Security

Adequately securing your computer requires a defense against hardware failure, electrical surges, and external attacks from viruses and hackers. While it's almost impossible to predict when your hardware or software will fail, you can protect against losing data by using a back-up device such as a tape drive, removable storage device, CD Writer, or CD Rewriter.

Proxy servers are often used by businesses or large organizations as mediators among individual users and the Internet. The system administrator sets the guidelines for the network's users, and the proxy server enforces them. A proxy server can then regulate such tasks as network security, administrative control and caching service.