Overview Of Wep Parameters; Key Size - NETGEAR WGT624 Reference Manual

This process is illustrated below.
Authentication Steps
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 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 network uses Open System Authentication.
3. Use WEP for Authentication and 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 Shared Key
Authentication.
Note: Some 802.11 access points also support Use WEP for Authentication Only (Shared Key
Authentication without data encryption).
Wireless Networking Basics
Reference Manual for the 108 Mbps Wireless Firewall Router WGT624 v3
Shared Key
2) AP sends challenge text
4) AP decrypts, and if correct,
authenticates client
202-10090-01, April 2005
Access Point
MODEL FVM318
IN TER N ET W LA N LO CA L
Cable/DSL ProSafeWirelessVPN Security Firewall
LNK 100
PWR TEST
ACT Enable LNK/ACT
1 2 3 4 5 6 7 8
Cable or
DLS modem
D-5