HP 15-d099nr TouchSmart Notebook PC - Manual (Page 46)

the security software trial offer or purchase the software of your choice in order to fully protect your
computer.
Using antivirus software
Computer viruses can disable programs, utilities, or the operating system, or cause them to function
abnormally. Antivirus software can detect most viruses, destroy them, and in most cases, repair any
damage they have caused.
Using firewall software
Firewalls are designed to prevent unauthorized access to a system or network. The Ubuntu operating
system ships with no open ports; therefore, it does not include a firewall utility in the base operating
system. However, you may use the Ubuntu Software Center, located in the Launcher on the left side
of the desktop, to download Gufw, a free Ubuntu firewall utility.
To install Gufw:
1. Click on the Ubuntu Software Center folder located in the Launcher on the left side of the
desktop.
2. Enter Gufw in the search bar and press enter .
3. Double-click the Firewall Configuration icon, and then click the Install button.
4. Follow the on-screen instructions.
To view or modify firewall settings after installing Gufw:
1. Select Ubuntu Software Center from the Launcher on the left side of the desktop, and then click
Gufw.
NOTE: When accessing Gufw, you are prompted for the root password.
2. Follow the on-screen instructions.
NOTE: Under some circumstances a firewall can block access to Internet games, interfere with
printer or file sharing on a network, or block authorized email attachments. To temporarily resolve the
problem, disable the firewall, perform the task that you want to perform, and then reenable the firewall
immediately. To permanently resolve the problem, you must reconfigure the firewall.
Securing your wireless network
When you set up your wireless network, always enable security features. For more information, see
Protecting your WLAN on page 6 .
Backing up your software applications and information
Regularly back up your software applications and information to protect them from being permanently
lost or damaged through a virus attack or a software or hardware failure. For more information, see
Backing up, restoring, and recovering on page 42 .
38 Chapter 8 Securing your computer and information