User manual LINKSYS BEFW11S4-AT

[. . . ] Instant WirelessTM Series Wireless Access Point Router with 4-Port Switch Use this Guide to install: BEFW11S4-AT User Guide COPYRIGHT & TRADEMARKS Copyright © 2002 Linksys, All Rights Reserved. Microsoft, Windows, and the Windows logo are registered trademarks of Microsoft Corporation. All other trademarks and brand names are the property of their respective proprietors. LIMITED WARRANTY Linksys guarantees that every Instant WirelessTM Wireless Access Point Router with 4-Port Switch is free from physical defects in material and workmanship for one year from the date of purchase, when used within the limits set forth in the Specifications section of this User Guide. [. . . ] You may also have heard the term "40-bit" used in conjunction with WEP encryption. This level of WEP encryption has been called 40-bit because it uses a 40-bit secret key along with a 24-bit Initialization Vector (40 + 24 = 64). Linksys uses the term "64-bit" when referring to this level of encryption. Make sure your wireless network is functioning before attempting to configure WEP encryption. A 128-bit WEP encrypted wireless network will NOT communicate with a 64bit WEP encrypted wireless network. Therefore, make sure that all of your wireless devices are using the same encryption level. All wireless devices complying with the 802. 11b standard will support 64-bit WEP. In addition to enabling WEP, Linksys also recommends the following security implementations: · Changing the SSID from the default "linksys" · Changing the WEP key regularly Note: In order for WEP Encryption to be enabled, wireless functions must first be enabled. Select Enable under the Wireless section before proceeding. Figure B-1 4. From this screen, you will choose your WEP Encryption settings. Figure B-2 30 31 Instant WirelessTM Series · WEP (64Bit or 128B) Select the level of encryption from the drop-down box. 128-bit WEP encryption is unique to Linksys and may conflict with other vendors' WEP encryption. Note: In order to utilize WEP encryption, all points in your wireless network must have WEP enabled and have the same WEP Key. Wireless Access Point Router with 4-Port Switch Configuring Wireless Security in Windows XP Note: For Windows 95, 98, 98SE, NT, 2000, please reference the security sections for the wireless adapters installed in those computers to set up the security. The WEP Encryption key is generated in one of two ways. Enter a Passphrase, a user-defined password, into the Passphrase field. The key will be 10 digits if you chose 64-bit encryption, or 26 digits if you chose 128-bit encryption. This key will be used to encrypt and decrypt the data being sent between the Router and your network's wireless PCs. Make sure your write down the entire Key EXACTLY the way it is displayed. You will need it for the other wireless devices on the network, because the same WEP encryption key must be entered in all wireless devices on the network. Once you have chosen your key encryption method and entered either the Passphrase or manual key, click the Apply button, and the encryption portion of the setup is complete. Note: In Windows XP, a 128-bit Key generated by the Router will be called a "104 bits (26 digits)" key, and a 64-bit Key generated by the Router will be called a "40 bits (10 digits)" key. Because Windows XP does not allow for the use of the Linksys Passphrase feature with the wireless PC adapters, you will need to manually enter the key generated in the previous section. The following steps will help you enable WEP and enter the encryption key manually for your wireless PC cards, in order to enable your Windows XP system to communicate with the Router wirelessly. These steps assume that your CD-ROM drive is letter D and that you are running Windows XP in the default mode. As shown in Figure B-3, click the Start button and go to the Control Panel. Figure B-3 32 33 Instant WirelessTM Series 2. In the "Control Panel" window, click the Network and Internet Connections icon, shown in Figure B-4. Wireless Access Point Router with 4-Port Switch If a "Connect to Wireless Network" window appears, in the Available Networks section, click the desired wireless network, specified by the Router's SSID. Then, double-click the Wireless Network Connection icon. Figure B-4 3. [. . . ] While IP takes care of handling the actual delivery of the data (routing), UDP takes care of keeping track of the individual units of data (called packets) that a message is divided into for efficient delivery over the network. UDP is known as a "connection-less" protocol due to NOT requiring the receiver of a packet to return an acknowledgment of receipt to the sender of the packet (as opposed to TCP). Upgrade - To replace existing software or firmware with a newer version. In a communications session, upload means transmit, download means receive. [. . . ]