Cisco Systems DL-2159-05 manual Not set

Chapter 8 Security Setup

Setting Up WEP

Table 8-1 WEP Key Setup Example (continued)

Key	Access Point		Associated Device
Slot	Transmit?	Key Contents	Transmit?	Key Contents
3	–	not set	–	not set
4	–	not set	–	FEDCBA09876543211234567890

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 8-10for instructions on setting up MIC.

Step 6 Click OK. You return automatically to the Security Setup page.

Cisco Aironet 1200 Series Access Point Software Configuration Guide

OL-2159-05 8-9