I Concepts & Terms Required - Chapter 1000
The consideration of Security should be the most critical topic when discussing networking. And when we say security, we dont just mean protection against system intruders, but protection against all events that pose a risk to the companys data or IT operations. The total value of all the capitol expenditures charged against the IT (Information Technology) budget is nothing compared to the value of the crown jewels of a firm. That is the information that keeps the business functioning. While some areas of security are carefully addressed, all too often other areas are lacking. What makes it worse is the fact that it frequently is a taboo topic, as if we dont talk about it, maybe it will go away. This is a foolish fantasy. Remember Melissa or the Love virus? You need to remember to be ever vigilant.
While the security needs of each company varies and sets its own particular access policies, the challenge lies in finding the sweet spot. Security that is too lax, and you are only keeping out amateur or casual break in attempts. Make security too restrictive, and users cannot perform useful work, and circumvent well planned security by leaving passwords and keys accessible. For the purposes of the NETWORK+ test, several areas are testable, and you will see each of them in this chapter.
ACL (Access Control List)
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