Psion Teklogix 9160 G2 Benutzerhandbuch

To build on our example, using Funk Odyssey client software you could give each 
of the clients WEP key 3 so that they can decode the AP transmissions with that key 
and also give client 1 WEP key 1 and set this as its transfer key. You could then give 
client 2 WEP key 2 and set this as its transfer key index.

Figure 10.9 illustrates the dynamics of the AP and two client stations using multiple 
WEP keys and a transfer key index.

Figure 10.9 Example Of Using Multiple WEP Keys And Transfer Key Index On Client Stations

10.2.5  IEEE 802.1x

IEEE 802.1x is the standard defining port-based authentication and infrastructure 
for doing key management. Extensible Authentication Protocol (EAP) messages 
sent over an IEEE 802.11 wireless network using a protocol called EAP Encapsula-
tion Over LANs (EAPOL). IEEE 802.1x provides dynamically-generated keys that 
are periodically refreshed. An RC4 stream cipher is used to encrypt the frame body 
and cyclic redundancy checking (CRC) of each 802.11 frame.

This mode requires the use of a RADIUS server to authenticate users. If the option 
for the internal RADIUS server is enabled, configure user accounts on the AP via 
the Cluster > User Management tab. Otherwise configure user accounts on the 
external RADIUS server.

The access point requires a RADIUS server capable of EAP, such as the Microsoft 
Internet Authentication Server or the 9160 G2 Wireless Gateway internal authenti-
cation server. To work with Windows clients, the authentication server must support 
Protected EAP (PEAP) and MSCHAP V2.

When configuring IEEE 802.1x mode, you have a choice of whether to use the 
embedded RADIUS server or an external RADIUS server that you provide. The 

Access Point transmits to both stations with same WEP key

Client Station 1

Client Station 2

(e.g., WEP key 3)

WEP

 key

 3

WEP key 3

WEP key 2

WEP

 key 

1

can decrypt WEP key 3
transmits in WEP key 1

can decrypt WEP key 3
transmits in WEP key 2