User manual

Chapter 2: Basic Checkout
Configuring An IEEE 802.11 Radio
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Psion Teklogix 8525/8530 Vehicle-Mount Computer User Manual
Encryption
WEP (Wired-Equivalent Privacy) encryption prevents others from acciden-
tally accessing your network. If you are not using encryption, you can
choose ‘Disabled’ from the dropdown encryption menu. Otherwise, leave
this field as is.
Authentication
802.11 supports a number of subtypes of network authentication services:
Open, Shared, WPA and WPA-PSK.
Using Open authentication, any wireless station can request authentication.
The station that needs to authenticate with another wireless station sends an
authentication management frame that contains the identity of the sending
station. The receiving station then sends back a frame that indicates whether
it recognizes the identity of the sending station.
Using Shared authentication, each wireless station is assumed to have
received a secret shared key over a secure channel that is independent from
the 802.11 wireless network communications channel.
WPA (Wi-Fi Protected Access) uses the Temporal Key Integrity Protocol
(TKIP) to provide strong data encryption, and offers two user authentica-
tion and key management methods.
The first method of user authentication is intended for environments using a
centralized Authentication Server, such as RADIUS. User authentication is
based on IEEE 802.1X and mutual authentication based EAP.
In environments where a centralized Authentication Server or EAP frame-
work is not available, user authentication is based on a ‘Pre-Shared Key’
method – WPA-PSK. If you are using Pre-Shared Key authentication, you
will need to manually enter a password (Master Key) in the Access Point or
Wireless Router and enter the same password in each client device that
accesses the wireless network. The manually configured WPA password
(Master Key) automatically starts the TKIP data encryption process.