NETGEAR WG511U Network Manual page 8

User's Manual for the NETGEAR Double 108 Mbps Wireless PC Card 32-bit CardBus WG511U
1) Authentication request sent to AP
3) Client connects to network
Client
attempting
to connect
Figure B-2: 802.11 open system authentication
The following steps occur when two devices use Open System Authentication:
The station sends an authentication request to the access point.
1.
The access point authenticates the station.
2.
The station associates with the access point and joins the network.
3.
The WEP Shared Key authentication process is illustrated in below.
802.11 Authentication
1) Authentication
request sent to AP
Client
3) Client encrypts
attempting
challenge text and
to connect
sends it back to AP
5) Client connects to network
Figure B-3: 802.11 shared key authentication
The following steps occur when two devices use Shared Key Authentication:
The station sends an authentication request to the access point.
1.
B-8
802.11 Authentication
Open System Steps
2) AP authenticates
Shared Key Steps
2) AP sends challenge text
4) AP decrypts, and if correct,
authenticates client
August 2004
Access Point (AP)
MODEL FVM318
IN TER N ET W LA N LO CA L
Cable/DSL ProSafe Wireless VPN Security Firewall
LNK 100
PWR TEST
ACT Enable LNK/ACT
1 2 3 4 5 6 7 8
Cable or
DLS modem
Access Point (AP)
MODEL FVM318
IN TER N ET W LA N LO CA L
Cable/DSL ProSafe Wireless VPN Security Firewall
LNK 100
PWR TEST
ACT Enable LNK/ACT
1 2 3 4 5 6 7 8
Cable or
DLS modem
Wireless Networking Basics