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If you are using a DSL or wireless connection to do your internet surfing, you will want to consider using a firewall to protect your computer from outside intruders.
There are many different firewalls on the market; some are software and some are hardware. Some routers you receive with DSL or wireless connections have firewalls built into the hardware. If yours does not have a built-in firewall, you can purchase a different router or purchase firewall software. It is prudent to have plenty of protection when it comes to your computer.
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