On Oct 6 2014 7:44 PM, Gene Heskett wrote: > On Monday 06 October 2014 21:15:45 Jon Elson did opine > And Gene did reply: >> On 10/06/2014 10:17 AM, Jon Elson wrote: >> > On 10/06/2014 09:20 AM, Rene Hopf wrote: >> >> Hi, >> >> I am wondering how difficult it would be to have a remote >> display. >> >> I know linuxcnc can run headless, but how to interact with it? >> >> It would be nice to have the realtime stuff on a embedded device, >> >> like the beagleboard, and Axis running on my Desktop. >> >> X11 forwarding does not really work with OpenGL >> > >> > It doesn"t? I use : >> > ssh -X <user>@1.2.3.4 >> >> OK, one way to do this is to ssh into the CNC machine, but >> instead of using ssh to >> set up the transport, set the DISPLAY environment variable >> to point to the client >> machine, and make sure the client will accept an X >> connection from the CNC machine. >> Then, when you start LinuxCNC, it should open a >> non-encrypted X connection. >> If you set up a script on the CNC machine, it can all be >> done in one command. >> This should get pretty snappy X displays. >> >> Jon > > Why has no one pointed out that while -X allows x11 forwarding, -Y > does > this without the security restrictions. -X could not be made to work > the > last time I tried it to one of my buntu machines from a Mandrake > machine. > The diff? I was user UID 500 on the Mandrake, and user 1000 on the > buntu > boxes. But ssh -Y worked, read the man page. I haven't use -X > since. > Just set ForwardX11Trusted yes in the ssh config.
there is also some weird ssh tunings that can cause problems (for example it took me a month to figure out why I was not able to work on the supercomputers, and it was as simple as having my account permissions set to 760 instead of 700 which ssh considered that a BAD thing....). If you can track down the ssh config issue, then I would keep ForwardX11Trusted set to No -- as this helps with someone hacking into through your display driver, and I would not want some scriptkiddy poking around and mucking with a machine-tool while it was live just because I weakened security on X11. Jut my 2c until I knew for sure that it was not an issue. EBo -- ------------------------------------------------------------------------------ Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
