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60 lines
2.1 KiB
Groff
60 lines
2.1 KiB
Groff
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.TH vncpasswd 1 "" "KasmVNC" "Virtual Network Computing"
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.SH NAME
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vncpasswd \- change the VNC password
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.SH SYNOPSIS
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\fBvncpasswd\fR [\fIpasswd-file\fR]
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.br
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\fBvncpasswd\fR \-f
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.SH DESCRIPTION
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.B vncpasswd
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allows you to set the password used to access VNC desktops. Its default
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behavior is to prompt for a VNC password and then store an obfuscated version
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of this password to \fIpasswd-file\fR (or to $HOME/.vnc/passwd if no password
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file is specified.) The \fBvncserver\fP script runs \fBvncpasswd\fP the first
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time you start a VNC desktop, and it invokes \fBXvnc\fP with the appropriate
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\fB\-rfbauth\fP option. \fBvncviewer\fP can also be given a password file to
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use via the \fB\-passwd\fP option.
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The password must be at least six characters long (unless the \fB\-f\fR
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command-line option is used-- see below), and only the first eight
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characters are significant. Note that the stored password is \fBnot\fP
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encrypted securely - anyone who has access to this file can trivially find out
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the plain-text password, so \fBvncpasswd\fP always sets appropriate permissions
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(read and write only by the owner.) However, when accessing a VNC desktop, a
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challenge-response mechanism is used over the wire making it hard for anyone to
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crack the password simply by snooping on the network.
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.SH OPTIONS
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.TP
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.B \-f
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Filter mode. Read a plain-text password from stdin and write an encrypted
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version to stdout. Note that in filter mode, short or even empty passwords
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will be silently accepted.
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A view-only password must be separated from the normal password by a newline
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character.
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.SH FILES
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.TP
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$HOME/.vnc/passwd
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Default location of the VNC password file.
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.SH SEE ALSO
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.BR vncviewer (1),
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.BR vncserver (1),
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.BR Xvnc (1)
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.BR vncconfig (1),
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.br
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http://kasmweb.com
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.SH AUTHORS
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Tristan Richardson, RealVNC Ltd., Antoine Martin, D. R. Commander and others.
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VNC was originally developed by the RealVNC team while at Olivetti
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Research Ltd / AT&T Laboratories Cambridge. TightVNC additions were
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implemented by Constantin Kaplinsky. Many other people have since
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participated in development, testing and support. This manual is part
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of the KasmVNC software suite.
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