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Viewing changes to mandos-clients.conf.xml

  • Committer: Teddy Hogeborn
  • Date: 2014-06-22 02:19:30 UTC
  • Revision ID: teddy@recompile.se-20140622021930-icl7h4cm97blhjml
mandos-keygen: Generate "checker" option to use SSH fingerprints.

To turn this off, use a new "--no-ssh" option to mandos-keygen.

* INSTALL (Mandos Server, Mandos Client): Document new suggested
                                          installation of SSH.
* Makefile (confdir/clients.conf): Use new "--no-ssh" option to
                                   "mandos-keygen".
* debian/control (mandos/Depends): Changed to "fping | ssh-client".
  (mandos-client/Recommends): New; set to "ssh".
* intro.xml (FREQUENTLY ASKED QUESTIONS): Rename and rewrite section
                                          called "Faking ping
                                          replies?" to address new
                                          default behavior.
* mandos-clients.conf.xml (OPTIONS/checker): Briefly discuss new
                                             behavior of
                                             mandos-keygen.
* mandos-keygen: Bug fix: Suppress failure output of "shred" to remove
                 "sec*", since no such files may exist.
 (password mode): Scan for SSH key fingerprints and output as new
                  "checker" and "ssh_fingerprint" options, unless new
                  "--no-ssh" option is given.
* mandos-keygen.xml (SYNOPSIS/--force): Bug fix: Document short form.
  (OPTIONS/--no-ssh): New.
  (SEE ALSO): Add reference "ssh-keyscan(1)".
* plugins.d/mandos-client.xml (SECURITY): Briefly mention the
                                          possibility of using SSH key
                                          fingerprints for checking.

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mandos-clients.conf.xml
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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 "2019-02-10">
 
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<!ENTITY TIMESTAMP "2014-06-22">
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<!ENTITY % common SYSTEM "common.ent">
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%common;
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]>
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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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      <year>2019</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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            >--</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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            server on the Mandos client, and, if it find 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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            client’s 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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        ><replaceable>HEXSTRING</replaceable></option></term>
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        <listitem>
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          <para>
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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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          </para>
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          <para>
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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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          </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>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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          </para>
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          <para>
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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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            This option is <emphasis>required</emphasis>.
 
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          </para>
 
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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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            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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          <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 <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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            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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            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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        <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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# 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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# 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 = PT15M