Symbol MC9000-G Product Reference Manual page 170
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6-8
MC9000-G for Embedded Windows® CE .NET Product Reference Guide
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 a mobile computer is set to
40-bit or 128-bit, no association takes place. Similarly, if a mobile computer is set to Open
System and an AP is set to 40-bit or 128-bit, no association takes place.
If an AP is set to 40-bit and a mobile computer is set to 128-bit the mobile computer can
associate to the AP, but no data transmission and reception can take place.
7. Select one of the following Encryption options from the Algorithm: drop-down list:
Open System
(no encryption)
40-bit Shared Key
128-bit Shared Key
Use the Open System option as the default setting when no data packet encryption
is needed over the network. Selecting Open System provides no security for the data
being transmitted over the network.
Select 40-bit encryption and enter a 10-digit hex encryption key. Tap Reset Keys to
set the encryption key to the default values.
Select 128-bit encryption and enter a 26-digit hex encryption key. Enter the passkey
used when the AP was configured so that the passkeys match on both the mobile
computer and AP ends. The 128-bit encryption option provides a higher level of
security than 40-bit encryption while maintaining an 11 Mbps data rate. Tap Reset
Keys to set the encryption key to the default values.
Note: The default hex digit keys are visible any time they are used. As a security
precaution after setting the key values for the network, the digits are replaced with
asterisks (*) within the encryption key fields.
If the associated AP is using an optional Passkey, the "active" mobile computer
profile is required to use one as well. The Passkey is a plain text representation of
the WEP keys displayed in the Encryption tab. The Passkey provides an easy way to
enter WEP key data without having to remember the entire 40-bit (10 character) or
128-bit (26 character) hex digit string.
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