Netgear WGR614v3 Manuel D’Utilisation

Page de 146
Reference Manual for Cable/DSL Wireless Router WGR614 
Wireless Networking Basics
D-5
 
5.
The station connects to the network.
If the decrypted text does not match the original challenge text (i.e., the access point and station do 
not share the same WEP Key), then the access point will refuse to authenticate the station and the 
station will be unable to communicate with either the 802.11 network or Ethernet network.
This process is illustrated in below.
Figure 7-5:  Shared key authentication
Overview of WEP Parameters
Before enabling WEP on an 802.11 network, you must first consider what type of encryption you 
require and the key size you want to use. Typically, there are three WEP Encryption options 
available for 802.11 products:
1. Do Not Use WEP: The 802.11 network does not encrypt data. For authentication purposes, the 
network uses Open System Authentication.
2. Use WEP for Encryption: A transmitting 802.11 device encrypts the data portion of every 
packet it sends using a configured WEP Key. The receiving device decrypts the data using the 
same WEP Key. For authentication purposes, the wireless network uses Open System 
Authentication.
IN TER N ET
LO CA L
ACT
1
2
3
4
5
6
7
8
LNK
LNK/ACT
100
Cable/DSL
ProSafeWirelessVPN Security Firewall
MODEL
FVM318
PWR
TEST
W LA N
Enable
Access Point
1) Authentication
request sent to AP
2) AP sends challenge text
3) Client encrypts
challenge text and
sends it back to AP
4) AP decrypts, and if correct,
authenticates client
5) Client connects to network
Shared Key
Authentication Steps
Cable or
DLS modem
Client
attempting
to connect