Enable Internet connection sharing on a network connection

Open Network and Dial-up Connections
Right-click the dial-up, VPN, or incoming connection you want to share, and then click Properties.
On the Sharing tab, select the Enable Internet connection sharing for this connection check box.
If you want this connection to dial automatically when another computer on your home network attempts to access external resources, select the Enable on-demand dialing check box.

Important

You should not use this feature in a network with other Windows 2000 Server domain controllers, DNS servers, gateways, DHCP servers, or systems configured for static IP.
When you enable Internet connection sharing, the network adapter connected to the home or small office network is given a new static IP address configuration. Existing TCP/IP connections on the Internet connection sharing computer are lost and need to be reestablished.
To use the Internet connection sharing feature, users on your home office or small office network must configure TCP/IP on their local area connection to obtain an IP address automatically. For more information, see To configure TCP/IP settings Home office or small office network users must also configure Internet options for Internet connection sharing. For more information, see To configure Internet options for Internet connection sharing
If the Internet connection sharing computer is using ISDN or a modem to connect to the Internet, you must select the Enable on-demand dialing check box.

note Note

To open Network and Dial-up Connections, click Start, point to Settings, and then click Network and Dial-up Connections.
To enable Internet connection sharing, you must be a member of the Administrators group.
For information about the protocols, services, interfaces, and routes that are automatically configured, see Related Topics.