Verify DOS environment using Command Prompt:

    C:\>echo %CYGWIN%
    ntsec tty

    C:\>path
    PATH=C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\cygwin\bin


Start a Cygwin Bash shell.  Stop and remove sshd service:

    dpchrist@p42800e:~$ cygrunsrv -E sshd
    dpchrist@p42800e:~$ cygrunsrv -R sshd


Remove sshd log:

    dpchrist@p42800e:~$ rm /var/log/sshd.log
    rm: remove write-protected file `/var/log/sshd.log'? y


Install sshd using ssh-host-config script:

    dpchrist@p42800e:~$ ssh-host-config
    Overwrite existing /etc/ssh_config file? (yes/no) yes
    Generating /etc/ssh_config file
    Overwrite existing /etc/sshd_config file? (yes/no) yes
    Privilege separation is set to yes by default since OpenSSH 3.3.
    However, this requires a non-privileged account called 'sshd'.
    For more info on privilege separation read /usr/share/doc/openssh/README.privsep.

    Should privilege separation be used? (yes/no) yes
    Generating /etc/sshd_config file


    Warning: The following functions require administrator privileges!

    Do you want to install sshd as service?
    (Say "no" if it's already installed as service) (yes/no) yes

    Which value should the environment variable CYGWIN have when
    sshd starts? It's recommended to set at least "ntsec" to be
    able to change user context without password.
    Default is "ntsec".  CYGWIN=ntsec tty

    The service has been installed under LocalSystem account.
    To start the service, call `net start sshd' or `cygrunsrv -S sshd'.

    Host configuration finished. Have fun!


Start sshd service:

    dpchrist@p42800e:~$ cygrunsrv -S sshd


Test it:

    dpchrist@p42800e:~$ ssh localhost
    dpchrist@localhost's password:
    Last login: Sat Nov 27 22:19:44 2004 from 192.168.1.246
    dpchrist@p42800e:~$ exit
    logout
    Connection to localhost closed.


Look at sshd log:

    dpchrist@p42800e:~$ cat /var/log/sshd.log


Reboot.  Try to log in:

    dpchrist@p42800e:~$ ssh localhost
    ssh_exchange_identification: Connection closed by remote host


Look if sshd is running:

    dpchrist@p42800e:~$ ps -a
          PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND
         1952       1    1952       1952    ?   18 08:25:36 /usr/bin/cygrunsrv
         2044       1    2044       2044    ?   18 08:25:36 /usr/bin/cygrunsrv
          196    1952     196        244    ?   18 08:25:37 /usr/sbin/cron
          204    2044     204        252    ?   18 08:25:42 /usr/bin/exim-4.43-1
          904       1     904        904    ?   18 08:25:40 /usr/bin/cygrunsrv
          952     904     952       1012    ?   18 08:25:41 /usr/sbin/sshd
         3004       1    3004       3004    0 1003 08:26:11 /usr/bin/bash
         3572    3004    3572       3584    0 1003 08:26:41 /usr/bin/ps

    dpchrist@p42800e:~$ cygrunsrv -Q sshd
    Service sshd exists
    Type                : Own Process
    Current State       : Running
    Controls Accepted   : Accept Stop

Windows Services indicates "CYGWIN sshd" has status "started", Startup Type "Automatic", and Log On As "Local System".


/var/log/sshd.log has a clue:

    dpchrist@p42800e:~$ cat /var/log/sshd.log
          3 [main] sshd 952 fork_copy: linked dll data/bss pass 0 failed, 0x3DB000..0x3DB050, done 0, windows pid 3484, Win32 error 487


Windows Task Manager shows no process with PID 3484.


Manually stop and start sshd:

    dpchrist@p42800e:~$ cygrunsrv -E sshd
    dpchrist@p42800e:~$ cygrunsrv -S sshd
    dpchrist@p42800e:~$ ssh localhost
    dpchrist@localhost's password:
    Last login: Sun Nov 28 08:23:05 2004 from localhost