can't ssh to self

[Lex Ein <lex_ein at f-m dot fm>]

After what seemed like a normal May 2005 Cygwin update, my Ohio remote 
Win2K SP4 machine stopped accepting ssh connections.  For two years up 
to that point, no Cygwin update interfered with normal SSH operation.

Via a naked VNC connection, in the Cygwin shell, 'ssh -vvv localhost' 
fails with the error message "ssh_exchange_identification: Connection 
closed by remote host".  See -vvv output below:

I removed cygwin from the machine and freshly installed (today) the 
current release of Cygwin and openssh/ssl, cyrunsrv, etc.  Same result.  
I have tried with and without ntsec.   sshd does run, it appears in the 
ps output..

Installation on about six other systems has been trouble-free; each of 
these successes encouraged me to retry getting the remote system running 
ssh again.  Every time, failure.

I'm not understanding the clues in man sshd or man ssh or the readmes.

I don't seem to be able to get sshd to generate log entries to 
/var/log/* as suggested by man sshd.

I'm afraid I need some damn handholding to get this thing running.

$ ssh -vvv localhost
OpenSSH_4.2p1, OpenSSL 0.9.8a 11 Oct 2005
debug1: Reading configuration data /etc/ssh_config
debug2: ssh_connect: needpriv 0
debug1: Connecting to localhost [127.0.0.1] port 22.
debug1: Connection established.
debug1: identity file /home/user/.ssh/identity type -1
debug3: Not a RSA1 key file /home/user/.ssh/id_rsa.
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug3: key_read: missing keytype
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug2: key_type_from_name: unknown key type '-----END'
debug3: key_read: missing keytype
debug1: identity file /home/user/.ssh/id_rsa type 1
debug3: Not a RSA1 key file /home/user/.ssh/id_dsa.
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug3: key_read: missing keytype
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug2: key_type_from_name: unknown key type '-----END'
debug3: key_read: missing keytype
debug1: identity file /home/user/.ssh/id_dsa type 2
ssh_exchange_identification: Connection closed by remote host

user@machine ~
$


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