On Mon, 4 May 2009, William Shu wrote:
Thank you very much Miles!
I rebooted both machines and I can now view pdf/ *.ps files without complaints!
vncviewer now opens on the host machine when invoked from the remote
machine through ssh. However, I have the following three problems (whose
solutions I guess will help end this thread):
1) Everything has suddenly become so slow on the host machine (I think);
shortly after opening the vnc window seems to freeze, not displaying X
clients, though the window itself can be reduced or expanded!
Sorry, no idea there.
2) Trying to open vnc without ssh complains of no route to host (error
113). Also, xclock complains of inability to open display.
This is probably your firewall preventing access as I mentinoed. Looking
at it I think you need to open 5901 on your server. I've never used though
so I'm not sure.
3) Related to (2) above, it seems I can only project X disply on another
terminal through ssh, which requires login (and hence knowing another
user's password). Is there no other secure way of doing this, where the
target user can selectively authorise the display?
Each user could have an account on the host machine that is different.
They'd all need to know the shared password for the VNC server though.
Probably not a good idea.
You can use xauth as described before to allow a user to do everything
with your X session either via an ssh tunnel or directly if you open port
6000 (assuming your display is :0) on your firewall. However, something
like EVO would be a much safer way to share a desktop window. There are
probably other applications that would do it too.
The following outputs show what transpired:
[...@hpsl5 ~]$ ssh -XY [email protected]
[email protected]'s password:
Last login: Tue May 5 02:57:19 2009
[...@inteksl52 ~]$ echo $DISPLAY
localhost:10.0
[1]+ Done evince Desktop/semanticKnowledge-a4-geissler.pdf
[...@inteksl52 ~]$ vncviewer &
[1] 6612
[...@inteksl52 ~]$
VNC Viewer Free Edition 4.1.2 for X - built Feb 11 2009 12:55:24
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.
Tue May 5 03:08:35 2009
CConn: connected to host localhost port 5901
CConnection: Server supports RFB protocol version 3.8
CConnection: Using RFB protocol version 3.8
Tue May 5 03:08:54 2009
TXImage: Using default colormap and visual, TrueColor, depth 24.
CConn: Using pixel format depth 6 (8bpp) rgb222
CConn: Using ZRLE encoding
Tue May 5 03:18:27 2009
main: End of stream
[1]+ Done vncviewer
[...@inteksl52 ~]$
<... snip ...>
[...@hpsl5 ~]$ vncviewer 192.168.10.20:1 &
[1] 3888
[...@hpsl5 ~]$
VNC Viewer Free Edition 4.1.2 for X - built Feb 11 2009 12:55:24
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.
Tue May 5 03:38:32 2009
main: unable to connect to host: No route to host (113)
[1]+ Exit 1 vncviewer 192.168.10.20:1
[...@hpsl5 ~]$
[...@hpsl5 ~]$ xclock -display 192.168.10.20:1 &
[1] 5564
[...@hpsl5 ~]$ Error: Can't open display: 192.168.10.20:1
--- On Tue, 5/5/09, Miles O'Neal <[email protected]> wrote:
From: Miles O'Neal <[email protected]>
Subject: Re: Problems using X Windows Display
To: [email protected]
Date: Tuesday, May 5, 2009, 1:02 AM
William Shu said...
|Xforwarding:
|------------
|Changed the Xforwarding to yes in /etc/ssh/sshd_config of remote mach=
|ine (inteksl52):
|
|#X11Forwarding no
|X11Forwarding yes
Did you restart the ssh daemon after that change?
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|http://cern.ch/gowdy/ | CH-1211 Geneva 23 |
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