1vncpasswd(1) Virtual Network Computing vncpasswd(1)
2
6 vncpasswd - change the VNC password
7
9 vncpasswd [passwd-file]
10 vncpasswd -f
11
13 vncpasswd allows you to set the password used to access VNC desktops.
14 Its default behavior is to prompt for a VNC password and then store an
15 obfuscated version of this password to passwd-file (or to
16 $HOME/.vnc/passwd if no password file is specified.) The vncserver
17 script runs vncpasswd the first time you start a VNC desktop, and it
18 invokes Xvnc with the appropriate -rfbauth option. vncviewer can also
19 be given a password file to use via the -passwd option.
20 The password must be at least six characters long (unless the -f com‐
22 mand-line option is used-- see below), and only the first eight charac‐
23 ters are significant. Note that the stored password is not encrypted
24 securely - anyone who has access to this file can trivially find out
25 the plain-text password, so vncpasswd always sets appropriate permis‐
26 sions (read and write only by the owner.) However, when accessing a
27 VNC desktop, a challenge-response mechanism is used over the wire mak‐
28 ing it hard for anyone to crack the password simply by snooping on the
29 network.
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33 -f Filter mode. Read a plain-text password from stdin and write an
34 encrypted version to stdout. Note that in filter mode, short or
35 even empty passwords will be silently accepted.
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40 $HOME/.vnc/passwd
41 Default location of the VNC password file.
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45 vncviewer(1), vncserver(1), Xvnc(1) vncconfig(1),
46 http://www.tigervnc.org
47
50 Tristan Richardson, RealVNC Ltd.
51 Antoine Martin
52 D. R. Commander
53 VNC was originally developed by the RealVNC team while at Olivetti
55 Research Ltd / AT&T Laboratories Cambridge. TightVNC additions were
56 implemented by Constantin Kaplinsky. Many other people participated in
57 development, testing and support.
58TigerVNC 09 Jul 2010 vncpasswd(1)