SSH -X doesn't work without an export DISPLAY

[Michel Dubois]

Last question, 

I readed that the Xforward used the 6010 TCP port. On my red hat this port is 
not open. 
user at SUNserver :~$ ssh -X redhat 
Last login: Mon Jul  9 11:48:58 2007 from SUNserver
[user at redhat ~]$ telnet localhost 6010
Trying 10.0.2.7...
telnet: connect to address 10.0.2.7: Connection refused
telnet: Unable to connect to remote host: Connection refused

And when I try to do a "xhost +SUNserver" on my redhat, I got :
xhost:  unable to open display "localhost:12.0"

any Idea
Thanks in advance.............. 



On Monday 09 July 2007 13:24:50 you wrote:
> A great help will be the ssh+sshd config. files, sshd daemon startup
> parameters, in general sshd specification + security from your x display
> server.Not to be solved easy, this one, needs research, at least for me.
>
> On Mon, 2007-07-09 at 10:33 +0200, Michel Dubois wrote:
> > On Saturday 07 July 2007 10:36:15 harold molly wrote:
> > > Is there specific configuration required to connect to the
> > > ssh daemon on the destination server, solaris sshd man page?
> >
> > As the "ssh -Y" is not supported by the ssh client  of SUN, I don't know
> > how to do.
> > I think, there is a problem with the authorization cookies.
> > I forward you an extract of the ssh man page about the Xforwarding :
> >
> > User Commands                                              ssh(1)
> >
> >      -X    Enables X11 forwarding. This can also be specified  on
> >            a per-host basis in a configuration file.
> >
> > ENVIRONMENT VARIABLES
> >      ssh will normally set the following environment variables:
> >
> >      DISPLAY
> >            The DISPLAY variable indicates the location of the X11
> >            server.  It  is automatically set by ssh to point to a
> >            value of the form hostname:n where hostname  indicates
> >            the  host  where  the  shell runs, and n is an integer
> >            greater than or equal to  1.  ssh  uses  this  special
> >            value to forward X11 connections over the secure chan-
> >            nel. The user should normally not set  DISPLAY  expli-
> >            citly, as that will render the X11 connection insecure
> >            (and will  require  the  user  to  manually  copy  any
> >            required authorization cookies).
> >
> > I tried this command on Red Hat server but it doesn't work :
> > xauth add `echo "${DISPLAY}" | sed 's/.*\(:.*\)/\1/'` . `mcookie`



-- 
Cordialement.
----------------------
Michel Dubois
Ingénieur Support CIMPACA