Open display error

[Sergio Brandano]

>Do you have X11Forwarding turned on in both /etc/sshd_config and
>~/.ssh/config?  Try running both ssh and sshd in debug mode and see if
>the output doesn't tell you something.
> 
>jim knoble
 
 I have no error messages on the debug, as far as I can see.

 On  /etc/ssh/sshd_config I have:

> X11Forwarding yes

 and I remember it was the first thing I did some days ago.
 I do not have ~/.ssh/config, but I found /etc/ssh/ssh_config
 where ForwardX11 was not active. I created the ~/.ssh/config
 where I allowed box2 as possible host:

Host box2
    ForwardAgent yes
    ForwardX11 yes

 As a result

- --> ssh -f xterm

 now works as it should (DISPLAY is set to box1:10.0
 and, obviously, there are no problems concerning xhost).
 (The debug trace was fine too.)

 The following still does not work: 

- --> ssh -f box2 /usr/X11R6/bin/xterm
- --> _X11TransSocketINETConnect: Can't connect: errno = 111
_X11TransSocketINETConnect: Can't connect: errno = 111
_X11TransSocketINETConnect: Can't connect: errno = 111
_X11TransSocketINETConnect: Can't connect: errno = 111
_X11TransSocketINETConnect: Can't connect: errno = 111
_X11TransSocketINETConnect: Can't connect: errno = 111
/usr/X11R6/bin/xterm Xt error: Can't open display: box2:10.0

 I see it created DISPLAY automatically, but in the wrong way.
 Instead of box2:10.0, it should open box1:10.0.
 (the debug trace was dead.)

 Sergio