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3. Connecting to a Windows Terminal Server To access the VNC server, enter its related password in the Enter Password field. Put a mark in the FullScreen check-box to have the remote computer’s desktop use all of the controller computer’s screen. Otherwise the remote desktop will be displayed in a window. Once you are satisfied with your settings, click on the Connection button to access the remote computer. 3. Connecting to a Windows Terminal Server Figure 24.3. Windows Terminal Services Options Select the Windows Terminal Services option to connect to Terminal Services on a Windows machine. Fill the Windows Hostname pull-down list with the host name of the Windows machine or its IP address. Select a desktop size in the Screen Size pull-down list and a language for the keyboard in the Keyboard Language pull-down list. Click on the Connection button once you’re satisfied with your settings.

2.2. Controlling Computer Setup Once you click on the Launch server this icon indicates that the computer is ready to accept incoming VNC connections. Closing it will stop the VNC server. Right-click on it to access a pop-up menu with some options. If the system to be controlled is behind a firewall, then you have to make sure that port tcp/5900+N is opened in the firewall, where N is the VNC server display number. 2.2. Controlling Computer Setup On the machine which will act as the controller (viewer) computer, select the Want to take control (linux client) option. Fill the Remote server Address pull-down list with the IP address or hostname of the computer to be controlled. Fill the Display Number field with the remote computer’s display number, or leave it empty to use the default (display number :0). Figure 24.2. Viewer Options

2.1. Controlled Computer Setup 1. Make sure the tightvnc-server package is installed on the remote machine. 2. Connect to the remote machine using ssh. 3. If it’s not already running, start the VNC server by executing vncserver in a console. If this is the first time vncserver is run on the system with that user account, then you have to enter the password clients will have to use to connect and confirm it. The system informs you which display number clients have to use. Run vncserver -kill ISPLAY_NUMBER when you no longer need the VNC server. Then connect as a client to control the remote machine (see Section 2.2, Controlling Computer Setup [343]). For the machine that will act as the controlled (server) computer, select the Allow control of my machine (linux server) option. Fill the Set Password field. This is mandatory or Rfbdrake will complain. Please bear in mind that this password is not related to the user’s local/remote account password in any way. Figure 24.1. Server Options

Chapter 24. Controlling a Remote Machine Being able to remotely control another machine offers many possibilities, from remote technical assistance to teaching how an application works. In this chapter we describe the configuration and usage of Rfbdrake, a tool to easily set up a virtual network computing environment under Mandriva Linux. 1. Concepts Here are a few concepts: Virtual Network Computing (VNC) An environment which allows you to interact with a remote computer as if you were sitting in front of that computer . The computers don’t have to be of the same type, nor do they have to be running the same OS: they only need a working TCP/IP network connection. Controlled Computer This is the computer to be controlled without the need, or the possibility, to be actually sitting at its console. It is remote from your location. Also called the server . Controlling Computer This is the computer in front of which you’re sitting, from where you interact with the controlled (remote) computer. Also called the viewer . 2. Installation and Setup Make sure the rfbdrake package is installed and then access Rfbdrake through the Mandriva Linux Control Center: an Online Administration section is accessible from which you can start the Remote Control of another machine 1 (Linux/Unix, Windows) utility. 2.1. Controlled Computer Setup In this section, we assume you can access Rfbdrake. If this is not the case (typically remote administration tasks), then you need to: You can also launch Rfbdrake by choosing Internet + Remote access . Virtual Network Connection in the main menu.

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Configure 3. Mandriva Online Applet Launch the wizard (see Section 1, Initial Configuration [331]). This can be useful to resend your machine configuration to the server, for example if you have upgraded your hardware. Check updates Manually connects to the server to check if updates are available. This is done periodically by the applet, but if you have no permanent connection to the Internet, it may be useful to manually check for updates when you are online.

3. Mandriva Online Applet A bugfix update is available for your installed packages. A security update is available for your installed packages. It is highly recommended that you install security updates. The applet is currently contacting the server, be patient. This host isn’t currently activated. Activate it using the Web interface (see Section 2.1, Subscribing New Machines [335]). The applet cannot connect to the server. Check your Internet connection. The system is currently not configured or a configuration error was found. Launch the configuration wizard (see Section 1, Initial Configuration [331]) to use Mandriva Online. Click on the applet icon to open a dialog with action buttons, followed by the current machine’s status. Figure 23.8. Mandriva Online Applet Install updates Manually launch the updates installer by opening Rpmdrake (see Section 3, Mandriva Linux Update [214]).

3. Mandriva Online Applet Figure 23.7. Select Packages to be Updated Click on the advisory link (of the MDKA-year:numberor MDKSA-year:number forms) to obtain details about that update. Check the box for each package you want to be updated on your machine. When this is done, click on Schedule Packages . Once updates are selected, they are automatically installed next time the applet connects to the Mandriva Online server, which occurs several times a day. 3. Mandriva Online Applet The applet resides on your desktop panel. It informs you about update availability and allows you to perform basic system maintenance tasks. The applet icon can be in one of many states, depending on your machine’s status: The system is up-to-date. All is fine. A standard program update is available for your installed packages.

2.3. Scheduling Updates Online Applet [337]) which regularly connects to the Internet to check for such updates. Check current packages Click on the See link by the Installed packages or Errata(s) label. 2.3. Scheduling Updates You can update your machine manually from the applet (see Section 3, Mandriva Online Applet [337]); from the Web interface, you can check which updates are available and choose which ones to install. Figure 23.6. Outdated Mandriva Online Host You must now select the packages to be updated. You can either schedule all packages to be updated , or choose them one by one by clicking on the See link in the Outdated packages field.

2.1. Subscribing New Machines 2.1. Subscribing New Machines Figure 23.4. Mandriva Online Hosts List 2.2. Host Management Once you activate a host you can access its management interface by clicking on the details icon. Figure 23.5. Up-To-Date Mandriva Online Host The available actions differ slightly according to whether your machine’s packages are up-to-date or not, but basically here are the actions you can perform: Control email alerts Change the mail-sending status to yes (by clicking on the link) to receive an email when updates are available. Control automatic scheduled updates Change the auto-update status to yes (by clicking on the link) to have updates for your machine automatically installed by the applet (see Section 3, Mandriva