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<!--
$Id: pam_nologin.sgml,v 1.2 1997/01/04 21:56:55 morgan Exp $
This file was written by Michael K. Johnson <johnsonm@redhat.com>
-->
<sect1>The no-login module
<sect2>Synopsis
<p>
<descrip>
<tag><bf>Module Name:</bf></tag>
<tt/pam_nologin/
<tag><bf>Author:</bf></tag>
Written by Michael K. Johnson <johnsonm@redhat.com><newline>
(based on code taken from a module written by Andrew G. Morgan
<morgan@parc.power.net>).
<tag><bf>Maintainer:</bf></tag>
Michael K. Johnson <johnsonm@redhat.com>
<tag><bf>Management groups provided:</bf></tag>
authentication
<tag><bf>Cryptographically sensitive:</bf></tag>
<tag><bf>Security rating:</bf></tag>
<tag><bf>Clean code base:</bf></tag>
1 warning about dropping const
<tag><bf>System dependencies:</bf></tag>
<tag><bf>Network aware:</bf></tag>
</descrip>
<sect2>Overview of module
<p>
Provides standard Unix <em/nologin/ authentication.
<sect2>Authentication component
<p>
<descrip>
<tag><bf>Recognized arguments:</bf></tag>
<tag><bf>Description:</bf></tag>
Provides standard Unix <em/nologin/ authentication. If the file
<tt>/etc/nologin</tt> exists, only root is allowed to log in; other
users are turned away with an error message. All users (root or
otherwise) are shown the contents of <tt>/etc/nologin</tt>.
<p>
If the file <tt>/etc/nologin</tt> does not exist, this module succeeds
silently.
<tag><bf>Examples/suggested usage:</bf></tag>
In order to make this module effective, all login methods should
be secured by it. It should be used as a <tt>required</tt>
method listed before any <tt>sufficient</tt> methods in order to
get standard Unix nologin semantics.
</descrip>
<!--
End of sgml insert for this module.
-->
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