Info

Open Network and Sharing - -

Center

Figure 14-3. Connecting to a network or disconnecting from a network

Change homegroup settings

This computer belongs to a homegroup. Share libraries and printers

Pictures g] Music [f] Videos

150 Documents □ Printers

How do i share additional libraries? How do I exclude files and folders? Share media with devices |T| Stream my pictures, music, and videos to all devices on my home network

Choose media streaming options... Note: Shared media is not secure. Anyone connected to your network can receive your shared media. Other homegroup actions —

View or print the homegroup password Change the password... Leave the homegroup... Change advanced sharing settings,.. Start the HomeGroup troubleshooter

Figure 14-4. Managing homegroup settings

You can configure homegroup settings only when you are connected to the homegroup. If you are not connected to a home network, you won't able to change homegroup settings.

Troubleshoot problems

Clicking this option provides access to the built-in network and printing trouble-shooters. The network troubleshooters allow you to have Windows 7 automatically try to detect problems with your networking configuration. As Figure 14-5 shows, each troubleshooter is related to a specific type of problem, such as Internet connections or Homegroups. To start a troubleshooter, simply click its listing. Network Diagnostics can help to identify different problems related to an inability to connect to the Internet, connect to network resources, or find resources on the network. Although these tools help to identify network problems, they are not a substitute for the tools available to find and diagnose low-level problems, such as the Event Viewer and command-line tools like ping and tracert. The trouble-shooters will enable and disable your network adapter, check for a new IP address from the DHCP server, and check for connectivity. If you have recently set up a network connection and you find that it does not work, the troubleshooters will help to identify these simple problems.

The network and printing troubleshooters are designed for resolving specific types of problems. They work well when you think you know v ^ » the source of a problem. For example, if you suspect that your computer has a problem with the network adapter configuration, you can use the Network Adapter troubleshooter to try to diagnose and resolve the problem.

In the Network and Sharing Center, the Network Overview shows warning icons. Similar warning icons are displayed on the Network Map as well. Clicking one of these warnings icons starts Windows Network Diagnostics, which runs a high-level network diagnostics that makes use of the appropriate network troubleshooters automatically.

In the left pane of the Network and Sharing Center screen, you'll find options to manage wireless networks, change adapter settings, and change advanced sharing settings:

Manage wireless networks

This option allows you to see wireless connections already configured or available for your use, as shown in Figure 14-6. You may also:

• Add a wireless connection by selecting the Add button. When you select this option, you are presented with a window asking you for specific information about how you want to add a network. You can add a network that is in range of the computer, manually create a network profile, or create an ad hoc

Figure 14-5. Use troubleshooters to diagnose and resolve problems
Figure 14-6. Managing wireless connections

(computer-to-computer) network. If you have already enabled a wireless connection, select the first option, which allows you to connect to the wireless network and saves a configuration profile for future use. If you would like to create a new wireless profile, you need to know the network name, security type and security key, if enabled. This option also creates a configuration profile for the wireless network for future use. The last option allows you to create an ad hoc network connection. An ad hoc network is a temporary network for the transmission of files among machines not connected via a wireless access point. This option works well if you need to transfer data with someone else and you both have a wireless card in your computer.

• View the properties of a selected wireless adapter by clicking the "Adapter properties" button. You will see a window that allows you to manipulate the different protocols associated with the wireless adapter, including TCP/IP properties, file and printer sharing, and the Microsoft network client protocol. These settings reside on the Networking tab; the Sharing tab allows you to configure Internet Connection Sharing (ICS) for this adapter. Selecting the Configure button on the Networking tab allows you to view and manage additional features of your wireless adapter.

• Choose the type of profile to assign to new wireless networks by clicking the Profile types button. The default setting in Windows 7 is "Use all-user profiles only." This setting allows connections to wireless networks from your computer to be accessed only by those with user accounts on the computer. Selecting the "Use all-user and per-user profiles" allows users to create connections accessible only to them, which can cause a loss of network connectivity if you log off or switch users on the local system. Microsoft recommends that you use the "Use all-user profiles only" option, which allows greater flexibility and lessens the chance of lost network connectivity.

Change adapter settings

This allows you to view and change the properties of your computer's network adapters. As shown in Figure 14-7, this includes standard network adapters, wireless adapters, Microsoft VPN connections, and any other software or hardware adapter allowing you network connectivity. Change advanced sharing settings

This shows the status of different aspects of network discovery and sharing. As shown in Figure 14-8, Windows creates a separate profile for each type of network you use. You can choose specific options for each profile. Clicking the Expand button for a profile allows you to manage the aspects of that profile. Clicking the Shrink button minimizes the management section for a profile. Network discovery must be on to discover information about your network. When you are connected to a home, work, or domain network, network discovery is turned on automatically to allow you to discover computers and devices. When you are connected to a public network, network discovery is turned off to prevent other people from discovering and then trying to access your computer. To enable network discovery if it isn't already enabled, click "Turn on Network Discovery" and then click Save Changes.

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