Symbol PDT 8000, Руководство по продукции

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9-16
PDT 8000 Series with Windows
®
Mobile 2003 Software for Pocket PCs Product Reference Guide
The AP and the terminal 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.
If an AP is set to 40-bit and an adapter is set to 128-bit, the adapter can associate
to the AP, but no data transmission and reception can take place.
Table 9-6. Encryption Tab Fields
Encryption Description
Open System Use the Open System option as the default setting when no data packet
encryption is needed over the network. Selecting this option provides no
security for the data being transmitted over the network. The window
displays only the OK and Cancel buttons.
WEP Select WEP for the adapter to use the WEP keys for encryption. The
window displays several radio buttons and edit buttons to configure the
WEP keys. Select 40-bit or 128-bit key lengths (128-bit is the default).
WEP keys are manually entered in the edit boxes. Only the required
number of edit boxes for a key length is displayed (10 Hex digit value for
40-bit keys, 26 Hex digit values for 128-bit keys). Use the Key radio
buttons to configure the four WEP keys. The adapter uses the selected
key. Tap ResetKeys 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 access point is using an optional Passkey, the "active"
adapter WLAN profile is required to use one as well. The Passkey is a
plain text representation of the WEP keys displayed in the Encryption
property window. 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.
Tap Passkey to display the Passkey screen. Enter an easy-to-remember
4 to 32 character string to be used as the WEP algorithm. Click OK. The
access point transforms the Passkey string into a set of four WEP keys
using MD5 algorithms and displays them in the WEP fields. These are the
new WEP keys for the adapter profile. Once displayed in the WEP key
fields, the adapter profile behaves as if the keys were entered manually.