vncpasswd(1)						     Virtual Network Computing						      vncpasswd(1)

NAME

       vncpasswd - change the VNC password

SYNOPSIS

       vncpasswd [passwd-file]
       vncpasswd -f

DESCRIPTION

       vncpasswd  allows you to set the password used to access VNC desktops.  Its default behavior is to prompt for a VNC password and then store
       an obfuscated version of this password to passwd-file (or to $HOME/.vnc/passwd if no password file is  specified.)   The  vncserver  script
       runs  vncpasswd	the  first  time you start a VNC desktop, and it invokes Xvnc with the appropriate -rfbauth option.  vncviewer can also be
       given a password file to use via the -passwd option.

       The password must be at least six characters long (unless the -f command-line option is used-- see below), and only the first eight charac-
       ters  are significant.  Note that the stored password is not encrypted securely - anyone who has access to this file can trivially find out
       the plain-text password, so vncpasswd always sets appropriate permissions (read and write only by the owner.)  However,	when  accessing  a
       VNC desktop, a challenge-response mechanism is used over the wire making it hard for anyone to crack the password simply by snooping on the
       network.

OPTIONS

       -f     Filter mode.  Read a plain-text password from stdin and write an encrypted version to stdout.  Note that in filter  mode,  short	or
	      even empty passwords will be silently accepted.

FILES

       $HOME/.vnc/passwd
	      Default location of the VNC password file.

SEE ALSO

       vncviewer(1), vncserver(1), Xvnc(1) vncconfig(1),
       http://www.tigervnc.org

AUTHORS

       Tristan Richardson, RealVNC Ltd.
       Antoine Martin
       D. R. Commander

       VNC  was  originally  developed	by the RealVNC team while at Olivetti Research Ltd / AT&T Laboratories Cambridge.  TightVNC additions were
       implemented by Constantin Kaplinsky. Many other people participated in development, testing and support.

TigerVNC							    09 Jul 2010 						      vncpasswd(1)