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Viewing changes to plugins.d/password-request.xml

  • Committer: Teddy Hogeborn
  • Date: 2008-09-03 17:11:32 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080903171132-usevhlf0gi9rxqc3
* plugins.d/password-request.c (init_gnutls_global): Improved wording
                                                     in debug message.
                                                     Bug fix: Make
                                                     debug message
                                                     print to stderr,
                                                     not stdout.

* plugins.d/password-request.xml (SECURITY): Add text.

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removed removed

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plugins.d/password-request.xml
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        "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY VERSION "1.0">
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<!ENTITY COMMANDNAME "password-request">
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<!ENTITY TIMESTAMP "2008-09-04">
 
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<!ENTITY TIMESTAMP "2008-09-03">
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]>
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<refentry xmlns:xi="http://www.w3.org/2001/XInclude">
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      <command>&COMMANDNAME;</command>
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      <group>
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        <arg choice="plain"><option>--connect
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        <replaceable>ADDRESS</replaceable><literal>:</literal
 
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        <replaceable>IPADDR</replaceable><literal>:</literal
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        ><replaceable>PORT</replaceable></option></arg>
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        <arg choice="plain"><option>-c
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        <replaceable>ADDRESS</replaceable><literal>:</literal
 
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        <replaceable>IPADDR</replaceable><literal>:</literal
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        ><replaceable>PORT</replaceable></option></arg>
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      </group>
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      <sbr/>
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      <group>
 
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        <arg choice="plain"><option>--keydir
 
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        <replaceable>DIRECTORY</replaceable></option></arg>
 
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        <arg choice="plain"><option>-d
 
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        <replaceable>DIRECTORY</replaceable></option></arg>
 
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      </group>
 
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      <sbr/>
 
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      <group>
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        <arg choice="plain"><option>--interface
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        <replaceable>NAME</replaceable></option></arg>
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        <arg choice="plain"><option>-i
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      network connectivity, Zeroconf to find servers, and TLS with an
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      OpenPGP key to ensure authenticity and confidentiality.  It
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      keeps running, trying all servers on the network, until it
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      receives a satisfactory reply or a TERM signal is received.
 
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      receives a satisfactory reply or a TERM signal is recieved.
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    </para>
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    <para>
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      This program is not meant to be run directly; it is really meant
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      </varlistentry>
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      <varlistentry>
 
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        <term><option>--keydir=<replaceable
 
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        >DIRECTORY</replaceable></option></term>
 
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        <term><option>-d
 
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        <replaceable>DIRECTORY</replaceable></option></term>
 
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        <listitem>
 
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          <para>
 
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            Directory to read the OpenPGP key files
 
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            <filename>pubkey.txt</filename> and
 
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            <filename>seckey.txt</filename> from.  The default is
 
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            <filename>/conf/conf.d/mandos</filename> (in the initial
 
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            <acronym>RAM</acronym> disk environment).
 
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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>--interface=
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        <replaceable>NAME</replaceable></option></term>
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        <term><option>-i
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        <replaceable>FILE</replaceable></option></term>
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        <listitem>
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          <para>
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            OpenPGP public key file name.  The default name is
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            <quote><filename>/conf/conf.d/mandos/pubkey.txt</filename
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            ></quote>.
 
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            OpenPGP public key file base name.  This will be combined
 
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            with the directory from the <option>--keydir</option>
 
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            option to form an absolute file name.  The default name is
 
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            <quote><literal>pubkey.txt</literal></quote>.
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          </para>
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        </listitem>
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      </varlistentry>
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        <replaceable>FILE</replaceable></option></term>
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        <listitem>
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          <para>
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            OpenPGP secret key file name.  The default name is
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            <quote><filename>/conf/conf.d/mandos/seckey.txt</filename
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            ></quote>.
 
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            OpenPGP secret key file base name.  This will be combined
 
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            with the directory from the <option>--keydir</option>
 
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            option to form an absolute file name.  The default name is
 
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            <quote><literal>seckey.txt</literal></quote>.
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          </para>
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        </listitem>
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      </varlistentry>
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      <filename>/etc/crypttab</filename>, but it would then be
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      impossible to enter a password for the encrypted root disk at
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      the console, since this program does not read from the console
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      at all.  This is why a separate plugin (<citerefentry>
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      <refentrytitle>password-prompt</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>) does that, which
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      will be run in parallel to this one by the plugin runner.
 
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      at all.  This is why a separate plugin does that, which will be
 
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      run in parallell to this one by the plugin runner.
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    </para>
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  </refsect1>
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    </informalexample>
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    <informalexample>
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      <para>
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        Search for Mandos servers (and connect to them) using another
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        interface:
 
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        Search for Mandos servers on another interface:
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      </para>
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      <para>
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        <!-- do not wrap this line -->
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    </informalexample>
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    <informalexample>
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      <para>
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        Run in debug mode, and use a custom key:
 
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        Run in debug mode, and use a custom key directory:
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      </para>
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      <para>
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<!-- do not wrap this line -->
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<userinput>&COMMANDNAME; --debug --pubkey keydir/pubkey.txt --seckey keydir/seckey.txt</userinput>
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        <!-- do not wrap this line -->
 
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        <userinput>&COMMANDNAME; --debug --keydir keydir</userinput>
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      </para>
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    </informalexample>
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    <informalexample>
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      <para>
410
 
        Run in debug mode, with a custom key, and do not use Zeroconf
411
 
        to locate a server; connect directly to the IPv6 address
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        <quote><systemitem class="ipaddress"
 
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        Run in debug mode, with a custom key directory, and do not use
 
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        Zeroconf to locate a server; connect directly to the IPv6
 
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        address <quote><systemitem class="ipaddress"
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        >2001:db8:f983:bd0b:30de:ae4a:71f2:f672</systemitem></quote>,
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        port 4711, using interface eth2:
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      </para>
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      <para>
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<!-- do not wrap this line -->
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<userinput>&COMMANDNAME; --debug --pubkey keydir/pubkey.txt --seckey keydir/seckey.txt --connect 2001:db8:f983:bd0b:30de:ae4a:71f2:f672:4711 --interface eth2</userinput>
 
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<userinput>&COMMANDNAME; --debug --keydir keydir --connect 2001:db8:f983:bd0b:30de:ae4a:71f2:f672:4711 --interface eth2</userinput>
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      </para>
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    </informalexample>
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    <title>SECURITY</title>
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    <para>
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      This program is set-uid to root, but will switch back to the
429
 
      original (and presumably non-privileged) user and group after
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      bringing up the network interface.
 
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      original user and group after bringing up the network interface.
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    </para>
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    <para>
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      To use this program for its intended purpose (see <xref
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      >mandos</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
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    </para>
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    <para>
458
 
      It will also help if the checker program on the server is
459
 
      configured to request something from the client which can not be
460
 
      spoofed by someone else on the network, unlike unencrypted
461
 
      <acronym>ICMP</acronym> echo (<quote>ping</quote>) replies.
462
 
    </para>
463
 
    <para>
464
 
      <emphasis>Note</emphasis>: This makes it completely insecure to
465
 
      have <application >Mandos</application> clients which dual-boot
466
 
      to another operating system which is <emphasis>not</emphasis>
467
 
      trusted to keep the initial <acronym>RAM</acronym> disk image
468
 
      confidential.
 
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      <emphasis>Note</emphasis>: This makes it impossible to have
 
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      <application >Mandos</application> clients which dual-boot to
 
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      another operating system which does <emphasis>not</emphasis> run
 
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      a <application>Mandos</application> client.
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    </para>
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  </refsect1>
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472
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  <refsect1 id="see_also">
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    <title>SEE ALSO</title>
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    <para>
475
 
      <citerefentry><refentrytitle>cryptsetup</refentrytitle>
476
 
      <manvolnum>8</manvolnum></citerefentry>,
477
 
      <citerefentry><refentrytitle>crypttab</refentrytitle>
478
 
      <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>password-prompt</refentrytitle>
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      <citerefentry><refentrytitle>plugin-runner</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>
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    </para>
486
 
    <variablelist>
487
 
      <varlistentry>
488
 
        <term>
489
 
          <ulink url="http://www.zeroconf.org/">Zeroconf</ulink>
490
 
        </term>
491
 
        <listitem>
492
 
          <para>
493
 
            Zeroconf is the network protocol standard used for finding
494
 
            Mandos servers on the local network.
495
 
          </para>
496
 
        </listitem>
497
 
      </varlistentry>
498
 
      <varlistentry>
499
 
        <term>
500
 
          <ulink url="http://www.avahi.org/">Avahi</ulink>
501
 
        </term>
502
 
      <listitem>
503
 
        <para>
504
 
          Avahi is the library this program calls to find Zeroconf
505
 
          services.
506
 
        </para>
507
 
      </listitem>
508
 
      </varlistentry>
509
 
      <varlistentry>
510
 
        <term>
511
 
          <ulink url="http://www.gnu.org/software/gnutls/"
512
 
          >GnuTLS</ulink>
513
 
        </term>
514
 
      <listitem>
515
 
        <para>
516
 
          GnuTLS is the library this client uses to implement TLS for
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          communicating securely with the server, and at the same time
518
 
          send the public OpenPGP key to the server.
519
 
        </para>
520
 
      </listitem>
521
 
      </varlistentry>
522
 
      <varlistentry>
523
 
        <term>
524
 
          <ulink url="http://www.gnupg.org/related_software/gpgme/"
525
 
                 >GPGME</ulink>
526
 
        </term>
527
 
        <listitem>
528
 
          <para>
529
 
            GPGME is the library used to decrypt the OpenPGP data sent
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            by the server.
531
 
          </para>
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        </listitem>
533
 
      </varlistentry>
534
 
      <varlistentry>
535
 
        <term>
536
 
          RFC 4291: <citetitle>IP Version 6 Addressing
537
 
          Architecture</citetitle>
538
 
        </term>
539
 
        <listitem>
540
 
          <variablelist>
541
 
            <varlistentry>
542
 
              <term>Section 2.2: <citetitle>Text Representation of
543
 
              Addresses</citetitle></term>
544
 
              <listitem><para/></listitem>
545
 
            </varlistentry>
546
 
            <varlistentry>
547
 
              <term>Section 2.5.5.2: <citetitle>IPv4-Mapped IPv6
548
 
              Address</citetitle></term>
549
 
              <listitem><para/></listitem>
550
 
            </varlistentry>
551
 
            <varlistentry>
552
 
            <term>Section 2.5.6, <citetitle>Link-Local IPv6 Unicast
553
 
            Addresses</citetitle></term>
554
 
            <listitem>
555
 
              <para>
556
 
                This client uses IPv6 link-local addresses, which are
557
 
                immediately usable since a link-local addresses is
558
 
                automatically assigned to a network interfaces when it
559
 
                is brought up.
560
 
              </para>
561
 
            </listitem>
562
 
            </varlistentry>
563
 
          </variablelist>
564
 
        </listitem>
565
 
      </varlistentry>
566
 
      <varlistentry>
567
 
        <term>
568
 
          RFC 4346: <citetitle>The Transport Layer Security (TLS)
569
 
          Protocol Version 1.1</citetitle>
570
 
        </term>
571
 
      <listitem>
572
 
        <para>
573
 
          TLS 1.1 is the protocol implemented by GnuTLS.
574
 
        </para>
575
 
      </listitem>
576
 
      </varlistentry>
577
 
      <varlistentry>
578
 
        <term>
579
 
          RFC 4880: <citetitle>OpenPGP Message Format</citetitle>
580
 
        </term>
581
 
      <listitem>
582
 
        <para>
583
 
          The data received from the server is binary encrypted
584
 
          OpenPGP data.
585
 
        </para>
586
 
      </listitem>
587
 
      </varlistentry>
588
 
      <varlistentry>
589
 
        <term>
590
 
          RFC 5081: <citetitle>Using OpenPGP Keys for Transport Layer
591
 
          Security</citetitle>
592
 
        </term>
593
 
      <listitem>
594
 
        <para>
595
 
          This is implemented by GnuTLS and used by this program so
596
 
          that OpenPGP keys can be used.
597
 
        </para>
598
 
      </listitem>
599
 
      </varlistentry>
600
 
    </variablelist>
 
494
    <itemizedlist>
 
495
      <listitem><para>
 
496
        <ulink url="http://www.zeroconf.org/">Zeroconf</ulink>
 
497
      </para></listitem>
 
498
      
 
499
      <listitem><para>
 
500
        <ulink url="http://www.avahi.org/">Avahi</ulink>
 
501
      </para></listitem>
 
502
      
 
503
      <listitem><para>
 
504
        <ulink
 
505
            url="http://www.gnu.org/software/gnutls/">GnuTLS</ulink>
 
506
      </para></listitem>
 
507
      
 
508
      <listitem><para>
 
509
        <ulink
 
510
        url="http://www.gnupg.org/related_software/gpgme/"
 
511
        >GPGME</ulink>
 
512
      </para></listitem>
 
513
      
 
514
      <listitem><para>
 
515
        <citation>RFC 4880: <citetitle>OpenPGP Message
 
516
        Format</citetitle></citation>
 
517
      </para></listitem>
 
518
      
 
519
      <listitem><para>
 
520
        <citation>RFC 5081: <citetitle>Using OpenPGP Keys for
 
521
        Transport Layer Security</citetitle></citation>
 
522
      </para></listitem>
 
523
      
 
524
      <listitem><para>
 
525
        <citation>RFC 4291: <citetitle>IP Version 6 Addressing
 
526
        Architecture</citetitle>, section 2.5.6, Link-Local IPv6
 
527
        Unicast Addresses</citation>
 
528
      </para></listitem>
 
529
    </itemizedlist>
601
530
  </refsect1>
602
531
 
603
532
</refentry>