Re: SSH X11 forwarding issues (with verbose data)

["Philip H. Schlesinger" <pschlesi at uci dot edu>]

Hi Jack.  ssh -Y ended up with me doing the following:

$ /usr/X11R6/bin/xauth list 127.0.0.1:0.0
/usr/X11R6/bin/xauth:  creating new authority file /home/phil/.Xauthority

Nothing happened on the other xterm window, so I went looking for 
/home/phil/.Xauthority - it didn't exist! (yes, I typed ls -a) :)

So I tried ssh -X ... and ended up with me doing the following:

$ /usr/X11R6/bin/xauth -f /tmp/ssh-Q7ut6XsxFY/xauthfile generate 
127.0.0.1:0.0 MIT-MAGIC-COOKIE-1 untrusted timeout 1200
/usr/X11R6/bin/xauth:  creating new authority file 
/tmp/ssh-Q7ut6XsxFY/xauthfile

now a file called "xauthfile" was created in that directory, and its 
contents were:
0MIT-MAGIC-COOKIE-1&<12 character long pseudorandom string>

But still, no movement on the xterm window.

Here's the oddity:
Why could I just start the Cygwin/X server and run putty for windows 
with X11 forwarding and it'll work just fine?

Why would X-Win32 with its built-in StarnetSSH client work just fine 
completely on its own?

Somebody else posted that ZoneAlarm jumps in the way of Cygwin's OpenSSH 
- even if ZoneAlarm is shut down, but I have a hard time believing 
that's the issue...

- Phil


Jack Tanner wrote:
> No, it should be on the local computer. Try this: run startxwin.bat, 
> then open two xterms. In one, run the ssh -Y -vv ... command. When it 
> freezes, in the other xterm try to run the xauth command by hand.
>
> By the way, I gave you the wrong command syntax below. That should've been
>
> $ /usr/X11R6/bin/xauth -f /tmp/ssh-WHATEVER/...
>
> If I'm wrong, and it is on the remote computer, then from the second 
> xterm you should be able to ssh in without X forwarding, and try it on 
> the remote machine.
>
>
> Philip H. Schlesinger wrote:
> > That appears to be something generated on the fly - and by the looks 
> > of it, on the remote computer, as that directory doesn't exist.
> >
> > - Phil
> >
> > Jack Tanner wrote:
> > > Philip H. Schlesinger wrote:
> > > > Jack Tanner wrote:
> > > >  >> debug2: x11_get_proto: /usr/X11R6/bin/xauth -f
> > > >  >> /tmp/ssh-zfHmWgkGRG/xauthfile generate 127.0.0.1:0.0
> > > >  >> MIT-MAGIC-COOKIE-1 untrusted timeout 1200 2>/dev/null
> > > >  >
> > > >  > 1) What do you get if you try that by command hand (sans the 
> > > > /dev/null
> > > >  > redirection)?
> > > >
> > > > Not sure what you mean here...forgive my n00b-ness...
> > >
> > > Err, that should've said "try that command by hand". As in,
> > >
> > > $ /tmp/ssh-WHATEVER/xauthfile generate [...] timeout 1200
> > >
> > > (Drop the 2> /dev/null bit at the end, thus keeping the output from 
> > > xauthfile from being redirected to /dev/null.)
> > >
> > >
> > > --
> > > Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
> > > Problem reports:       http://cygwin.com/problems.html
> > > Documentation:         http://x.cygwin.com/docs/
> > > FAQ:                   http://x.cygwin.com/docs/faq/
> >
> >
> > --
> > Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
> > Problem reports:       http://cygwin.com/problems.html
> > Documentation:         http://x.cygwin.com/docs/
> > FAQ:                   http://x.cygwin.com/docs/faq/
>
>
> --
> Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
> Problem reports:       http://cygwin.com/problems.html
> Documentation:         http://x.cygwin.com/docs/
> FAQ:                   http://x.cygwin.com/docs/faq/


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://x.cygwin.com/docs/
FAQ:                   http://x.cygwin.com/docs/faq/