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{{MessageBox|backgroundcolor =#FBB|image = Using Warning.png|heading =WARNING|message = '''NOTE:''' This is for Fedora-based systems ONLY.<br />Guidance may not work for Amahi 7 or greater. Sorry, but if you break your HDA we cannot provide support}}{{NeedsUpdate}} ---- <div style="border: 1px solid #A3B1BF; padding: .8em 1em; background-color: #E6F2FF; margin: 0px 1em;">'''NOTE:''' The one-click [https://www.amahi.org/apps/vnc VNC to use App] has been discontinued for Amahi 7 or greater. The reason is that it pulls a remote lot of packages, including desktop and that breaks DNS in the HDA Fedora.</div><br /> :'''NOTE:''' See [[TigerVNC]] for Amahi 8/9 (Fedora 1221/23) guidance.__TOC__ =VNC remote =
Using [http://realvnc.com/ VNC] is useful if:
* You would like to use a GUI to configure printer(s) or have a scanner or other device that requires a desktop program to configure and the machine is headless
* A server
* A client
Download the client software and install:
* Windows: [http://realvnc.comRealVNC], [http://www.uvnc.com UltraVNC], [http:// For Windowswww.tightvnc.com TightVNC]* MAC: [http://sourceforge.net/projects/chicken/ Chicken], [http://cotvnc.sourceforge.net/ For MACChicken of the VNC](do not use internal vnc client as there are some issues)* For Linux, you have the vncviewer package, available in most, if not all distros. For Fedora 12, do the following as "[[Open_Terminal_as_root|'''root: ''']] user: yum -y install tigervnc = Server Installation = There are various ways to get the server going in your HDA. All of them require the server software.# Amahi [http://www.amahi.org/apps/VNC VNC] application.# Manually as described below (notes may require some revision). === Manual Install ===* Complete the steps in [[GUI_Install_for_Express_Disc|Express Disc Desktop]] guidance (Amahi 7 ONLY). * As root, install the server:
== Method 1 ==* To start Open a terminal, become root and install the VNC server (tigervnc-server ) as stated in the Manual Install section. When the install has completed, press ctrl-D to end the root session. Leave the terminal open, or open one now. *The following commands are entered as '''User'''. * Type vncpasswd and press enter. The system will prompt you for a password. Type a password and press the enter key. The system will prompt you to verify the password. Type the password a second time and press the enter key. * Type vncserver and press the enter key. The system will create the configuration files. You should see output similar to this: xauth: creating new authority file /home/user/.xauthority New 'host.localdomain:1 (user)' desktop is host.localdomain:1 Creating default startup script /home/user/.vnc/xstartup Starting applications specified in /home/user/.xauthority Log file is /home/user/.vnc/host.localdomain:1.log * You can edit the configuration files using your HDAchoice of editor. Nano is used below. Note that when "user" is shown, you need install tigervncto enter your user name. * Type nano /home/user/.vnc/xstartup and press the enter key. Nano will open the file. Find the following line: twm & Change that line to read: exec gnome-session & This change will open the VNC display with a Gnome desktop, even if the server rpm packageis starting in Init 3 by default. Press ctrl-X to exit Nano. You will see the prompt at the bottom "Save modified buffer (ANSWERING "No" WILL DESTROY CHANGES) ? Press the Y key. The prompt will change, showing you the file name. Press the enter key, this will store your change and exit Nano. *The following commands are entered as '''Root'''. * Type su and press the enter key followed by the root password You can edit the configuration files using your choice of editor. Nano is used below.Note that when "username" is shown, you need to enter your user name. * Type nano /etc/sysconfig/vncservers and press the enter key. Nano will open the file. Find the following lines: '#' VNCSERVERS="1:username" '#' VNCSERVERARGS[1]="-geometry 800x600 -nolisten tcp -localhost"
* From Uncomment both lines by removing the '''root''' user# at the beginning of the lines. Edit the lines so they appear as follows: yum VNCSERVERS="1:username" VNCSERVERARGS[1]="-geometry 1024x768 -y install tigervncnolisten tcp" Enter your username in place of "username". After "geometry", you can enter any resolution you desire. You can come back and change this if necessary. Press ctrl-server xinetdX to exit Nano. You will see the prompt at the bottom "Save modified buffer (ANSWERING "No" WILL DESTROY CHANGES) ? chkconfig vncserver off Press the Y key. The prompt will change, showing you the file name. service vncserver stop Press the enter key, this will store your change and exit Nano.
* Create /etc/gdm/customFinally, type chkconfig vncserver on and press the enter key.conf file and add This will make the VNC server start when the following: #GDM configuration storage [xdmcp] Enable=true [chooser] [security] DisallowTCP=false [debug]computer starts.
* Create /etc/xinetd.d/vnc1024 file Press ctrl-D to end the root session, and add then press ctrl-D again to close the following (you can change the screen resolution by changing the geometry setting): service vnc1024 { disable = no socket_type = stream protocol = tcp group = tty wait = no user = nobody server = /usr/bin/Xvnc server_args = -inetd -query localhost -geometry 1024×768 -depth 16 -once -fp /usr/share /X11/fonts/misc -securitytypes=none }terminal.
* Edit /etc/services That's it - Run your VNC Client and comment out enter hda:1 as the two lines that start out with:host/IP address. You should now see your HDA Desktop screen. vnc-server*If you are interested in more security for your VNC connection, check the link listed below under "General Instructions"
* Add this line below Repeat the ones configuration for each user you just commented out:wish to be able to connect via VNC. vnc1024 5900/tcp # * Note you can have displays for users 1-9 and each will connect to their VNC session at port 590n (some VNC clients 'know' the 590 part and GDMonly have you enter n). Make certain that you have forwarded the correct port(s), or the range 5901 through 5909.* Add -localhost to options if you are connecting through a ssh tunnel or only locally. This adds some security.
== Method 2 ==
* To start the server in your HDA, you need install tigervnc-server rpm package:
* From the '''root''' user:
yum -y install xinetd
chkconfig vncserver off
service vncserver stop
* Create /etc/gdm/custom.conf file and add the following:
#GDM configuration storage
[xdmcp]
Enable=true
[chooser]
[security]
DisallowTCP=false
[debug]
* Create /etc/xinetd.d/vnc1024 file and add the following (you can change the screen resolution by changing the geometry setting):
service vnc1024
{
disable = no
socket_type = stream
protocol = tcp
group = tty
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = -inetd -query localhost -geometry 1024×768 -depth 16 -once -fp /usr/share/X11/fonts/misc -securitytypes=none
}
* Edit /etc/services and comment out the two lines as listed below:
#vnc-server 5900/tcp # VNC Server
#vnc-server 5900/udp # VNC Server
* Add this line below the two lines you commented out and save the changes:
vnc1024 5900/tcp # VNC and GDM
* Now restart the xinetd service
* Why that resolution? That fits my monitors with the VNC window and frame enough to not display scrollbars and move around nicely. Change at will!
* It does involve the dreaded CLI.
* Since my HDA does not get rebooted often, this is not a huge problem
This helpful page has helped with [http://www.windowsreference.com/internet-explorer/windows-has-blocked-this-software-because-it-cant-verify-the-publisher/ blocking VNC]
