Netgear WG102 User Manual download pdf (Page 78)

Reference Manual for the NETGEAR WG102 ProSafe 802.11g Wireless Access Point

B-4 Wireless Networking Basics

October 2004

The access point authenticates the station.

3. The station associates with the access point and joins the network.

This process is illustrated below.

Figure B-1: Open system authentication

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.

2. The access point sends challenge text to the station.

3. The station uses its configured 64-bit or 128-bit default key to encrypt the challenge text, and

sends the encrypted text to the access point.

4. The access point decrypts the encrypted text using its configured WEP Key that corresponds

to the station’s default key. The access point compares the decrypted text with the original

challenge text. If the decrypted text matches the original challenge text, then the access point

and the station share the same WEP Key and the access point authenticates the station.

5. The station connects to the network.

If the decrypted text does not match the original challenge text (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 below.

INTERNET LOCAL

ACT

12345678

LNK

LNK/ACT

100

Cable/DSL

ProSafeWirelessVPN SecurityFirewall

MODEL

FVM318

PWR TEST

WLAN

Enable

Access Point

1) Authentication request sent to AP

2) AP authenticates

3) Client connects to network

802.11b Authentication

Open System Steps

Cable or

DLS modem

Client

attempting

to connect

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Netgear WG102 User Manual Page 78

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