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Viewing changes to mandos-clients.conf.xml

  • Committer: Teddy Hogeborn
  • Date: 2019-02-10 03:50:20 UTC
  • Revision ID: teddy@recompile.se-20190210035020-nttr1tybgwwixueu
Show debconf note about new TLS key IDs

If mandos-client did not see TLS keys and had to create them, or if
mandos sees GnuTLS version 3.6.6 or later, show an important notice on
package installation about the importance of adding the new key_id
options to clients.conf on the Mandos server.

* debian/control (Package: mandos, Package: mandos-client): Depend on
                                                            debconf.
* debian/mandos-client.lintian-overrides: Override warnings.
* debian/mandos-client.postinst (create_keys): Show notice if new TLS
                                               key files were created.
* debian/mandos-client.templates: New.
* debian/mandos.lintian-overrides: Override warnings.
* debian/mandos.postinst (configure): If GnuTLS 3.6.6 or later is
                                      detected, show an important
                                      notice (once) about the new
                                      key_id option required in
                                      clients.conf.
* debian/mandos.templates: New.

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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 "2011-11-26">
 
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<!ENTITY TIMESTAMP "2019-02-09">
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<!ENTITY % common SYSTEM "common.ent">
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%common;
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]>
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      <year>2009</year>
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      <year>2010</year>
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      <year>2011</year>
 
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      <year>2012</year>
 
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      <year>2013</year>
 
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      <year>2014</year>
 
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      <year>2015</year>
 
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      <year>2016</year>
 
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      <year>2017</year>
 
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      <year>2018</year>
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      <holder>Teddy Hogeborn</holder>
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      <holder>Björn Påhlsson</holder>
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    </copyright>
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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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    </para>
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    <para>
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      The format starts with a <literal>[<replaceable>section
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          <para>
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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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          </para>
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          <para>
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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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          </para>
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          <para>
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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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            spoofing.
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          </para>
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          <para>
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            In addition to normal start time expansion, this option
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          <para>
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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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            through TLS.  The string needs to be in hexadecimal form,
 
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            but spaces or upper/lower case are not significant.
 
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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>key_id<literal> = </literal
 
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        ><replaceable>HEXSTRING</replaceable></option></term>
 
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        <listitem>
 
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          <para>
 
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            This option is <emphasis>optional</emphasis>.
 
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          </para>
 
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          <para>
 
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            This option sets the certificate key ID 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 hexadecimal form,
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            but spaces or upper/lower case are not significant.
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          </para>
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        </listitem>
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          <para>
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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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          </para>
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          <para>
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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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          </para>
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        </listitem>
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      </varlistentry>
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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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      <literal>%(<replaceable>foo</replaceable>)s</literal> is
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      obscure.
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    </para>
 
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    <xi:include href="bugs.xml"/>
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  </refsect1>
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  <refsect1 id="example">
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    <informalexample>
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      <programlisting>
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[DEFAULT]
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timeout = 5m
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interval = 2m
 
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timeout = PT5M
 
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interval = PT2M
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checker = fping -q -- %%(host)s
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# Client "foo"
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[foo]
 
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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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secret =
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        hQIOA6QdEjBs2L/HEAf/TCyrDe5Xnm9esa+Pb/vWF9CUqfn4srzVgSu234
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        4T2zw4dxS5NswXWU0sVEXxjs6PYxuIiCTL7vdpx8QjBkrPWDrAbcMyBr2O
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        QlnHIvPzEArRQLo=
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host = foo.example.org
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interval = 1m
 
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interval = PT1M
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# Client "bar"
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[bar]
 
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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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timeout = 15m
 
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timeout = PT15M
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approved_by_default = False
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approval_delay = 30s
 
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approval_delay = PT30S
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      </programlisting>
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    </informalexample>
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  </refsect1>
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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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    </para>
 
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    <variablelist>
 
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      <varlistentry>
 
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        <term>
 
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          RFC 3339: <citetitle>Date and Time on the Internet:
 
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          Timestamps</citetitle>
 
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        </term>
 
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      <listitem>
 
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        <para>
 
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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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        </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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</refentry>
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