What is Network security?

Computer security is the process of preventing and detecting unauthorized use of your computer. Prevention measures help you to stop unauthorized users (also known as "intruders") from accessing any part of your computer system. Detection helps you to determine whether or not someone attempted to break into your system, if they were successful, and what they may have done.

Security as a subject on the whole, is very important to each person, as well as any company (big or small). We use computers for everything from banking and investing to shopping and communicating with others through email or chat programs. Although you may not consider your communications "top secret," you probably do not want strangers reading your email, using your computer to attack other systems, sending forged email from your computer, or examining personal information stored on your computer (such as financial statements). For further information, regarding security issues, you can visit the following sites:

www.cert.org/tech_tips/home_networks.html
www.insecure.org/tools
www.intrusion.com/