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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY CONFNAME "mandos-clients.conf">
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<!ENTITY CONFPATH "<filename>/etc/mandos/clients.conf</filename>">
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<!ENTITY TIMESTAMP "2011-10-03">
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<!ENTITY TIMESTAMP "2019-02-10">
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<!ENTITY % common SYSTEM "common.ent">
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><refentrytitle>mandos</refentrytitle>
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<manvolnum>8</manvolnum></citerefentry>, read by it at startup.
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The file needs to list all clients that should be able to use
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the service. All clients listed will be regarded as enabled,
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even if a client was disabled in a previous run of the server.
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the service. The settings in this file can be overridden by
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runtime changes to the server, which it saves across restarts.
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(See the section called <quote>PERSISTENT STATE</quote> in
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<citerefentry><refentrytitle>mandos</refentrytitle><manvolnum
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>8</manvolnum></citerefentry>.) However, any <emphasis
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>changes</emphasis> to this file (including adding and removing
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clients) will, at startup, override changes done during runtime.
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The format starts with a <literal>[<replaceable>section
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How long to wait for external approval before resorting to
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use the <option>approved_by_default</option> value. The
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default is <quote>0s</quote>, i.e. not to wait.
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default is <quote>PT0S</quote>, i.e. not to wait.
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The format of <replaceable>TIME</replaceable> is the same
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This option is <emphasis>optional</emphasis>.
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This option allows you to override the default shell
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command that the server will use to check if the client is
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still up. Any output of the command will be ignored, only
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the exit code is checked: If the exit code of the command
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is zero, the client is considered up. The command will be
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run using <quote><command><filename>/bin/sh</filename>
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This option overrides the default shell command that the
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server will use to check if the client is still up. Any
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output of the command will be ignored, only the exit code
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is checked: If the exit code of the command is zero, the
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client is considered up. The command will be run using
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<quote><command><filename>/bin/sh</filename>
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<option>-c</option></command></quote>, so
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<varname>PATH</varname> will be searched. The default
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value for the checker command is <quote><literal
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><command>fping</command> <option>-q</option> <option
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>--</option> %%(host)s</literal></quote>.
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>--</option> %%(host)s</literal></quote>. Note that
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<command>mandos-keygen</command>, when generating output
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to be inserted into this file, normally looks for an SSH
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server on the Mandos client, and, if it finds one, outputs
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a <option>checker</option> option to check for the
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client’s SSH key fingerprint – this is more secure against
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In addition to normal start time expansion, this option
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Extended timeout is an added timeout that is given once
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after a password has been sent sucessfully to a client.
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after a password has been sent successfully to a client.
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The timeout is by default longer than the normal timeout,
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and is used for handling the extra long downtime while a
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machine is booting up. Time to take into consideration
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><replaceable>HEXSTRING</replaceable></option></term>
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This option is <emphasis>required</emphasis>.
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This option sets the OpenPGP fingerprint that identifies
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the public key that clients authenticate themselves with
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through TLS. The string needs to be in hexidecimal form,
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but spaces or upper/lower case are not significant.
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This option is <emphasis>required</emphasis> if the
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<option>key_id</option> is not set, and
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<emphasis>optional</emphasis> otherwise.
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This option sets the OpenPGP fingerprint that (before
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GnuTLS 3.6.0) identified the public key that clients
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authenticate themselves with through TLS. The string
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needs to be in hexadecimal form, but spaces or upper/lower
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case are not significant.
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<term><option>key_id<literal> = </literal
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><replaceable>HEXSTRING</replaceable></option></term>
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This option is <emphasis>required</emphasis> if the
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<option>fingerprint</option> is not set, and
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<emphasis>optional</emphasis> otherwise.
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This option sets the certificate key ID that (with GnuTLS
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3.6.6 or later) identifies the public key that clients
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authenticate themselves with through TLS. The string
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needs to be in hexadecimal form, but spaces or upper/lower
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case are not significant.
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If present, this option must be set to a string of
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base64-encoded binary data. It will be decoded and sent
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to the client matching the above
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<option>fingerprint</option>. This should, of course, be
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OpenPGP encrypted data, decryptable only by the client.
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to the client matching the above <option>key_id</option>
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or <option>fingerprint</option>. This should, of course,
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be OpenPGP encrypted data, decryptable only by the client.
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The program <citerefentry><refentrytitle><command
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>mandos-keygen</command></refentrytitle><manvolnum
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>8</manvolnum></citerefentry> can, using its
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<option>extended_timeout</option> option.
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The <replaceable>TIME</replaceable> is specified as a
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space-separated number of values, each of which is a
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number and a one-character suffix. The suffix must be one
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of <quote>d</quote>, <quote>s</quote>, <quote>m</quote>,
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<quote>h</quote>, and <quote>w</quote> for days, seconds,
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minutes, hours, and weeks, respectively. The values are
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added together to give the total time value, so all of
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<quote><literal>330s</literal></quote>,
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<quote><literal>110s 110s 110s</literal></quote>, and
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<quote><literal>5m 30s</literal></quote> will give a value
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of five minutes and thirty seconds.
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The <replaceable>TIME</replaceable> is specified as an RFC
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3339 duration; for example
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<quote><literal>P1Y2M3DT4H5M6S</literal></quote> meaning
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one year, two months, three days, four hours, five
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minutes, and six seconds. Some values can be omitted, see
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RFC 3339 Appendix A for details.
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<term><option>enabled<literal> = </literal>{ <literal
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>1</literal> | <literal>yes</literal> | <literal>true</literal
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> | <literal >on</literal> | <literal>0</literal> | <literal
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>no</literal> | <literal>false</literal> | <literal
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>off</literal> }</option></term>
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Whether this client should be enabled by default. The
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default is <quote>true</quote>.
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<quote><literal>approval_duration</literal></quote>,
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<quote><literal>created</literal></quote>,
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<quote><literal>enabled</literal></quote>,
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<quote><literal>expires</literal></quote>,
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<quote><literal>key_id</literal></quote>,
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<quote><literal>fingerprint</literal></quote>,
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<quote><literal>host</literal></quote>,
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<quote><literal>interval</literal></quote>,
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<informalexample>
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checker = fping -q -- %%(host)s
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key_id = 788cd77115cd0bb7b2d5e0ae8496f6b48149d5e712c652076b1fd2d957ef7c1f
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fingerprint = 7788 2722 5BA7 DE53 9C5A 7CFA 59CF F7CD BD9A 5920
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hQIOA6QdEjBs2L/HEAf/TCyrDe5Xnm9esa+Pb/vWF9CUqfn4srzVgSu234
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4T2zw4dxS5NswXWU0sVEXxjs6PYxuIiCTL7vdpx8QjBkrPWDrAbcMyBr2O
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host = foo.example.org
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key_id = F90C7A81D72D1EA69A51031A91FF8885F36C8B46D155C8C58709A4C99AE9E361
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fingerprint = 3e393aeaefb84c7e89e2f547b3a107558fca3a27
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secfile = /etc/mandos/bar-secret
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approved_by_default = False
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approval_delay = PT30S
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</programlisting>
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</informalexample>
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<citerefentry><refentrytitle>mandos.conf</refentrytitle>
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<manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>mandos</refentrytitle>
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<manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>fping</refentrytitle>
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<manvolnum>8</manvolnum></citerefentry>
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RFC 3339: <citetitle>Date and Time on the Internet:
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Timestamps</citetitle>
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The time intervals are in the "duration" format, as
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specified in ABNF in Appendix A of RFC 3339.
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