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To stop the Wi-Fi function abruptly, turn off your VAIO computer and the wireless devices (if
any).
The WLAN standard includes the encryption methods: Wired Equivalent Privacy (WEP), which
is a security protocol, Wi-Fi Protected Access 2 (WPA2), and Wi-Fi Protected Access (WPA).
Proposed jointly by the IEEE and Wi-Fi Alliance, both WPA2 and WPA are specifications of
standards based on interoperable security enhancements that increase the level of data
protection and access control for existing Wi-Fi networks. WPA is designed to be forward
compatible with the IEEE 802.11i specification. It utilizes the enhanced data encryption
Temporal Key Integrity Protocol (TKIP) in addition to user authentication using 802.1X and
Extensible Authentication Protocol (EAP). 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. 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, 802.11n, and 802.11ac
(draft) standards, 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.
Stopping Wi-Fi(R) (Wireless LAN) Communications
You can stop Wi-Fi communications by following these steps.
1. Open the charms and select the Settings charm. (See Opening the Charms to open the
charms.)
2. Select (the network icon).
3. Select the desired access point and Disconnect.
Note
Do not disable the Wi-Fi function while accessing remote documents, files, or resources, as it
may result in data loss.
About the Wi-Fi(R) (Wireless LAN) Standards
Wi-Fi allows your VAIO computer to connect to a network through a wireless connection.
Wi-Fi uses the following IEEE 802.11a/b/g/n/ac (draft) standard, which specifies the type of
technology used. Refer to the specifications to find out about the configuration of the computer.
IEEE 802.11a (Frequency band:5 GHz)
Exclusive to models compliant with the IEEE 802.11a/b/g/n/ac (draft) standard.