Re: More SSH Fun (X11 forwarding)
On 2002.07.01, Vineet Kumar <firstname.lastname@example.org> wrote:
> So anyway, here's a basic rundown of things to double-check:
> the server has "X11Forwarding yes" in its config (and that config has
> been loaded, i.e. the server has been restarted since the change).
Be specific: On the server, look at /etc/ssh/sshd_config ...
> the client has X11Forwarding yes in its config, in the right place (i.e.
> after where it says "Host *", and no later declarations override and
> disable it.)
Again, specific: On the client, look at /etc/ssh/ssh_config ...
and, on the client's ssh_config, it's "ForwardX11" not "X11Forwarding".
Here's a quick way to test:
$ grep -i X11 /etc/ssh/ssh_config /etc/ssh/sshd_config
If you want to filter out any lines that are entirely
$ grep -i X11 /etc/ssh/ssh_config /etc/ssh/sshd_config \
| sed -e 's/#.*//' | egrep -v ':$'
On my system, from this second command, I only get:
> you're not connecting with a key which is restricted with a
> no-X11-forwarding directive in the options section of the
Good thing to check, but certainly implies more SSH kung-fu
than the average user.
> DISPLAY is set on the client, and displaying of local X apps works
> before ever attempting a connect to the remote server. This means that
> the local xauth cookie is valid and authorized to connect to the local
> X server.
This is the analog to the standard helpdesk first question of
"is it plugged in?" Sometimes we forget to ask this one ...
> xauth is found at /usr/bin/X11/xauth, or the correct location is
> specified correctly with an XAuthLocation directive in the remote
> sshd's sshd_config, and the connecting user has correct (+rx)
> permissions on it.
Another good point.
> I'm about to review the thread one more time to see if you've posted any
> "ssh -v" or "sshd -d" outputs that may provide additional insight. If it
> continues to fail, those may be useful for us to diagnose the problem.
I just did this. The thread starts here:
I found no such output.
Dossy Shiobara mail: email@example.com
Panoptic Computer Network web: http://www.panoptic.com/
"He realized the fastest way to change is to laugh at your own
folly -- then you can let go and quickly move on." (p. 70)
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