User Guide - Ubuntu

Entering an administrator password
At the Enter Password prompt, type your administrator password, and then press enter. After 3
unsuccessful attempts to enter the administrator password, you must restart the computer and try
again.
Managing a power-on password
To set, change, or delete this password, follow these steps:
1. Open Setup Utility by turning on or restarting the computer. While the “Press the ESC key for
Startup Menu” message is displayed in the lower-left corner of the screen, press esc. When the
Startup Menu is displayed, press f10.
2. Use the arrow keys to select Security > Set Power-On Password, and then press enter.
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To set a power-on password, type your password in the Enter New Password and Confirm
New Password fields, and then press enter.
●
To change a power-on password, type your current password in the Enter Current
Password field, type a new password in the Enter New Password and Confirm New
Password fields, and then press enter.
●
To delete a power-on password, type your current password in the Enter Current Password
field, and then press enter 4 times.
3. To save your changes and exit Setup Utility, use the arrow keys to select Exit > Exit Saving
Changes.
Your changes take effect when the computer restarts.
Entering a power-on password
At the Enter Password prompt, type your password, and then press enter. After 3 unsuccessful
attempts to enter the password, you must restart the computer and try again.
Using Internet security software
When you use your computer to access email, a network, or the Internet, you potentially expose your
computer to computer viruses, spyware, and other online threats. To help protect your computer,
Internet security software that includes antivirus and firewall features can be installed. To provide
ongoing protection against newly discovered viruses and other security risks, security software must
be kept up to date. It is strongly recommended that you 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.
Using Internet security software 37