When a company or organization wants to use the Internet, they must decide whether they want to do it by directly attaching to the Internet system or whether they will use another company to supply the connection. Many companies choose to use another company, called a service provider, because it reduces the amount of equipment, administration, and costs involved. If the company or organization wants to directly connect (and sometimes when they are using a service provider), t....

In 1994, an incredibly forward-thinking man named Rasmus Lerdorf developed a set of tools that used a parsing engine to interpret a few macros here and there. They were not extravagant: a guest book, a counter, and some other "home page" elements that were cool when the Web was in its infancy. He eventually combined these tools with a form interpretation (FI) package he had written, added some database support, and released what was known as PHP/FI.Then, in the spiri....

I believe that organization starts in UNIX. If your system is not well organized or you have not followed a consistent method, you may want to consider why this is a good idea. Many new administrators take simple organizational methodologies, such as the location of added software, for granted. A few months later the result is that changes, such as upgrades, require additional time to install and troubleshoot. In the end, you may save a considerable amount of time by doing thr....

Unlock your phone so that it works with all network operators when you travel or switch plans. It is your phone. Take control of it!. If you bought your phone from a mobile operator, chances are very good that it’s locked to the operator’s network. While the phone itself might be compatible with all GSM networks (i.e., a triband phone), it rejects SIM cards from other GSM operators. Locking imposes some ....

TWO OF THE GREATEST THREATS TO EVERY COMPUTER ARE VIRUSES AND WORMS, WHICH ARE NOTHING MORE THAN COMPUTER PROGRAMS THAT SOMEONE EITHER WROTE FOR "FUN," OUT OF CURIOSITY, OR AS A CHALLENGE TO CREATE THE MOST DESTRUCTIVE VIRUS OR WORM POSSIBLE. Although some viruses and worms are completely harmless, the majority of viruses and worms cause a wide range of trouble, from displaying nonsensical messages on the screen, to making the keyboard work erratically, ....