Re: SSH X11 forwarding issues (with verbose data)

2006-04-09 Thread Larry Hall (Cygwin X)

On 04/09/2006, Philip H. Schlesinger wrote:
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... 


Well, you could help convince yourself one way or the other by uninstalling
ZoneAlarm for the purposes of testing and try the failing scenario again.

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Re: SSH X11 forwarding issues (with verbose data)

2006-04-09 Thread Philip H. Schlesinger

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.)



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