vncpasswd(1) Virtual Network Computing vncpasswd(1)
vncpasswd - change a VNC password
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
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 http://www.realvnc.com for details.
RealVNC Ltd 03 Mar 2005 vncpasswd(1)
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