Cisco AP541N-A-K9 Administration Guide - Page 67

Wireless Modifying Virtual Access Point Settings 4 If you use Static WEP, the following rules apply: • All client stations must have the Wireless LAN (WLAN) security set to WEP, and all clients must have one of the WEP keys specified on the access point in order to de-code AP-to-station data transmissions. • The access point must have all keys used by clients for station-to-AP transmit so that it can de-code the station transmissions. • The same key must occupy the same slot on all nodes (access point and clients). For example if the access point defines abc123 key as WEP key 3, then the client stations must define that same string as WEP key 3. • Client stations can use different keys to transmit data to the access point. (Or they can all use the same key, but this is less secure because it means one station can decrypt the data being sent by another.) • On some wireless client software, you can configure multiple WEP keys and define a client station "transfer key index", and then set the stations to encrypt the data they transmit using different keys. This ensures that neighboring access points cannot decode each other's transmissions. • You cannot mix 64-bit and 128-bit WEP keys between the access point and its client stations. Table 12 describes the WEP fields. Table 12 WEP Field Descriptions Field Description Transfer Key Index Select a key index from the drop-down menu. Key indexes 1 through 4 are available. The default is1. Key Length The transfer key index indicates which WEP key the access point will use to encrypt the data it transmits. Specify the length of the key by clicking one of the radio buttons: • 64 bits • 128 bits Cisco AP 541N Dual-band Single-radio Access Point Quick Start Guide 64