Spectrum24 Configuration
5-7
5. Select the country of operation for the mobile computer from the Country: drop-down list.
This ensures the mobile computer is using country code information compatible with the
country code data used by the associated AP. Select International if using the mobile
computer with a non-Symbol AP or a pre AP-4131 model.
6. Select the Encryption tab to set the mobile computer profile security level.
Figure 5-4. Encryption Tab
The mobile computer supports Open System (no encryption), 40-bit Shared Key, 128-bit
Shared Key, Kerberos and LEAP encryption algorithms. The absence of a physical connection
makes wireless links vulnerable to information theft. Encryption is an efficient method of
preventing data theft and improving data security.
The AP and the mobile computer are required to use the same encryption algorithm to
associate and transmit data. If an AP is set to Open System and an adapter is set to 40-bit
or 128-bit, no association takes place. Similarly, if an adapter is set to Open System and an
AP is set to 40-bit or 128-bit, no association takes place.
Ad Hoc Select Ad Hoc to enable the mobile computer to form its own local
network where mobile computers communicate peer-to-peer
without APs using a shared ESSID. Select the Long preamble check
box if the mobile computer and its profile are using a long preamble
when transmitting data. A long preamble is approximately 8 bytes
of the packet header attached to the packet prior to transmission.
Devices in Ad Hoc mode are required to use the same preamble
length to interoperate. The mobile computer initiating the Ad Hoc
network sets the channel (using the Channel drop-down list) used by
each peer in the Ad Hoc network.
