Configuring the ICS Computer

How you configure the ICS computer depends on whether it connects to the Internet using an analog modem or ISDN connection, or a high-speed device such as a DSL or cable modem. www.tartoos.com

 Note

The ICS computer automatically assigns IP addresses, forwards DNS names to the Internet for resolution, and assigns itself as the default gateway for connecting to the Internet. If any of the clients on the branch office’s intranet are providing these functions, Internet Connection Sharing might not work.

Configuring an ICS Computer with an Analog Modem or ISDN Connection

In this configuration, the ICS computer connects to the Internet using an analog modem or ISDN connection. The ICS computer and all of the other computers in the Seattle branch office, are connected to the branch office’s intranet using network adapters. Figure 21.15 shows how an Internet connection is shared using an analog modem or an ISDN connection. www.tartoos.com

Figure 21.15 Internet Connection Sharing Using an Analog Modem or ISDN Connection

Install the analog modem (or make sure you have a modem installed) on the ICS computer you want to use to access the Internet. If you are installing an analog modem in the ICS computer for the first time, Windows 2000 Plug and Play automatically detects and configures it.

Open the Network and Dial-Up Connections folder, and then double-click Make New Connection. This starts the Windows 2000 Network Connection Wizard to set up the connection to your Internet service provider (ISP). Configure the connection by using the settings provided by your ISP.

After the wizard has created the new connection to your ISP, Windows 2000 adds a new icon for the connection in the Network and Dial-Up Connections folder. Test the new Internet connection by connecting to your ISP and verifying that you can browse the World Wide Web.

Next, open the Properties of the new connection, click the Sharing tab, and then select the Enable Internet Connection Sharing for this connection check box.

Next, check the configuration of the clients, as described in “Configuring the Branch Office Client Computers” later in this section. Finally, verify the shared ICS connection by browsing the World Wide Web from one of the clients on the branch office intranet.

Configuring an ICS Computer with a DSL or Cable Modem Connectionwww.tartoos.com

In this configuration, the ICS computer connects to the Internet using a second network adapter connected to a high-speed DSL or cable modem. The ICS computer connects to the other computers in the Seattle branch office’s intranet using the first network adapter. The rest of the computers in the branch office connect to the local intranet using other network adapters. Figure 21.16 shows how an Internet connection is shared by using a DSL or cable modem connection.

Figure 21.16 Internet Connection Sharing Using a DSL or Cable Modem Connection

Rename the local area connection for the branch intranet (“Office Intranet,” for example) on the ICS computer that you want to use to access the Internet, and then install the second network adapter (or make sure you have a second network adapter installed) to connect to the DSL or cable modem connection. If you are installing the second network adapter for the first time, Windows 2000 Plug and Play automatically detects and configures it.

Next, open the Properties of the new connection, and configure the connection by using the settings provided by your ISP. Next, click the Sharing tab, and then select the Enable Internet Connection Sharing for this connection check box. www.tartoos.com

 Note

Rename the new external connection to the Internet to differentiate it from the branch office’s intranet.

Test the new Internet connection by connecting to your ISP and verifying that you can browse the World Wide Web.

Finally, check the configuration of the clients (as described in the following section) and then verify the shared ICS connection by browsing the World Wide Web from one of the clients. www.tartoos.com