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Firewalls - A Network's First Line of Defense

Fast, broadband Internet connectivity (T1, T3, ISDN, DSL, cable) makes it possible for anyone with enough computer savvy to remotely access any computer on a company's network, as well as an individual's home computer. Once into a computer, these Internet raiders can view and steal data, take control of programs and web sites, and otherwise wreak havoc on companies, government agencies, educational institutions, media outlets, and more.

Firewalls are programs and hardware that act as security guards to provide varying levels of protection. For instance, they can prevent unauthorized log-ins from outside sources, filter information coming through Internet connections, and / or permit only e-mail traffic to pass through. Firewalls also can provide a logging and auditing function which gives summaries about what kinds and amount of traffic passed through it, how many break-in attempts occurred, and so on.

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About CD's.

A recent visitor to our site asks:
I'm curious about the 'technology' of CDs. What makes Read-Only CDs and CD-Rs different, and are CDs actually burned?

Art "Gramps" Gibbons

Dear Art:

We could never explain this technology to you as well as the writers of the Howstuffworks web site. Go to http://computer.howstuffworks.com/cd-burner.htm for detailed information on this topic. You'll find www.howstuffworks.com to be a gold mine of information on a multitude of topics whether you're doing research or are "just curious."

Your friends at SOFTEACH

Do you have a general computer or Internet-related question? Submit it to info@softeachusa.com. We'll answer it here. Please include your name and job title. (SOFTEACH reserves the right to select those questions we believe are of interest to the majority of our visitors.)

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