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ASCII is the acronym for the
American Standard Code for Information Interchange
. Pronounced
ask-ee
, ASCII is a code for
representing English characters as numbers, with each letter assigned a number from 0 to 127. For example, the ASCII code
for uppercase
M
is 77. Most computers use ASCII codes to represent text, which makes it possible to transfer data from one
computer to another.
WPA
WPA is an upgrade to the WEP (Wired Equivalent Privacy) standard for securing your wireless network. WPA is derived from
and will be forward-compatible with the future IEEE 802.11i standard. It provides improved data encryption and user
authentication.
To enhance the level of security, WPA uses TKIP (Temporal Key Integrity Protocol) encryption to address the vulnerabilities of
the static keys used in WEP (Wired Equivalent Privacy). TKIP includes four algorithms: MIC (message integrity check), to
protect packets from tampering; PPK (Per-Packet Key) hashing, to prevent weak key attacks; extended IV (initialization vector),
to reduce IV reuse and the possibility that a hacker will collect sufficient packets to crack the encryption; and a re-keying
mechanism, to change the temporal key dynamically. TKIP is the most commonly used encryption method; however, if your
wireless clients do not support TKIP, TrueMobile 2300 also supports AES (Advanced Encryption Security) encryption. AES will
replace 802.11's RC4-based encryption under 802.11i specification. AES, the gold-standard encryption algorithm, provides
maximum security for wireless network.
For user authentication, WPA adopts an authentication scheme -- via 802.1x. 802.1x provides a framework for user
authentication and a key distribution management method. 802.1x consists of three main elements: an Authentication Server
(typically a RADIUS server), WPA-enabled router or AP (called "
Authenticator
"), and a WPA-enabled client (called
"
Supplicant
"). 802.1x ensures only authorized users can access the network.
In enterprises, WPA will be used in conjunction with both wireless router and authentication server. In Small Office/ Home
Office (SOHO) environment, where there are no authentication server, users can use pre-shared key (PSK) mode in place of
the authentication server. TrueMobile 2300 offers you WPA running in PSK mode. The mutual authentication and improved
encryption technology of WPA allows wireless communication to achieve greater security.
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Automatic Rate Selection and Rate Scaling
In 802.11g, wireless network adapters and access points can transmit data at one of the following rates: 54, 48, 36, 24, 18, 12,
9, or 6 Mbps. In 802.11b, the data can be transmitted at a rate of 11, 5.5, 2, or 1 Mbps. As the distance between an adapter
and access point increases or decreases, the data rate automatically changes. Other factors, like interference, also affect the
data rate. The Wireless Broadband Router uses automatic rate selection and rate scaling to determine the most efficient rate of
communication. Rate scaling maintains optimal communication between wireless clients and the WLAN.
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A Look at the Hardware: Dell™ TrueMobile™ 2300 Wireless
Broadband Router User's Guide
Front Panel
Back Panel
Front Panel
The Dell TrueMobile 2300 Wireless Broadband Router has seven
Light Emitting Diodes
(LEDs), or link lights, on its front side.
The following table defines the behavior for each LED:
LED
Represents
Activity
Power
Power
The Power LED will light up when the device is powered on. It will blink when the
device is reset.
Wireless
Wireless
LAN
Steady on when there is at least one wireless link connecting to the unit.
Internet
DSL or
Steady green light indicates the connection is active, blinks with data activity.
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cable
modem
Steady amber light indicates data collision.
LAN 1
LAN 2
LAN 3
LAN 4
Local Area
Network
Steady green light indicates the connection is active and transfer rate is at 100Mbps.
Steady greenish amber light indicates the connection is active and transfer rate is at
10Mbps.
Table 1. Dell TrueMobile 2300 Wireless Broadband Router LEDs
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Back Panel
Connector
Description
Lock
Accept locking devices for protecting the device from theft.
Reset
Use an object, such as a stretched paper clip, to press the button for at least 3 seconds. Power
LED will be off for a short time and then light up again. You can release the button now to to reset
the device to its factory-default settings.
Internet
Accept an RJ-45 connector for network cabling.
LAN 1
LAN 2
LAN 3
LAN 4
Accept an RJ-45 connectors for connecting up to 4 PCs to the gateway's 4-port switch.
Power
Connect the power adapter to this Power port, and then plug the other end of the power cable into
a power outlet.
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Setup Wizard: Dell™ TrueMobile™ 2300 Wireless Broadband
Router User's Guide
Introduction
Launch the Setup Wizard
Setup Wizard Screens
Introduction
Setup Wizard is an easy-to-use program included on your TrueMobile 2300 CD. It provides simplified configuration procedures
for establishing Internet connectivity on the Wireless Broadband Router. The Setup Wizard first extracts the connection settings
from your active ISP connection on your PC with Cable/DSL modem. It then displays a series of graphical illustrations on how
to connect the router to the network. Finally it applies the extracted settings on your router and validate its installation.
If the
installation cannot be completed successfully, the Setup Wizard will display troubleshooting instructions to guide you through
the installation process.
In addition, the Setup Wizard also provides links to the User's Guide on the TrueMobile 2300 CD and also the Dell support
website.
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Launch the Setup Wizard
To run the setup wizard, complete the following steps.
1. Insert the
TrueMobile 2300 Wireless Broadband Router Setup Wizard and User Guide CD
that came with the package
into the CD-ROM drive on your computer. Your CD should automatically launch the
Setup Wizard
program. If it does
not, complete the following steps to start the
Wizard
.
a. On your computer, go to
Start
>
Run
.
b. Type x:\setup.exe (where "x" is the drive letter of your CD-ROM drive)
Once the Setup Wizard has been launched, you will be guided through a series of windows. These windows are illustrated
below along with an explanation on their functionalities.
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Setup Wizard Screens
Welcome Menu
This menu offers several options to select from.

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