User manual NOKIA D211

[. . . ] User's Guide Issue 2 DECLARATION OF CONFORMITY We, NOKIA CORPORATION declare under our sole responsibility that the product DTE-1 is in conformity with the provisions of the following Council Directive: 1999/5/EC. A copy of the Declaration of Conformity can be found from http://www. nokia. com/phones/declaration_of_conformity/ Copyright © Nokia Corporation 2002-2004. Reproduction, transfer, distribution or storage of part or all of the contents in this document in any form without the prior written permission of Nokia is prohibited. Nokia and Nokia Connecting People are registered trademarks of Nokia Corporation. [. . . ] WEP uses the RC4 algorithm with an up to 152-bit key. The algorithm provides for security via two methods: authentication and encryption. Authentication is the means by which one wireless station is verified to have authorisation to communicate with a second station in a given coverage area. In the infrastructure operating mode, authentication is established between a WLAN access point and each wireless station. If a wireless station receives a packet that has not been scrambled with a correct key, the packet is discarded. Encrypted messages can be opened by other radio cards only if they all use the same encryption key. In the ad hoc operating mode, authentication is established between each wireless station. The level of security is dependent on the length of the key: the more bits there are in the key, the longer it takes to decrypt the information sent and the higher the level of security. WEP keys consist of a secret key and a 24-bit Initialization Vector. For example, the 128-bit WEP key has a 104-bit secret key that the user can set, and a 24-bit Initialization Vector that cannot be controlled by the user. Many manufacturers 42 © Nokia Corporation 2004. All rights reserved. Nokia D211 features refer to this 128-bit key as a 128-bit key, whereas some refer to it as a 104-bit key (104+24). Both keys offer the same level of encryption and are therefore interoperable. Tip: Regardless of how the WEP keys have been named, all keys are compatible as long as their length is the same. For example, keys that are 40 bits long, always consist of 5 alphanumeric characters or 10 hexadecimal characters. The Nokia D211 supports three key lengths: 40 (40+24), 128 (104+24), and 152 (128+24) bits. The 40-bit key is Wi-Fi (Wireless Fidelity) compatible. There are two types of WEP keys: shared keys and personal keys. Shared WEP keys Shared WEP keys are shared by all wireless stations using the network or subnetwork; only stations that have the correct key can receive and decrypt data. The same key is loaded into the WLAN access point. Shared keys are usually created by system administrators, who distribute them to users. Shared keys are network-specific, and each network can have a maximum of four different shared keys. [. . . ] 54 resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 U uninstalling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 66 © Nokia Corporation 2004. All rights reserved. LIMITED MANUFACTURER'S WARRANTY PART OF EUROPE & AFRICA REGION This limited warranty shall apply in part of Nokia Mobile Phones' Europe & Africa Region unless a local warranty exists. [. . . ]