For all intents and purposes, the Internet would not be as big as it is today without the Web, email, FTP, and newsgroups. These four applications are responsible for the vast majority of traffic moving across the Internet. It’s impossible to discuss network security without talking a bit about the fundamental four Internet applications
What people think: The Internet is the Web/email/AOL.
What we think: The Net is much more than meets the eye.
The above information is the start of a chapter in "Network Security Illustrated," published by McGraw-Hill and available from amazon.com, as well as your local bookstore. The book goes into much greater depth on this topic. To learn more about the book and what it covers, click here.
Below, you'll find links to online resources that supplement this portion of the book.