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Data encryption protects the vulnerable wireless link between clients and Access Points. Besides that, there are other typical LAN security mechanisms to ensure privacy, such as: password protection, end-to-end encryption, virtual private networks, and authentication. Wireless LAN devices using the IEEE802.11a standard and the ones using the IEEE802.11b or g standard cannot communicate because the frequencies are different. IEEE802.11b: The standard speed is 11 Mbps, or about 30 to 100 times faster than a standard dial up. IEEE802.11a/g: The standard speed is 54 Mbps, or about 5 times faster than a Wireless LAN device using the IEEE802.11b standard. 5757n N Using Your VAIO Computer Communicating without an Access Point (Ad-hoc) An ad-hoc network is a network in which a local network is created only by the wireless devices themselves, with no other central controller or Access Point. Each device communicates directly with other devices in the network. You can set up an ad-hoc network easily at home. 5858n N Using Your VAIO Computer To communicate without an Access Point (ad-hoc) 1 Turn on the WIRELESS or WIRELESS LAN switch. The WIRELESS LAN indicator lights up. On models with the Bluetooth functionality*1, double-click ( Switch window. Select the Enable 2.4 GHz Wireless LAN chec / ) on the taskbar to display the Wireless Device k box and click OK. 2 Click Start and then Control Panel. 3 Click Network and Internet Connections. 4 Click Network Connections. The Network Connections window appears. 5 Right-click Wireless Network Connection, then click PropertieThe Wireless Network Connection Properties window appears. s. 6 Select the Wireless Networks tab. 7 Click the Add… button. The Wireless network properties window appears. 8 Enter a Network name (SSID)*2 . You can choose a 32-digit alphanumeric name. 9 Select Open from the Network Authentication drop-down box. 10 Select WEP from the Data Encryption drop-down box. 11 Deselect the The key is provided for me automatically option button. Some information becomes visible. 12 Enter the Network key*2. The network key should be 5 or 13 alphanumeric characters or 10 or 26 hexadecimal*3 characters long. You can choose whatever you want. 5959n N Using Your VAIO Computer 13 Enter exactly the same Network key again, for confirmation. 14 Select the check box This is a computer-to-computer (ad hoc) network; wireless access points are not used at the bottom of the screen. 15 Click OK. Your Network name appears in the Preferred networks. 16 Click Advanced. The Advanced window appears. 17 Select the Computer-to-computer (ad hoc) networks only option button. 18 Click Close. 19 Click OK. The computer is ready to communicate with another computer. *1 See the printed Specifications Guide to see whether your model supports the Bluetooth functionality. *2 If you want to communicate between two or more computers, you need to configure all these computers the exact same way. This means that you need to enter the s...

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