What Is Internet Connection Sharing ?

Internet connection sharing is essential if you want to use one internet connection for all computers in your network.

Setting up of Internet connection sharing depends on OS of your computers. With the Internet Connection Sharing (ICS) feature of network and dial-up connections, you can use Windows to connect your network to the Internet. By enabling ICS on the computer that uses the dial-up connection, you are providing network address translation, addressing, and name resolution services for all computers on your network. Microsoft Internet Connection Sharing enables a computer connected to the Internet via a cable or DSL modem to share its connection with other computers connected to it. This kind of sharing might not be the best, but it is cheap because of its minimal hardware requirements and fairly straight forward to set up.

How To Setup Internet Connection Sharing

Before setting up the ICS server for a dial-up connection, make sure that you've completed the preliminary steps listed here.

Open the Network and Dial-up Connections folder. Then right click the Dial-up connection that you want to share and select Properties.

The Properties shows the network components associated with the connection.

Click the Advanced tab, then check Allow other network users to connect through this computer's Internet connection.
If you have more than one network adapter connected to local area networks, select the one which you will use for sharing the Internet connection.

Check Establish a dial-up connection whenever a computer on my network attempts to access the Internet if you want the ICS server to automatically connect to the Internet. Otherwise, you'll have to connect manually whenever any computer wants Internet access.

Uncheck Allow other network users to control or disable the shared Internet connection to prevent clients from disconnecting other users from internet.

Click OK. If your local area network adapter already has an IP address assigned, WinXP warns you that it will change it. Click Yes to continue.

Network Card Setup

Before you configure clients to be able to share ICS in network, you need make setup on the their network cards, after which they will be able to access to the internet, even if they are not directly connected to the DSL or cable modem. This procedure is pretty painless and essentially the same for all methods of Internet connection sharing.

Open the Network and Dial-up Connections folder.

Then right click the LAN or High-Speed Internet connection and press on properties. In new window highlight TCP-IP settings and press the properties button.

Select the Use the following IP adresses and set IP adress, subnet mask and default gateway.

Also, select Use the following DNS server adresses option and set provider DNS.

Select Advanced tab and select Allow other computers to connect...

Press on OK to complete Setup.

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