Hiding an identity of a computer commonly referred as IP address is primarily done to conceal your identity and location. Some methods rely on completely hiding all or part of the IP address and some methods simply change the IP address to a new one via a free or fee-based proxy server. Remember that some Internet Service Providers (ISPs) limit the number of times a new IP address can be issued.
Following steps explain how to hide a computer's ID in Windows XP.
1). Unplug your modem and router from the power outlet. Unplug all cables that exist between the computer, modem and router. Plug back in the modem, router and all the cables to their proper places.
2). Browse to the What Is My IP website to determine your current IP address. Write down this number to compare it with your new IP address later.
3). Click the "Start" button on your desktop, and then select "Run." In the "Run" box, enter the letters "cmd" and select the "OK" button. When the command box appears, enter "ipconfig /release" and press the "Enter" key. Note that there is a space before the slash.
4). Click the "Start" button on your desktop, then "Connect To" and finally "Show All Connections." Right-click "Local Area Connection" and select "Properties" from the drop-down menu. Under the "General" tab, highlight "Internet Protocol (TCP/IP)" and click properties.
5). In the "IP address" box, enter the numbers "111 . 111 . 111 . 111." In the "Subnet mask" box.
Enter the numbers "255 . 0 . 0 . 0." Click the "OK" button and close all boxes.
Wait 30 seconds to 45 seconds before moving on to Step 6.
6). Repeat Step 4 to return to the "Internet Protocol (TCP/IP)" box. Under the "General" tab, select the option titled "Obtain an IP address automatically" as well as the option titled "Obtain DNS server address automatically." Click "OK" and close all boxes. Wait at least 60 seconds before moving on to Step 7.
7). Go to the What Is My IP website to confirm that your IP address has been changed.
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