Using firewall software | HP LJ527UT, WX557AV, LQ174AW, LQ164AW

Using firewall software

Firewalls are designed to prevent unauthorized access to a system or network. A firewall can be a software program you install on your computer and/or network, or it can be a solution made up of both hardware and software.

There are two types of firewalls to consider:

●Host-based firewalls—Software that protects only the computer it is installed on.

●Network-based firewalls—Installed between your DSL or cable modem and your home network to protect all the computers on the network.

When a firewall is installed on a system, all data sent to and from the system is monitored and compared with a set of user-defined security criteria. Any data that does not meet those criteria is blocked.

Your computer or networking equipment may already have a firewall installed. If not, firewall software solutions are available.

NOTE: Under some circumstances a firewall can block access to Internet games, interfere with printer or file sharing on a network, or block authorized e-mail attachments. To temporarily resolve the problem, disable the firewall, perform the task that you want to perform, and then reenable the firewall. To permanently resolve the problem, reconfigure the firewall.

64 Chapter 7 Security

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HP LJ527UT, WX557AV, LQ174AW, LQ164AW manual Using firewall software

Contents

HP Notebook Product notice Safety warning notice Iv Safety warning notice Table of contents VGA Hdmi External cards and devices Cleaning your computer Cleaning products Viii Computer Setup Bios and System Diagnostics Page Introduction Finding more information about your new computer Networking select models only Creating a wireless connectionIdentifying wireless and network status icons Windows Windows Vista Using operating system controls Turning wireless devices on or offUsing HP Connection Manager select models only Click Start All Programs HP HP Connection Manager Select Start Connect to Using a WlanConnecting to an existing Wlan Roaming to another network Setting up a new WlanProtecting your Wlan Using HP Mobile Broadband select models only Inserting a SIM Bluetooth and Internet Connection Sharing ICS Using GPS select models onlyUsing Bluetooth wireless devices Removing a SIM Connecting a modem cable Connecting to a wired networkUsing a modem select models only Page Connecting a country- or region-specific modem cable adapter Selecting a location setting Adding new locations when traveling Windows Select Start Device and Printers Connecting to a local area network LAN select models only Page Audio Using the media activity controlsMultimedia Checking audio functions on the computer Adjusting the volumeSelect Start All Programs Accessories Sound Recorder Select Start Control Panel Hardware and Sound Sound Select Start All Programs Accessories Sound Recorder Webcam select models only Video VGA Configuring audio for Hdmi Hdmi Intel Wireless Display select models only Windows 7-SelectStart Shut down Power managementShutting down the computer Initiating and exiting Sleep Setting power optionsUsing power-saving states Initiating and exiting Hibernation Viewing the current power plan Using the power meterUsing power plans Selecting a different power plan Setting password protection on wakeup Customizing power plans Click Require a password recommended Click Save changes Finding additional battery information Using Power Assistant select models onlyUsing battery power Select Start All Programs HP HP Power Assistant Maximizing battery discharge time Using Battery CheckDisplaying the remaining battery charge Managing low battery levels Conserving battery power Resolving a low battery level Disposing of a used battery Using external AC powerStoring a battery Replacing the batteryPage Switching between graphics modes select models only Testing an AC adapter Inserting a digital card Using Media Card Reader cards select models onlyExternal cards and devices Using PC Cards select models only Removing a digital card Configuring a PC Card Inserting a PC Card Removing a PC Card Using ExpressCards select models onlyConfiguring an ExpressCard Inserting an ExpressCard Using smart cards select models only Removing an ExpressCard Removing a smart card Using a USB deviceInserting a smart card Removing a USB device Using 1394 devices select models onlyConnecting a USB device Removing a 1394 device Using an eSATA device select models onlyConnecting a 1394 device Connecting an eSATA device Removing an eSATA device Using optional external drives Using a serial device select models onlyUsing optional external devices Using the expansion port select models only Using the docking connector select models only External cards and devices Drives Handling drives Using Disk Cleanup Using hard drivesUsing Disk Defragmenter Improving hard drive performance Identifying HP 3D DriveGuard status Using HP 3D DriveGuard select models onlyManaging power with a parked hard drive Using HP 3D DriveGuard software Using optical drives select models onlyIdentifying the installed optical drive Inserting an optical disc Removing an optical disc Slot load When the disc tray opens normally Slot load Using RAID select models only Sharing optical drives Security Protecting the computer Using passwords Setting passwords in Windows Setting a new Bios administrator password Setting passwords in Computer SetupManaging a Bios administrator password Changing a Bios administrator password Deleting a Bios administrator password Managing a Computer Setup DriveLock passwordEntering a Bios administrator password Setting a DriveLock password Removing DriveLock protection Entering a DriveLock passwordChanging a DriveLock password Removing Automatic DriveLock protection Using Computer Setup Auto DriveLockEntering an Automatic DriveLock password Page Using antivirus software Using firewall software Installing critical security updates Using HP ProtectTools Security Manager select models only Installing an optional security cable Using the fingerprint reader select models only Locating the fingerprint reader Maintenance Cleaning procedures Cleaning your computerCleaning products Cleaning the display Updating programs and drivers Cleaning the TouchPad and keyboardCleaning a tablet PC pen and pen holder Using SoftPaq Download Manager Starting Computer Setup Computer Setup Bios and System DiagnosticsUsing Computer Setup Navigating and selecting in Computer Setup Restoring factory settings in Computer Setup Downloading a Bios update Updating the BiosDetermining the Bios version Select Start Help and Support Maintain Using System Diagnostics MultiBoot About the boot device order Enabling boot devices in Computer Setup Considering boot order changes Dynamically choosing a boot device using the F9 prompt Choosing MultiBoot preferencesSetting a new boot order in Computer Setup Setting a MultiBoot Express prompt Entering MultiBoot Express preferences Management Using Client Management SolutionsConfiguring and deploying a software image Managing and updating software HP Client Manager for Altiris select models onlyPage HP CCM Client Configuration Manager select models only HP SSM System Software Manager Using Intel Active Management Technology select models only Intel ME Configuration Enabling the iAMT solutionUsing the MEBx setup utility menus IAMT Configuration Change Intel ME Password Traveling with the computer Page Troubleshooting resources Electrostatic Discharge Symbols/Numerics Index Keys SIM