Microsoft Office Tutorials and References
In Depth Information
Chapter 19
Internet Security
The Internet is the primary source for almost all the attacks on your computer.
Someone may be trying to break in to steal information, or a worm from another
infected computer may be trying to use the latest exploit to infect your box as
well. So how do you protect your Internet connection? I show you how you can
test your computer and see how vulnerable it actually is. Then you find out
how you can use the firewalls to build a “brick wall” around your computer.
Additionally, you discover how to protect yourself from other Internet threats
such as spyware and what to do to clean up an infection.
Analyzing Your Security
The first step in securing your Internet connection is detecting where you
are vulnerable. Your specific network setup (for example, if your computer is
behind a hardware firewall or router) will affect how exposed your computer
is. For example, if you have a high-speed broadband connection and share it
with more than one computer in your home using a router, your computers
are already better protected than a computer that is just directly connected to
the Internet. By default, most routers act as a firewall by blocking all external
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