Firewalls seem to be the stuff of legend in the IT community. Everyone has one because they're afraid of system crackers, viruses, and other nefarious things, but very few people know what a firewall is, let alone how to construct one. . . .
Firewalls seem to be the stuff of legend in the IT community. Everyone has one because they're afraid of system crackers, viruses, and other nefarious things, but very few people know what a firewall is, let alone how to construct one. This article will give you a good overview of what happens under the hood, and how you might use Linux in other security applications such as penetration-testing and intrusion detection.
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