A wireless network is a group of computers and associated devices that share a common wireless
communication link over radio waves. A wireless network is enabled by a collection of wireless
access points residing within a small geographic area, such as in an office building or wireless
fidelity (Wi-Fi) public hotspot.
WLANs enable a variety of mobile transactions such as Internet and e-mail access, and
sophisticated tasks such as allowing sales people to access customer records from customer
TKIP/AES enhance the encryption methods of the 802.11 standards of WPA. These enhancements
• Improved data encryption for WPA (It provides more secured data encryption then WEP.)
• WPA allows simpler passphrases, based on preconfigured WEP keys (If you configure a
passphrase for your access points, you cannot use 802.1x-based authentication. You must also
use the same passphrase in Odyssey Client.)
Wireless fidelity (Wi-Fi)
Wi-Fi, also known as 802.11, is a communication standard created by the Institute of Electrical and
Electronic Engineers (IEEE). The 802.11 standard defines the electrical and radio frequency
components of a wireless Ethernet.
This standard also defines an encryption algorithm (Wired Equivalent Privacy, or WEP) to secure
the network. The Wi-Fi Alliance is the body that ensures compatibility and is responsible for issuing
standard compliance tests and logos.
Wi-Fi hotspots are WLANs that use the IEEE 802.11 protocol to establish wireless connections for
general public use. Offered to customers by a growing number of hotels, restaurants, airport
lounges, coffee shops and other businesses, Wi-Fi hotspots enable users to access Internet
resources, send and receive e-mail, use instant messaging, and perform similar tasks they would
otherwise perform on their business or home PCs. Before trying to connect to a wireless network at
a public Wi-Fi hotspot, it is a good idea to find out what setting information you will need to connect
to their network. Many Wi-Fi hotspots charge their customers a fee for this service.
Convenience and increased productivity make Wi-Fi hotspots attractive to users on the go, but
hotspots can also increase the possibility of security risks. The security risks are manageable;
however, if safety precautions are taken.
You can find out more information about Wi-Fi features and connections in the documentation on
IEEE wireless standards such as 802.11 have undergone many improvements and addendums
since they were first defined. The following list offers a high-level description of each of the better
• 802.11, which operates in the 2.4-GHz frequency band and offers only 2 megabits per
second (Mbit/s) of overall throughput, was the original implemented standard.
• 802.11b is the most widely used form of Wi-Fi today. The radio operates within the 2.4-Ghz
frequency band but allows a maximum data throughput of 11 Mbit/s.
• 802.11a is a short-range, but extremely high-speed, Wi-Fi network. This standard is not
compatible with existing 802.11b networks. This high-speed Wi-Fi network operates in the 5-Ghz
frequency band and can transfer data at a maximum speed of 54 Mbit/s.
• 802.11g is compatible with existing 802.11b networks, but also enables higher speeds. Its
maximum speed is 54 Mbit/s, but 802.11g operates in the 2.4-Ghz frequency band.
CD that came with your HP iPAQ.