vncpasswd
(1)
名前
vncpasswd - change the VNC password
形式
/usr/bin/vncpasswd [passwd-file]
vncpasswd -f
説明
Virtual Network Computing vncpasswd(1)
NAME
vncpasswd - change the VNC password
SYNOPSIS
/usr/bin/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 pass-
word 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 command-line option is used-- see below), 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 plain-text
password, so vncpasswd always sets appropriate permissions
(read and write only by the owner.) However, when accessing
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.
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
TigerVNC Last change: 09 Jul 2010 1
Virtual Network Computing vncpasswd(1)
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 participated in development, testing and
support.
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |x11/server/xvnc |
+-----------------------------+-----------------------------+
|Interface Stability |Volatile |
+-----------------------------+-----------------------------+
TigerVNC Last change: 09 Jul 2010 2