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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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<refentry id='faillog.8'>
  <!--  $Id: faillog.8.xml,v 1.9 2005/06/16 15:50:30 kloczek Exp $ -->
  <refmeta>
    <refentrytitle>faillog</refentrytitle>
    <manvolnum>8</manvolnum>
  </refmeta>
  <refnamediv id='name'>
    <refname>faillog</refname>
    <refpurpose>display faillog records or set login failure limits</refpurpose>
  </refnamediv>

  <refsynopsisdiv id='synopsis'>
    <cmdsynopsis>
      <command>faillog</command>    
      <arg choice='opt'>
        <replaceable>options</replaceable>
      </arg>
    </cmdsynopsis>
  </refsynopsisdiv>
  
  <refsect1 id='description'>
    <title>DESCRIPTION</title>
    <para><command>faillog</command> formats the contents of the failure log
      from <filename>/var/log/faillog</filename> database. It also can be
      used for maintains failure counters and limits. Run
      <command>faillog</command> without arguments display only list of user
      faillog records who have ever had a login failure.
    </para>
  </refsect1>
  
  <refsect1 id='options'>
    <title>OPTIONS</title>
    <para>
      The options which apply to the <command>faillog</command> command
      are:
    </para>
    <variablelist remap='IP'>
      <varlistentry>
        <term><option>-a</option>, <option>--all</option></term>
        <listitem>
          <para>Display faillog records for all users.</para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term><option>-h</option>, <option>--help</option></term>
        <listitem>
          <para>Display help message and exit.</para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>
          <option>-l</option>, <option>--lock-time</option>
          <replaceable>SEC</replaceable>
        </term>
        <listitem>
          <para>
            Lock accout to <emphasis remap='I'>SEC</emphasis>
            seconds after failed login.
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>
          <option>-m</option>, <option>--maximum</option>
          <replaceable>MAX</replaceable>
        </term>
        <listitem>
          <para>Set maiximum number of login failures after the account is
            disabled to <emphasis remap='I'>MAX</emphasis>. Selecting
            <emphasis remap='I'>MAX</emphasis> value of 0 has the effect of
            not placing a limit on the number of failed logins. The maximum
            failure count should always be 0 for <emphasis
            remap='B'>root</emphasis> to prevent a denial of services attack
            against the system.
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term><option>-r</option>, <option>--reset</option></term>
        <listitem>
          <para>Reset the counters of login failures or one recor if used
            with -u <emphasis remap='I'>LOGIN</emphasis> option. Write
            access to <filename>/var/log/faillog</filename> is required for
            this option.
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term><option>-t</option>, <option>--time</option>
        <replaceable>DAYS</replaceable>
        </term>
        <listitem>
          <para>
            Display faillog records more recent than <emphasis
            remap='I'>DAYS</emphasis>. The <option>-t</option> flag overrides
            the use of <option>-u</option>.
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>
          <option>-u</option>, <option>--user</option>
          <replaceable>LOGIN</replaceable>
        </term>
        <listitem>
          <para>Display faillog record or maintains failure counters and
            limits (if used with <option>-l</option>, <option>-m</option> or
            <option>-r</option> options) only for user with <emphasis
            remap='I'>LOGIN</emphasis>.
          </para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>
  
  <refsect1 id='caveats'>
    <title>CAVEATS</title>
    <para><command>faillog</command> only prints out users with no successful
      login since the last failure. To print out a user who has had a
      successful login since their last failure, you must explicitly request
      the user with the <option>-u</option> flag, or print out all users
      with the <option>-a</option> flag.
    </para>
  </refsect1>
  
  <refsect1 id='files'>
    <title>FILES</title>
    <variablelist>
      <varlistentry>
        <term><filename>/var/log/faillog</filename></term>
        <listitem>failure logging file</listitem>
      </varlistentry>
    </variablelist>
  </refsect1>
  
  <refsect1 id='see_also'>
    <title>SEE ALSO</title>
    <para><citerefentry>
        <refentrytitle>login</refentrytitle><manvolnum>1</manvolnum>
      </citerefentry>,
      <citerefentry>
        <refentrytitle>faillog</refentrytitle><manvolnum>5</manvolnum>
      </citerefentry>
    </para>
  </refsect1>
  
  <refsect1 id='author'>
    <title>AUTHOR</title>
    <para>Julianne Frances Haugh (jockgrrl@ix.netcom.com)</para>
  </refsect1>
</refentry>
