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From: "Jason Pyeron" <jpyeron@pdinc.us>
To: <cygwin@cygwin.com>
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In-Reply-To: <2dfb0a68-b9e3-f9fb-817b-651fec02adf5@onespin.com>
Subject: RE: [cygwin] Problem with ssh(d)
Date: Wed, 10 Nov 2021 09:56:25 -0500
Organization: PD Inc
Message-ID: <026c01d7d643$228d7dd0$67a87970$@pdinc.us>
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> -----Original Message-----
> From: Strasser, Dominik (DI SW ICS ICV)
> Sent: Wednesday, November 10, 2021 9:50 AM
> 
> Hi all,
> I am facing the following problem with my sshd installation.
> 
> We are in an AD environment. AD holds the needed data for ssh(d) to
> work. I can log into cygwin using ssh. But if I have a key stored
> .ssh/authorized_keys for passwordless login, the groups my user is in
> differs from the one w/o an authorized keys. Unfortunately exactly the
> group(s) for accessing the shared filesystems is missing. We were
> investigating a lot and the only workaround we found is that the sshd
> service runs under the user we want to log in. This unfortunately
> disables any other user to log into the cygwin machine. When debugging
> ssh with -vvv, there is no visible difference between the login with
> authorized_keys or without (of course there is a difference wrt. the
> login method).
> 
> This is cygwin 3.2.0 and openssh openssh-8.8p1-1.
> 
> Any clues ?

Passwordless login and network shares are incompatible by Microsoft design. You can see this in Microsoft task scheduler as well.

Our solution is to not rely on network file sharing, as it is disabled in our environment anyway due to security issues.

v/r,

Jason Pyeron

--
Jason Pyeron  | Architect
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