Psion Teklogix 7535 G2 User Manual page 53

Important: Keep in mind that the 7535 G2 will only communicate with access points
that are configured with the same SSID.
Ad Hoc And Infrastructure
If you are using an Infrastructure network—one in which 7535 G2s must pass data
through an access point—leave the checkbox next to This is an ad hoc network blank.
If you are using an Ad Hoc network—a network in which 7535 G2s pass data directly to
other 7535 G2s without an access point—highlight This is an ad hoc network, and add a
checkmark in the checkbox to enable Ad Hoc.
Encryption
WEP (Wired-Equivalent Privacy) encryption prevents others from accidentally access-
ing your network. If you are not using encryption, you can choose Disabled from the
drop-down encryption menu. Otherwise, leave this field as is.
Note: WEP cannot be disabled if you are using WPA or WPA-PSK authentication.
TKIP (Temporal Key Integrity Protocol) is an encryption protocol included as part of
the IEEE 802.11 standard for wireless LANs. Designed to enhance WEP, TKIP uses the
original WEP encryption but 'wraps' additional code at the beginning and end to encap-
sulate and modify it, encrypting each data packet with a unique encryption key.
Authentication
802.11 supports four subtypes of network authentication services: Open, Shared, WPA,
and WPA-PSK. Under Open authentication, any wireless station can request authentica-
tion. 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 iden-
tity of the sending station.
Under 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.
Under WPA and WPA-PSK authentication, the use of 802.1x authentication is required.
For wireless networks without a Remote Authentication Dial-In User Service
(RADIUS) infrastructure, WPA supports the use of a preshared key. For wireless net-
works with a RADIUS infrastructure, Extensible Authentication Protocol (EAP) and
RADIUS is supported.
Configuring An IEEE 802.11 Radio In The Unit
Psion Teklogix 7535 G2 Hand-Held Computer User Manual
Chapter 2: Basic Checkout
23