qr code generator vb net Lesson 2: Advanced Wireless Configuration and Troubleshooting in .NET framework

Create Code-39 in .NET framework Lesson 2: Advanced Wireless Configuration and Troubleshooting

Lesson 2: Advanced Wireless Configuration and Troubleshooting
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point firmware and network adapter drivers to the latest versions. Then, work with the hardware vendor s technical support to continue troubleshooting the problem.
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Using Event Viewer to Analyze Wireless Connection Problems
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If a user calls you to discuss a problem connecting to a wireless network, that user might not have all the critical technical details that you need to know. Although the user might remember the SSID, the user probably doesn t know the security type required by the network or whether the network was 802.11b, 802.11g, or something different. Fortunately, Windows Vista records these technical details every time a user connects to a network. To view the details of wireless networks a user has connected to, follow these steps: 1. Click Start. Right-click Computer, and then click Manage. 2. Under Computer Management, expand System Tools, Event Viewer, Applications And Services Logs, Microsoft, Windows, and WLAN-AutoConfig. Then, select Operational. 3. In the middle pane, select an event log entry. This event log shows the details of attempted and successful connections to a wireless network. Figure 11-15 shows an example of Event ID 8001, which provides the details of a successful wireless network connection. As you can see, it shows the wireless network s SSID (Contoso4), the wireless network type (802.11g), and the authentication type (WPA2-Enterprise).
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Figure 11-15 Windows Vista creates an event when it successfully connects to a wireless network
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Configuring and Troubleshooting Wireless Networking
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Figure 11-16 shows an example of Event ID 12103, which indicates a wireless authentication failure. As you can see, this event shows the wireless network s SSID (Cotoso4) and the reason for the failure (Explicit Eap Failure Received). Using the time of the event, you could correlate the authentication failure with an event on the RADIUS server or the domain controller.
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Figure 11-16 How Windows Vista records detailed information about wireless network problems
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Windows Vista adds several events for any successful or unsuccessful connection. Additionally, if the user started Windows Network Diagnostics for troubleshooting assistance, you might find useful information in the System event log and the Applications And Services Logs\Microsoft\Windows\Diagnostics-Networking\Operational event log.
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Practice: Troubleshoot and Connect to a Wireless Network
In these practices, you troubleshoot a wireless network connection, and then connect to a WPA-EAP wireless network. Practice 1: Troubleshoot a Wireless Network Problem In this practice, you attempt to connect to a wireless network that has been previously configured with incorrect settings. To complete this practice, you must have completed Practice 1 in Lesson 1, Configuring Wireless Networking. 1. Access your wireless access point s configuration page. Typically, you can manage wireless access points using a Web browser. Specify an SSID of Contoso with WEP or WEP
Lesson 2: Advanced Wireless Configuration and Troubleshooting
Open security. Provide a complex key if your wireless access point does not automatically generate one for you, and make note of that key. 2. On your Windows Vista computer, click Start, and then click Connect To. The Connect To A Network Wizard appears. 3. On the Disconnect Or Connect To Another Network page, select Contoso. This time the Connect To A Network Wizard shows an error message. Because you had previously configured the Contoso wireless network with no security, it cannot automatically connect. 4. Right-click Contoso, and then click Diagnose. Wireless Network Diagnostics attempts to identify the problem. 5. In the Wireless Network Diagnostics dialog box, click View Wireless Security Settings To Verify That Correct Encryption Type Is Selected. 6. The Contoso Wireless Network Properties dialog box appears, allowing you to change the wireless security settings. Click the Security Type list, and then click No Authentication (Open). Then, click the Encryption Type list and click WEP. In the Network Security Key box, type the key you provided to the wireless access point. Then, click OK. 7. The Wireless Network Diagnostics dialog box reappears. Select Click Here When You Are Done to have Wireless Network Diagnostics retest the connection. 8. Click Close when Windows Network Diagnostics notifies you that the problem was resolved. Now open Microsoft Internet Explorer to verify that you can connect to the Internet across your wireless link. Practice 2: Configure a WPA-EAP Encrypted Wireless Access Point In this practice, you connect to a WPA-EAP protected wireless network. To complete this practice, you must have a wireless access point and a Windows Vista computer with a wireless network adapter. Additionally, you must have configured your Windows Server 2003 domain controller as an enterprise CA. For detailed instructions, complete Practice 3 of Lesson 1, Configuring and Troubleshooting Internet Explorer Security, in 5, Protecting Internet Explorer and Other Applications. 1. Log on to your Windows Server 2003 domain controller. 2. Click Start, Administrative Tools, and then Active Directory Users And Computers. Right-click Nwtraders.Msft (or your domain name), and then click Raise Domain Functional Level. In the Raise Domain Functional Level dialog box, select Windows Server 2003, and then click Raise. Then, click OK twice. The domain must be at the Windows Server 2003 functional level to support remote access policies. 3. In the Active Directory Users And Computers console, right-click Users, click New, and then click Group. Specify a Group Name of Wireless Users. Then, click OK. Double-click
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