Re: How to run _X_ Session from RH8 via ssh -X?
But now I just realized the obvious: Only X GUIS work and not windows. Is this correct? Yes! I assume I can tunnel rdesktop the same way I tunnel vnc? I guess I'll try tunneling both vnc and rdesktop next. I've heard this works, but have not tried personally. If you get this working, can you post your ssh command with the port(s) you needed to forward? Brett -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: How to run _X_ Session from RH8 via ssh -X?
Brett Serkez wrote: But now I just realized the obvious: Only X GUIS work and not windows. Is this correct? Yes! I assume I can tunnel rdesktop the same way I tunnel vnc? I guess I'll try tunneling both vnc and rdesktop next. I've heard this works, but have not tried personally. If you get this working, can you post your ssh command with the port(s) you needed to forward? I used to use the following all the time to access my Windows machine remotely: ssh -f -L 5901:localhost:5900 -N -C -o Compression=yes -o CompressionLevel=9 machine name or ip vncviewer YMMV. Obviously, you need to make sure that the port ssh is using is open through any firewall. None of this is really Cygwin-specific so further discussion on this l list along this line is really off-topic though. -- Larry Hall http://www.rfk.com RFK Partners, Inc. (508) 893-9779 - RFK Office 838 Washington Street (508) 893-9889 - FAX Holliston, MA 01746 -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: How to run _X_ Session from RH8 via ssh -X? How to run vnc via ssh?
Siegfried Heintze wrote: [snip] (2) For reasons I don't understand, there was a conflict between my router's sshd and my cygwin's sshd so I resolved the problem by changing the cygwin's configuration file to start sshd on a different port. Now, using a Red Hat 8 client, I can use both rdesktop and ssh to create two different simultaneous sessions on my win2003 server. However, I cannot seem to start an X session from my ssh -X -p 892 [EMAIL PROTECTED] session. I tried running explorer . and that just hung. OK, that was not an X program. Then I tried /usr/X11R6/bin/xclock and it said it could not open the display. Having already done a xhost+ remote wan address before running ssh I tried export DISPLAY=client lan address:0.0 but that did not help: it still could not open the display. If you are using ssh -X or -Y you don't need to set DISPLAY, in fact ssh already did set it. But if you set DISPLAY then X uses the normal ports and those will have to be opened/redirected on the firewall. Do I need to punch a whole in my client's firewall? I doubt the will let me do that. Not if you only use ssh. But take in consideration that you changed ssh to use port 892, that one is the one that will have to be opened. Don't I need to start the xserver? In the remote system? no. [snip] winCheckDisplayNumber - Cygwin/X is already running on display 0 It was running already but it's not needed unless you want to use VNC. (3) What about vnc? I have installed RealVNC on both the RH8 client and the Windows 2003 server. For VNC you'll need to open port 5901 (or 5801 for http); this is only for the first window, it really is 5900 + display number, in case you have more than one user connecting to the same machine. Is there also a cygwin VNC? I don't remember seeing one. No. Can I make vnc tunnel thru ssh? Would I use the -L or the -R qualifier on ssh? What would that look like? Yes. You have to start the VNC server and then (assuming display 1 is used): client machine# ssh -NfC -L 5901:server.name.or.ip:15901 [EMAIL PROTECTED] server machine# ssh -gN -L 15901:localhost:5901 [EMAIL PROTECTED] The numbers may have to be changed (as I said above) depending on what starting the server reported as display number or how is setup to start if you start it from the X server. On the client you use as VNC server localhost:1. HTH -- René Berber -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
RE: How to run _X_ Session from RH8 via ssh -X?
[snip] However, I cannot seem to start an X session from my ssh -X -p 892 [EMAIL PROTECTED] session. I tried running explorer . and that just hung. OK, that was not an X program. Then I tried /usr/X11R6/bin/xclock and it said it could not open the display. Having already done a xhost+ remote wan address before running ssh I tried export DISPLAY=client lan address:0.0 but that did not help: it still could not open the display. If you are using ssh -X or -Y you don't need to set DISPLAY, in fact ssh already did set it. But if you set DISPLAY then X uses the normal ports and those will have to be opened/redirected on the firewall. [snip] winCheckDisplayNumber - Cygwin/X is already running on display 0 It was running already but it's not needed unless you want to use VNC. Well what am I doing wrong? I forgot to mention: the firewall guarding the windows machine must have the necessary ports open or I would not be able to establish a console window on it. Why does /usr/X11R6/bin/xclock still say Error can't open display:? Thanks, Siegfried -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: How to run _X_ Session from RH8 via ssh -X?
Siegfried Heintze wrote: [snip] Why does /usr/X11R6/bin/xclock still say Error can't open display:? That looks like an explicit unsetting of DISPLAY, i.e. somewhere, probably your .profile/.bashrc/.bash_profile, has a unset DISPLAY. Starting in Cygwin: $ echo $DISPLAY :0 $ ssh -X [EMAIL PROTECTED] # echo $DISPLAY localhost:10.0 Notice that ssh created a pseudo display that will be used to tunnel the X protocol back to your local X server. -- René Berber -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
RE: How to run _X_ Session from RH8 via ssh -X?
[snip] Why does /usr/X11R6/bin/xclock still say Error can't open display:? That looks like an explicit unsetting of DISPLAY, i.e. somewhere, probably your .profile/.bashrc/.bash_profile, has a unset DISPLAY. Starting in Cygwin: $ echo $DISPLAY :0 $ ssh -X [EMAIL PROTECTED] # echo $DISPLAY localhost:10.0 Notice that ssh created a pseudo display that will be used to tunnel the X protocol back to your local X server. I did ssh -X [EMAIL PROTECTED] ls -A -1 | xargs grep -n DISPLAY * echo $DISPLAY The only place DISPLAY occurred (in the output) was in the .bash_history file. Echo $DISPLAY gave a blank line only. Any other suggestions? Sieg -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: How to run _X_ Session from RH8 via ssh -X?
Siegfried Heintze wrote: [snip] echo $DISPLAY Any other suggestions? Check /etc/sshd_config on the server, configure it to forward X11: # X11 tunneling options X11Forwarding yes X11DisplayOffset 10 X11UseLocalhost yes After restarting sshd try: ssh -X [EMAIL PROTECTED] 'echo $DISPLAY' -- René Berber -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
Re: How to run _X_ Session from RH8 via ssh -X?
Siegfried Heintze wrote: [snip] Why does /usr/X11R6/bin/xclock still say Error can't open display:? That looks like an explicit unsetting of DISPLAY, i.e. somewhere, probably your .profile/.bashrc/.bash_profile, has a unset DISPLAY. Starting in Cygwin: $ echo $DISPLAY :0 $ ssh -X [EMAIL PROTECTED] # echo $DISPLAY localhost:10.0 Notice that ssh created a pseudo display that will be used to tunnel the X protocol back to your local X server. I did ssh -X [EMAIL PROTECTED] ls -A -1 | xargs grep -n DISPLAY * echo $DISPLAY The only place DISPLAY occurred (in the output) was in the .bash_history file. Echo $DISPLAY gave a blank line only. Any other suggestions? On linux system: /etc/ssh/sshd_config X11Forwarding yes /etc/ssh/ssh_config ForwardX11 yes On cygwin system: /etc/defaults/etc/sshd_config X11Forwarding yes /etc/defaults/etc/ssh_config ForwardX11 yes Doug -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
RE: How to run _X_ Session from RH8 via ssh -X?
Thanks Dan and Rene! It works. But now I just realized the obvious: Only X GUIS work and not windows. Is this correct? I assume I can tunnel rdesktop the same way I tunnel vnc? I guess I'll try tunneling both vnc and rdesktop next. Siegfried -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://x.cygwin.com/docs/ FAQ: http://x.cygwin.com/docs/faq/
