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Prohibit Access To The New Connection Wizard Ability To Change Properties Of An All-User Remote Access Connection Prohibit Access To Properties Of Components Of A Remote Access Connection Prohibit Connecting And Disconnecting A Remote Access Connection Prohibit Changing Properties Of A Private Remote Access Connection Ability To Rename All User Remote Access Connections Ability To Rename LAN Connections Or Remote Access Connections Available To All Users Ability To Rename LAN Connections Prohibit Renaming Private Remote Access Connections Prohibit Viewing Of Status For An Active Connection 3 3 3 3
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he error codes returned by the built-in remote access client have been improved in Windows Vista and later versions to help you troubleshoot your
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connections. Table 27-6 describes some common error codes.
TABlE 27-6 Common Error Codes Returned by the Built-In Remote Access Client in
Windows Vista and Later Versions ERROR CODE CAUSE RESOlUTION
Generic Route Encapsulation (GRE) packets are getting dropped
Look for any firewall between VPN client and server and enable GRE (IP protocol 47) to pass through it .
Managing Connections Using Group Policy
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ERROR CODE
CAUSE
RESOlUTION
Policy mismatch between client and server Encryption type mismatch between client and server VPN connection is disconnected after getting established
Check the encryption and authentication settings between the client and server . Check the encryption settings between client and server . VPN server reaching capacity or latency has increased and your VPN server is no longer reachable . Troubleshoot server- or connectivityrelated problems . Check DNS name resolution, and also check underlying Layer 2 network connectivity .
741, 742
The remote connection was not made because the name of the remote access server did not resolve .
In Windows Vista and later versions, a failure to connect in a VpN connection will also provide a Diagnose option in addition to the error message describing the cause of failure. When you select the Diagnose option, Windows Network Diagnostics is used to try to diagnose the cause of the VpN connection failure. Note that Windows may not always be able to successfully diagnose the root cause of the problem, given the complexity of Internet architecture and lack of access to the network infrastructure along the path between the VpN client and the VpN server.
In addition to ppp logging, which is still available in Windows Vista and later versions, Netsh-based logging is available, which can assist Microsoft support services in resolving your problem. To use Netsh for diagnosing connection failures, perform the following steps from a command prompt. (Note that administrator privileges are required to execute the following commands.) 1 . Click Start, click all programs, click accessories, and then right-click Command
prompt to start an elevated command prompt. Select Run as administrator and respond to the UaC prompt that appears.
2. Type the command netsh ras set tracing * disable in the elevated command
prompt.
3. Delete all files (if any) in the %WinDir%\Tracing folder. 4. Type the command netsh ras set tracing * enable in the elevated command
prompt.
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Connecting Remote Users and Networks
5. Reproduce the error condition (for example, launch the VpN connection and
click Connect) and wait for failure to happen.
6. Type the command netsh ras set tracing * disable in the elevated command
prompt.
7. put all the files from the %WinDir%\Tracing folder in a compressed (.zip) file and
send it to your Microsoft representative for analysis. This tracing will help Microsoft representatives to find a resolution for your problem more quickly.
Using Remote Desktop
Remote Desktop is an extension of Remote Desktop Services, a Windows technology that provides users with the flexibility of working on their computers from anywhere, at any time . Using Remote Desktop, users can run applications on a remote computer running Windows 7 or Windows Server 2008 R2 from any other computer running a supported Windows operating system . Additionally, Remote Desktop can allow administrators to remotely manage both desktop computers and servers as if they were interactively logged on at the local console of these computers .
note
In previous versions of Windows, Remote Desktop Services was called Terminal
Services. See the section titled Understanding Remote Desktop Services Terminology later in this chapter for more information about terminology changes in Windows Server 2008 R2 and Windows 7.
note
Remote Desktop is different from Remote assistance, which is also based on
Remote Desktop Services technology. For more information about Remote assistance, see 22, Supporting Users with Remote assistance.
Understanding Remote Desktop
Remote Desktop consists of the following features:
Remote Desktop Protocol (RDP) Remote Desktop client software that is, Remote Desktop Connection (RDC)
Using Remote Desktop
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Understanding Remote Desktop protocol
Remote Desktop Protocol (RDP) is a protocol that transmits keyboard input, mouse input, and display output information between a remote computer and a host computer that is, a Remote Desktop Session Host or a computer running Windows that has Remote Desktop enabled (see Figure 27-8) . The network connection between the computers can be any TCP/IP network connection, including LAN, WAN, VPN, or dial-up .
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