Hp ProBook 6555b Notebook-PC Manuel d'utilisateur télécharger pdf (Page 34)

For more information, refer to Help and Support. Select Start > Help and Support.

Using a WLAN device (select models only)

With a WLAN device, you can access a wireless local area network (WLAN), which is composed of other

computers and accessories that are linked by a wireless router or a wireless access point.

NOTE: The terms wireless router and wireless access point are often used interchangeably.

●

A large-scale WLAN, such as a corporate or public WLAN, typically uses wireless access points

that can accommodate a large number of computers and accessories and can separate critical

network functions.

●

A home or small office WLAN typically uses a wireless router, which allows several wireless and

wired computers to share an Internet connection, a printer, and files without requiring additional

pieces of hardware or software.

NOTE: To use the WLAN device in your computer, you must connect to a WLAN infrastructure

(provided through a service provider or a public or corporate network).

Setting up a WLAN

To set up a WLAN and connect to the Internet, you need the following equipment:

●

A broadband modem (either DSL or cable) (1) and high-speed Internet service purchased from an

Internet service provider (ISP)

●

A wireless router (purchased separately) (2)

●

The wireless computer (3)

The following illustration shows an example of a wireless network installation that is connected to the

Internet.

As your network grows, additional wireless and wired computers can be connected to the network to

access the Internet.

For help in setting up your WLAN, refer to the information provided by your router manufacturer or your

ISP.

Protecting your WLAN

Because the WLAN standard was designed with only limited security capabilities—basically to foil casual

eavesdropping rather than more powerful forms of attack—it is essential to understand that WLANs are

vulnerable to well-known and well-documented security weaknesses.

WLANs in public areas, or “hotspots,” like coffee shops and airports may not provide any security. New

technologies are being developed by wireless manufacturers and hotspot service providers that make

24 Chapter 2 Wireless, modem, and local area network

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Hp ProBook 6555b Notebook-PC Manuel d'utilisateur Page 34