HP Pavilion dm4-3013cl Entertainment Notebook PC - Manual (Page 88)

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 may be preinstalled on your
computer as a trial offer. 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 upgrade
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.
For more information about computer viruses, type viruses in the Search box in Help and Support.
Using firewall software
Firewalls are designed to prevent unauthorized access to a system or network. A firewall can be
software you install on your computer and/or network, or it can be a combination 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.
78 Chapter 11 Securing your computer and information