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| FAQs: What is a Firewall? |
A firewall sits between your computer and the rest of the
Internet, filtering out unwanted traffic and foiling attempts
to interfere with or take over your computer. Firewalls can
be separate devices, which is very common today, or simply pieces
of software for your own computer, which is also fairly common.
Separate firewall devices are often preferable because their
very simplicity makes them less likely to have unknown security
problems; however, it is still important to keep up with "firmware
updates" released by the manufacturer, otherwise your firewall
may be vulnerable to attack. "Cable/DSL routers" and
similar devices sold by companies like Linksys provide simple
firewall capabilities which are adequate for most home users.
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