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Date:	Sat, 12 Feb 2011 15:16:52 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: OpenSSH-5.8p1-1 Connection Problems
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On Feb 12 12:31, Andrew Ng wrote:
> I've also been experiencing connection problems with OpenSSH
> versions newer than 5.6p1-2. These problems occur with both Cygwin
> sshd (versions 5.6 to 5.8) and other UNIX sshd (e.g. Solaris).
> 
> I've attached client and server debug logs of both Cygwin ssh 5.6
> and 5.8 connecting to a Cygwin sshd 5.8, and a cygcheck dump.
> 
> If you need any more information or would like me to try new
> binaries then please let me know.

As usual the logs only show what happens, but they don't show why.

I installed OpenSSH-5.8p1 on Windows 7 64 bit.  I tried to connect from
32 and 64 bit Cygwin machines using ssh 5.8p1 and I tried it from a
Linux machine with ssh 5.5p1.  No problems at all.  I removed the ECDSA
host key to get the same "Can't load host key" message... still no
problems at all.

What about deleting and reinstalling sshd as a service?  Maybe that
helps.  

  $ cygrunsrv -E sshd
  $ cygrunsrv -R sshd
  $ cd /etc
  $ mkdir OLD-KEYS
  $ mv ssh_host* OLD-KEYS
  $ rmdir /var/empty
  $ rm -f /var/log/sshd.log
  $ ssh-host-config
  $ mv OLD-KEYS/* .
  $ chown cyg_server ssh_host*
  $ cygrunsrv -S sshd
 

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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