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This chapter is from the book

Enabling / Adjusting / Disabling Internet Connection Sharing

Before enabling the ICS, ensure the previous issues are not applicable or are accounted for.

  1. Right click on Network Neighborhood and click on Properties

  2. Right click the connection that you want to enable the ICS on and select Properties

  3. Select the Advanced tab

  4. Select the Allow other network users to connect through this computer's Internet connection check box in the Internet Connection Sharing frame

  5. In order for the connection to automatically dial upon an Internet request from the network, select the Establish a dial-up connection whenever a computer on my network attempts to access the Internet check box.

  6. In order for other users on the network to control the status of the ICS, select the Allow other network users to control or disable the shared Internet connection check box.

Setting up the client for ICS

As previously mentioned, there are two parts to the ICS; the client and the host. We have already covered the host side; next we will discuss the client side. Fortunately, setting up the client is a rather simple thing if everything on the host side was done properly. In fact, it can all be taken care of by running a simple program from a floppy on each client computer.


The Network Setup Wizard can only be run on computers using Windows 98, Windows 98 Second Edition, Windows Millennium Edition, or Windows XP.

To create the Network Setup Client Disk

  1. Start the Network Setup Wizard

  2. Follow the steps on your screen to configure your home or small office network.

  3. In order to correctly run the Network Setup Wizard:
    • Host Name – Desired name of host computer (if using cable modem, do not change the preexisting name without checking with the cable company)

    • Workgroup Name – Name of your network

    • Floppy Disk – Used to create the Network Setup Client Disk

  4. When you come to the page that reads "You're almost done", insert a blank, formatted floppy disk into the drive, and then click Create Disk.

To run the Network Setup Program

  1. Insert the network setup disk into the computer you want to network.

  2. Double-click My Computer.

  3. Double-click 3 ½ Floppy (A:).

  4. Double-click netsetup.exe.

Network Bridging

Network Bridging is another of the many enhancements that are new with Windows XP. This program gives its owner the ability to connect two segments of a network together easily and inexpensively. Although the average home user will never use this technology, the advanced or corporate user might. Traditionally, administrators needed extra hardware or specialized software to perform this task. In addition, with specialized software, the user would need to have a superior understanding of network routing protocols to successfully set up the network.

Network Bridging is an alternate solution that is as easy as selecting the two connections that need bridged and selecting the 'Bridge Connections' option. Not only does Windows XP take care of different media problems, but it also takes care of converting different protocols, something that would have previously required costly equipment or advanced software settings.

Windows XP also uses the IEEE spanning tree algorithm (STA) to ensure that there are no loops created in complex networks. This ensures that if a network loops back on itself, data will not continue to travel around the network and clog the system.

Although the Network Bridge can be incredibly beneficial, it can also cause a serious security issue if it is enabled on the device used to connect to the Internet. This will give the world permission to access the internal network. For this reason, Windows XP makes it difficult to enable Network Bridging on an Internet connection. However, with the advent of high-speed connections and the increased use of Ethernet cards in these connections, it is entirely possible to bridge the Internet connection.

The following tips should be observed when enabling Network Bridging:

  • In order to enable or disable network bridging, you must be logged in as an owner

  • You must have two qualified connections to create a Network Bridge

  • Only qualified adapters can be used to create a Network Bridge (IEEE-1394, Ethernet, Wireless, etc.)

  • You can only create Network Bridges on Windows version XP and higher

  • You cannot create a Network Bridge on a connection using ICF or ICS

  • Only one Network Bridge can be created on a computer; however, the bridge can support unlimited connections

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