Set up a shared Internet connection using ICS (Internet Connection Sharing)

You can use Internet Connection Sharing (ICS) to share an Internet connection among two or more computers on a network. First, you'll need one computer, called the host computer, that's connected to the Internet and that has a separate connection to the other computers on your network. You'll enable ICS on the Internet connection. The other computers on your network then connect to the host computer, and from there to the Internet through the host computer's shared Internet connection.

If your computer is connected to a network, network policy settings might prevent you from completing these steps.

On the host computer (the computer whose Internet connection you plan to share):

  1. Open Network Connections by clicking the Start button Picture of the Start button, and then clicking Control Panel. In the search box, type adapter, and then, under Network and Sharing Center, click View network connections.

  2. Right-click the connection that you want to share, and then click Properties. Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation.

  3. Click the Sharing tab, and then select the Allow other network users to connect through this computer’s Internet connection check box.


  • The Sharing tab won't be available if you have only one network connection.

After you've followed the steps above to set up ICS on the host computer, make the following changes on all of the other computers (but not on the host computer).

  1. Open Internet Options by clicking the Start button Picture of the Start button, clicking Control Panel, clicking Network and Internet, and then clicking Internet Options.

  2. Click the Connections tab, and then click Never dial a connection.

  3. Click LAN Settings.

  4. In the Local Area Network (LAN) Settings dialog box, Under Automatic configuration, clear the Automatically detect settings and Use automatic configuration script check boxes.

  5. Under Proxy server, clear the Use a proxy server for your LAN check box, and then click OK.

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