tigervncpasswd(1) Virtual Network Computing tigervncpasswd(1)
NAME
tigervncpasswd - change the VNC password
SYNOPSIS
tigervncpasswd [passwd-file]
tigervncpasswd -f
DESCRIPTION
tigervncpasswd allows you to set the password used to access VNC desk-
tops. 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 tigervnc-
server script runs tigervncpasswd the first time you start a VNC desk-
top, and it invokes Xtigervnc with the appropriate -rfbauth option.
xtigervncviewer 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 tigervncpasswd always sets appropriate per-
missions (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.
SEE ALSO
xtigervncviewer(1), Xtigervnc(1) tigervncconfig(1), tigervncsession(8)
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 Re-
search Ltd / AT&T Laboratories Cambridge. TightVNC additions were im-
plemented by Constantin Kaplinsky. Many other people have since partic-
ipated in development, testing and support. This manual is part of the
TigerVNC software suite.
TigerVNC tigervncpasswd(1)
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