How does ICS work?
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.
To enable ICS, on your host computer:
- Open Network Connections by clicking the Startbutton , and then clicking Control Panel. In the search box, type adapter, and then, under Network and Sharing Center, click View network connections.
- Right-click the connection that you want to share, and then click Properties. If you’re prompted for an administrator password or confirmation, type the password or provide confirmation.
- Click the Sharingtab, 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.
- You can choose whether to select the Allow other network users to control or disable the shared Internet connectioncheck box.
- Optionally, to allow other network users to use services running on your network, click Settings, and then select the services you want to allow.
When you enable ICS, your local area network (LAN) connection gets a new static IP address and configuration, so you’ll need to reestablish any TCP/IP connections between your host computer and the other network computers.
To test your network and Internet connection, see if you can share files between computers and make sure each computer can reach a website.
To use ICS, make sure the local area network (LAN) connection on each network computer is configured to get an IP address automatically. To do this:
- Open Network Connections by clicking 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.
- Right-click the LAN connection, and then click Properties. If you’re prompted for an administrator password or confirmation, type the password or provide confirmation.
- Click Internet Protocol Version 4 (TCP/IPv4)or Internet Protocol Version 6 (TCP/IPv6), and then click Properties.
- Click Obtain an IP address automatically or Obtain an IPv6 address automatically, and then click OK.
The Internet options on your network computers should also be configured for ICS. For more information, see Change Internet settings for ICS (Internet Connection Sharing).
Don’t use ICS on a network with domain controllers, DNS servers, gateways, or DHCP servers. And don’t use ICS on systems configured for static IP addresses.