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Peter Åstrand4eacc022009-02-27 10:12:14 +00001.TH vncpasswd 1 "05 May 2006" "TigerVNC" "Virtual Network Computing"
Constantin Kaplinskyb30ae7f2006-05-25 05:04:46 +00002.SH NAME
3vncpasswd \- change a VNC password
4.SH SYNOPSIS
5.B vncpasswd
6.RI [ passwd-file ]
7.SH DESCRIPTION
8.B vncpasswd
9allows you to set the password used to access VNC desktops. It stores an
10obfuscated version of the password in the given file (default
11$HOME/.vnc/passwd). The \fBvncserver\fP script runs \fBvncpasswd\fP the first
12time you start a VNC desktop, and invokes \fBXvnc\fP with the appropriate
13\fB\-rfbauth\fP option. \fBvncviewer\fP can also be given a password file to
14use via the \fB\-passwd\fP option.
15
16The password must be at least six characters long, and only the first eight
17characters are significant. Note that the stored password is \fBnot\fP
18encrypted securely - anyone who has access to this file can trivially find out
19the plaintext password, so \fBvncpasswd\fP always sets appropriate permissions
20(read and write only by the owner). However, when accessing a VNC desktop a
21challenge-response mechanism is used over the wire making it hard for anyone to
22crack the password simply by snooping on the network.
23
24.SH FILES
25.TP
26$HOME/.vnc/passwd
27Default location of the VNC password file.
28
29.SH SEE ALSO
30.BR vncviewer (1),
31.BR vncserver (1),
32.BR Xvnc (1)
33.BR vncconfig (1),
34.br
Peter Åstrand4eacc022009-02-27 10:12:14 +000035http://www.tigervnc.org
Constantin Kaplinskyb30ae7f2006-05-25 05:04:46 +000036
37.SH AUTHOR
38Tristan Richardson, RealVNC Ltd.
39
40VNC was originally developed by the RealVNC team while at Olivetti
Constantin Kaplinskybe1bda82006-06-02 04:43:52 +000041Research Ltd / AT&T Laboratories Cambridge. TightVNC additions were
Constantin Kaplinskyb30ae7f2006-05-25 05:04:46 +000042implemented by Constantin Kaplinsky. Many other people participated in
43development, testing and support.