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HP Pavilion Sleekbook 14-b015dx User Guide - Linux - Page 28

Protecting your WLAN, Connecting to a WLAN, Network menu, Wireless Networks

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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 email that is not confidential and basic Internet surfing. Wireless radio signals travel outside the network, so other WLAN devices can pick up unprotected signals. Take the following precautions to protect your WLAN: ● Use a 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. Ubuntu does not include firewall software, but you can download Gufw, a free firewall utility that Ubuntu provides. For information on how to download and install Gufw, refer to Using firewall software on page 55. ● Use wireless encryption. Wireless encryption uses security settings to encrypt and decrypt data that is transmitted over the network. Connecting to a WLAN To connect to the WLAN, follow these steps: 1. Be sure that the WLAN device is on. If the device is on, the wireless light is white. If the wireless light is amber, press the wireless button. 2. Click the Network menu icon at the far right of the top panel. Available wireless networks are listed under Wireless Networks. 3. Click the desired wireless network. If the network is a security-enabled WLAN, you are prompted to enter a network security code. Type the code, and then click OK to complete the connection. NOTE: To connect to a network that is not automatically detected, click the Network menu icon and select Connect to Hidden Wireless Network. Enter the ESSID information, and set encryption parameters. NOTE: If no WLANs are listed, and your network is not hidden, you are out of range of a wireless router or access point. If you do not see the network you want to connect to, click the Network menu icon at the far right of the top panel, and click Edit Connections. NOTE: The functional range (how far your wireless signals travel) depends on WLAN implementation, router manufacturer, and interference from other electronic devices or structural barriers such as walls and floors. 18 Chapter 3 Connecting to a network

Section	Page
Starting right	11
Best practices	11
Fun things to do	12
More HP resources	13
Getting to know your computer	14
Finding your hardware and software information	14
Right side	15
Left side	17
Display	18
Top	19
TouchPad	19
Lights	20
Buttons and speakers	21
Keys	22
Bottom	23
Labels	24
Connecting to a network	25
Connecting to a wireless network	25
Identifying wireless and network status icons	25
Using the wireless controls	25
Using the wireless button	26
Using operating system controls	26
Using a WLAN	26
Using an Internet service provider	26
Setting up a WLAN	27
Configuring a wireless router	27
Protecting your WLAN	28
Connecting to a WLAN	28
Using Bluetooth wireless devices (select models only)	29
Connecting to a wired network	30
Connecting to a local area network (LAN)	30
Enjoying entertainment features	31
Using the webcam	33
Using audio	33
Connecting speakers	33
Connecting headphones	33
Connecting a microphone	33
Checking the sound	34
Using video	35
Connecting an HDMI TV or monitor	35
Configuring audio settings (with HDMI TV)	36
Using the keyboard and pointing devices	37
Using the action keys	37
Using the TouchPad	39
Turning the TouchPad off or on	39
Navigating	40
Selecting	40
Using TouchPad gestures	41
Two-finger scrolling	42
Edge scrolling	42
Managing power	43
Shutting down the computer	43
Setting power options	44
Using power-saving states	44
Initiating and exiting Suspend	44
Initiating and exiting Hibernation	45
Using the Power icon	45
Using power settings	45
Viewing the current power settings	45
Changing the current power settings	45
Using battery power	46
Displaying the remaining battery charge	46
Removing a user-replaceable battery	47
Charging a battery	48
Maximizing battery life	48
Managing low battery levels	48
Identifying low battery levels	49
Resolving a low battery level	49
Resolving a low battery level when external power is available	49
Resolving a low battery level when a charged battery is available	49
Resolving a low battery level when no power source is available	49
Resolving a low battery level when the computer cannot exit Hibernation	49
Conserving battery power	50
Storing a battery	50
Disposing of a used battery	50
Replacing the battery	50
Using external AC power	51
Testing an AC adapter	51
Managing and sharing information	52
Using a USB device	52
Connecting a USB device	53
Removing a USB device	53
Inserting and removing a digital storage card	54
Using optical drives	56
Inserting an optical disc	57
Removing an optical disc	58
Maintaining your computer	59
Updating programs and drivers	59
Cleaning your computer	60
Cleaning the display, sides, and cover	60
Cleaning the TouchPad and keyboard	60
Traveling with or shipping your computer	61
Securing your computer and information	62
Protecting the computer	62
Using passwords	62
Setting passwords in the operating system	63
Setting passwords in Setup Utility	63
Managing an administrator password	64
Entering an administrator password	64
Managing a power-on password	64
Entering a power-on password	64
Using Internet security software	65
Using antivirus software	65
Using firewall software	65
Securing your wireless network	66
Backing up your software applications and information	66
Using an optional security cable lock	66
Using Setup Utility (BIOS) and System Diagnostics	67
Starting Setup Utility	67
Using Setup Utility	67
Changing the language of Setup Utility	67
Navigating and selecting in Setup Utility	68
Displaying system information	68
Restoring factory default settings in Setup Utility	68
Exiting Setup Utility	68
Updating the BIOS	69
Determining the BIOS version	69
Downloading a BIOS update	69
Using Advanced System Diagnostics	70
Backing up, restoring, and recovering	71
Performing a system recovery	71
Creating the restore DVDs	71
Creating a restore image on a USB device	72
Performing recovery using the restore DVD	72
Backing up your information	73
Specifications	74
Input power	74
Operating environment	75
Troubleshooting and support	76
Troubleshooting	77
Disc drive problems	77
Wireless connection problems	78
Cannot connect to the wireless router	78
Audio problems	78
Power management problems	79
Resolving a low battery level	79
Resolving a low battery level when external power is available	79
Resolving a low battery level when a charged battery is available	79
Resolving a low battery level when no power source is available	79
Resolving a low battery level when the computer cannot exit Hibernation	79
Troubleshooting an AC adapter	80
Contacting support	81
Electrostatic Discharge	82

Match case Limit results 1 per page

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 email that is not confidential and basic Internet surfing.

Wireless radio signals travel outside the network, so other WLAN devices can pick up unprotected

signals. Take the following precautions to protect your WLAN:

●

Use a 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. Ubuntu does not include firewall software, but you can download

Gufw, a free firewall utility that Ubuntu provides. For information on how to download and install

Gufw, refer to

Using firewall software

on page

●

Use wireless encryption.

Wireless encryption uses security settings to encrypt and decrypt data that is transmitted over

the network.

Connecting to a WLAN

To connect to the WLAN, follow these steps:

Be sure that the WLAN device is on. If the device is on, the wireless light is white. If the wireless

light is amber, press the wireless button.

Click the

Network menu

icon at the far right of the top panel.

Available wireless networks are listed under

Wireless Networks

Click the desired wireless network.

If the network is a security-enabled WLAN, you are prompted to enter a network security code.

Type the code, and then click

to complete the connection.

NOTE:

To connect to a network that is not automatically detected, click the

Network menu

icon and select

Connect to Hidden Wireless Network

. Enter the ESSID information, and set

encryption parameters.

NOTE:

If no WLANs are listed, and your network is not hidden, you are out of range of a

wireless router or access point.

If you do not see the network you want to connect to, click the

Network menu

icon at the far

right of the top panel, and click

Edit Connections

NOTE:

The functional range (how far your wireless signals travel) depends on WLAN

implementation, router manufacturer, and interference from other electronic devices or structural

barriers such as walls and floors.

Chapter 3

Connecting to a network