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== Requirements for Remotely Displaying Applications ==
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In order to run an application on one Linux system, and have it display on another system there are a couple of pre-requisitesprerequisites. Firstly, the system on which the application is to be displayed must be running an X server. If the system is a UNIX or Linux based system with a desktop running then this is no problem. If the system is running Windows, however, then you must install an X server on it before you can display applications from a remote system. A number of commercial and free Windows based X servers are available for this purpose and a web search should provide you with a list of options.
Secondly, the system on which the application is being run (as opposed to the system which the application is to be displayed) must be configured to allow SSH access. Details on configuring SSH on an a Fedora Linux system can be found in the chapter entitled [[Configuring Fedora Linux Remote Access using SSH]]. Finally, SSH must be configured to allow X11 Forwarding. To verify this , load the /etc/ssh/ssh_config file into an editor and make sure that the following directive is set:
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== Remotely Displaying a Fedora Linux Application ==
The first step in remotely displaying an application is to move to the system where the application is to be displayed. At this system, ssh into into the remote system so that you have a command prompt. This can be achieved using the ssh command. When using the ssh command we need to use the -X flag to tell ssh that we plan to tunnel X traffic through the tunnelconnection:
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where In the above example ''username'' is the user name to use to log into the remote system and ''hostname'' is the hostname or IP address of the remote system. Enter your password at the login prompt. Once logged it run the following command to see the ''DISPLAY'' setting:
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