user manual

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Cisco Aironet 1200 Series Access Point Software Configuration Guide
OL-2159-05
Chapter 8 Security Setup
Setting Up WEP
Because the access point’s WEP key 1 is selected as the transmit key, WEP key 1 on the other device
must contain the same contents. WEP key 4 on the other device is set, but because it is not selected as
the transmit key, WEP key 4 on the access point does not need to be set at all.
Note If you enable MIC but you use static WEP (you do not enable any type of EAP authentication),
both the access point and any devices with which it communicates must use the same WEP key
for transmitting data. For example, if the MIC-enabled access point uses the key in slot 1 as the
transmit key, a client device associated to the access point must use the same key in its slot 1,
and the key in the client’s slot 1 must be selected as the transmit key.
The characters you type for the key contents appear only when you type them. After you click Apply or
OK, you cannot view the key contents. Select Not set from the Key Size pull-down menu to clear a key.
Step 5 Select Optional or Full Encryption from the pull-down menu labeled Use of Data Encryption by
Stations is.
Note You must set a WEP key before enabling WEP. The options in the Use of Data Encryption by
Stations is pull-down menu do not appear until you set a key.
The three settings in the drop-down menu include:
• No Encryption (default)—The access point communicates only with client devices that are not using
WEP. Use this option to disable WEP.
• Optional—Client devices can communicate with the access point either with or without WEP.
Note If you select Optional, Cisco Aironet client devices associating to the access point must be
configured to allow association to mixed cells. See the Cisco Aironet Wireless LAN Adapters
Software Configuration Guide for instructions on configuring Cisco Aironet client devices.
• Full Encryption—Client devices must use WEP when communicating with the access point. Devices
not using WEP are not allowed to communicate.
Note You must select Full Encryption to enable Message Integrity Check (MIC). See the
“Enabling Message Integrity Check (MIC)” section on page 8-10 for instructions on setting
up MIC.
Step 6 Click OK. You return automatically to the Security Setup page.
3
–
not set
–
not set
4
–
not set
–
FEDCBA09876543211234567890
Table 8-1 WEP Key Setup Example (continued)
Key
Slot
Access Point Associated Device
Transmit? Key Contents Transmit? Key Contents