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<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 &lt;johnsonm@redhat.com&gt;<newline>
(based on code taken from a module written by Andrew G. Morgan
&lt;morgan@parc.power.net&gt;).

<tag><bf>Maintainer:</bf></tag>
Michael K. Johnson &lt;johnsonm@redhat.com&gt;

<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>

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