Ubuntu Manpage: ssvnc - a GUI wrapper for SSL and SSH VNC connections.

NAME

       ssvnc - a GUI wrapper for SSL and SSH VNC connections.

SYNOPSIS

       ssvnc
       ssvnc [host][:display]
       ssvnc [saved-profile-name]
       ssvnc [options] [host-or-profile]
       ssvnc -cmd [ssvnc_cmd-args]
       ssvnc -viewer [viewer-args]
       ssvnc --help

DESCRIPTION

ssvnc is a tcl/tk gui wrapper that runs on Unix, MacOSX, and Windows. It sets up an SSL or SSH tunnel to
the remote VNC Server and then launches the VNC viewer (either the one provided or another one that you
have specified) to use that encrypted tunnel to connect to the VNC Server. The use of Proxies and
Gateways to make the connections is implemented.

Once you have started the SSVNC gui, you can click on the buttons "Help", "Options -> Help", "Certs ->
Help", etc. for much information on how to use and configure the tool.

In short, you supply a VNC server "hostname:display" in the "VNC Host:Display" entry box and then press
the "Connect" button to connect to the server via SSL (stunnel). E.g. "far-away.east:0". Port numbers
are also allowed, e.g. far-away.east:5905.

Or supply user@hostname:display and click on the "Use SSH" option, then press the "Connect" button to
connect to the server via an SSH tunnel. E.g. "fred@far-away.east:0".

Note it is also possible to disable the use of SSL/SSH encryption tunnels by using a vnc:// or Vnc://
prefix before host:display. Shift+Ctrl-E is a short-cut to add/remove it. See also the -noenc option
below for the 'No Encryption' button.

Normally you do not specify any command line options. You simply run ssvnc and use the GUI that starts
up.

However, as shortcuts you can supply a VNC host:display (or host:port) on the command line to connect to
immediately (the GUI is started and the connection is initiated). For example, "ssvnc far-away.east:0"
Instead of a host:display, you can specify the name of a saved profile to automatically load that
profile and then connect to its server. For example "ssvnc far", if you named the profile "far". You
can use the -profiles option to list the profiles you have saved.

The related commands sshvnc and tsvnc start up the GUI in simplified modes: SSH Only Mode, and Terminal
Services Mode, respectively. See below and the application Help for more information on the modes.

You can also place certain settings in your ~/.ssvncrc, see the SSVNC Help panel ('Tips') for more info.

The -cmd option does not start the GUI, it runs the command line utility ssvnc_cmd directly with the
given arguments. ssvnc_cmd can launch the viewer directly (-viewer ...) or, by default, the
ss_vncviewer SSL/SSH tunnel wrapper script. See its help output for more information.

There are also some command line options described as follows.

OPTIONS

-help, -h
Prints out to the terminal a brief description and the options.

--help Starts up the GUI as though the 'Help' button was pressed to show the main Help panel.

-cmd [ssvnc_cmd-args]
Launch the ssvnc_cmd utility command directly (no GUI) with the given arguments (for use when
ssvnc_cmd is not in one's PATH.) If neither ssvnc_cmd nor ssvncviewer is in PATH, one can launch
the viewer directly via: ssvnc -cmd -viewer [viewer-args] See the next option -viewer for an
alias.

-viewer [viewer-args]
Shorthand for ssvnc -cmd -viewer [viewer-args].

-profiles
List the saved SSVNC profiles you have created. A profile is a destination host with specific
parameter settings.

-list Same as -profiles

-ssh Start in "SSH Only Mode". No SSL aspects are shown. Same as running the command sshvnc

-ts Start in "Terminal Services Mode". This is like "SSH Only Mode", but simpler and assumes x11vnc
is available on the remote side to start and manage X and VNC sessions. Same as running the
command tsvnc

-tso Same as -ts "Terminal Services Mode", however never let the user leave this mode (no button to
switch modes is provided.) Same as SSVNC_TS_ALWAYS=1.

-ssl Force the full GUI Mode: both SSL and SSH. This is the default. Same as -ss.

-nv Toggle the "Verify All Certs" button to be off at startup.

-nvb Never show the "Verify All Certs" button. Same as SSVNC_NO_VERIFY_ALL_BUTTON=1.

-bigger
Make the Profile Selection Dialog window bigger. Same as SSVNC_BIGGER_DIALOG=1.

-noenc Start off in a mode where a 'No Encryption' check button is present. You can toggle the mode with
Ctrl-E. Same as SSVNC_DISABLE_ENCRYPTION_BUTTON=1. Or noenc=1 in ~/.ssvncrc. Selecting no
encryption is the same as the vnc:// and Vnc:// prefixes described below. The -noenc mode is now
the default, use -enc or noenc=0 for the opposite behavior.

-killstunnel
On Windows, automatically terminate the STUNNEL process when the viewer exits instead of prompting
you (same as killstunnel=1 in ssvnc_rc or toggle in Options menu)

-nokillstunnel
On Windows, disable -killstunnel mode. Same as killstunnel=0 in ssvnc_rc or toggle in Options
menu. Note that -killstunnel mode is now the default.

-mycert /path/to/mycert.pem
Set the default "MyCert" to be /path/to/mycert.pem. Same as -cert. If the file does not exist,
~/.vnc/certs is prefixed and tried. You can also set mycert=/path/to/mycert.pem in ~/.ssvncrc.

-cacert /path/to/cacert.crt
Set the default "ServerCert" to be /path/to/cacert.crt. Same as -ca. If the file does not exist,
~/.vnc/certs is prefixed and tried. You can also set cacert=/path/to/cacert.crt in ~/.ssvncrc.

-crl /path/to/mycrl.pem
Set the default Certificate Revocation List to be /path/to/mycrl.pem. If the file does not exist,
~/.vnc/certs is prefixed and tried. You can also set crl=/path/to/mycrl.pem in ~/.ssvncrc.

URL NOTATION

       Here are all of our URL-like prefixes that you can put in front of host:display (or host:port):

       For SSL:  vncs:// vncssl:// and vnc+ssl://

       For SSH:  vncssh:// and vnc+ssh://

       For No Encryption:  vnc:// and Vnc://

       Examples:

       To quickly make an SSL connection: ssvnc vncs://snoopy.com:0

       To quickly make an SSH connection: ssvnc vnc+ssh://fred@snoopy.com:0

       To quickly make a direct connection: ssvnc Vnc://snoopy.com:0

       The  above  will  also  work  in the "VNC Host:Display" entry box in the GUI.  Press the "Connect" button
       after entering them.

       The difference between vnc:// and Vnc:// is that the latter one will not prompt you  whether  you  really
       want to make an unencrypted connection or not.

FILES

       Your SSVNC vnc profiles are stored in the $HOME/.vnc/profiles directory.  They end in suffix .vnc

       Your SSVNC vnc certificates and keys are stored in the $HOME/.vnc/certs directory.  They typically end in
       .pem (both certificate and private key) or .crt (certificate only).

       You can put a few global parameters (e.g. mode=sshvnc) in your $HOME/.ssvncrc file (ssvnc_rc on Windows);
       see the application Help for more information.

FONTS

       The following is from Tip 18 in the Help panel.

       Fonts:   To   change   the   tk  fonts,  set  these  environment  variables  before  starting  up  ssvnc:
       SSVNC_FONT_DEFAULT and SSVNC_FONT_FIXED.  For example:

       % env SSVNC_FONT_DEFAULT='helvetica -20 bold' ssvnc

       % env SSVNC_FONT_FIXED='courier -14' ssvnc

       or set both of them at once.

       To achieve the same effect, you can also set parameters in your ~/.ssvncrc file, for example:

       font_default=helvetica -20 bold

       font_fixed=courier -14

AUTHORS

       Karl  J.  Runge  <runge@karlrunge.com>  wrote  the SSVNC gui (tcl/tk) and associated wrapper scripts, and
       added features to the unix vncviewer source code.

                                                  January 2011                                          ssvnc(1)