print barcode labels c# Configuring Wireless Settings Manually in C#

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Configuring Wireless Settings Manually
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Windows 7 makes it very easy to connect to a wireless network using the enhanced View Available Networks (VAN) feature included in the platform . For example, to configure a wireless network that is currently available, follow these steps:
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Click the networking icon in the notification area .
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The WLaN autoConfig service must be started for wireless networks to be
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available. This service by default is set to start automatically.
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Click the network to which you want to connect and then click Connect, as shown in Figure 25-14 .
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FIgURE 25-14 The Network Connection Details dialog box
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provides graphical access to IP configuration settings .
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How to Configure Wireless Settings
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CHapTER 25
note
a network that is configured not to broadcast an SSID will appear as an
Unnamed Network, allowing you to connect to the network.
If the network is encrypted, provide the encryption key .
Why Disabling SSID Broadcasting Doesn t Improve Security
ireless networks broadcast an SSID that specifies the network name to help users who have not connected to the network previously find it. However,
disabling the SSID broadcast does not increase security, because the tools that a malicious attacker might use to find and connect to your wireless network do not rely on SSID broadcasts. The SSID broadcast does make it easier for legitimate users to find and connect to your wireless networks. So by disabling the broadcast of the SSID, you can negatively affect the people whom you do want to be able to connect.
Using Group policy to Configure Wireless Settings
In AD DS environments, you can use Group Policy settings to configure wireless network policies . For best results, you should have Windows Server 2003 SP1 or later installed on your domain controllers because Microsoft extended support for wireless Group Policy settings when they released SP1 . Before you can use Group Policy to configure wireless networks, you need to extend the AD DS schema using the 802 .11Schema .ldf file included on this book s companion media . If you do not have access to the companion media, you can copy the schema file from http://technet.microsoft.com/en-us/library/bb727029.aspx . To extend the schema, follow these steps:
1. 2. 3.
Copy the 802 .11Schema .ldf file to a folder on a domain controller . Log on to the domain controller with Domain Admin privileges and open a command prompt . Select the folder containing the 802 .11Schema .ldf file and run the following command (where Dist_Name_of_AD_Domain is the distinguished name of the AD DS domain whose schema is being modified; an example of a distinguished name is DC=wcoast,DC=microsoft,DC=com for the wcoast .microsoft .com AD DS domain) .
ldifde -i -v -k -f 802.11Schema.ldf -c DC=X Dist_Name_of_AD_Domain
Restart the domain controller .
After you extend the schema, you can configure a wireless network policy by following these steps:
Open the Active Directory GPO in the Group Policy Object Editor .
CHapTER 25 Configuring Windows Networking
2. 3. 4.
Expand Computer Configuration, Windows Settings, Security Settings, and then click Wireless Network (IEEE 802 .11) Policies . Right-click Wireless Network (IEEE 802 .11) Policies and then click Create A New Windows Vista Policy . The Wireless Network Properties dialog box appears . To add an infrastructure network, click Add and then click Infrastructure to open the Connection tab of the New Profile Properties dialog box . In the Network Names list, click NEWSSID and then click Remove . Then, type a valid internal SSID in the Network Names box and click Add . Repeat this to configure multiple SSIDs for a single profile . If the network is hidden, select the Connect Even If The Network Is Not Broadcasting check box . On the New Profile Properties dialog box, click the Security tab . Use this tab to configure the wireless network authentication and encryption settings . Click OK .
This resource kit does not cover how to design wireless networks. However, you
note
should avoid using Wired Equivalent privacy (WEp) whenever possible. WEp is vulnerable to several different types of attack, and WEp keys can be difficult to change. Whenever possible, use Wpa or Wpa2, which both use strong authentication and dynamic encryption keys.
The settings described in the previous process will configure client computers to connect automatically to your internal wireless networks and to not connect to other wireless networks .
Configuring Wireless Settings from the Command Line or a Script
You can also configure wireless settings using commands in the netsh wlan context of the Netsh command-line tool, which enables you to create scripts that connect to different wireless networks (whether encrypted or not) . To list available wireless networks, run the following command .
Netsh wlan show networks Interface Name : Wireless Network Connection There are 2 networks currently visible SSID 1 : Litware Network Type Authentication Encryption SSID 1 : Contoso Network Type Authentication Encryption : Infrastructure : Open : WEP : Infrastructure : Open : None
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