Sometimes stealing an entire computer may be too obvious or difficult, but stealing the components inside may be a lot easier. After all, anyone can tell when a computer suddenly disappears from a desk, but who will notice when a computer suddenly loses a hard drive, a video card, an external Zip drive, a trackball, or a memory chip? To stop someone from walking off with an external device, such as an external hard drive or computer speakers, you can glue a ....

An SMTP (Simple Mail Transfer Protocol) server is a machine that transports mail, just like a Web server is a machine that displays Web pages when requested. An SMTP server is sometimes referred to as an outgoing mail server, which brings me to the point—you need one in order to complete the exercises in this chapter. On Linux/UNIX, Sendmail and Qmail are popular packages. On Windows, the SMTP service in the Windows NT Service Pack, or the service built into....

The type of cabling used in a network is called the network medium. Today, networks use many types of cables, although only a few types are in common usage. Some of the more exotic types of cables are very expensive. The type of cabling can have an influence on the speed of the network, although for most small- to medium-sized local area networks this is not a major issue. Twisted pair cabling is one of the most commonly used network mediums because it is cheap and easy to wor....

While children (or even adults) could use email or programs like the Peekabooty software to slip pornography past any Internet filtering software that their parents or company may have installed, the intended purpose for circumventing Internet filters is to visit government-banned websites.To learn what type of information may threaten certain governments, try looking at the following websites. Who knows? Maybe you’ll find ideas to help you circumvent ....

In the early days of the phone system, you picked up a telephone and talked to an operator who put your call through. As more people got phone lines, the phone company began to replace its operators with special switching equipment. When you dialed a number, your telephone sent a signal to the switching equipment, which routed your call to its destination. Such switching systems could handle more calls more efficiently than human operators, but they also opened the door to pho....