Every machine on the the Internet has a unique number assigned to it, called an IP address. Without a unique IP address on your machine, you will not be able to communicate with other devices, users, ...

Figure 1. A screen capture of an exchange between a desktop computer and a DHCP server. Click here to see an enlarged diagram. Frequently, all that is required to establish a connection to the ...

Let's face it, the Internet is not a very safe place. There are hackers trying to access your computer, worms trying to infect you, malicious Trojans disguised as helpful programs, and spyware that ...