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Date: Tue, 15 Apr 2014 14:14:58 -0700
From: Ken Brown <kbrown AT cornell DOT edu>
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To: cygwin AT cygwin DOT com
Subject: Re: Still testing needed: New passwd/group AD/SAM integration
References: <20140410145323 DOT GB2437 AT calimero DOT vinschen DOT de> <53487C6E DOT 9010905 AT cornell DOT edu> <20140412111325 DOT GA3271 AT calimero DOT vinschen DOT de> <53494BAA DOT 3020005 AT cornell DOT edu>
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I've come across a glitch involving sshd and cygserver.  I normally have 
both running, but I've discovered that I have to start sshd before I 
start cygserver, or else I have problems (can't ssh from a 
non-administrator account to an administrator account).  Here are the 
details on 64 bit Cygwin; I haven't tested 32 bit:

I've installed the full 2014-04-12 snapshot and removed /etc/passwd and 
/etc/group.  I have an ordinary user kbrown and an administrator user 
kbrown-admin.  I now do the following:

1. Start sshd.
2. Start cygserver.
3. Start a Cygwin Terminal as user kbrown.
4. ssh into the kbrown-admin account (with publickey authentication used 
by default).

$ ssh kbrown-admin AT localhost
Enter passphrase for key '/home/kbrown/.ssh/id_rsa':
setsockopt IPV6_TCLASS 16: Protocol not available:
Last login: Tue Apr 15 13:57:12 2014 from fe80::9956:cbba:6928:151c%11

Everything is fine.

Now I close the Cygwin Terminal, stop both services, and restart them in 
the other order (cygserver first, then sshd).  Repeating steps 3 and 4, 
I can't login:

$ ssh kbrown-admin AT localhost
kbrown-admin AT localhost's password:
Permission denied, please try again.
kbrown-admin AT localhost's password:

Notice that (a) I didn't get a prompt for the passphrase for my ssh key, 
and (b) my password wasn't accepted.

Ken

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