Sony VAIO PCG-K415B, Руководство пользователя

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Using your VAIO computer
Using Wireless LAN (WLAN)
Thanks to Sony's Wireless LAN (WLAN), all your digital devices with built-in WLAN functionality communicate freely with each other
through a powerful network. A WLAN is a network in which a mobile user can connect to a local area network (LAN) through a wireless
(radio) connection. So there is no need anymore to pull cables or wires through walls and ceilings.
The Sony WLAN supports all normal Ethernet activities, but with the added benefits of mobility and roaming. You can still access
information, internet/intranet and network resources, even in the middle of a meeting, or as you move from one place to another.
PCG-K series is provided with the wireless LAN functionality that complies with the IEEE 802.11b/g standards and the Super G
technology developed by Atheros Communications, Inc. for faster wireless LAN communications among compatible devices.
You can communicate without an Access Point, this means that you can communicate between a limited number of computers (ad-
hoc), or you can communicate through an Access Point, which allows you to create a full infrastructure network (infrastructure).
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In some countries, using WLAN products may be restricted by the local regulations (e.g. limited number of channels). Therefore, before activating the WLAN
functionality, read the Wireless LAN Regulation carefully. Channel selection is explained further in this manual (see Wireless LAN channel selection
(page 89) ).
WLAN uses the IEEE 802.11b/g standard, which specifies the used technology. The standard includes the encryption method: Wired Equivalent Privacy (WEP),
which is a security protocol and WiFi Protected Access (WPA - Proposed jointly by the IEEE and Wi-Fi Alliance, WiFi Protected Access is a specification of
standards based, interoperable security enhancements that increase the level of data protection and access control for existing WiFi networks. WPA has been
designed to be forward compatible with the IEEE 802.11i specification. It utilizes the enhanced data encryption TKIP (Temporal Key Integrity Protocol) in addition
to user authentication using 802.1X and EAP (Extensible Authentication Protocol)). 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 IEEE 802.11a standard and the ones using the IEEE 802.11b or g standard cannot communicate because the frequencies are
different. Wireless LAN devices using the IEEE 802.11g standard can only communicate with a device using the IEEE 802.11b standard, not with the IEEE 802.11a
standard.
IEEE 802.11b: The standard speed is 11 Mbps, or about 30 to 100 times faster than a standard dial up.
IEEE 802.11g: The standard speed is 54 Mbps, or about 5 times faster than a Wireless LAN device using the IEEE 802.11b standard. (On PCG-K series, you will
only achieve this speed when working exclusively on 802.11g mode and not in a mixed b/g mode).