vncpasswd



vncpasswd(1)               Virtual Network Computing              vncpasswd(1)




NAME

       vncpasswd - change a VNC password


SYNOPSIS

       vncpasswd [passwd-file]


DESCRIPTION

       vncpasswd  allows  you to set the password used to access VNC desktops.
       It stores an obfuscated version of  the  password  in  the  given  file
       (default  $HOME/.vnc/passwd).   The vncserver script runs vncpasswd the
       first time you start a VNC desktop, and invokes Xvnc with the appropri-
       ate  -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, and only  the  first
       eight characters are significant.  Note that the stored password is not
       encrypted securely - anyone who has access to this file  can  trivially
       find  out  the plaintext password, so vncpasswd always sets appropriate
       permissions (read and write only by the owner).  However, when  access-
       ing  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.



FILES

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



SEE ALSO

       vncviewer(1), vncserver(1), Xvnc(1) vncconfig(1),
       http://www.realvnc.com



AUTHOR

       Tristan Richardson, RealVNC Ltd.

       VNC  was  originally  developed  by  the RealVNC team while at Olivetti
       Research Ltd / AT&T Laboratories Cambridge.  It is now being maintained
       by RealVNC Ltd.  See http://www.realvnc.com for details.



RealVNC Ltd                       03 Mar 2005                     vncpasswd(1)

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