vncpasswd(1) Virtual Network Computing vncpasswd(1)NAMEvncpasswd - change the VNC password
SYNOPSISvncpasswd [passwd-file]
vncpasswd-f
DESCRIPTIONvncpasswd 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.
FILES
$HOME/.vnc/passwd
Default location of the VNC password file.
SEE ALSOvncviewer(1), vncserver(1), Xvnc(1)vncconfig(1),
http://www.tigervnc.org
AUTHORS
Tristan Richardson, RealVNC Ltd.
Antoine Martin
D. R. Commander
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.
TigerVNC 09 Jul 2010 vncpasswd(1)
