Using firewallsA firewall can be hardware, software, or a combination of both depending on the level of security required.Firewalls work on a set of rules to determine which inbound and outbound connections are authorized. Ifyour computer is preinstalled with a firewall program, it helps protect against computer Internet securitythreats, unauthorized access, intrusions, and Internet attacks. It also protects your privacy. For moreinformation about how to use the firewall program, refer to the help system of your firewall program.To use Windows Firewall, do the following:1. Click the Start button to open the Start menu.2. Depending on your Windows version, do one of the following:• For Windows 7: Click Control Panel.• For Windows 10: Click Windows System ➙ Control Panel.3. View Control Panel by Large icons or Small icons, and then click Windows Defender Firewall.4. Follow the instructions on the screen.Protecting data against virusesYour computer is preinstalled with an antivirus program to help you guard against, detect, and eliminateviruses.Lenovo provides a full version of antivirus software on your computer with a free 30-day subscription. After30 days, you must renew the license to continue receiving the antivirus software updates.Note: Virus definition files must be kept up-to-date to guard against new viruses.For more information about how to use your antivirus software, refer to the help system of your antivirussoftware.Using the Smart USB Protection functionThe Smart USB Protection function is a security function that helps prevent data from being copied from thecomputer to USB storage devices connected to the computer. You can set the Smart USB Protectionfunction to one of the following modes:• Disabled (default setting): You can use the USB storage devices without limitation.• Read Only: You cannot copy data from the computer to the USB storage devices. However, you canaccess or modify data on the USB storage devices.• No Access: You cannot access the USB storage devices from the computer.To configure the Smart USB Protection function, do the following:1. Start the Setup Utility program. See “Starting the Setup Utility program” on page 67.2. Select Security ➙ Smart USB Protection and press Enter.3. Select the desired setting and press Enter.4. To save settings and exit the Setup Utility program, press F10 or Fn+F10 (depending on the keyboardsettings). Then, select Yes in the window displayed, and press Enter.Chapter 5. Security 65
