAPTER TO PC
Quick Start Guide
Connect your WLAN USB
dongle to your PC.
Install driver.
GETTING TO KNOW WIRELESS LAN USB ADAPTER
LED
LED turns on when POWER is applied to the WLAN Mini USB Adapter.
LED is blinking when PC is sending data through WLAN Mini USB
Adapter.
2
Wireless LAN network defined by IEEE 802.11b/g standard committee
could be configured as :
Ad Hoc wireless LAN.
Infrastructure wireless LAN.
Ad Hoc network is a group of PCs installed with wireless LAN cards, this
group of PCs is called a BSS (Basic Service Set). PCs in this group can use
their wireless LAN cards to communicate with each other, but can not
connect to the Internet.
Ad Hoc Wireless Network
Infrastructure Wireless Network
The most obvious difference between Infrastructure wireless network
and Ad Hoc wireless network is that the PCs in Infrastructure wireless
network can access the resource in the Internet through Access Point.
Depending on your requirement, you can easily set up your PC’s
network to be a “Ad Hoc” or “Infrastructure” wireless network. Generally
speaking, if in your network, there is an Access Point in it, we recommend
you to set your network as an “Infrastructure”, so it can connect to
the Internet.
3
To use the WLAN Mini USB Adapter with a computing device, the WLAN
Mini USB Adapter must be equipped with an USB 2.0 Interface. All
drivers and supporting software for the WLAN Mini USB Adapter must be
installed and configured first.
Ask your system administrator for the following information, which you
may need to provide during driver installation :
Your Wireless Client Name.
Your Wireless SSID.
Your computer’s unique client name and workgroup name.
For your network account, your user name and password.
Your IP address, gateway address, and subnet mask if you’re not
using a DHCP client.
Any computer on a network is identified by a unique network address.
There are two methods to assign a network address to a computer on a
TCP/IP network :
Static IP addressing.
Dynamic IP addressing (DHCP Client).
In network with static IP addressing, the network administrator manually
assigns an IP address to each computer. Once a static IP address is
assigned, a computer uses the same IP address every time it reboots and
logs on to the network. You may manually change the IP address in the
Network Properties dialog box. Network using static IP address is easy to
set up and do not require additional network management software.
In network with dynamic IP addressing, a DHCP server in the network
dynamically assigns IP addresses to all clients every time they log on to
the network. Network using dynamic IP address requires setting up and
running a DHCP Server.
4
The installation & driver CD will automatically activate the autorun installation
program after you insert the disk into your CD drive.
Step 1 :
Insert the installation & driver
CD into your CD-ROM.
Installation program will prompt
language setup. Pickup the Setup
Language you would like to use
and click Next button.
Step 2 :
Welcome Installation dialog
prompt shown.
Click Next to continue.
Click Cancel to close installation.
Step 3 :
Select to local wireless region.
Click Back to go previous.
Click Install to continue.
Click Cancel to close wizard.
5
Step 4 :
Click Finish to complete
installation.
Driver Setup without WHQL ( Optional )
Chipset vendor may provide the driver without WHQL. Please refer the following
steps to setup.
Step 1 :
Plug the USB adapter into the
USB port of your PC. Choose “No,
not this time”.
Click Next to continue.
Click Cancel to exit driver
installation.
Step 2 :
Windows will detect USB device
plug in. Choose “Install the
software automatically
[ Recommended ]”
Click Back to go previous
Click Next button continue.
Click Cancel to close installation
6
Step 3 :
Windows will detect USB device
and copy driver to windows
system.
Step 4 :
Windows will install USB driver to
system folder and click Finish to
complete installation..
7
WLAN USB Adapter uses its own management software. All functions
controlled by users are provided by this application. When you insert the
WLAN USB Adapter into the USB port of your PC, a new icon should
appear in the Windows System Tray automatically
5.1 Utility Icon

Client mode utility running but no WLAN USB Adapter plugged

Client mode utility running and WLAN USB Adapter scan available
network.

Client mode utility running and WLAN USB Adapter can not scan any AP

AP mode utility running.
5.2 Client Mode (Default Setting)
5.2.1 Wireless USB Device Control




Show Tray Icon – Show icon or not show icon in systray.
Radio Off – Stop wireless signal.
Disable Adapter – Stop wireless USB device.
Windows Zero Config – Switch utility to winxp default wireless
setting tool.
8
5.2.1 GENERAL SETTING
Once USB device is
plugged, double click on
that icon and the
configuration window
will pop up as shown. It
shows the current
connected network. The
signal strength and link
quality are displayed
also.
The bar graph displays
the quality and strength of the link between the node and its Access
Point. Link Quality is a measurement of receiving and transmitting
performances over the radio.
Network Address displays current MAC Address, IP Address,
Subnet. and Gateway.
Click Renew IP button to refresh IP address leased from wireless
AP.
5.2.2 PROFILE SETTING
In profile tab, you can
Add, Remove, Edit,
Duplicate and Set
Default to manipulate
profile content manually.
Strongly recommend to
use profile after you do
Available Network.
9
5.2.3 AVAILABLE NETWOEK SETTING
Click Available
Network tab and it will
show all available
networks that radio can
reaches. Select proper
SSID & BSSID you want
to connect.
Click Refresh button to
force and rescan
available networks
currently.
Select one of SSIDs,
and click Add to Profile
to create profile that can
be configured more
wireless parameters.
In this page, you can
edit your profile name,
configure wireless
security like WEP,
WPA, WPA2,
802.1x …etc. After
finishing setup, click OK button to save configuration.
5.2.4 ADVANCED SETTING
In Advanced tab, you
may configure Power
Save mode, Turbo
Mode, Wireless Mode,
Preamble Mode,
Channel Plan, PSP
Xlink Mode, WMM
Parameter, Fragment
Threshold and RTS
10
Threshold. Once you change the value, click Apply button to save
them. Also click Set Default button to apply them to default value.
PS. Strongly recommend be careful to change Fragment, RTS
Threshold if you’re not have wireless knowledge background.
5.2.5 Status
Status page tab, shows
all wireless, networking
and device driver
version in details.
5.2.6 Statistics
Statistics page tab will
show real-time TX/RX
relative counters to
check or evaluate the
wireless performance.
Click Reset button to
set counter to zero.
5.2.7 Wi-Fi Protect Setup
Wi-Fi Protect Setup
provides PIN and Push
Button to perform
simple setup but
complex wireless lan
security protection.
11
5.3 AP and Wizard Setup
5.3.1 Wizard-1
Click Set Wizard menu
to enter operation
wizard.
Click AP: Setup
Access Point wireless
network to configure
Access Point
parameters.
Next to continue.
Cancel to leave wizard
page.
5.3.2 Wizard-2
Pick up Normal User
(minimum settings) or
Advanced User
(minimum and wireless
security settings). Lets
pick up Advanced User
for example.
Back to go previous.
Next to continue.
Cancel to close wizard.
5.3.3 Wizard-3
User defines wireless
network Name [SSID]
(less than 32
characters). User may
skip wireless security.
Strongly recommend
user to setup wireless
security to avoid invalid
12
users. Take WPA2-PSK/TKIP for example.
Back to go previous. Next to continue. Cancel to close wizard.
5.3.4 Wizard-4
This page sets
PASSPHRASE
network key Security
settings
Back to go previous
Next to continue.
Cancel to close wizard.
5.3.5 Wizard-5
This page shows the
settings.
Back to go previous.
Next to continue.
Cancel to close wizard.
13
5.3.5 Wizard-6
Select device that
connects with internet.
Back to go previous.
Next to continue.
Cancel to close wizard.
5.3.5 Wizard-7
Show all settings under
AP mode. Click Finish
to complete wizard
setup.
5.4 AP Mode
There are General, Advanced,
Statistics and SoftAP pages
to do configure SSID, channel,
advanced wireless
parameters, statistics
counters and internet device
setup respectively.
14
Product Name
Wireless LAN 11g USB Adapter
Chipset
RTL8187B
Standard
IEEE 802.11b, IEEE 802.11g
Frequency Band
2.4GHz ~ 2.484GHz unlicensed ISM band
Spread Spectrum
Modulation
Data Rate
Operation Mode
IEEE 802.11b : DSSS
IEEE 802.11g : OFDM
IEEE 802.11b : DBPSK / DQPSK / CCK
IEEE 802.11g : BPSK, QPSK, 16QAM, 64QAM
IEEE 802.11b : 1, 2, 5.5, 11Mbps
IEEE 802.11g : 6, 9, 12, 18, 24, 36, 48, 54Mbps
Ad hoc, Infrastructure (Access Points is needed)
Transmitter Power 17 dBm @11b,
Receive
Sensitivity
Operating at
14 dbm @11g
11 Mbps: < –85 dBm @8% FER,
54 Mbps: < –68 dBm @8% FER
Operating Range 100 - 300m, depending on surrounding environment
Power
Consumption
Security
Transmit : around
428 mA.
Receive : around 387 mA.
64-bit or 128-bit WEP (Wired Equivalent Privacy) /
WPA/WPA2-PSK, WPA/WPA2-802.1x
TKIP/AES
I/O Interface
USB 2.0
LED
Green LED indicator
Operating System Windows 2000, XP, Vista, Mac, Linux Kernel 2.6
Regulation
FCC part 15B/C for North America, CE for Europe.
Operating
Temperature
0 ~ 55 celsius
Storage
Temperature
-20 ~ 70 celsius
Humidity
5 ~ 90% (non-condensing)
Size
76.5 (L) x 27 (W) x 10 (H) mm
Weight
14 g
15
Symptom :
The LED is off.
Remedy :
Make sure the PC Card is inserted properly. Otherwise contact your vendor.
Symptom :
The LED is always on not blinking.
Remedy :
Make sure that you have installed the driver from attached CD. Otherwise
contact your vendor.
Symptom :
The LED is blinking but the PC Card icon does not appear in your icon tray.
Remedy :
Make sure that you have installed the Utility from the attached CD.
Symptom :
The PC Card is linking, but can’t share files with others.
Remedy :
Make sure the file and printer sharing function is enabled. You can
enable the function by checking the icon of My Computer -> Control
Panel -> Network -> file and printer sharing -> I want to be able to give
others to access to my files.
Symptom :
Detect dongle slow while plugged in.
Remedy :
Try to upgrade USB1.1 to USB2.0.
Symptom :
Slow or poor performance under AP mode
Remedy :
Try to select another channel for the communicating group or move your
device closer to the Access Point.
16
IEEE 802.11 Standard
The IEEE 802.11 Wireless LAN standards subcommittee, which is formulating
a standard for the industry.
Access Point
An internetworking device that seamlessly connects wired and wireless
networks together.
Ad Hoc
An Ad Hoc wireless LAN is a group of computers, each with a WLAN
adapter, connected as an independent wireless LAN. Ad Hoc wireless LAN
is applicable at a departmental scale for a branch or SOHO operation.
BSSID
A specific Ad Hoc LAN is called a Basic Service Set (BSS). Computers in a
BSS must be configured with the same BSSID.
DHCP
Dynamic Host Configuration Protocol - a method in which IP addresses are
assigned by server dynamically to clients on the network. DHCP is used for
Dynamic IP Addressing and requires a dedicated DHCP server on the
network.
Direct Sequence Spread Spectrum
This is the method the wireless cards use to transmit data over the frequency
spectrum. The other method is frequency hopping. Direct sequence
spreads the data over one frequency range (channel) while frequency
hopping jumps from one narrow frequency band to another many
times per second.
ESSID
An Infrastructure configuration could also support roaming capability for
mobile workers. More than one BSS can be configured as an Extended
Service Set (ESS). Users within an ESS could roam freely between BSSs
while served as a continuous connection to the network wireless stations
and Access Points within an ESS must be configured with the same ESSID
and the same radio channel.
Ethernet
Ethernet is a 10/100Mbps network that runs over dedicated home/office
wiring. Users must be wired to the network at all times to gain access.
17
Gateway
A gateway is a hardware and software device that connects two dissimilar
systems, such as a LAN and a mainframe. In Internet terminology, a gateway
is another name for a router. Generally a gateway is used as a funnel
for all traffic to the Internet.
IEEE
Institute of Electrical and Electronics Engineers
Infrastructure
An integrated wireless and wired LAN is called an Infrastructure
configuration. Infrastructure is applicable to enterprise scale for wireless
access to central database, or wireless application for mobile workers.
ISM Band
The FCC and their counterparts outside of the U.S. have set aside bandwidth
for unlicensed use in the so-called ISM (Industrial, Scientific and
Medical) band. Spectrum in the vicinity of 2.4 GHz, in particular, is being
made available worldwide. This presents a truly revolutionary opportunity
to place convenient high-speed wireless capabilities in the hands of users
around the globe.
Local Area Network (LAN)
A LAN is a group of computers, each equipped with the appropriate network
adapter card connected by cable/air, that share applications, data,
and peripherals. All connections are made via cable or wireless media,
but a LAN does not use telephone services. It typically spans a single
building or campus.
Network
A network is a system of computers that is connected. Data, files, and
messages can be transmitted over this network. Networks may be local or
wide area networks.
Protocol
A protocol is a standardized set of rules that specify how a conversation
is to take place, including the format, timing, sequencing and/ or error
checking.
SSID
A Network ID unique to a network. Only clients and Access Points that
share the same SSID are able to communicate with each other. This string
is case-sensitive.
Static IP Addressing
A method of assigning IP addresses to clients on the network. In networks
18
with Static IP address, the network administrator manually assigns an IP
address to each computer. Once a Static IP address is assigned, a computer
uses the same IP address every time it reboots and logs on to the
network, unless it is manually changed.
Temporal Key Integrity Protocol (TKIP)
The Temporal Key Integrity Protocol, pronounced tee-kip, is part of the
IEEE 802.11i encryption standard for wireless LANs. TKIP is the next
generation of WEP, the Wired Equivalency Protocol, which is used to
secure 802.11 wireless LANs. TKIP provides per-packet key mixing, a
message integrity check and a re-keying mechanism, thus fixing the
flaws of WEP.
Transmission Control Protocol / Internet Protocol (TCP/IP)
TCP/IP is the protocol suite developed by the Advanced Research
Projects Agency (ARPA). It is widely used in corporate Internet works,
because of its superior design for WANs. TCP governs how packet is
sequenced for transmission the network. The term “TCP/IP” is often
used generically to refer to the entire suite of related protocols.
Transmit / Receive
The wireless throughput in Bytes per second averaged over two seconds.
Wi-Fi Alliance
The Wi-Fi Alliance is a nonprofit international association formed in 1999
to certify interoperability of wireless Local Area Network products based
on IEEE 802.11 specification. The goal of the Wi-Fi Alliance’s members is
to enhance the user experience through product interoperability. The
organization is formerly known as WECA.
Wi-Fi Protected Access (WPA)
The Wi-Fi Alliance put together WPA as a data encryption method for
802.11 wireless LANs. WPA is an industry-supported, pre-standard version
of 802.11i utilizing the Temporal Key Integrity Protocol (TKIP),
which fixes the problems of WEP, including using dynamic keys.
Wide Area Network (WAN)
A WAN consists of multiple LANs that are tied together via telephone
services and / or fiber optic cabling. WANs may span a city, a state, a
country, or even the world.
Wired Equivalent Privacy (WEP)
Now widely recognized as flawed, WEP was a data encryption method
used to protect the transmission between 802.11 wireless clients and
APs. However, it used the same key among all communicating devices.
19
WEP’s problems are well-known, including an insufficient key length and
no automated method for distributing the keys. WEP can be easily
cracked in a couple of hours with off-the-shelf tools.
Wireless LAN (WLAN)
A wireless LAN does not use cable to transmit signals, but rather uses
radio or infrared to transmit packets through the air. Radio Frequency
(RF) and infrared are the commonly used types of wireless transmission.
Most wireless LANs use spread spectrum technology. It offers limited
bandwidth, usually under 11Mbps, and users share the bandwidth with
other devices in the spectrum; however, users can operate a spread
spectrum device without licensing from the Federal Communications
Commission (FCC).
Fragment Threshold
The proposed protocol uses the frame fragmentation mechanism defined in
IEEE 802.11 to achieve parallel transmissions. A large data frame is
fragmented into several fragments each of size equal to fragment threshold.
By tuning the fragment threshold value, we can get varying fragment sizes.
The determination of an efficient fragment threshold is an important issue in
this scheme. If the fragment threshold is small, the overlap part of the master
and parallel transmissions is large. This means the spatial reuse ratio of
parallel transmissions is high. In contrast, with a large fragment threshold, the
overlap is small and the spatial reuse ratio is low. However high fragment
threshold leads to low fragment overhead. Hence there is a trade-off between
spatial re-use and fragment overhead.
Fragment threshold is the maximum packet size used for fragmentation.
Packets larger than the size programmed in this field will be fragmented If you
find that your corrupted packets or asymmetric packet reception (all send
packets, for example). You may want to try lowering your fragmentation
threshold. This will cause packets to be broken into smaller fragments. These
small fragments, if corrupted, can be resent faster than a larger fragment.
Fragmentation increases overhead, so you'll want to keep this value as close
to the maximum value as possible.
RTS (Request To Send) Threshold
The RTS threshold is the packet size at which packet transmission is governed
by the RTS/CTS transaction. The IEEE 802.11-1997 standard allows for short
packets to be transmitted without RTS/CTS transactions. Each station can
20
have a different RTS threshold. RTS/CTS is used when the data packet size
exceeds the defined RTS threshold. With the CSMA/CA transmission
mechanism, the transmitting station sends out an RTS packet to the receiving
station, and waits for the receiving station to send back a CTS (Clear to Send)
packet before sending the actual packet data. This setting is useful for
networks with many clients. With many clients, and a high network load, there
will be many more collisions. By lowering the RTS threshold, there may be
fewer collisions, and performance should improve. Basically, with a faster RTS
threshold, the system can recover from problems faster. RTS packets
consume valuable bandwidth, however, so setting this value too low will limit
performance.
Beacon Interval
In addition to data frames that carry information from higher layers, 802.11
includes management and control frames that support data transfer. The
beacon frame, which is a type of management frame, provides the "heartbeat"
of a wireless LAN, enabling stations to establish and maintain communications
in an orderly fashion. Beacon Interval represents the amount of time between
beacon transmissions. Before a station enters power save mode, the station
needs the beacon interval to know when to wake up to receive the beacon
(and learn whether there are buffered frames at the access point).
Preamble Type
There are two preamble types defined in IEEE 802.11 specification. A long
preamble basically gives the decoder more time to process the preamble. All
802.11 devices support a long preamble. The short preamble is designed to
improve efficiency (for example, for VoIP systems). The difference between
the two is in the Synchronization field. The long preamble is 128 bits, and the
short is 56 bits.
WPA2
It is the second generation of WPA. WPA2 is based on the final IEEE 802.11i
amendment to the 802.11 standard.
Temporal Key Integrity Protocol (TKIP)
The Temporal Key Integrity Protocol, pronounced tee-kip, is part of the IEEE
802.11i encryption standard for wireless LANs. TKIP is the next generation of
WEP, the Wired Equivalency Protocol, which is used to secure 802.11 wireless
21
LANs. TKIP provides per-packet key mixing, a message integrity check and a
re-keying mechanism, thus fixing the flaws of WEP.
802.1x Authentication
802.1x is a framework for authenticated MAC-level access control, defines
Extensible Authentication Protocol (EAP) over LANs (WAPOL). The standard
encapsulates and leverages much of EAP, which was defined for dial-up
authentication with Point-to-Point Protocol in RFC 2284.
Beyond encapsulating EAP packets, the 802.1x standard also defines EAPOL
messages that convey the shared key information critical for wireless security.
Advanced Encryption Standard (AES)
Security issues are a major concern for wireless LANs, AES is the U.S.
government’s next-generation cryptography algorithm, which will replace DES
and 3DES.
22
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