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Sams Teach Yourself Networking in 24 Hours, Fourth Edition by Uyless Black

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HOUR 20Security

What You’ll Learn in This Hour:

Definition of key security terms

Computer network vulnerabilities

Defending against vulnerabilities

Tools for defenses

We begin this hour with an explanation of several basic but important terms pertaining to security. We then survey the security dangers faced by computer networks. Next, we explain several effective defenses employed to thwart these dangers. We conclude the hour with a look at specific tools to implement these defenses.

Network security is surely the most important job for the manager of a computer network. An efficient and fast network—one providing wonderful email, file transfer, and web page services—is all for naught if it’s not secure. And if the network you manage ...

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