ID FAQ - I have often heard that the best approach to computer security is to use a layered approach. I have often heard that the best approach to computer security is to use a layered approach. The layered approach can best be compared as an analogy of weathering out a winter storm.
Many people know the feeling of being stuck at home during a winter blizzard.
The things one does in a winter storm are to heat some soup, turn up the furnace, snuggle up under the blankets, and start a fire in the fireplace. All of these things lead to a warm and secure feeling while waiting for the storm to pass. It's this utilization of separate things in the household that results in an overall approach that gives us that warm and fuzzy feeling in a winter storm. Thus, computer security is the most effective when multiple layers of security are used within an organization. The most common misconception is that a firewall will secure your computer facilities and additional steps don't need to be taken.