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It's impossible to understate TCP/IP's value and significance. Without it, you literally wouldn't be able to access the Internet or anything connected to it. The point remains: Everything you do via the Internet would be impossible without TCP/IP. A bunch of other private networks would be equally unusable, too!
Is there a place for security focused on the good guys in networking? There is, and one of the latest additions to this area of security is called Network Admission Control (NAC).A security measure built around the idea that asking specific questions of an organization's end hosts can improve the overall security of a network by improving the compliance of end systems to a given admission policy.
While the needs of every enterprise are different, some things are universal. Planning, communication, teamwork, and understanding your users' requirements are as important as technical expertise.
Simple passwords aren't good enough any more, as the flood of stories about phishing, fraud, and compromised accounts by the millions demonstrate. The Next Big Thing in computer security is two-factor authentication and, like it or not, you're probably going to be dealing with it in the next year or so. But two-factor authentication is a concept, not a product, and how it's implemented is critical to its success.
Although one might be able to just boot up Windows 7 and all computers automatically can see each other, sometimes you can run into problems.
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