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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 com‐
       mand-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 permis‐
       sions (read and write only by the owner.)  However,  when  accessing  a
       VNC  desktop, a challenge-response mechanism is used over the wire mak‐
       ing 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 and
       others.

       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 have since  par‐
       ticipated  in  development, testing and support. This manual is part of
       the TigerVNC software suite.

TigerVNC							  vncpasswd(1)

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