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Windows Vista™ Inside Out by Craig Stinson, Carl Siechert, Ed Bott

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Blocking Intruders with Windows Firewall

Your first line of defense in securing your computer is to protect it from attacks by outsiders. Once your computer is connected to the internet, it becomes just another node on a huge global network. A firewall provides a barrier between your computer and the network to which it’s connected by preventing the entry of unwanted traffic while allowing transparent passage to authorized connections.

Using a firewall is simple, essential, and often overlooked. You’ll want to be sure that all network connections are protected by a firewall. You might be comforted by the knowledge that your portable computer is protected by a corporate firewall when you’re at work and that you use a firewalled broadband connection ...

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