SBC's and ssh's encryptions

[Gene Heskett]

On Sunday 27 November 2016 18:40:54 Douglas E Engert wrote:

> On 11/27/2016 5:21 PM, Peter Stuge wrote:
> > Gene Heskett wrote:
> >> The odroid64 already has an x system running as soon as I log into
> >> the odroid64.  Its $DISPLAY is :0
> >
> > That's fine. Remember to run xhost +192.168.71.pi on odroid64.
> >
> >> the pi cannot open the display on the odroid64.
> >
> > Show an error message when starting e.g. xterm on pi.
> >
> >> an echo $DISPLAY on the pi shows: (after I've done the commands)
> >> 192.168.71.9:0
>
> That looks like the local display in the pi but you said it has no
> monitor is attached.

Its a 10 inch move of the HDMI and USB cables :)
>
> If you ran ssh on odroid64 and had the X11 Forwarding correct, the
> sshd on pi will set up an X proxy on pi and set DISPLAY=localhost:10.0
> for the first user and pass this to the user in the environment On the
> pi you also need /etc/ssh/sshd_config:
> X11Forwarding yes
> X11DisplayOffset 10

not specifically but those are the defaults.
ssh -Y forwarding works, I can turn around to the milling machine, log 
into the pi from with an ssh -Y, and run the program, getting the laggy 
image on the milling machines monitor.

> If you have a ~/.ssh/rc file on the pi you may need to add code to
> process the cookie and set the DISPLAY. See the man ssh on the pi,.
> look for DISPLAY
> This is done before the login shell, so you must not set the
> DISPLAY again in your login files.
>
> Just ran some tests using my old pi from 2013:
> Linux raspberrypi 3.18.11+ #781 PREEMPT Tue Apr 21 18:02:18 BST 2015
> armv6l GNU/Linux OpenSSH_6.0p1 Debian-4+deb7u2, OpenSSL 1.0.1e 11 Feb
> 2013
>
> SSh from Windows 10 using PuTTY, with Xming.
>
>  From a Ubuntu-16.4  VM to the pi using
> ssh -l user -X ip-address-of-pi
> the display gets set as  DISPLAY=localhost:11.0
>
> /usr/bin/X11/xev on the pi is a good test program.
> or x-terminal-emulator
>
> For performance you may want to google for:
> "X windows" performance ssh
>
> > If the odroid IP is 192.168.71.9 then that is correct.
> >
> >
> > Way off topic now.
> >
> >
> > //Peter
> > _______________________________________________
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> > openssh-unix-dev at mindrot.org
> > https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev


Cheers, Gene Heskett
-- 
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