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<v ->Network security.</v>
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In this section of the course
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we're going to talk about network security.
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So up to this point, we've really only focused
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on making our networks functional and working
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in order to support our business needs.
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But we really haven't focused a lot on security just yet.
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And now we really need to understand the basics of security,
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the threat against our networks and how to manage the risk
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so that we can effectively use our networks
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to meet the operational needs of our business and its users.
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So in this section of the course,
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we're going to focus on the fundamentals of security,
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including the CIA triad, threats,
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vulnerabilities and exploits, risk management,
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the principles of security, defense in depth
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and our different methods of authentication.
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We're going to be talking all about
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domain 4 network security in this section of the course
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and covering three different objectives,
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namely 4.1, 4.3 and 4.5.
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Objective 4.1 states that you must explain
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common security concepts.
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4.3 states that given a scenario,
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you must apply network hardening techniques,
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and 4.5 states that you must explain the importance
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of physical security.
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So let's get started learning all about network security
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and how to start protecting it networks.