Why Implement Network Security?

A long time ago in a galaxy far, far away, computers were standalone and did not talk to one another. There was such a thing as SneakerNet. What is SneakerNet? SneakerNet was saving files onto a 5.25” floppy disk or other removable media and handing that media to your co-worker. Bam!—the network was born. Today, computers are connected throughout the world via high-speed and low-speed connections. You can jump on your computer in Dallas and instantaneously be connected to Tokyo or Moscow. What does this all mean to you as a network-security engineer? Everyone who's connected to the Internet also has connectivity to you. Just like the world in general, the Internet has good folks and bad folks. The good folks legitimately ...

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