What exactly is a firewall? A
firewall filters certain types of
information that is entering or
leaving a network or computer.
Firewalls do not filter for viruses
or spyware like anti-virus or anti-spyware
software.
There are two different categories
of firewalls: software and hardware.
* A software firewall is a program
you install on your computer. For
most home users a software firewall
is the best and most economical
choice.
* A hardware firewall is a dedicated
appliance that does firewalling. For
a business with a medium to large
network a hardware firewall is a
better choice.
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