Article ID: 316276 - View products that this article applies to.
This article was previously published under Q316276
This article describes how to share one Point to Point Protocol over Ethernet (PPPoE) Internet connection on your home network or your small-office network.
You can use the Windows XP Internet Connection Sharing (ICS) feature for network and dial-up connections to connect your home network or your small-office network to the Internet. For example, you may have a home network in which a Windows XP-based computer connects to the Internet by using a PPPoE broadband connection. If you enable ICS on the computer that uses the PPPoE connection, you can provide network address translation (NAT), addressing, and name resolution services for all of the computers on your network.
Note that for ICS to be enabled, the Windows XP-based computer must have two network adapters, one for the home or small-office network, and one for the Internet connection.
This article assumes that the PPPoE connection is set up, and that the intended ICS host can successfully connect to the Internet.
For additional information about how to create a PPPoE connection in Windows XP, click the article number below to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/283070/EN-US/ )HOW TO: Create a PPPoE Connection in Windows XP
To Enable ICS on a PPPoE Broadband Network Connection
IMPORTANT: When you enable ICS, the network adapter that is connected to the home or small-office network receives a new static IP address of 192.168.0.1, with a subnet mask of 255.255.255.0. Existing TCP/IP connections on the network may be lost, and if this occurs, you must re-establish them.
Configuration and Usage IssuesThe ICS feature is intended for use in a small office or in a home office in which the network configuration and the Internet connection are managed by the Windows XP-based computer on which the shared connection resides. It is assumed that on this network, this computer is the only Internet connection, this computer is the only gateway to the Internet, and this computer sets up all internal network addresses. All hosts on the network except the ICS host are expected to be configured to obtain IP address and DNS configuration automatically.
You cannot modify the default network configuration after you enable ICS. This includes changing the range of private IP addresses that are handed out (DHCP allocator), enabling or disabling DNS, and configuring a range of public IP addresses.
If your home office users need to gain access to a corporate network that is connected to the Internet by a tunnel server, the users need to create a virtual private network (VPN) connection to tunnel from the computer on the ICS network to the corporate tunnel server on the Internet. The VPN connection is authenticated and secure, and creating the tunneled connection allocates proper IP addresses, DNS server addresses, and WINS server addresses for the corporate network.
You may need to configure programs and services to work properly across the Internet. For example, if users on your home network want to play a game with other users on the Internet, the game must be configured on the connection in which ICS is enabled. Services that you provide must be configured so that Internet users can gain access to them.
For additional information about related topics, click the article numbers below to view the articles in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/298800/EN-US/ )Many PPPoE Clients from Third-Party Vendors May Not Operate Properly or Be Installed in Windows XP
(http://support.microsoft.com/kb/279658/EN-US/ )Error Message 'Error 633' When Starting Broadband Connection
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