Re: ssh mysteriously failing to forward X

[Jerome BENOIT <benoit@eie.gr>]

I have encounterd exactly the same trouble:
from a message of the list I fund the cause.

The file `/etc/ssh/ssh_config' in the updated version
does not have the following lines:

Host localhost
	HostName localhost.localdomain
	ForwardAgent yes
	ForwardX11 yes

while there were in the previous version.
Add them and try again.

I hope it helps,
Jerome BENOIT


Michael Jinks wrote:
> Hi all.
>
> We have a growing number of Debian machines which are ceasing to forward
> X11 connections.  X forwarding is on in sshd_config ("X11Forwarding yes"
> in sshdconfig), and I'm not seeing any errors; here's an excerpt from
> 'ssh -vX <hostname>':
>
> debug1: ssh-userauth2 successful: method password
> debug1: channel 0: new [client-session]
> debug1: send channel open 0
> debug1: Entering interactive session.
> debug1: ssh_session2_setup: id 0
> debug1: channel request 0: pty-req
> debug1: Requesting X11 forwarding with authentication spoofing.
> debug1: channel request 0: x11-req
> debug1: channel request 0: shell
> debug1: fd 3 setting TCP_NODELAY
> debug1: channel 0: open confirm rwindow 0 rmax 32768
> Last login: Wed Jul 10 11:34:25 2002 from wicked.uchicago.edu
>
> Looks to me as though the X forward request went through, and nobody
> refused to forward or otherwise complained, but:
>
> $ echo $DISPLAY
>
> $ 
>
> These machines used to work; I wonder if a recent version of OpenSSH is
> causing the trouble?  At any rate I don't know what to do next,
> everything I look at seems to say that X /should/ be working, but
> clearly it's not.
>
> So far all of the machines with this problem are Potato; Woody machines
> work fine.
>
> Any thoughts?  Thanks,
> -mrj



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