vncpasswd - change the VNC password
vncpasswd [passwd-file] vncpasswd -f
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.
A view-only password must be separated from the normal password
by a newline character.
FILES
$HOME/.vnc/passwd
Default location of the VNC password file.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | x11/server/xvnc |
+---------------+------------------+
|Stability | Volatile |
+---------------+------------------+
SEE ALSO
vncviewer(1), vncserver(1), Xvnc(1) vncconfig(1),
https://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.
NOTES
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from https://github.com/TigerVNC/tigervnc/ar-
chive/v1.10.1.tar.gz.
Further information about this software can be found on the open source
community website at http://tigervnc.org/.
TigerVNC vncpasswd(1)