Windows Server Guides

Device Redirection

Once a user has successfully connected, Windows Server 2003 and the Remote Desktop client provide a wide array of device redirection options, including:

■ Audio redirection, which allows audio files played within the Terminal Server session to be played by the user's PC. This feature is specified on the Local Resources tab of the Remote Desktop Connection client, as shown in Figure 2-12. However, audio redirection is disabled by default in the Client Settings tab of the RDP-Tcp Properties dialog box, as shown in Figure 2-18. Audio redirection can be specified by a GPO.

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General | Logon Settings j Sessions | Environment Remote Control Client Settings | Network Adapter | Permissions

_ Connection-

[7 ¡Use connection settings fiom user settings

Connect client drives at logon W Connect eJient printers at logon W Default to main client printer

[7 Limit Maximum Color Depth

11G bit 3

Disable the following:

Drive mapping [~C0M port mapping I- Windows printer mapping Clipboard mapping r- LPT port mapping |7 Audio mapping

Figure 2-18 The RDP-Tcp Properties dialog box Client Settings tab

■ Drive redirection, which allows the user to access drives that are local to the user's PC from within the Remote Desktop session. Local drives are visible in My Com

Note A terminal server has one RDP-Tcp connection by default and can have only one connection object per network adapter, but if a terminal server has multiple adapters, you can create connections for those adapters. Each connection maintains properties that affect all user sessions connected to that server connection.

puter under the Other group, as shown in Figure 2-19. This option is disabled by default, and can be enabled in the Local Resources tab of the Remote Desktop client. Terminal Server Configuration can override the client setting and disable drive redirection from the properties of the connection. These settings can also be specified by Group Policy. The user account's Connect Client Drives At Logon setting does not affect drive redirection using the Remote Desktop Connection client; it is meant to manage drive redirection for Citrix's Integrated Computing Architecture (ICA) clients.

J My Computer				■ _ |n|x
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Address | j My Computer				zi
Name	I Type |	Total Size |	Free Space |	Comments
Hard Disk Drives
Local Disk(C:)	Local Disk	3.99 GB	2,35 GB
•^SHARED FOLDER.	.. Local Disk	3.81 GB	3,43 GB
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0EN_WSO3VL (D:)	CD Drive	623 MB	0 bytes
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2£D on SERVER01	System Folder			Disk from Remote Desktop Connection
^C on SERVER01	System Folder			Disk from Remote Desktop Connection
2ÊA on SERVER01	System Folder			Disk from Remote Desktop Connection
2£Z on SERVER01	System Folder			Disk from Remote Desktop Connection
8 objects			r~	| -J My Computer

Figure 2-19 My Computer in a Remote Desktop session showing redirected client drives

Figure 2-19 My Computer in a Remote Desktop session showing redirected client drives

■ Printer redirection, which allows the user to access printers that are local to the user's workstation, as well as network printers that are installed on the user's workstation, from within the Remote Desktop session. The Printers And Faxes folder will display printers that are installed on the terminal server as well as the client's redirected printers, as shown in Figure 2-20.

Figure 2-20 The Printers And Faxes folder shows a client's redirected printer

Like drive redirection, printer redirection is specified in the Local Resources tab of the Remote Desktop Connection client. Printer redirection can be disabled by properties of the RDP-Tcp connection. Printer redirection will also be disabled if the Connect Client Printers At Logon setting is not enabled in the user account properties, as shown in Figure 2-21. Selecting this option in the user account does not cause printer redirection; the client must specify redirection in the Local Resources tab. But if disabled, the user account setting will override the client setting. The user account properties also provide a Default To Main Client Printer setting which, if enabled while printer redirection is in effect, will set the default printer in the Remote Desktop session to the same printer set as default on the user's workstation. If the Default To Main Client Printer setting is disabled, the Remote Desktop session will use the default printer of the terminal server computer. Printer redirection settings can be specified by a GPO.

E Remote control Terminal Services Profile C0M+

General | Address | Account | Profile 1 Teleehones | Organisation Member Of | Dial-in Environment | Sessions

Use this tab to configure the Terminal Services startup environment. These settings override client-specified settings.

^ r |tar't the foiiowing program ai iogon:|

Client devices

I»* Connect client drives at logon P Connect client printers at logon I»* Default to main client printer

Figure 2-21 The Environment tab of a user's properties dialog box

■ Serial Port redirection, which allows a user to launch an application within a terminal server session that uses a device, such as a barcode reader, attached to the serial port of the user's workstation. This feature is also in the Local Resources tab of the client and can be disabled in the properties of the RDP-Tcp connection. Serial port redirection can be specified by a GPO.

■ LPT and COM port mapping, which allows a user to install a printer within the Terminal Server session that maps to a printer attached to an LPT or COM port on the user's workstation. This method of printer redirection is not necessary with Windows Server 2003 and the Remote Desktop Connection client, which support printer redirection in a much simpler way as described above. LPT and COM port mapping is, however, still done by default. The RDP-Tcp connection properties can disable port mapping, as can a GPO.

■ Clipboard mapping, which allows the user to copy and paste information between a Remote Desktop session and the client's workstation. This feature is enabled by default in the Remote Desktop Connection client and cannot be changed within the client's user interface (UI). The RDP-Tcp connection properties can disable clipboard mapping, as can a GPO.

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