Re: enabling remote X Window sessions

2014-08-25 Thread Liam O'Toole
On 2014-08-22, Buchs, Kevin J. wrote: > Thanks for the comment, Nuno. I only want to run a single X client, so > XDMCP is not the way to go. My problem is solely getting Xorg to start > on Debian without the -nolisten tcp argument. On CentOS, this is the > default and I can run remote X clients

Re: enabling remote X Window sessions

2014-08-23 Thread Roberto De Oliveira
It's very weird, I was testing with "DisallowTCP = false" in /etc/gdm3/daemon.conf and it worked, I'm using gdm3 3.12.2-2.1 (Debian testing). Maybe a bug on gdm3 3.4? 2014-08-21 12:28 GMT-04:30 Buchs, Kevin J. : > I want to run X clients on a remote machines and display on my Debian 7.6 > machin

Re: enabling remote X Window sessions

2014-08-23 Thread Chris Bannister
On Fri, Aug 22, 2014 at 04:29:49PM -0500, Buchs, Kevin J. wrote: > You asked to which version of CentOS I was referring: it is 6.5, the latest > version. Honestly, having been involved in computing since the first days of > X-Window, I can't think of another case where I observed the X server locke

Re: enabling remote X Window sessions

2014-08-22 Thread Buchs, Kevin J.
Reco, I tried Xephr as you suggested. It seems to get around the -nolisten tcp choice. Since I will have to specify the display for the remote X client, I won't have to map the port, but can just use myhost:1.0 for DISPLAY. I got xclock -display myhost:1.0 working from myhost. Thanks for poin

Re: enabling remote X Window sessions

2014-08-22 Thread Gian Uberto Lauri
> "R" == Reco writes: R> On Fri, 22 Aug 2014 16:34:04 +0200 "Gian Uberto Lauri" R> wrote: >> Reco writes: > Running a single application remotely is hardly a >> justification to > running main Xorg in insecure mode. >> >> If you know what you do you can set up things whith an appropriate

Re: enabling remote X Window sessions

2014-08-22 Thread Reco
On Fri, 22 Aug 2014 16:34:04 +0200 "Gian Uberto Lauri" wrote: > Reco writes: > > Running a single application remotely is hardly a justification to > > running main Xorg in insecure mode. > > If you know what you do you can set up things whith an appropriate level > of security. > > Even for

Re: enabling remote X Window sessions

2014-08-22 Thread Reco
On Fri, 22 Aug 2014 10:28:07 -0500 "Buchs, Kevin J." wrote: > SAS as in http://www.sas.com - confusing. > > When I do a nmap scan of port 6000 on my machine from the remote one it > reports the Host is up, so I don't think it is blocked. I've used host > name and IP address to the same effect

Re: enabling remote X Window sessions

2014-08-22 Thread Reco
On Fri, 22 Aug 2014 16:48:19 +0200 Erwan David wrote: > > Running a single application remotely is hardly a justification to > > running main Xorg in insecure mode. > > Listeniçng on tcp does NOT mean insecure mode. > see Xsecurity(7) First, $ man 7 Xsecurity No manual entry for Xsecurity in s

Re: enabling remote X Window sessions

2014-08-22 Thread Buchs, Kevin J.
SAS as in http://www.sas.com - confusing. When I do a nmap scan of port 6000 on my machine from the remote one it reports the Host is up, so I don't think it is blocked. I've used host name and IP address to the same effect when trying to run the X clients on the remote host. I might be able

Re: enabling remote X Window sessions

2014-08-22 Thread Gian Uberto Lauri
Buchs, Kevin J. writes: > Marc (and Gian hinted at) mentioned that /etc/X11/xinit/xserverrc has > the "-nolisten tcp" in it. This was as he said. However, editing the > file did not stop Xorg from getting started with the very same > parameter. It must be buried in another place, I fear, ha

Re: enabling remote X Window sessions

2014-08-22 Thread Erwan David
On Fri, Aug 22, 2014 at 04:09:09PM CEST, Reco said: > Hi. > > On Fri, 22 Aug 2014 08:10:45 -0500 > "Buchs, Kevin J." wrote: > > > Thanks for the comment, Nuno. I only want to run a single X client, so > > XDMCP is not the way to go. My problem is solely getting Xorg to start > > on Debian wi

Re: enabling remote X Window sessions

2014-08-22 Thread Buchs, Kevin J.
Thanks for all the replies and suggestions. Though ssh, vnc, remote XDMCP, Xephr are all fine for running X clients when there is interactive execution of the client by the user, it does not work in my case where there is Open Grid Scheduler batch execution. In my case, the X client of interest

Re: enabling remote X Window sessions

2014-08-22 Thread Gian Uberto Lauri
Reco writes: > Hi. > > On Fri, 22 Aug 2014 08:10:45 -0500 > "Buchs, Kevin J." wrote: > > > Thanks for the comment, Nuno. I only want to run a single X client, so > > XDMCP is not the way to go. My problem is solely getting Xorg to start > > on Debian without the -nolisten tcp argument

Re: enabling remote X Window sessions

2014-08-22 Thread Reco
Hi. On Fri, 22 Aug 2014 08:10:45 -0500 "Buchs, Kevin J." wrote: > Thanks for the comment, Nuno. I only want to run a single X client, so > XDMCP is not the way to go. My problem is solely getting Xorg to start > on Debian without the -nolisten tcp argument. On CentOS, this is the > default a

Re: enabling remote X Window sessions

2014-08-22 Thread Gian Uberto Lauri
John Hasler writes: > Kevin writes: > > Thanks for the comment, Nuno. I only want to run a single X client, so > > XDMCP is not the way to go. My problem is solely getting Xorg to start > > on Debian without the -nolisten tcp argument. > > Then why not just use ssh? > https://www.debian.org

Re: enabling remote X Window sessions

2014-08-22 Thread Marc SCHAEFER
On Fri, Aug 22, 2014 at 08:10:45AM -0500, Buchs, Kevin J. wrote: > Thanks for the comment, Nuno. I only want to run a single X client, > so XDMCP is not the way to go. My problem is solely getting Xorg to > start on Debian without the -nolisten tcp argument. On CentOS, this > is the default and I c

Re: enabling remote X Window sessions

2014-08-22 Thread John Hasler
Kevin writes: > Thanks for the comment, Nuno. I only want to run a single X client, so > XDMCP is not the way to go. My problem is solely getting Xorg to start > on Debian without the -nolisten tcp argument. Then why not just use ssh? https://www.debian.org/doc/manuals/debian-reference/ch07.en.htm

Re: enabling remote X Window sessions

2014-08-22 Thread Buchs, Kevin J.
Thanks for the comment, Nuno. I only want to run a single X client, so XDMCP is not the way to go. My problem is solely getting Xorg to start on Debian without the -nolisten tcp argument. On CentOS, this is the default and I can run remote X clients without any issues. Since switching to Debian

Re: enabling remote X Window sessions

2014-08-21 Thread Nuno Magalhães
Search around for XDMCP tutorials. Your local machine needs an Xserver (like Xorg). The machine you want to connect to needs a display manager (gdm, kdm, xdm... i don't think slim supports XDMCP) and the xclients you want to run. You'll have no sound. Look into pulseaudio or jack for that. HTH,

Re: enabling remote X Window sessions

2014-08-21 Thread Brian Flaherty
On 08/21/2014 11:07 AM, Buchs, Kevin J. wrote: Brian, Thanks. I was heading in the direction of doing something like you suggested (though I am not sure how to stop gdm and not log myself out), On my machine, when I start the sytem, I end up at a graphical login slim, like gdm. If I keypress

Re: enabling remote X Window sessions

2014-08-21 Thread Buchs, Kevin J.
Brian, Thanks. I was heading in the direction of doing something like you suggested (though I am not sure how to stop gdm and not log myself out), but I thought there has to be a better way. Though it may be the case that I have other X communication problems, based on ps (showing the command

Re: enabling remote X Window sessions

2014-08-21 Thread Brian Flaherty
On 08/21/2014 09:58 AM, Buchs, Kevin J. wrote: I want to run X clients on a remote machines and display on my Debian 7.6 machine. I recognize the security risk. I usually run the lxde desktop. I see that gdm3 is starting the Xorg server with "-nolisten tcp" arguments. I read that this can be disa

Re: enabling remote X Window sessions

2014-08-21 Thread Buchs, Kevin J.
Thanks for the suggestion, but I don't have those options. I don't get to control how the remote client is executed as it is running in as an Open Grid Scheduler batch job. Kevin Buchs Research Computer Services Phone: 507-538-5459 Mayo Clinic 200 1st. St SW Rochester, MN 55905 http://m

Re: enabling remote X Window sessions

2014-08-21 Thread Bzzzz
On Thu, 21 Aug 2014 11:58:27 -0500 "Buchs, Kevin J." wrote: > I want to run X clients on a remote machines and display on my > Debian 7.6 machine. I recognize the security risk. I usually run > the lxde desktop. I see that gdm3 is starting the Xorg server with > "-nolisten tcp" arguments. I read

enabling remote X Window sessions

2014-08-21 Thread Buchs, Kevin J.
I want to run X clients on a remote machines and display on my Debian 7.6 machine. I recognize the security risk. I usually run the lxde desktop. I see that gdm3 is starting the Xorg server with "-nolisten tcp" arguments. I read that this can be disabled by editing /etc/gdm3/daemon.conf to add