BullDog Notes

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this page is junk, but useful for me for now

=================al servers ========================

VNC/Servers - Community Help Wiki 

   *>url  https://help.ubuntu.com/community/VNC/Servers


============== vino ============================

vino - Enable remote VNC from the commandline? - Ask Ubuntu 

   *>url  https://askubuntu.com/questions/4474/enable-remote-vnc-from-the-commandline



Just running

/usr/lib/vino/vino-server should do the job.

Once you have access to your server, I would recommend that you add it to Autostarted Apps so it is always started.

You'll probably like change some settings with :

vino-preferences be very careful when you run vino-preference on a remote machine, if you uncheck "Allow other users to control your desktop", you won't be able to check it back.

or to edit :

~/.gconf/desktop/gnome/remote_access/%gconf.xml Here a sample file :

<?xml version="1.0"?> <gconf> 

   <entry name="vnc_password" mtime="1289267042" type="string">
       <stringvalue>cXdlcnR5</stringvalue>
   </entry>
   <entry name="view_only" mtime="1289262982" type="bool" value="false"/>
   <entry name="prompt_enabled" mtime="1254965869" type="bool" value="false"/>
   <entry name="authentication_methods" mtime="1289267034" type="list" ltype="string">
  • <stringvalue>vnc</stringvalue>

    • </entry> <entry name="enabled" mtime="128926

    ====================== x11vnc =============

    Just a few scribbled links


    VNC SSH


    misc vnc notes

    Goal

    I would like to use VNC to access a Ubuntu 18.04 system from windows like I do with the Raspberry Pi.

    • Connect to the existing desktop
    • Keep the connection secure

    This has been a bit of a struggle for a number of gotchas.

    Overview

    As I understand it ( may not have figured it out all the way )

    • VNC has a server ( run on the machine you wish to view ) and viewer ( run on the machine you wish to access).
    • In addition to having several components there are many versions of VNC. Directions for each differ, and differ across versions of Linux.
    • I will focus on Tiger VNC and Ubuntu 18.04
    • To get VNC working there seem to be various components.
      • VNC server
      • Desktop software ( there are many different ones, you may need to install -- however here I want to run on the default Ubuntu 18.04 desktop so no install is necessary )
      • A way to connect to the VNC server -- many servers will only connect to localhost 127.0.0.1 so we will use vnc tunnelling to make a remote connection appear to be on localhost


    Other Software Used

    before installs

    • sudo apt update
    • sudo apt upgrade


    Process viewer (htop)

    • Why This will let you see what vnc software is running.
    • Install >> sudo apt -install htop
    • Run >> htop
    • Exit >> ctrl-c

    IfConfig

    • Why see your server's tcp ip address
    • Install >> sudo apt -install ??
    • Run >> ifconfig
    • Exit >> just ends

    SSH

    • Install >> sudo apt install openssh-server

    what

    might this help gconf-editor

    Ubuntu text editor ( gedit )

    • Install >> apt-get -install ??
    • Run >> htop

    Ubuntu File Browser

    Tiger VNC

    • Note: there may already be vncserver software installed perhaps vineo ??
    • Install >> sudo apt-get install tigervnc-scraping-server
    • Install ( may not be needed ) >> sudo apt install tigervnc-standalone-server tigervnc-viewer
    • Set password >>vncpasswd << gotcha, if run server with no password set. If this does not run find an install -- perhaps full tiger vnc to get it.
    • Run gotcha >> x0tigervncserver << but gotcha, needs to be pointed to password file so
    • Run >> x0tigervncserver -PasswordFile ~/.vnc/passwd
    • Run gotcha this is not the scraping server may not be installed >> tigervncserver -xstartup /usr/bin/xterm
    • Set password >>vncpasswd << gotcha, if run server with no password set it will not work.
    • edit configuration file >> use file browser but .vnc is hidden so turn on hidden file abillity ( one of its menus )
      • sudo apt-get install git psmisc
    • set password with >> vncpasswd
    • see running servers >> vncserver -list
    • what runs with command vncserver >> which vncserver
        right answer is ??

    /usr/bin/vncserver


    PuTTY X11 proxy: Unsupported authorisation protocol

    How to start a vnc server for the actual display (scraping) with TigerVNC https://www.howtoforge.com/tutorial/how-to-start-a-vnc-server-for-the-actual-display-scraping-with-tigervnc/


    Webmin

    • rather than use the desktop use a web based admin tool:


    Webmin http://www.webmin.com/

    3

    no keyboard untill 1 - > 4 gig memory still running slugish??


    spyder


    tiger vnc

    sudo apt install tigervnc-standalone-server tigervnc-viewer


    start in terminal with

    vncserver

    vncviewer

    russ@UbuntuBase-VB:~$ vncserver

    New 'UbuntuBase-VB:1 (russ)' desktop at :1 on machine UbuntuBase-VB

    Starting applications specified in /etc/X11/Xvnc-session Log file is /home/russ/.vnc/UbuntuBase-VB:1.log

    Use xtigervncviewer -SecurityTypes VncAuth -passwd /home/russ/.vnc/passwd :1 to connect to the VNC server.

    russ@UbuntuBase-VB:~$ vncserver

    loopback IP address is 127.0.0.1


    not done yet ------


    Start TigerVNC vncserver at boot

    The ubuntu install package also registers a system service, making it easy to define listening vnc servers on startup. Edit the file /etc/default/vncserver and add the display number and user to start as:

    sudo gedit /etc/default/vncserver

    VNCSERVERS="1:myusername"

    Then enable the service at boot with:

    sudo update-rc.d vncserver defaults

    end not done

    vncserver in terminal to start

    Use xtigervncviewer -SecurityTypes VncAuth -passwd /home/russ/.vnc/passwd :1 to connect to the VNC server.


    more installs --------------------

    remmina


    sudo apt install openssh-server

    done ------------------


    https://linuxize.com/post/how-to-install-webmin-on-ubuntu-18-04/


    sudo apt install software-properties-common apt-transport-https wget

    sudo add-apt-repository "deb [arch=amd64] http://download.webmin.com/download/repository sarge contrib"

    etting up libauthen-pam-perl (0.16-3build5) ... Setting up apt-show-versions (0.22.7ubuntu1) ...

      • initializing cache. This may take a while **

    Processing triggers for ureadahead (0.100.0-21) ... Setting up webmin (1.910) ... Webmin install complete. You can now login to https://UbuntuBase-VB:10000/ as root with your root password, or as any user who can use sudo to run commands as root. Processing triggers for systemd (237-3ubuntu10.21) ... Processing triggers for man-db (2.8.3-2ubuntu0.1) ... Processing triggers for ureadahead (0.100.0-21) ... russ@UbuntuBase-VB:~$

    what is running tiger?? ----------------

    sudo apt-get install htop htop


    start with

    tigervncserver -xstartup /usr/bin/xterm


    remania connccts ok with 127.0.0.1:5904 password password


    590 desktop number may get the desktop number whhen start tigervnc with the command

    vncserver ??


    how do I know so little

    see what is going on with htop 

       vncserver -kill :1

    vnc viewerr is also installed


    this seems pretty good

    How to remotely display and control a Linux desktop from a Windows or Linux system using VNC https://www.linuxtopia.org/HowToGuides/VNC_setup_Linux_Windows.html


    ls ~ -a to see home hidden files there is a .vnc


    sudo gedit ~/.vnc/default.tigervnc

    How to list VNC server sessions on Ubuntu Linux $ vncserver -list

    ifconfig -a. ip addr (ip a)



    sudo apt-get install openssh-server

    Input your password (no visual feedback while typing) when it prompts and hit Enter.

    openssh-server-bionic

    3. Once installed, SSH starts automatically in background. And you can check its status via command:

    sudo systemctl status ssh.service


    x0tigervncserver Ubuntu Manpage: x0tigervncserver - TigerVNC Server for X displays http://manpages.ubuntu.com/manpages/bionic/man1/x0tigervncserver.1.html

    x0tigervncserver -PasswordFile ~/.vnc/default.tigervnc


    gedit ~/.vnc/default.tigervnc

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