User’s Manual for the NETGEAR Double 108 Mbps Wireless PC Card 32-bit CardBus WG511U
B-8 Wireless Networking Basics
August 2004
Figure B-2: 802.11 open system authentication
The following steps occur when two devices use Open System Authentication:
1. The station sends an authentication request to the access point.
2. The access point authenticates the station.
3. The station associates with the access point and joins the network.
The WEP Shared Key authentication process is illustrated in below.
Figure B-3: 802.11 shared key authentication
The following steps occur when two devices use Shared Key Authentication:
1. The station sends an authentication request to the access point.
INTERNET LOCAL
ACT
12345678
LNK
LNK/ACT
100
Cable/DSL
ProSafeWirelessVPNSecurityFirewall
MODEL
FVM318
PWR TEST
WLAN
Enable
Access Point (AP)
1) Authentication requestsent toAP
2) APauthenticates
3) Clientconnects to network
802.11 Authentication
Open System Steps
Cableor
DLSmodem
Client
attempting
to connect
INTERNET LOCAL
ACT
12345678
LNK
LNK/ACT
100
Cable/DSL
ProSafeWirelessVPNSecurityFirewall
MODEL
FVM318
PWR TEST
WLAN
Enable
Access Point (AP)1) Authentication
request sentto AP
2) APsends challengetext
3) Clientencrypts
challenge text and
sends itback to AP
4) APdecrypts,andif correct,
authenticates client
5) Clientconnects to network
802.11 Authentication
Shared Key Steps
Cableor
DLSmodem
Client
attempting
to connect
