the channel settings of your access point.
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.
IEEE 802.11b/g (Frequency band:2.4 GHz)
The IEEE 802.11g standard provides higher-speed communications than the IEEE 802.11b.
