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Anleitung Zusammenfassung
WPA2, the second generation of WPA, provides stronger data protection and network access control and is also designed to secure all versions of 802.11 devices, including 802.11b, 802.11a, 802.11g, and 802.11n draft standard, multi-band and multi- mode. In addition, based on the ratified IEEE 802.11i standard, WPA2 provides government grade security by implementing the National Institute of Standards and Technology (NIST) FIPS 140-2 compliant AES encryption algorithm and 802.1X-based authentication. WPA2 is backward compatible with WPA. * See the online specifications to find out whether your model supports the IEEE 802.11a standard and/or the IEEE 802.11n draft standard. 6262nNUsing Your VAIO Computer The IEEE 802.11b/g standard is a wireless LAN standard, using the 2.4 GHz bandwidth. The IEEE 802.11g standard provides high-speed communications, faster than the IEEE 802.11b standard. The IEEE 802.11a standard is a wireless LAN standard, using the 5 GHz bandwidth. The IEEE 802.11n draft standard is a wireless LAN standard, using the 2.4 or 5 GHz bandwidth. Wireless LAN devices using the 2.4 GHz bandwidth cannot communicate with devices using the 5 GHz bandwidth because the frequencies are different. The 2.4 GHz bandwidth used by wireless LAN compatible devices is also used by other various devices. Although technologies to minimize interference from other devices that use the same bandwidth are employed on wireless LAN compatible devices, such interference may cause lower communication speed, narrower communication range, or broken wireless connections. The communication speed varies depending on the distance between communication devices, existence of obstacles between such devices, the device configuration, the radio conditions, and the software in use. In addition, communications may be cut off depending on the radio conditions. The communication range varies depending on the actual distance between communication devices, existence of obstacles between such devices, the radio conditions, the ambient environment that includes existence of walls and materials of such walls, and the software in use. Actual communication speed may not be as fast as the one displayed on your computer. Deploying IEEE 802.11b and IEEE 802.11g products on the same wireless network may reduce the communication speed due to radio interference. Taking this into consideration, the IEEE 802.11g products are designed to reduce the communication speed to ensure communications with IEEE 802.11b products. When the communication speed is not as fast as expected, changing the wireless channel on the access point may increase the communication speed. 6363nNUsing Your VAIO Computer Communicating without an Access Point (Ad-hoc) An ad-hoc network is a network in which a LAN 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. 6464nNUsing Your VAIO Computer To communicate without an access point (ad-hoc) ! You cannot select the 5 GHz bandwidth, which is used for the IEEE 802.11a standard, on ad-hoc networks. The IEEE 802.11n draft standard, using the 2.4 or 5 GHz bandwidth, is not available on ad-hoc networks. 1 Turn on the WIRELESS switch. 2 Click the button next to or above your desired wireless option(s) in the VAIO Smart Network window. Make sure the WIRELESS indicator light turns on. 3 Click Start and Control Panel. 4 Click View network status and tasks under Network and Internet. 5 Click Set up a connection or network on the left pane. The Set up a connection or network window appears. 6 Select an option to specify the ad-hoc network settings and click Next. 7 Follow the on-screen instructions. 6565nNUsing Your VAIO Computer Communicating with an Access Point (Infrastructure) An infrastructure network is a network that extends an existing wired local network to wireless devices by providing an access point (not supplied). The access point bridges the wireless and wired LAN and acts as a central controller for the wireless LAN network. The access point coordinates transmission and reception from multiple wireless devices within a specific range. The access point will select which channel to use on an infrastructure network. ! For details on how to select the channel that will be used by the access point, see the manual that came with your access point. 6666nNUsing Your VAIO Computer To connect to a wireless network 1 Make sure an access point is set up. See the manual that came with your access point for more information. 2 Turn on the WIRELESS switch. 3 Click the button next to or above your desired wireless option(s) in the VAIO Smart Network window. Make sure the WIRELESS indicator light turns on. 4 Right-click or on the taskbar and select Connect to a network. 5 Select the desired access point and click Connect. . For WPA-PSK or WPA2-PSK authentication, you must enter a p...
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