IP addresses are the fundamental method for computers to
identify themselves on most computer networks. Every computer (or other network
device) connected to the Internet has an IP address. This tutorial explains the
basics of finding, changing, and hiding (your) my IP addresses.
Inside IP Addresses
IP addresses are written in a notation using numbers
separated by dots. This is called dotted-decimal notation. Examples of
IP addresses in dotted-decimal notation are 10.0.0.1 and 192.168.0.1 although
many millions of different IP addresses exist.
Finding IP Addresses
Everyone who needs to use a computer network should
understand how to look up their own IP addresses. The exact procedure to follow
depends on the kind of computer you use. Additionally, in some situations you
may need to find the IP address of someone else's computer.
Fixing IP Address Problems
When a computer network is functioning properly, IP addresses
stay in the background and don't require any specific attention. However, some
common problems you may encounter when setting up or joining a computer network
include:
- A computer has no IP address
- Two computers have the same IP address
- A computer has a "bad" IP address that won't allow it to "talk" on the network
To solve
these problems, several techniques can be applied including IP address release
/ renew, setting static IP addresses, and updating the subnet configuration
Hiding IP Addresses
Your public IP addresses are shared with others over the
Internet, and this raises privacy concerns in the minds of some people. IP
addresses allow your Internet usage to be tracked and give some rough
information about your geographic location.
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