Cisco Aironet 340 Series Installation And Configuration Manual page 44

Using Static WEP
Figure 4-4
This screen allows you to create up to four static WEP keys.
Step 2 For the static WEP key that you are entering (1, 2, 3, or 4), select a WEP key size of 40 or 128 on the
right side of the screen. 128-bit client adapters can use 40- or 128-bit keys, but 40-bit adapters can use
only 40-bit keys. If 128 bit is not supported by the client adapter, this option is grayed out, and you are
unable to select it.
Step 3 Obtain the static WEP key from your system administrator and enter it in the blank field for the key you
are creating. Follow the guidelines below to enter a new static WEP key:
WEP keys can consist of the following hexadecimal characters: 0-9, A-F, and a-f.
•
• WEP keys must contain the following number of characters:
–
–
• Your client adapter's WEP key must match the WEP key used by the access point (in infrastructure
mode) or clients (in ad hoc mode) with which you are planning to communicate.
• When setting more than one WEP key, the keys must be assigned to the same WEP key numbers for
all devices. For example, WEP key 2 must be WEP key number 2 on all devices. When multiple
WEP keys are set, they must be in the same order on all devices.
Note
Step 4 Click the Transmit Key button to the left of the key you want to use to transmit packets. Only one WEP
key can be selected as the transmit key.
Step 5 Click OK to write your WEP key(s) to the client adapter's volatile memory and the Windows CE registry
and to exit the utility or click Cancel to exit the utility without updating the keys.
Step 6 Double-click the Cisco ACU icon or select Start > Programs > Cisco > Aironet Client Utility. The
ACU screen appears (see
Cisco Aironet Wireless LAN Client Adapters Installation and Configuration Guide for Windows CE
4-8
CEM Screen
10 hexadecimal characters for 40-bit keys
Example: 12345abcde
26 hexadecimal characters for 128-bit keys
Example: AB34CD78EFab01cd23ef456789
After you enter a WEP key, you can write over it, but you cannot edit or delete it.
Figure 4-5).
Chapter 4 Enabling Security Features
OL-1375-02