vncpasswd(1)               Virtual Network Computing              vncpasswd(1)


       vncpasswd - change a VNC password


       vncpasswd [passwd-file]


       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.


              Default location of the VNC password file.


       vncviewer(1), vncserver(1), Xvnc(1) vncconfig(1),


       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 for details.

RealVNC Ltd                       03 Mar 2005                     vncpasswd(1)

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