I have a similar problem to this post: http://cygwin.com/ml/cygwin/2012-06/msg00507.html
except that the version I am using is 1.7.25, downloaded relatively recently.
It seems that making an ssh connection to the CygWin host, using RSA
certificate to achieve passwordless connection, causes the SSHD service on the
host to perform an authentication using the account that the service is hosted
with ... but that it apparently does not qualify the account with a domain (ie.
the local machine) and apparently the assumption is that it should be a DOMAIN
account - there was no DOMAIN\CYG_SERVER account so it fails and I assume it
then tries DOMAIN\Guest as a fall-back, with the wrong password and therefore
locks out DOMAIN\Guest
So I created a DOMAIN\CYG_SERVER account with the same password as
<LOCALDOMAIN>\CYG_SERVER and presto!, SSH connections from my client with no
domain guest lockout.
I have googled to infinity and beyond and found only a few references to this
problem, and none of them suggest this or any other solution, merely that you
can try this and that (one relating to duplicated SID's - not the reason)
I have tried to attach the sanitized output of cygcheck -s -v -r > cygcheck.out
as suggested and copies of the ssh config files, but Cygwin mailserver sees the
mail as spam?!
The SSH configs on both the host and client have been modified to eliminate any
passworded/ Kerberos/GSSAPI options leaving just the publickey authentication.
Can anyone specify a better solution than creating a matching domain account?
I can't help thinking that I have missed some configuration item that would
deal with this directly.
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cygcheck.out
Description: cygcheck.out
# $OpenBSD: ssh_config,v 1.23 2007/06/08 04:40:40 pvalchev Exp $ # This is the ssh client system-wide configuration file. See # ssh_config(5) for more information. This file provides defaults for # users, and the values can be changed in per-user configuration files # or on the command line. # Configuration data is parsed as follows: # 1. command line options # 2. user-specific file # 3. system-wide file # Any configuration value is only changed the first time it is set. # Thus, host-specific definitions should be at the beginning of the # configuration file, and defaults at the end. # Site-wide defaults for some commonly used options. For a comprehensive # list of available options, their meanings and defaults, please see the # ssh_config(5) man page. # Host * # ForwardAgent no # ForwardX11 no # RhostsRSAAuthentication no RSAAuthentication yes PasswordAuthentication no HostbasedAuthentication no GSSAPIAuthentication no GSSAPIDelegateCredentials no # BatchMode no # CheckHostIP yes # AddressFamily any # ConnectTimeout 0 # StrictHostKeyChecking ask # IdentityFile ~/.ssh/identity IdentityFile ~/.ssh/id_rsa # IdentityFile ~/.ssh/id_dsa # Port 22 # Protocol 2,1 # Cipher 3des # Ciphers aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc # MACs hmac-md5,hmac-sha1,umac...@openssh.com,hmac-ripemd160 # EscapeChar ~ # Tunnel no # TunnelDevice any:any # PermitLocalCommand no
# $OpenBSD: sshd_config,v 1.89 2013/02/06 00:20:42 dtucker Exp $ # This is the sshd server system-wide configuration file. See # sshd_config(5) for more information. # This sshd was compiled with PATH=/bin:/usr/sbin:/sbin:/usr/bin # The strategy used for options in the default sshd_config shipped with # OpenSSH is to specify options with their default value where # possible, but leave them commented. Uncommented options override the # default value. Port 22 #AddressFamily any #ListenAddress 0.0.0.0 #ListenAddress :: # The default requires explicit activation of protocol 1 #Protocol 2 # HostKey for protocol version 1 #HostKey /etc/ssh_host_key # HostKeys for protocol version 2 #HostKey /etc/ssh_host_rsa_key #HostKey /etc/ssh_host_dsa_key #HostKey /etc/ssh_host_ecdsa_key # Lifetime and size of ephemeral version 1 server key #KeyRegenerationInterval 1h #ServerKeyBits 1024 # Logging # obsoletes QuietMode and FascistLogging #SyslogFacility AUTH LogLevel DEBUG # Authentication: #LoginGraceTime 2m #PermitRootLogin yes StrictModes no #MaxAuthTries 6 #MaxSessions 10 #RSAAuthentication yes PubkeyAuthentication yes # The default is to check both .ssh/authorized_keys and .ssh/authorized_keys2 # but this is overridden so installations will only check .ssh/authorized_keys AuthorizedKeysFile .ssh/authorized_keys #AuthorizedPrincipalsFile none #AuthorizedKeysCommand none #AuthorizedKeysCommandUser nobody # For this to work you will also need host keys in /etc/ssh_known_hosts RhostsRSAAuthentication no # similar for protocol version 2 HostbasedAuthentication no # Change to yes if you don't trust ~/.ssh/known_hosts for # RhostsRSAAuthentication and HostbasedAuthentication #IgnoreUserKnownHosts no # Don't read the user's ~/.rhosts and ~/.shosts files #IgnoreRhosts yes # To disable tunneled clear text passwords, change to no here! PasswordAuthentication no #PermitEmptyPasswords no # Change to no to disable s/key passwords ChallengeResponseAuthentication no # Kerberos options KerberosAuthentication no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes #KerberosGetAFSToken no # GSSAPI options GSSAPIAuthentication no #GSSAPICleanupCredentials yes # Set this to 'yes' to enable PAM authentication, account processing, # and session processing. If this is enabled, PAM authentication will # be allowed through the ChallengeResponseAuthentication and # PasswordAuthentication. Depending on your PAM configuration, # PAM authentication via ChallengeResponseAuthentication may bypass # the setting of "PermitRootLogin without-password". # If you just want the PAM account and session checks to run without # PAM authentication, then enable this but set PasswordAuthentication # and ChallengeResponseAuthentication to 'no'. UsePAM no #AllowAgentForwarding yes #AllowTcpForwarding yes #GatewayPorts no #X11Forwarding no #X11DisplayOffset 10 #X11UseLocalhost yes #PrintMotd yes #PrintLastLog yes #TCPKeepAlive yes #UseLogin no UsePrivilegeSeparation sandbox # Default for new installations. #PermitUserEnvironment no #Compression delayed #ClientAliveInterval 0 #ClientAliveCountMax 3 #UseDNS yes #PidFile /var/run/sshd.pid #MaxStartups 10:30:100 #PermitTunnel no #ChrootDirectory none #VersionAddendum none # no default banner path #Banner none # override default of no subsystems Subsystem sftp /usr/sbin/sftp-server # Example of overriding settings on a per-user basis #Match User anoncvs # X11Forwarding no # AllowTcpForwarding no # ForceCommand cvs server
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