NETGEAR WPN311 - Manual (Page 55)

User Manual for the NETGEAR RangeMax™ Wireless PCI Adapter WPN311
W ire le ss N e tworkin g B a sics B -5
Figure 5-2: 802.11 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 802.11 device decrypts the data using
the same WEP Key. For authentication purposes, the 802.11 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 802.11 device
decrypts the data using the same WEP Key. For authentication purposes, the 802.11 network uses
Shared Key Authentication.
Note: Some 802.11 access points also support Use WEP for Authentication Only (Shared Key
Authentication without data encryption).
I N TER N ET LO C A L
ACT 1 2 3 4 5 6 7 8
LNK LNK/ACT 100 Cable/DSL ProSafe Wireless VPN Security Firewall MODEL FVM318
PWR TEST
W LA N
Enable
Access Point (AP)
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
802.11 Authentication
Shared Key Steps
Cable or
DLS modem Client
attempting
to connect