User manual ZYXEL ZYAIR G-200

[. . . ] ZyAIR G-200 802. 11g Wireless USB Adapter User's Guide Version 1. 1 April 2004 ZyAIR G-200 User's Guide Copyright Copyright ©2004 by ZyXEL Communications Corporation The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of ZyXEL Communications Corporation. All rights reserved. Disclaimer ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. Neither does it convey any license under its patent rights nor the patents' rights of others. ZyXEL further reserves the right to make changes in any products described herein without notice. [. . . ] A wireless station sends a shared key authentication request to the AP, which will then reply with a challenge text message. The wireless station must then use the AP's default WEP key to encrypt the challenge text and return it to the AP, which attempts to decrypt the message using the AP's default WEP key. If the decrypted message matches the challenge text, the wireless station is authenticated. When your ZyAIR's authentication method is set to open system, it will only accept open system authentication requests. However, when it is set to auto authentication, the ZyAIR will accept either type of authentication request and the ZyAIR will fall back to use open authentication if the shared key does not match. Using the ZyAIR Utility 2-9 ZyAIR G-200 User's Guide Figure 2-10 WEP Authentication Follow the instructions in the table to configure the WEP encryptions. Table 2-4 WEP Authentication FIELD Authentication Encryption DESCRIPTION Select WEP from the drop-down list box to activate WEP Authentication. Select either 64 Bits or 128 Bits from the drop-down list box to activate WEP encryption and then fill in the related fields. Select Disabled to deactivate the WEP encryption. WEP Key Entry: The WEP keys are used to encrypt communication before transmitting. The values for the keys must be set up exactly the same on the APs or other peer adhoc wireless computers as they are on the ZyAIR. Authentication Type Select Open System or Shared Key from the drop-down list box. See the section on Authentication Type for further descriptions of these. Select Open System to allow any station to gain access to the network. Select Shared Key if you want the ZyAIR to automatically generate four different WEP keys based on the passphrase specified in the Passphrase field. As you enter the Passphrase, the ZyAIR automatically generates four different WEP keys and displays them in the key fields below. Write down the automatically generated WEP keys and use them to manually set the WEP keys in other WLAN adapters. If you select ASCII characters as the Key Type, the Passphrase screen will be grayed out. For more information on Passphrase, see section 2. 6. 1. Passphrase 2-10 Using the ZyAIR Utility ZyAIR G-200 User's Guide Table 2-4 WEP Authentication FIELD Transmit Key DESCRIPTION Enter the key number (1 to 4) in this field. This key must be the same on the ZyAIR and the wireless stations to communicate. Select this option if you want the ZyAIR to automatically generate four different WEP keys based on the passphrase specified in the Passphrase field. Enter either 10 hexadecimal digits in the range of "A-F", "a-f" and "0-9" (e. g. 11AA22BB33) for hexadecimal key type or Enter 5 ASCII characters (case sensitive) ranging from "a-z", "A-Z" and "09" (e. g. If you select 128 Bits in the Encryption (WEP) field, Enter either 26 hexadecimal digits in the range of "A-F", "a-f" and "0-9" (for example, 00112233445566778899AABBCC) for hexadecimal key type or Enter 13 ASCII characters (case sensitive) ranging from "a-z", "A-Z" and "09" (for example, MyKey12345678) for ASCII key type. Key Type You must configure all four WEP keys the first time you use the ZyAIR. ASCII WEP keys are case sensitive. OK Click OK to apply the changes and close the screen. 2. 6. 2 Data Encryption with WPA Select WPA from the Authentication drop-down list box to view the security configuration options. Introduction to WPA Wi-Fi Protected Access (WPA) is a subset of the IEEE 802. 11i security specification draft. [. . . ] B DSSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A E EAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 ESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2, B Extended Service Set. . . . . . . . . . . . . . . . . . . . . . . See ESS Extensible Authentication Protocol . . . . . . See EAP F Federal Communications Commission (FCC) Interference Statement. . . . . . . . . . . . . . . . . v FHSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A Frequency Hopping Spectrum . . . . . . [. . . ]