HP : B4B15UA, : LY849UA, : LW883AW, : G4 1107NR manual Protecting your Wlan

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NOTE: Some cable modems include a built-in router. Check with your ISP to see if you need a separate router.

The illustration below shows an example of a wireless network installation that is connected to the Internet.

NOTE: When setting up a wireless connection, be sure that your computer and wireless router are synchronized. To synchronize your computer and wireless router, turn your computer and wireless router off and then back on.

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

When you set up a WLAN or access an existing WLAN, always enable security features to protect your network from unauthorized access. WLANs in public areas (hotspots) like coffee shops and airports may not provide any security. If you are concerned about the security of your computer in a hotspot, limit your network activities to e-mail that is not confidential and basic Internet surfing.

Wireless radio signals travel outside the network, so other WLAN devices can pick up unprotected signals. You can take the following precautions to protect your WLAN:

●Firewall—A firewall checks both data and requests for data that are sent to your network, and discards any suspicious items. Firewalls are available in both software and hardware. Some networks use a combination of both types.

●Wireless encryption—Your computer supports three encryption protocols:

◦Wi-Fi Protected Access (WPA)

◦Wi-Fi Protected Access II (WPA2)

◦Wired Equivalent Privacy (WEP)

NOTE: HP recommends that you select WPA2, which is the most advanced of the three encryption protocols. The use of WEP encryption is not recommended, because it can be overcome with little effort.

●Wi-Fi Protected Access (WPA) and Wi-Fi Protected Access II (WPA2) use security standards to encrypt and decrypt data transmitted over the network. Both WPA and WPA2 dynamically

Using a WLAN 5

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Contents HP Notebook Product notice Safety warning notice Iv Safety warning notice Table of contents VGA External cards and devices Security Page Page Finding more information about your new computer IntroductionCreating a wireless connection Identifying wireless and network status iconsNetworking select models only Using HP Connection Manager select models only Turning wireless devices on or offSetting up a new Wlan Using a WlanUsing operating system controls Connecting to an existing WlanProtecting your Wlan Using HP Mobile Broadband select models only Roaming to another networkInserting a SIM Removing a SIM Using GPS select models onlyUsing a modem select models only Using Bluetooth wireless devicesConnecting to a wired network Bluetooth and Internet Connection Sharing ICSConnecting a country- or region-specific modem cable adapter Connecting a modem cableViewing the current location selection Selecting a location settingSelect Start Devices and Printers Connecting to a local area network LAN select models onlyPage Using the media activity controls MultimediaAudio Adjusting the volume Webcam select models onlyChecking audio functions on the computer DisplayPort VideoHdmi Using CyberLink PowerDVD select models only Intel Wireless Display select models onlyConfiguring audio for Hdmi Shutting down the computer Power managementInitiating and exiting Hibernation Setting power optionsUsing power-saving states Initiating and exiting SleepSelecting a different power plan Using the power meterUsing power plans Viewing the current power planUsing HP Power Manager select models only Setting password protection on wakeupCustomizing power plans Using battery power Finding battery informationUsing Battery Check Identifying low battery levels Displaying the remaining battery chargeMaximizing battery discharge time Managing low battery levelsConserving battery power Storing a batteryResolving a low battery level Using external AC power Disposing of a used batteryReplacing the battery Testing an AC adapter Using HP CoolSense select models onlyUsing Digital Media Slot cards select models only External cards and devicesInserting a digital card Inserting an ExpressCard Using ExpressCards select models onlyConfiguring an ExpressCard Removing a digital cardRemoving an ExpressCard Inserting a smart card Using smart cards select models onlyUsing a USB device Connecting a USB deviceRemoving a smart card Using 1394 devices select models only Connecting a 1394 deviceRemoving a USB device Using an eSATA device select models only Connecting an eSATA deviceRemoving a 1394 device Removing an eSATA device Using optional external devicesUsing optional external drives Using the expansion port select models onlyUsing optional external devices Handling drives DrivesImproving hard drive performance Using hard drivesUsing Disk Defragmenter Using Disk CleanupIdentifying HP ProtectSmart Hard Drive Protection status Managing power with a parked hard driveInserting an optical disc Using optical drives select models onlyIdentifying the installed optical drive Using HP ProtectSmart Hard Drive Protection softwareSlot load Removing an optical discWhen the disc tray opens normally Slot load Sharing optical drives Using RAID select models onlyUsing passwords SecurityProtecting the computer Setting passwords in Setup Utility Bios Setting passwords in WindowsEntering an administrator password Managing an administrator passwordEntering a power-on password Using antivirus softwareUsing firewall software Managing a power-on passwordInstalling an optional security cable Installing critical security updatesLocating the fingerprint reader Using the fingerprint reader select models onlyCleaning the TouchPad and keyboard MaintenanceCleaning your computer Cleaning the displayUsing SoftPaq Download Manager Changing the language of Setup Utility Bios Setup Utility Bios and System DiagnosticsUsing Setup Utility Bios Starting Setup Utility BiosNavigating and selecting in Setup Utility Bios Restoring factory settings in Setup Utility BiosDisplaying system information Exiting Setup Utility Bios Updating the BiosDetermining the Bios version Select Start Help and Support Maintain Downloading a Bios updateUsing System Diagnostics Traveling with the computer Page Troubleshooting resources Electrostatic Discharge Index Symbols/NumericsPasswords