Article ID: 310563 - View products that this article applies to.
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Internet Connection Sharing provides networked computers with the ability to share a single connection to the Internet. This article describes the Internet Connection Sharing feature in Microsoft Windows XP.
Note This article is for informational use only, and because of this, it may not contain troubleshooting information. For problem-solving information that is related to Internet Connection Sharing, try searching the Microsoft Knowledge Base again by using the following query words and keywords:
(http://support.microsoft.com/kb/242450/ )How to query the Microsoft Knowledge Base by using keywords and query words
With Internet Connection Sharing, you can connect computers on your home or on your small office network to the Internet over a single connection. For example, if you turn on Internet Connection Sharing on a computer that connects to the Internet by using a dial-up connection, other computers on the network can connect to the Internet through the dial-up connection on the Internet Connection Sharing host.
You can use Internet Connection Sharing to permit yourself and others on your local area network (LAN) to perform different tasks at the same time. For example, one person can send and receive e-mail messages, while another person downloads a file, and yet another person browses the Internet. You can also gain access to your corporate e-mail accounts from a client computer while others on your LAN cannot. You can use Web-enabled programs (such as downloading updates) and Microsoft NetMeeting and other video conferencing programs.
Internet Connection Sharing capabilities
Windows support for Internet Connection SharingTo connect multiple computers to the Internet through a single Internet connection, you must turn on Internet Connection Sharing on the computer that you want to use as the Internet Connection Sharing host. Other computers on your LAN can then gain access to the Internet through the connection on the Internet Connection Sharing host computer.
Note Internet Connection Sharing is a built-in feature of Microsoft Windows and is not a component that is available for download. In addition to Windows XP-based computers, you can turn on Internet Connection Sharing on computers that are running Microsoft Windows 98 Second Edition, Microsoft Windows Millennium Edition (Me), and Microsoft Windows 2000.
Internet Connection Sharing componentsThe following is a list of Internet Connection Sharing components:
Set up a network with Internet Connection SharingYour Internet Connection Sharing network is a type of local area network that relies on a single computer that is referred to as a gateway through which all other computers and TCP/IP-capable devices connect to the Internet.
The hardware and software that you must have to set up a home network includes the following:
Turn on Internet Connection SharingBefore you can turn on Internet Connection Sharing on a host computer, the computer must have two network connections present. One network adapter configured to connect to the internal home or small office network, and another connection that is using a 56K modem, ISDN, DSL, or cable modem to connect the small home or office network to the Internet.
For step-by-step instructions to turn on Internet Connection Sharing, click the following article number to view the article in the Microsoft Knowledge Base:
306126For additional information about how to turn on Internet Connection Sharing, click the following article numbers to view the articles in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/306126/ )HOW TO: Configure Internet Connection Sharing in Windows XP
(http://support.microsoft.com/kb/237254/ )How to enable Internet Connection Sharing on a network connection in Windows 2000
283673If you are setting up a home or a small office network, you can use the Network Setup Wizard to turn on Internet Connection Sharing. The Network Setup Wizard automatically provides all the network settings that you must have to share one Internet connection with computers on your network.
(http://support.microsoft.com/kb/283673/ )HOW TO: Enable or disable Internet Connection firewall in Windows XP
For additional information about the Network Setup Wizard, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/308522/ )Description of the Network Setup Wizard in Windows
For additional information about home networking and about Internet Connection Sharing in Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
324980For additional information about how to configure Internet Connection Sharing in Windows XP for an Internal PPTP Server, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/324980/ )Support WebCast: Home networking and Internet Connection Sharing in Microsoft Windows XP
(http://support.microsoft.com/kb/309524/ )How to configure Windows XP ICS for an Internal PPTP server