7fa666b909
* src/faillog.c, man/faillog.8.xml: Harmonize long option in code and documentation. Use --lock-secs instead of --lock-time.
225 lines
7.5 KiB
XML
225 lines
7.5 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Copyright (c) 1989 - 1994, Julianne Frances Haugh
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Copyright (c) 2007 - 2009, Nicolas François
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the copyright holders or contributors may not be used to
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endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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-->
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<refentry id='faillog.8'>
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<!-- $Id$ -->
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<refmeta>
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<refentrytitle>faillog</refentrytitle>
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<manvolnum>8</manvolnum>
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<refmiscinfo class="sectdesc">System Management Commands</refmiscinfo>
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</refmeta>
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<refnamediv id='name'>
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<refname>faillog</refname>
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<refpurpose>display faillog records or set login failure limits</refpurpose>
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</refnamediv>
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<refsynopsisdiv id='synopsis'>
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<cmdsynopsis>
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<command>faillog</command>
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<arg choice='opt'>
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<replaceable>options</replaceable>
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</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1 id='description'>
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<title>DESCRIPTION</title>
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<para>
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<command>faillog</command> displays the contents of the failure log
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database (<filename>/var/log/faillog</filename>). It can also
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set the failure counters and limits. When
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<command>faillog</command> is run without arguments, it only displays the
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faillog records of the users who had a login failure.
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</para>
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</refsect1>
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<refsect1 id='options'>
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<title>OPTIONS</title>
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<para>
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The options which apply to the <command>faillog</command> command
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are:
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</para>
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<variablelist remap='IP'>
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<varlistentry>
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<term><option>-a</option>, <option>--all</option></term>
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<listitem>
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<para>
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Display (or act on) faillog records for all users having an
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entry in the <filename>faillog</filename> database.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-h</option>, <option>--help</option></term>
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<listitem>
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<para>Display help message and exit.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>-l</option>, <option>--lock-secs</option>
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<replaceable>SEC</replaceable>
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</term>
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<listitem>
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<para>
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Lock account for <replaceable>SEC</replaceable>
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seconds after failed login.
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</para>
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<para>
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Write access to <filename>/var/log/faillog</filename>
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is required for this option.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>-m</option>, <option>--maximum</option>
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<replaceable>MAX</replaceable>
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</term>
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<listitem>
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<para>
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Set the maximum number of login failures after the account is
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disabled to <replaceable>MAX</replaceable>.
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</para>
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<para>
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Selecting a
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<replaceable>MAX</replaceable> value of 0 has the effect of not
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placing a limit on the number of failed logins.
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</para>
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<para>
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The maximum
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failure count should always be 0 for <emphasis>root</emphasis>
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to prevent a denial of services attack against the system.
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</para>
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<para>
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Write access to <filename>/var/log/faillog</filename>
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is required for this option.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-r</option>, <option>--reset</option></term>
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<listitem>
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<para>
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Reset the counters of login failures.
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</para>
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<para>
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Write access to <filename>/var/log/faillog</filename>
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is required for this option.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-t</option>, <option>--time</option>
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<replaceable>DAYS</replaceable>
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</term>
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<listitem>
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<para>
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Display faillog records more recent than
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<replaceable>DAYS</replaceable>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>-u</option>, <option>--user</option>
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<replaceable>LOGIN</replaceable>|<replaceable>RANGE</replaceable>
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</term>
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<listitem>
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<para>
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Display faillog record or maintains failure counters and limits
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(if used with <option>-l</option>, <option>-m</option> or
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<option>-r</option> options) only for the specified user(s).
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</para>
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<para>
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The users can be specified by a login name, a numerical user
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ID, or a <replaceable>RANGE</replaceable> of users. This
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<replaceable>RANGE</replaceable> of users can be specified
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with a min and max values
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(<replaceable>UID_MIN-UID_MAX</replaceable>), a max value
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(<replaceable>-UID_MAX</replaceable>), or a min value
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(<replaceable>UID_MIN-</replaceable>).
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>
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When none of the <option>-l</option>, <option>-m</option>, or
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<option>-r</option> options are used, <command>faillog</command>
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displays the faillog record of the specified user(s).
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</para>
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<para>
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NOTE: in display mode, only the records of users which currently
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exist in the system are displayed. In the other modes (when the
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<option>-l</option>, <option>-m</option>, or <option>-r</option>
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options are used), the records of the user, or the range of users,
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or all the users that may have an entry in the faillog database will
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be changed. This is useful to reset records of users that have been
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deleted or set a policy in advance for a range of users.
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</para>
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</refsect1>
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<refsect1 id='caveats'>
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<title>CAVEATS</title>
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<para>
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<command>faillog</command> only prints out users with no successful
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login since the last failure. To print out a user who has had a
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successful login since their last failure, you must explicitly request
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the user with the <option>-u</option> flag, or print out all users
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with the <option>-a</option> flag.
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</para>
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</refsect1>
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<refsect1 id='files'>
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<title>FILES</title>
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<variablelist>
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<varlistentry>
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<term><filename>/var/log/faillog</filename></term>
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<listitem>
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<para>Failure logging file.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id='see_also'>
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<title>SEE ALSO</title>
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<para>
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<citerefentry>
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<refentrytitle>login</refentrytitle><manvolnum>1</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>faillog</refentrytitle><manvolnum>5</manvolnum>
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</citerefentry>.
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</para>
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</refsect1>
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</refentry>
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