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@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@localhost
kbrown-admin@localhost's password:
Permission denied, please try again.
kbrown-admin@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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