No xauth program

Thu Sep 2 22:48:00 GMT 2010

> On 9/2/2010 11:11 AM, Jon TURNEY wrote:
>> On 01/09/2010 20:29, Scott T. Marshall wrote:
>>> when I connect using
>>> ssh -Yv localhost
>>> the last few lines of output are:
>>> debug1: Entering interactive session.
>>> debug1: No xauth program.
>>> Warning: No xauth data; using fake authentication data for X11
>>> forwarding.
>>> debug1: Requesting X11 forwarding with authentication spoofing.
>>> debug1: Remote: No xauth program; cannot forward with spoofing.
>>> Last login: Wed Sep 1 15:03:40 2010 from ::1
>>> I don't understand the No xauth program part. I have xauth in /bin
>>> which xauth
>>> returns
>>> /usr/bin/xauth
>>> and when I check the permissions on xauth, I see that they are 755 and
>>> I am
>>> the owner.
>> You might like to try if xauth can actually run successfully?
On 02/09/2010 18:56, Scott T. Marshall wrote:
> Thanks for the suggestion Jon. I don't know exactly what I should ask xauth to
> do or what syntax is requires (the man page was not completely clear to me),
> but what I can say is that if I try to execute xauth in an xterm, it gives no
> errors.
> I can also say that when I ssh to other linux machines, I can open X
> applications, but my cygwin/windows 7 x64 box will not forward x windows when
> someone log onto it.

Hmm... it looks like the latest openssh package has the wrong default path to 
xauth for some reason.

As a workaround, you might try adding XAuthLocation=/usr/bin/xauth to 
/etc/sshd_config and restarting sshd.

Volunteer Cygwin/X X Server maintainer

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