An IP address can be static or dynamic. When an IP address is static, it means it never changes and it becomes the permanent internet address of a particular device. A dynamic IP address on the other hand is a temporary internet address assigned to a computer each time it accesses the internet. The major advantage of a dynamic address compared to a static IP is there are lesser security risks due to the fact that the address changes every time the client logs onto the internet. But on the other hand, static address is an excellent choice for hosting and remote computing.

How To Determine If Your Computer Is Being Assigned The External IP Address

For Windows 2000, XP, and 2003
1. Click Start
2. Click Run
3. Type in cmd and hit ok
4. Type ipconfig and hit enter

For Vista
1. Click Start
2. Click All Programs expand the Accessories menu
3. In the Accessories menu, Right Click Command Prompt and choose Run as administrator
4. Type ipconfig hit enter