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If visual and interactive access to the system being installed is not available, then you should use Connect Mode.
Installing a VNC Viewer
Installing in VNC Connect Mode
Installing in VNC Direct Mode
Installing Using VNC
In this mode, [application]*Anaconda* is configured to start the installation and wait for an incoming connection from VNC viewer before proceeding. While waiting for an incoming connection, the system's IP address and the port on which the installer expects the connection is displayed on the display or console if available; this implies that you need at least a serial console to connect using this mode, but you can work around this limitation if you know the default VNC port and the system's IP address.
In this mode, the VNC viewer is started on the remote system in _listening mode_. The VNC viewer waits for an incoming connection on a specified port. Then, [application]*Anaconda* is started and the host name/IP address and port number of the viewer are provided using a boot option or a Kickstart command. When the installation begins, the installation program establishes a connection with the listening VNC viewer using the specified host name/IP address and port number. Connect mode is therefore easier to use on systems with no local display or console, but it also may require additional preparation, because the viewer system must be able to accept incoming connections on the specified port, which usually requires changing firewall settings.
Kickstart Considerations
Network Connection Rules and Firewalls
Note the IP address and port number (in the above example, `192.168.100.131:5901`).
On the system running the VNC Viewer, enter the IP address and port number obtained in the previous step into the `Connection Details` dialog in the same format as it was displayed on the screen by the installer. Then, click `Connect`. The VNC viewer will now connect to the installation system. If you set up a VNC password, enter it when prompted and press `OK`.
Open the VNC viewer (for example, [application]*TigerVNC*) on the workstation you will be using to connect to the system being installed. A window similar to xref:figu-vnc-installations-connection-details[TigerVNC Connection Details] will be displayed with an input field allowing you to specify an IP address.
Optionally, if you want to restrict VNC access to the installation system, add the [option]#inst.vncpassword=pass:attributes[{blank}]_PASSWORD_pass:attributes[{blank}]# boot option as well. Replace _PASSWORD_ with the password you want to use for the installation. The VNC password must be between 6 and 8 characters long.
[option]#inst.vnc inst.vncconnect=pass:attributes[{blank}]_HOST_:pass:attributes[{blank}]_PORT_#
Performing a VNC Installation
Performing a VNC installation requires a VNC viewer running on your workstation or another terminal computer. VNC viewers are available in the repositories of most Linux distributions; free VNC viewers are also available for other operating systems such as Windows. On Linux systems, use your package manager to search for a viewer for your distribution.
Procedures in this chapter assume you are using [application]*TigerVNC* as your VNC viewer. Specific instructions for other viewers may differ, but the general principles still apply.
Replace _HOST_ with the IP address of the system running the listening VNC viewer, and _PORT_ with the port number that the VNC viewer is listening on.
Replace _package_ with the package name of the viewer you want to use (for example, [package]*tigervnc*).
Replace _PORT_ with the port number you want to use for the connection.