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Why you should
use a computer firewall
Connecting
to the Internet without a firewall is like leaving the keys in your car
with the engine running and the doors unlocked while you run into the
store. Although you may be able to get in and out before anyone notices,
someone may take advantage of the opportunity. On the Internet, hackers
use malicious code—such as viruses, worms, and Trojan horses—to try to
find unprotected computers. A firewall can help protect your computer
against these and other security attacks.www.tartoos.com
So what can a hacker do? It depends on the nature of
the attack. While some attacks are just nuisances that may play simple
pranks, others are created with malicious intent. These more severe
strains may attempt to delete information from your computer, crash it, or
even steal personal information, such as passwords or credit card numbers.
Some hackers enjoy nothing better than breaking into vulnerable computers.
Viruses, worms, and Trojan horses
are scary. Fortunately, you can reduce your risk of infection by using a
firewall.www.tartoos.com
How do I choose a firewall?
A firewall works by
examining information coming from and going to the Internet. It identifies
and ignores information that comes from a dangerous location or seems
suspicious. If you set up your firewall properly, hackers searching for
vulnerable computers can't detect your computer.
There are three
basic types of firewalls available today. The first step in choosing a
firewall is to determine which one is best for you. Your options include:
* Software
firewalls
* Hardware routers
* Wireless routers
To get started,
answer these questions and record your answers:www.tartoos.com
1 - How many
computers will be using the firewall?
2 - What operating
system are you using? (This might be a version of Microsoft Windows®,
Apple Macintosh, or Linux.)
That's it. You are
now ready to start thinking about what type of firewall you would like to
use. There are several options, each with its own pros and cons.
Windows Firewall (Windows XP Service Pack 2 only)
If you are using
Window XP Service Pack 2 (SP2), the most updated version of Windows XP,
you have a firewall built-in and turned on by default. To learn more about
the Windows Firewall that comes with Windows XP SP2, read Understanding
Windows Firewall.
Tip: If you
haven't downloaded Service Pack 2, visit our Protect Your PC section to
learn how to get it.
If you are using
Windows XP and you choose not to download Service Pack 2, you'll still
have access to the Internet Connection Firewall (ICF) that's built into
Windows XP, but you'll need to turn it on. For more information see Use
the Internet Connection Firewall.
Note: The
Windows Firewall and the Internet Connection Firewall are not available as
a stand-alone package. They are also not available for other operating
systems (for example, Apple Macintosh or Linux) or for versions of Windows
other than Windows XP.www.tartoos.com
Software firewalls
Software firewalls
are a good choice for single computers, and they work well with Windows
98, Windows ME, and Windows 2000. (Windows XP has a built-in firewall, so
an additional firewall is not necessary.)
Software firewalls
are available from other software companies. For special offers on
antivirus and firewall packages, visit our Security software: Downloads
and trials page.
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Pros |
Cons |
Does not require additional hardware.
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Additional cost: Most software firewalls cost money.
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Does not require additional computer wiring.
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Installation and configuration may be required to get started.
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A good option for single computers.
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One copy is typically required for each computer.
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Hardware routers
Hardware routers are a good choice for home networks that will
be connected to the Internet.
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Pros |
Cons |
Hardware routers usually have at least four network ports to connect
other computers together.
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Requires wiring, which can clutter your desktop area.
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Hardware routers provide firewall protection for multiple computers.
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Wireless routers
If you have or are planning to use a wireless network, you will
need a wireless router. Only a few wireless routers come equipped with a
built-in firewall, so you may need to purchase a firewall separately.
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Pros |
Cons |
Wireless routers allow you to connect computers, portable computers,
personal desk assistants, and printers without using wiring.
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Wireless devices broadcast information using radio signals that can
be intercepted by someone outside of your home (with the right
equipment).
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Wireless routers are excellent for connecting notebook computers to
the Internet and networks.
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Using a wireless router requires you to use a wireless adapter in
any computer that connects to it. Therefore, you may have to pay for
extra equipment.
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Not all wireless routers come equipped with a built-in firewall, so
you may have to purchase one separately.
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Next step: Start using a firewall todaywww.tartoos.com
Connecting to the Internet can create
dangers for the unaware computer user. Using a firewall can help reduce your
risk. Installing a firewall is just the first step toward safer surfing
online. You can continue to improve your computer's security by keeping your
software up to date and maintaining a current antivirus software
subscription.
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