Assessments - 3, GPA: 3.3
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. To connect your computer to the Internet using the wireless LAN function, you need to set up the wireless LAN network. See Using the Wireless LAN (page 46) for more information. ! When you connect your computer to the Internet, be sure to take appropriate security measures to protect the computer against online threats. Depending on the service contract with your ISP, you may need to connect an external modem device, for example a USB telephone modem, a DSL modem, or a cable modem, to your computer to connect to the Internet. For the detailed instructions on connection setups and modem configuration, see the manual that came with your modem. Using Your VAIO Computer > Using the Network (LAN) n 45 N Using the Network (LAN) You can connect your computer to 100BASE-TX/10BASE-T type networks with a LAN cable. Connect one end of a LAN cable (not supplied) to the network (LAN) port on the computer and the other end to your network. For detailed settings and devices required for LAN access, ask your network administrator. . You can connect your computer to any network without changing the default settings. ! Do not plug a telephone cable into the network (LAN) port on your computer. If the network (LAN) port is connected to one of the telephone lines mentioned below, high electric current to the port may cause damage, overheating, or fire. -Home (intercom speakerphone) or business-use telephone lines (multi-line business telephone) -Public telephone subscriber line -Private branch exchange (PBX) Using Your VAIO Computer > Using the Wireless LAN n 46 N Using the Wireless LAN Using the Wireless LAN (WLAN), all your digital devices with the built-in WLAN function communicate freely with each other through a network. A WLAN is a network in which a user can connect to a Local Area Network (LAN) through a wireless (radio) connection. The WLAN supports all normal LAN connectivity, 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. You can communicate without an access point, which means that you can communicate with a limited number of computers (ad-hoc). Or you can communicate through an access point, which allows you to create a full infrastructure network. . In some countries, using WLAN products may be restricted by the local regulations (e.g. limited number of channels). Therefore, before activating the WLAN function, read the wireless LAN regulations guide carefully. WLAN uses the IEEE 802.11a*/b/g standard or the IEEE 802.11n* draft standard, which specifies the type of technology used. The 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, 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 specifications to find out about the configuration of your computer. The IEEE 802.11b/g standard is a wireless LAN standard, using the 2.4 GHz band. The IEEE 802.11g standard provides higher-speed communications than the IEEE 802.11b standard. Using Your VAIO Computer > Using the Wireless LAN n 47 N The IEEE 802.11a standard is a wireless LAN standard, using the 5 GHz band. The IEEE 802.11n draft standard is a wireless LAN standard, using the 2.4 GHz or 5 GHz band. Wireless LAN devices using the 2.4 GHz band cannot communicate with devices using the 5 GHz band because the frequencies are different. The 2.4 GHz band 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 band are employed on wireless LAN compatible devices,...
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