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Full Discussion: SSH Authentication issue.
Operating Systems HP-UX SSH Authentication issue. Post 302903549 by ygemici on Wednesday 28th of May 2014 11:03:35 AM
Old 05-28-2014
Quote:
Originally Posted by chacko193
Thanks Ygemici for you reply!!

I have already tried out not logging the "auth" events in vShell and that seems to work.

I got to thinking that since the client is initiating the ssh session, it will be the client that sends the "none" auth method request and from my other searches was able to confirm this as well. So I came to the conclusion that there will be some option within the ssh config files which prevents sending out the "none" auth request and hence my futile searches.

I will try out the rest of your suggestions and get back to when I have some results.

---------- Post updated at 11:30 PM ---------- Previous update was at 11:26 AM ----------

I tried changing the AuthenticationsAllowed and AuthenticationsRequired to "password" only in vShell, but still it is using the "none" authentication first and then only it is going for password.

---------- Post updated 05-27-14 at 04:42 AM ---------- Previous update was 05-26-14 at 11:30 PM ----------

I have one query. You said you were able to connect to server with any initial auth method using bitvise client. I also tried that and noticed the same,i.e , I am not getting that "none rejected" message.

So how is this bitvise client able to choose the initial auth method? If they are able to do it, why cannot we do the same. After all they too will be using the same open-ssh only(may be with some modifications). And I think it is the only one were none is listed as an auth method.

---------- Post updated at 07:42 AM ---------- Previous update was at 04:42 AM ----------
it has differ codes in the bitvise ssh client ( executable) and it does not send to ssh-server with none-method as in its source code files for know the auth-methods.(written in that way)
and it does not use the openssh sources, it uses FlowSsh libraries and compiled from c++ platform for windows.
 

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LEARN ABOUT CENTOS

smartcard-auth-ac

SYSTEM-AUTH-AC(5)						File Formats Manual						 SYSTEM-AUTH-AC(5)

NAME

       system-auth-ac,	password-auth-ac,  smartcard-auth-ac, fingerprint-auth-ac, postlogin-ac - Common configuration files for PAMified services
       written by authconfig(8)

SYNOPSIS

       /etc/pam.d/system-auth-ac

DESCRIPTION

       The purpose of this configuration file is to provide common configuration file  for  all  applications  and  service  daemons  calling  PAM
       library.

       The system-auth configuration file is included from all individual service configuration files with the help of the include directive. When
       authconfig(8) writes the system PAM configuration file it replaces the default system-auth file with a symlink pointing	to  system-auth-ac
       and writes the configuration to this file. The symlink is not changed on subsequent configuration changes even if it points elsewhere. This
       allows system administrators to override the configuration written by authconfig.

       The  authconfig	now  writes  the  authentication  modules  also  into  additional  PAM	configuration  files  /etc/pam.d/password-auth-ac,
       /etc/pam.d/smartcard-auth-ac, and /etc/pam.d/fingerprint-auth-ac.  These configuration files contain only modules which perform authentica-
       tion with the respective kinds of authentication tokens.  For example /etc/pam.d/smartcard-auth[-ac] will not contain pam_unix and pam_ldap
       modules and /etc/pam.d/password-auth[-ac] will not contain pam_pkcs11 and pam_fprintd modules.

       The  file  /etc/pam.d/postlogin-ac  contains  common services to be invoked after login. An example can be a module that encrypts an user's
       filesystem or user's keyring and is decrypted by his password.

       The PAM configuration files of services which are accessed by remote connections such as sshd or ftpd now include the  /etc/pam.d/password-
       auth configuration file instead of /etc/pam.d/system-auth.

EXAMPLE

       Configure  system  to  use  pam_tally2  for  configuration  of maximum number of failed logins. Also call pam_access to verify if access is
       allowed.

       Make system-auth symlink point to system-auth-local which contains:

       auth	       requisite       pam_access.so
       auth	       requisite       pam_tally2.so deny=3 lock_time=30 
					     unlock_time=3600
       auth	       include	       system-auth-ac
       account	       required        pam_tally2.so
       account	       include	       system-auth-ac
       password        include	       system-auth-ac
       session	       include	       system-auth-ac

BUGS

       None known.

SEE ALSO

       authconfig(8), authconfig-gtk(8), pam(8), system-auth(5)

Red Hat, Inc.							   2010 March 31						 SYSTEM-AUTH-AC(5)
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