[SLUG] X11 forwarding
Hi I'm utterly puzzled. Perchance some wise person here can say ah-ha One of my client-machine executes a GUI program from a server (ssh, X11 forward, public key etc) One in 10 there is no display, the server side of the app is gone soon after it starts (I see a short log of it's startup) On the client: pos02 4568 4566 0 08:51 ?00:00:00 /usr/bin/ssh -vv -lpos02 stmbk /opt/rms/session/pos02/pos02 oblivious of any woes on the server (but no gui) Reboot the client and all is well until the next time it fails. The only hint I see is this AUDIT: Tue Oct 4 08:51:04 2011: 4338 Xorg: client 2 rejected from local host Thanks James-- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 forwarding
Not an answer but... One thing to remember is that server and client in X11 is the reverse of what you think. The server is the screen and the client is the application. ssh forward the X11 across the link then it comes out on the other side. ssh generates a dummy 'x11 server' on the machine you are connecting to and forwards the client application messages to that X11 server that you are connecting to. On the other side the X11 comes out as a 'client' and is forwarded to the server screen that you started at. -Original Message- From: James Linder Sent: Tuesday, October 04, 2011 1:21 PM To: slug@slug.org.au Subject: [SLUG] X11 forwarding Hi I'm utterly puzzled. Perchance some wise person here can say ah-ha One of my client-machine executes a GUI program from a server (ssh, X11 forward, public key etc) One in 10 there is no display, the server side of the app is gone soon after it starts (I see a short log of it's startup) On the client: pos02 4568 4566 0 08:51 ?00:00:00 /usr/bin/ssh -vv -lpos02 stmbk /opt/rms/session/pos02/pos02 oblivious of any woes on the server (but no gui) Reboot the client and all is well until the next time it fails. The only hint I see is this AUDIT: Tue Oct 4 08:51:04 2011: 4338 Xorg: client 2 rejected from local host Thanks James-- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 forwarding
James == James Linder j...@tigger.ws writes: James Hi I'm utterly puzzled. Perchance some wise person here can say James ah-ha James One of my client-machine executes a GUI program from a server James (ssh, X11 forward, public key etc) One in 10 there is no James display, the server side of the app is gone soon after it James starts (I see a short log of it's startup) On the client: pos02 James 4568 4566 0 08:51 ? 00:00:00 /usr/bin/ssh -vv -lpos02 stmbk James /opt/rms/session/pos02/pos02 oblivious of any woes on the James server (but no gui) My *guess* (and that's all it is) is that the previous connection is still hanging around, blocking access to the new one, possibly because the previous session didn't shut down cleanly. Peter C -- Dr Peter Chubb peter DOT chubb AT nicta.com.au http://www.ertos.nicta.com.au ERTOS within National ICT Australia All things shall perish from under the sky/Music alone shall live, never to die -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
On Mon, Nov 17, 2008 at 04:40:11PM +0900, jam wrote: On Monday 17 November 2008 10:00:07 [EMAIL PROTECTED] wrote: am [EMAIL PROTECTED] writes: [snip] Not a trivial question :-) and not as simple as -X I'm sitting in front of THIS machine, and logged in I run a program on this machine, say xeyes or xmsg I want the display of that program on THAT machine x programs look at the current environment to find out the X display to display to, set DISPLAY=host:MajourScreen#.MinorScreen# - you will have to get around firewalls and Xauth as well. Alex James -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- Neither in French nor in English nor in Mexican. - George W. Bush 04/21/2001 declining to take reporters' questions during a photo op with Canadian Prime Minister Jean Chretien signature.asc Description: Digital signature -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
jam [EMAIL PROTECTED] writes: On Monday 17 November 2008 10:00:07 [EMAIL PROTECTED] wrote: am [EMAIL PROTECTED] writes: On Monday 17 November 2008 06:10:16 [EMAIL PROTECTED] wrote: [...] I'm logged into THIS machine and I want to run a program on THIS machine but display on THAT machine. Which machine are you physically located in front of? Specifically, are you sitting in front of THAT, and logged in to THIS via ssh? If so it should be as simple as passing '-X' to your ssh session, and running your application on THIS. If that /doesn't/ work, can you post: ssh THIS env | grep DISPLAY ssh THIS type xauth ssh -X -v THIS /usr/bin/xterm (If you don't have /usr/bin/xterm on THIS then, please, substitute some other X11 program that is installed.) That will help work out where the process is going wrong Not a trivial question :-) and not as simple as -X I figured. :) I'm sitting in front of THIS machine, and logged in I run a program on this machine, say xeyes or xmsg I want the display of that program on THAT machine OK: you have two options here, more or less. One is that you can run the X session direct over the network; that has several steps: 1. Turn on TCP sockets for X on THAT, which are disabled by default these days. 2. Enable connections from THIS: THAT# xhost +THIS # not very secure... 3. Set your display on this: THIS# export DISPLAY=THAT:0 4. Run your application. That has no real security, since everything (including keystrokes) crosses the network clear-text, and authentication is IP based. You can season that with the X security stuff, but I wouldn't suggest you bother, since it doesn't really improve your security position much. Do this only on a trusted network. Another is to establish some sort of secure tunnel from THIS to THAT and run your X traffic over that. ssh is the obvious choice, but alternatives are possible. For me, I would probably do it like this: THIS# ssh THAT -t env DISPLAY=:0 ssh -Xv THIS /usr/bin/xterm That logs in to THAT, sets the DISPLAY variable, then connects back to THIS via SSH to run the X application. From that xterm I could start everything else. Otherwise, I would consider enabling X TCP connections from localhost on THAT, then using a reverse SSH tunnel to connect THIS:6000 to THAT:6000, and set DISPLAY=localhost:0 on THIS. You would have to copy your xauth details by hand, though, which is less fun than you might hope. Regards, Daniel -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
On Tuesday 18 November 2008 10:00:09 [EMAIL PROTECTED] wrote: On Monday 17 November 2008 10:00:07 [EMAIL PROTECTED] wrote: am [EMAIL PROTECTED] writes: [snip] Not a trivial question :-) and not as simple as -X I'm sitting in front of THIS machine, and logged in I run a program on this machine, say xeyes or xmsg I want the display of that program on THAT machine x programs look at the current environment to find out the X display to display to, set DISPLAY=host:MajourScreen#.MinorScreen# - you will have to get around firewalls and Xauth as well. Thanks Alex nope ! this is *really* a non trivial question. the DISPLAY=THAT works only if TCP/IP forwarding is enabled, which it is NOT on modern distros [quote It is unlikely that something as complicated as xorg does not have exploits /quote} What I'm trying to achieve is the above using ssh which can be done [see LTSP's LDM] but zot-in-hell I cannot fathom out what and how they do it! Using TCP/IP then discovering that in a year or two that this has been removed is the reason for me not doing it. James -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
jam [EMAIL PROTECTED] writes: On Tuesday 18 November 2008 10:00:09 [EMAIL PROTECTED] wrote: On Monday 17 November 2008 10:00:07 [EMAIL PROTECTED] wrote: am [EMAIL PROTECTED] writes: [snip] Not a trivial question :-) and not as simple as -X I'm sitting in front of THIS machine, and logged in I run a program on this machine, say xeyes or xmsg I want the display of that program on THAT machine x programs look at the current environment to find out the X display to display to, set DISPLAY=host:MajourScreen#.MinorScreen# - you will have to get around firewalls and Xauth as well. Thanks Alex nope ! this is *really* a non trivial question. the DISPLAY=THAT works only if TCP/IP forwarding is enabled, which it is NOT on modern distros [quote It is unlikely that something as complicated as xorg does not have exploits /quote} What I'm trying to achieve is the above using ssh which can be done [see LTSP's LDM] but zot-in-hell I cannot fathom out what and how they do it! LTSP boot their display manager, make a connection from the X server (where the display is) to the application server (where the session runs) over a secure channel, then use normal X over that channel. This is, more or less, the double-ssh method I mentioned earlier. Most people don't have that trouble, though, because they are sitting in front of the graphical display rather than trying to run an application on the local system to another, remote, graphical display they are not physically located in front of. Using TCP/IP then discovering that in a year or two that this has been removed is the reason for me not doing it. TCP/IP support hasn't actually been removed[1], just disabled by default, normally by the display manager (gdm, kdm) passing the arguments '-nolisten tcp' to the X server. By removing that option you should be able to enable TCP connections again, at which point things can go on as they did -- but, obviously, you take responsibility for the security risks implied. Regards, Daniel For a trusted local LAN they are probably not that great, but on an untrusted network you would have to be crazy. Footnotes: [1] Caveat: I only checked Debian and Ubuntu, so /perhaps/ some other distribution went plum-crazy here. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
Kyle [EMAIL PROTECTED] writes: can someone pls provide me with an idiot's guide to getting X11 running over ssh. Install xauth(1) on the remote machine. Run 'ssh -X remote.host' Run your x11 program. That is to say, I want to be able to ssh into a Linux box from Windows (or MAC or Linux natively - but primarily Windows) using putty and then have the gui come up for me. [...] I have attempted to understand how to do it using putty, but I seem to get lost. Can anyone suggest an idiot proof tutorial or some such which actually refers to up-to-date versions and processes/requirements? Well, with PuTTY, turn on X11 forwarding in the connection options rather than running 'ssh -X', but otherwise the process is identical. What went wrong when you tried running your remote X11 applications? Regards, Daniel -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
quote who=Kyle I know I could use VNC, but; 1. I have to be able to use std ports to get thru corporate firewalls and 2. I would like to have that connection secure And as best I can tell VNC doesn't support ssh; not to mention I wouldn't know how to send it through a std port without interfering with other services on those ports. Look at the ssh man page (or Google) for port forwarding -- that will allow you to do VNC over ssh. If you have any trouble, give SLUG another call. :-) - Jeff -- Robot Parade http://www.robotparade.com.au/ m. +61 423 989 818 p. +61 2 9318 0284 f. +61 2 9318 2884 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
2008/11/16 Kyle [EMAIL PROTECTED]: Peter, for some clarification please. Peter Chubb wrote: On Linux, BSD, Solaris, MacOSX or other Unices that are running X locally, you do $ ssh -f -X host xterm On the host you need to have X11Forwarding yes X11DisplayOffset 10 in /etc/ssh/sshd_config ## So to be clear on this; The 2 X11 params above are set in sshd_confing on the host I wish to control (controlled host)? From a Linux box, I would issue your above command; and from an OSX host, I can use the X11.app (which is I believe and Xterm application). Correct? And providing you have xauth and xterm installed on the remote host, you should get a local terminal window, from which you can run anything you want. ## So these need to be installed on the controlled host? You *won't* be able to run the window manager there (is that what you mean by `The gui' ???). It runs on your local machine. ## I can see the possibility for confusion here. To be clear; My initial question has to do with running the controlled host's desktop much like a VNC or RDP session. Which host it physically runs on, I don't suppose I really mind too much. So long as I can have it all running through std. corporately-available ports. You should however be able to run anything else. The way this works is that clients on the host talk to the SSH proxy on that host which tunnels the protocol back to the display indicated by the DISPLAY variable in ssh's environment on yo ## But if I understand your post correctly, you're telling me how to connect to a host and then run X-based applications displaying on my controlling host, but which are actually running from the controlled-host? Hey, Why not just use VNC over ssh? Crash course: Setup the vnc server on the linux box (system-preferences-remote desktop on Ubuntu) Then in the putty options add a port forward from an available port (e.g. '12345') to 'localhost:5900'. On your windows VNC client you then connect to 'localhost:12345' and it should connect to the remote VNC server. VNC might not be secure or run on the desired (corporate friendly) port, but forwarding it over ssh can help solve both of those issues... cheers, Owen. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
As ever, ask SLUG and you end up with 5 different ways of doing it. :-) Thanks all. I should be able to get at least one of those working. Daniel, most common problem I come across doing it the remote X11 way is no display setup. And never sure which particular variable it is that the relevant appl. wants. Aside from that however, the wish to run the 'desktop' (a.k.a Window Manager - I guess) is so I can leave programs running, log in and check on their progress. Kind Regards Kyle -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
Kyle [EMAIL PROTECTED] writes: As ever, ask SLUG and you end up with 5 different ways of doing it.:-) Thanks all. I should be able to get at least one of those working. Daniel, most common problem I come across doing it the remote X11 way is no display setup. And never sure which particular variable it is that the relevant appl. wants. Well, the particular variable is 'DISPLAY', which tells the X11 applications which display server to talk to. ssh X forwarding /should/ set that up for you automatically, including authentication, so that says that something went wrong at that stage. However... Aside from that however, the wish to run the 'desktop' (a.k.a Window Manager - I guess) is so I can leave programs running, log in and check on their progress. ...for that, you need something other than X forwarding -- X11 has no native display disconnection or relocation capabilities, so you would be starting a new session and then shutting it down each time. If you intend to do a significant amount of work remotely, especially over high latency links, then I recommend NX, which others have also mentioned. The performance is significantly better than VNC. Regards, Daniel -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
On Monday 17 November 2008 06:10:16 [EMAIL PROTECTED] wrote: ask SLUG and you end up with 5 different ways of doing it. :-) Thanks all. I should be able to get at least one of those working. Daniel, most common problem I come across doing it the remote X11 way is no display setup. And never sure which particular variable it is that the relevant appl. wants. Aside from that however, the wish to run the 'desktop' (a.k.a Window Manager - I guess) is so I can leave programs running, log in and check on their progress. There are tantalizing hints in TBM but I've not made any work, so anyone ... I'm logged into THIS machine and I want to run a program on THIS machine but display on THAT machine. Thanks James PS using ssh, not disable access control and enable tcp/ip: export DISPLAY=THAT.machine:0 THISprogram -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
jam [EMAIL PROTECTED] writes: On Monday 17 November 2008 06:10:16 [EMAIL PROTECTED] wrote: ask SLUG and you end up with 5 different ways of doing it. :-) Thanks all. I should be able to get at least one of those working. Daniel, most common problem I come across doing it the remote X11 way is no display setup. And never sure which particular variable it is that the relevant appl. wants. Aside from that however, the wish to run the 'desktop' (a.k.a Window Manager - I guess) is so I can leave programs running, log in and check on their progress. There are tantalizing hints in TBM but I've not made any work, so anyone ... I'm logged into THIS machine and I want to run a program on THIS machine but display on THAT machine. Which machine are you physically located in front of? Specifically, are you sitting in front of THAT, and logged in to THIS via ssh? If so it should be as simple as passing '-X' to your ssh session, and running your application on THIS. If that /doesn't/ work, can you post: ssh THIS env | grep DISPLAY ssh THIS type xauth ssh -X -v THIS /usr/bin/xterm (If you don't have /usr/bin/xterm on THIS then, please, substitute some other X11 program that is installed.) That will help work out where the process is going wrong Regards, Daniel -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
On Monday 17 November 2008 10:00:07 [EMAIL PROTECTED] wrote: am [EMAIL PROTECTED] writes: On Monday 17 November 2008 06:10:16 [EMAIL PROTECTED] wrote: ask SLUG and you end up with 5 different ways of doing it. :-) Thanks all. I should be able to get at least one of those working. Daniel, most common problem I come across doing it the remote X11 way is no display setup. And never sure which particular variable it is that the relevant appl. wants. Aside from that however, the wish to run the 'desktop' (a.k.a Window Manager - I guess) is so I can leave programs running, log in and check on their progress. There are tantalizing hints in TBM but I've not made any work, so anyone ... I'm logged into THIS machine and I want to run a program on THIS machine but display on THAT machine. Which machine are you physically located in front of? Specifically, are you sitting in front of THAT, and logged in to THIS via ssh? If so it should be as simple as passing '-X' to your ssh session, and running your application on THIS. If that /doesn't/ work, can you post: ssh THIS env | grep DISPLAY ssh THIS type xauth ssh -X -v THIS /usr/bin/xterm (If you don't have /usr/bin/xterm on THIS then, please, substitute some other X11 program that is installed.) That will help work out where the process is going wrong Not a trivial question :-) and not as simple as -X I'm sitting in front of THIS machine, and logged in I run a program on this machine, say xeyes or xmsg I want the display of that program on THAT machine James -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] X11 Forwarding over ssh
Hiya folks, can someone pls provide me with an idiot's guide to getting X11 running over ssh. That is to say, I want to be able to ssh into a Linux box from Windows (or MAC or Linux natively - but primarily Windows) using putty and then have the gui come up for me. I know I could use VNC, but; 1. I have to be able to use std ports to get thru corporate firewalls and 2. I would like to have that connection secure And as best I can tell VNC doesn't support ssh; not to mention I wouldn't know how to send it through a std port without interfering with other services on those ports. I have attempted to understand how to do it using putty, but I seem to get lost. Can anyone suggest an idiot proof tutorial or some such which actually refers to up-to-date versions and processes/requirements? -- Kind Regards Kyle -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
Kyle == Kyle [EMAIL PROTECTED] writes: Kyle Hiya folks, can someone pls provide me with an idiot's guide to Kyle getting X11 running over ssh. Warning: I know NOTHING about Windows. On Linux, BSD, Solaris, MacOSX or other Unices that are running X locally, you do $ ssh -f -X host xterm On the host you need to have X11Forwarding yes X11DisplayOffset 10 in /etc/ssh/sshd_config And providing you have xauth and xterm installed on the remote host, you should get a local terminal window, from which you can run anything you want. You *won't* be able to run the window manager there (is that what you mean by `The gui' ???). It runs on your local machine. You should however be able to run anything else. The way this works is that clients on the host talk to the SSH proxy on that host which tunnels the protocol back to the display indicated by the DISPLAY variable in ssh's environment on yo -- Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au http://www.ertos.nicta.com.au ERTOS within National ICT Australia -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
Peter, for some clarification please. Peter Chubb wrote: On Linux, BSD, Solaris, MacOSX or other Unices that are running X locally, you do $ ssh -f -X host xterm On the host you need to have X11Forwarding yes X11DisplayOffset 10 in /etc/ssh/sshd_config ## So to be clear on this; The 2 X11 params above are set in sshd_confing on the host I wish to control (controlled host)? From a Linux box, I would issue your above command; and from an OSX host, I can use the X11.app (which is I believe and Xterm application). Correct? And providing you have xauth and xterm installed on the remote host, you should get a local terminal window, from which you can run anything you want. ## So these need to be installed on the controlled host? You *won't* be able to run the window manager there (is that what you mean by `The gui' ???). It runs on your local machine. ## I can see the possibility for confusion here. To be clear; My initial question has to do with running the controlled host's desktop much like a VNC or RDP session. Which host it physically runs on, I don't suppose I really mind too much. So long as I can have it all running through std. corporately-available ports. You should however be able to run anything else. The way this works is that clients on the host talk to the SSH proxy on that host which tunnels the protocol back to the display indicated by the DISPLAY variable in ssh's environment on yo ## But if I understand your post correctly, you're telling me how to connect to a host and then run X-based applications displaying on my controlling host, but which are actually running from the controlled-host? Kind Regards Kyle -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] X11 Forwarding over ssh
On Sun, Nov 16, 2008 at 05:13:38PM +1100, Kyle wrote: Hiya folks, can someone pls provide me with an idiot's guide to getting X11 running over ssh. You could also use NX, it's very fast and runs over port 22. You need to install nxserver at one end, either the proprietary one from nomachine.com or freenx. There are GPL clients for many platforms also downloadable from nomachine.com. Patrick Lesslie -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] X11 forwarding over SSH (with DHCP)
Calling SSH/X gurus! I am trying to get X11 forwarding over SSH working. I am using DHCP to obtain an IP and bring up my interface (eth0). When I SSH to my box, X forwarding works if there is an entry in my /etc/hosts file that matches the IP of that box (when I use a static IP). But it doesn't work if there is no such entry there. How do I get it to do this dynamically? I have read a bit about setting the DISPLAY variable to the fully qualified hostname but can't work out what display number(?) i.e. :10.0 etc.. to use? From what I can gather, it uses an offset of 10 for the remote displays. Any pointers would be gratefully received, as ever :-) TIA. -- ** * Simon Wong * ** -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
Re: [SLUG] X11 forwarding over SSH (with DHCP)
On Tue, 2002-02-26 at 03:16, Christopher Booth wrote: In your /etc/ssh/ssh_config file is there a line that says ForwardX11 yes Yes, this is set okay. also check for a line CheckHostIP yes a guess but try making that no That was commented out so I made that explicitly no. also clients should log on by ssh -X I am actually connecting from Solaris so it's +x, however, when I connect to my box with a static IP configured and the hostname in the /etc/hosts you don't need to do this as it forwards X11 as per the config. It seems that the problem is something to do with X authority adding the host name as lonewolf only and not the fully qualified name (I don't have a registered hostname) or the IP of the machine instead. I got this when I removed my local host name from the /etc/hosts file. /usr/bin/X11/xauth: (stdin):1: bad display name lonewolf:12.0 in add command Is there a setting for it to use the IP of the host? I ha da read through the manpage for xauth but it's quite confusing. Chris On 25 Feb 2002 15:31:36 +1100 Simon Wong [EMAIL PROTECTED] wrote: Calling SSH/X gurus! I am trying to get X11 forwarding over SSH working. I am using DHCP to obtain an IP and bring up my interface (eth0). When I SSH to my box, X forwarding works if there is an entry in my /etc/hosts file that matches the IP of that box (when I use a static IP). But it doesn't work if there is no such entry there. How do I get it to do this dynamically? I have read a bit about setting the DISPLAY variable to the fully qualified hostname but can't work out what display number(?) i.e. :10.0 etc.. to use? From what I can gather, it uses an offset of 10 for the remote displays. Any pointers would be gratefully received, as ever :-) TIA. -- ** * Simon Wong * ** -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug -- ** * Simon Wong * ** -- SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
