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  • Committer: Teddy Hogeborn
  • Date: 2009-02-09 02:01:13 UTC
  • Revision ID: teddy@fukt.bsnet.se-20090209020113-726hq380zvp8zt97
Four new interrelated features:

1. Support using a different network interface via both initramfs.conf
   (the DEVICE setting) and the kernel command line (sixth field of
   the "ip=" option as in Linux' Documentation/nfsroot.txt).

2. Support connecting to a specified Mandos server directly using a
   kernel command line option ("mandos=connect:<ADDRESS>:<PORT>").

3. Support connecting directly to an IPv4 address (and port) using the
   "--connect" option of mandos-client.

4. Support an empty string to the --interface option to mandos-client.

* Makefile (WARN): Increase strictness by changing to
                   "-Wstrict-aliasing=1".

* debian/mandos-client.README.Debian (Use the Correct Network
  Interface): Changed to refer to initramfs.conf and nfsroot.txt.
  (Test the Server): Improve wording.
  (Non-local Connection): New section.
* initramfs-tools-script: Obey DEVICE environment variable and setting
                          from "/conf/initramfs.conf".  Also let any
                          "ip=" kernel command line option override
                          it.  Support new "mandos=connect" option.
                          Call "configure_networking" to set up IP
                          address on interface if necessary.
* plugin-runner.conf: Change example.
* plugins.d/mandos-client.c: Some whitespace and comment changes.
  (start_mandos_communication): Take an additional argument for
                                address family, all callers changed.
                                Connect to an IPv4 address if address
                                family is AF_INET.  Only set IPv6
                                scope_id for link-local addresses.
  (main): Accept empty interface name; this will not bring up any
         interface and leave the interface as unspecified.  Also do
         not restore kernel log level if lowering it failed.
* plugins.d/mandos-client.xml (OPTIONS): Document that the
                                         "--interface" option accepts
                                         an empty string.
  (EXAMPLE): Change example IPv6 address to a link-local address.

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mandos.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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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 "mandos">
 
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<!ENTITY TIMESTAMP "2009-01-04">
 
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<!ENTITY % common SYSTEM "common.ent">
 
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%common;
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]>
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<refentry xmlns:xi="http://www.w3.org/2001/XInclude">
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  <refentryinfo>
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    <title>&COMMANDNAME;</title>
 
11
   <refentryinfo>
 
12
    <title>Mandos Manual</title>
11
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    <!-- NWalsh’s docbook scripts use this to generate the footer: -->
12
 
    <productname>&COMMANDNAME;</productname>
13
 
    <productnumber>&VERSION;</productnumber>
 
14
    <productname>Mandos</productname>
 
15
    <productnumber>&version;</productnumber>
 
16
    <date>&TIMESTAMP;</date>
14
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    <authorgroup>
15
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      <author>
16
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        <firstname>Björn</firstname>
29
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    </authorgroup>
30
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    <copyright>
31
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      <year>2008</year>
 
35
      <year>2009</year>
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      <holder>Teddy Hogeborn</holder>
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      <holder>Björn Påhlsson</holder>
34
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    </copyright>
35
 
    <legalnotice>
36
 
      <para>
37
 
        This manual page is free software: you can redistribute it
38
 
        and/or modify it under the terms of the GNU General Public
39
 
        License as published by the Free Software Foundation,
40
 
        either version 3 of the License, or (at your option) any
41
 
        later version.
42
 
      </para>
43
 
 
44
 
      <para>
45
 
        This manual page is distributed in the hope that it will
46
 
        be useful, but WITHOUT ANY WARRANTY; without even the
47
 
        implied warranty of MERCHANTABILITY or FITNESS FOR A
48
 
        PARTICULAR PURPOSE.  See the GNU General Public License
49
 
        for more details.
50
 
      </para>
51
 
 
52
 
      <para>
53
 
        You should have received a copy of the GNU General Public
54
 
        License along with this program; If not, see
55
 
        <ulink url="http://www.gnu.org/licenses/"/>.
56
 
      </para>
57
 
    </legalnotice>
 
39
    <xi:include href="legalnotice.xml"/>
58
40
  </refentryinfo>
59
 
 
 
41
  
60
42
  <refmeta>
61
43
    <refentrytitle>&COMMANDNAME;</refentrytitle>
62
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    <manvolnum>8</manvolnum>
65
47
  <refnamediv>
66
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    <refname><command>&COMMANDNAME;</command></refname>
67
49
    <refpurpose>
68
 
      Sends encrypted passwords to authenticated Mandos clients
 
50
      Gives encrypted passwords to authenticated Mandos clients
69
51
    </refpurpose>
70
52
  </refnamediv>
71
 
 
 
53
  
72
54
  <refsynopsisdiv>
73
55
    <cmdsynopsis>
74
56
      <command>&COMMANDNAME;</command>
75
 
      <arg>--interface<arg choice="plain">NAME</arg></arg>
76
 
      <arg>--address<arg choice="plain">ADDRESS</arg></arg>
77
 
      <arg>--port<arg choice="plain">PORT</arg></arg>
78
 
      <arg>--priority<arg choice="plain">PRIORITY</arg></arg>
79
 
      <arg>--servicename<arg choice="plain">NAME</arg></arg>
80
 
      <arg>--configdir<arg choice="plain">DIRECTORY</arg></arg>
81
 
      <arg>--debug</arg>
82
 
    </cmdsynopsis>
83
 
    <cmdsynopsis>
84
 
      <command>&COMMANDNAME;</command>
85
 
      <arg>-i<arg choice="plain">NAME</arg></arg>
86
 
      <arg>-a<arg choice="plain">ADDRESS</arg></arg>
87
 
      <arg>-p<arg choice="plain">PORT</arg></arg>
88
 
      <arg>--priority<arg choice="plain">PRIORITY</arg></arg>
89
 
      <arg>--servicename<arg choice="plain">NAME</arg></arg>
90
 
      <arg>--configdir<arg choice="plain">DIRECTORY</arg></arg>
91
 
      <arg>--debug</arg>
 
57
      <group>
 
58
        <arg choice="plain"><option>--interface
 
59
        <replaceable>NAME</replaceable></option></arg>
 
60
        <arg choice="plain"><option>-i
 
61
        <replaceable>NAME</replaceable></option></arg>
 
62
      </group>
 
63
      <sbr/>
 
64
      <group>
 
65
        <arg choice="plain"><option>--address
 
66
        <replaceable>ADDRESS</replaceable></option></arg>
 
67
        <arg choice="plain"><option>-a
 
68
        <replaceable>ADDRESS</replaceable></option></arg>
 
69
      </group>
 
70
      <sbr/>
 
71
      <group>
 
72
        <arg choice="plain"><option>--port
 
73
        <replaceable>PORT</replaceable></option></arg>
 
74
        <arg choice="plain"><option>-p
 
75
        <replaceable>PORT</replaceable></option></arg>
 
76
      </group>
 
77
      <sbr/>
 
78
      <arg><option>--priority
 
79
      <replaceable>PRIORITY</replaceable></option></arg>
 
80
      <sbr/>
 
81
      <arg><option>--servicename
 
82
      <replaceable>NAME</replaceable></option></arg>
 
83
      <sbr/>
 
84
      <arg><option>--configdir
 
85
      <replaceable>DIRECTORY</replaceable></option></arg>
 
86
      <sbr/>
 
87
      <arg><option>--debug</option></arg>
 
88
      <sbr/>
 
89
      <arg><option>--no-dbus</option></arg>
92
90
    </cmdsynopsis>
93
91
    <cmdsynopsis>
94
92
      <command>&COMMANDNAME;</command>
95
93
      <group choice="req">
96
 
        <arg choice="plain">-h</arg>
97
 
        <arg choice="plain">--help</arg>
 
94
        <arg choice="plain"><option>--help</option></arg>
 
95
        <arg choice="plain"><option>-h</option></arg>
98
96
      </group>
99
97
    </cmdsynopsis>
100
98
    <cmdsynopsis>
101
99
      <command>&COMMANDNAME;</command>
102
 
      <arg choice="plain">--version</arg>
 
100
      <arg choice="plain"><option>--version</option></arg>
103
101
    </cmdsynopsis>
104
102
    <cmdsynopsis>
105
103
      <command>&COMMANDNAME;</command>
106
 
      <arg choice="plain">--check</arg>
 
104
      <arg choice="plain"><option>--check</option></arg>
107
105
    </cmdsynopsis>
108
106
  </refsynopsisdiv>
109
 
 
 
107
  
110
108
  <refsect1 id="description">
111
109
    <title>DESCRIPTION</title>
112
110
    <para>
121
119
      Any authenticated client is then given the stored pre-encrypted
122
120
      password for that specific client.
123
121
    </para>
124
 
 
125
122
  </refsect1>
126
123
  
127
124
  <refsect1 id="purpose">
128
125
    <title>PURPOSE</title>
129
 
 
130
126
    <para>
131
127
      The purpose of this is to enable <emphasis>remote and unattended
132
128
      rebooting</emphasis> of client host computer with an
133
129
      <emphasis>encrypted root file system</emphasis>.  See <xref
134
130
      linkend="overview"/> for details.
135
131
    </para>
136
 
 
137
132
  </refsect1>
138
133
  
139
134
  <refsect1 id="options">
140
135
    <title>OPTIONS</title>
141
 
 
142
136
    <variablelist>
143
137
      <varlistentry>
144
 
        <term><literal>-h</literal>, <literal>--help</literal></term>
 
138
        <term><option>--help</option></term>
 
139
        <term><option>-h</option></term>
145
140
        <listitem>
146
141
          <para>
147
142
            Show a help message and exit
148
143
          </para>
149
144
        </listitem>
150
145
      </varlistentry>
151
 
 
 
146
      
152
147
      <varlistentry>
153
 
        <term><literal>-i</literal>, <literal>--interface <replaceable
154
 
        >NAME</replaceable></literal></term>
 
148
        <term><option>--interface</option>
 
149
        <replaceable>NAME</replaceable></term>
 
150
        <term><option>-i</option>
 
151
        <replaceable>NAME</replaceable></term>
155
152
        <listitem>
156
153
          <xi:include href="mandos-options.xml" xpointer="interface"/>
157
154
        </listitem>
158
155
      </varlistentry>
159
 
 
 
156
      
160
157
      <varlistentry>
161
 
        <term><literal>-a</literal>, <literal>--address <replaceable>
162
 
        ADDRESS</replaceable></literal></term>
 
158
        <term><option>--address
 
159
        <replaceable>ADDRESS</replaceable></option></term>
 
160
        <term><option>-a
 
161
        <replaceable>ADDRESS</replaceable></option></term>
163
162
        <listitem>
164
163
          <xi:include href="mandos-options.xml" xpointer="address"/>
165
164
        </listitem>
166
165
      </varlistentry>
167
 
 
 
166
      
168
167
      <varlistentry>
169
 
        <term><literal>-p</literal>, <literal>--port <replaceable>
170
 
        PORT</replaceable></literal></term>
 
168
        <term><option>--port
 
169
        <replaceable>PORT</replaceable></option></term>
 
170
        <term><option>-p
 
171
        <replaceable>PORT</replaceable></option></term>
171
172
        <listitem>
172
173
          <xi:include href="mandos-options.xml" xpointer="port"/>
173
174
        </listitem>
174
175
      </varlistentry>
175
 
 
 
176
      
176
177
      <varlistentry>
177
 
        <term><literal>--check</literal></term>
 
178
        <term><option>--check</option></term>
178
179
        <listitem>
179
180
          <para>
180
181
            Run the server’s self-tests.  This includes any unit
182
183
          </para>
183
184
        </listitem>
184
185
      </varlistentry>
185
 
 
 
186
      
186
187
      <varlistentry>
187
 
        <term><literal>--debug</literal></term>
 
188
        <term><option>--debug</option></term>
188
189
        <listitem>
189
190
          <xi:include href="mandos-options.xml" xpointer="debug"/>
190
191
        </listitem>
191
192
      </varlistentry>
192
 
 
 
193
      
193
194
      <varlistentry>
194
 
        <term><literal>--priority <replaceable>
195
 
        PRIORITY</replaceable></literal></term>
 
195
        <term><option>--priority <replaceable>
 
196
        PRIORITY</replaceable></option></term>
196
197
        <listitem>
197
198
          <xi:include href="mandos-options.xml" xpointer="priority"/>
198
199
        </listitem>
199
200
      </varlistentry>
200
 
 
 
201
      
201
202
      <varlistentry>
202
 
        <term><literal>--servicename <replaceable>NAME</replaceable>
203
 
        </literal></term>
 
203
        <term><option>--servicename
 
204
        <replaceable>NAME</replaceable></option></term>
204
205
        <listitem>
205
206
          <xi:include href="mandos-options.xml"
206
207
                      xpointer="servicename"/>
207
208
        </listitem>
208
209
      </varlistentry>
209
 
 
 
210
      
210
211
      <varlistentry>
211
 
        <term><literal>--configdir <replaceable>DIR</replaceable>
212
 
        </literal></term>
 
212
        <term><option>--configdir
 
213
        <replaceable>DIRECTORY</replaceable></option></term>
213
214
        <listitem>
214
215
          <para>
215
216
            Directory to search for configuration files.  Default is
221
222
          </para>
222
223
        </listitem>
223
224
      </varlistentry>
224
 
 
 
225
      
225
226
      <varlistentry>
226
 
        <term><literal>--version</literal></term>
 
227
        <term><option>--version</option></term>
227
228
        <listitem>
228
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          <para>
229
230
            Prints the program version and exit.
230
231
          </para>
231
232
        </listitem>
232
233
      </varlistentry>
 
234
      
 
235
      <varlistentry>
 
236
        <term><option>--no-dbus</option></term>
 
237
        <listitem>
 
238
          <xi:include href="mandos-options.xml" xpointer="dbus"/>
 
239
          <para>
 
240
            See also <xref linkend="dbus_interface"/>.
 
241
          </para>
 
242
        </listitem>
 
243
      </varlistentry>
233
244
    </variablelist>
234
245
  </refsect1>
235
 
 
 
246
  
236
247
  <refsect1 id="overview">
237
248
    <title>OVERVIEW</title>
238
249
    <xi:include href="overview.xml"/>
239
250
    <para>
240
251
      This program is the server part.  It is a normal server program
241
252
      and will run in a normal system environment, not in an initial
242
 
      RAM disk environment.
 
253
      <acronym>RAM</acronym> disk environment.
243
254
    </para>
244
255
  </refsect1>
245
 
 
 
256
  
246
257
  <refsect1 id="protocol">
247
258
    <title>NETWORK PROTOCOL</title>
248
259
    <para>
300
311
      </row>
301
312
    </tbody></tgroup></table>
302
313
  </refsect1>
303
 
 
 
314
  
304
315
  <refsect1 id="checking">
305
316
    <title>CHECKING</title>
306
317
    <para>
314
325
      <manvolnum>5</manvolnum></citerefentry>.
315
326
    </para>
316
327
  </refsect1>
317
 
 
 
328
  
318
329
  <refsect1 id="logging">
319
330
    <title>LOGGING</title>
320
331
    <para>
324
335
      and also show them on the console.
325
336
    </para>
326
337
  </refsect1>
 
338
  
 
339
  <refsect1 id="dbus_interface">
 
340
    <title>D-BUS INTERFACE</title>
 
341
    <para>
 
342
      The server will by default provide a D-Bus system bus interface.
 
343
      This interface will only be accessible by the root user or a
 
344
      Mandos-specific user, if such a user exists.
 
345
      <!-- XXX -->
 
346
    </para>
 
347
  </refsect1>
327
348
 
328
349
  <refsect1 id="exit_status">
329
350
    <title>EXIT STATUS</title>
332
353
      critical error is encountered.
333
354
    </para>
334
355
  </refsect1>
335
 
 
 
356
  
336
357
  <refsect1 id="environment">
337
358
    <title>ENVIRONMENT</title>
338
359
    <variablelist>
339
360
      <varlistentry>
340
 
        <term><varname>PATH</varname></term>
 
361
        <term><envar>PATH</envar></term>
341
362
        <listitem>
342
363
          <para>
343
364
            To start the configured checker (see <xref
352
373
      </varlistentry>
353
374
    </variablelist>
354
375
  </refsect1>
355
 
 
356
 
  <refsect1 id="file">
 
376
  
 
377
  <refsect1 id="files">
357
378
    <title>FILES</title>
358
379
    <para>
359
380
      Use the <option>--configdir</option> option to change where
382
403
        </listitem>
383
404
      </varlistentry>
384
405
      <varlistentry>
385
 
        <term><filename>/var/run/mandos/mandos.pid</filename></term>
 
406
        <term><filename>/var/run/mandos.pid</filename></term>
386
407
        <listitem>
387
408
          <para>
388
409
            The file containing the process id of
423
444
      Currently, if a client is declared <quote>invalid</quote> due to
424
445
      having timed out, the server does not record this fact onto
425
446
      permanent storage.  This has some security implications, see
426
 
      <xref linkend="CLIENTS"/>.
 
447
      <xref linkend="clients"/>.
427
448
    </para>
428
449
    <para>
429
450
      There is currently no way of querying the server of the current
437
458
      Debug mode is conflated with running in the foreground.
438
459
    </para>
439
460
    <para>
440
 
      The console log messages does not show a timestamp.
 
461
      The console log messages does not show a time stamp.
 
462
    </para>
 
463
    <para>
 
464
      This server does not check the expire time of clients’ OpenPGP
 
465
      keys.
441
466
    </para>
442
467
  </refsect1>
443
468
  
448
473
        Normal invocation needs no options:
449
474
      </para>
450
475
      <para>
451
 
        <userinput>mandos</userinput>
 
476
        <userinput>&COMMANDNAME;</userinput>
452
477
      </para>
453
478
    </informalexample>
454
479
    <informalexample>
461
486
      <para>
462
487
 
463
488
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464
 
<userinput>mandos --debug --configdir ~/mandos --servicename Test</userinput>
 
489
<userinput>&COMMANDNAME; --debug --configdir ~/mandos --servicename Test</userinput>
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      </para>
467
492
    </informalexample>
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      <para>
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475
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476
 
<userinput>mandos --interface eth7 --address fe80::aede:48ff:fe71:f6f2</userinput>
 
501
<userinput>&COMMANDNAME; --interface eth7 --address fe80::aede:48ff:fe71:f6f2</userinput>
477
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478
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      </para>
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    </informalexample>
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  </refsect1>
481
 
 
 
506
  
482
507
  <refsect1 id="security">
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    <title>SECURITY</title>
484
 
    <refsect2 id="SERVER">
 
509
    <refsect2 id="server">
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      <title>SERVER</title>
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      <para>
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        Running this <command>&COMMANDNAME;</command> server program
488
513
        should not in itself present any security risk to the host
489
 
        computer running it.  The program does not need any special
490
 
        privileges to run, and is designed to run as a non-root user.
 
514
        computer running it.  The program switches to a non-root user
 
515
        soon after startup.
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      </para>
492
517
    </refsect2>
493
 
    <refsect2 id="CLIENTS">
 
518
    <refsect2 id="clients">
494
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      <title>CLIENTS</title>
495
520
      <para>
496
521
        The server only gives out its stored data to clients which
503
528
        <citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
504
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        <manvolnum>5</manvolnum></citerefentry>)
505
530
        <emphasis>must</emphasis> be made non-readable by anyone
506
 
        except the user running the server.
 
531
        except the user starting the server (usually root).
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532
      </para>
508
533
      <para>
509
534
        As detailed in <xref linkend="checking"/>, the status of all
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545
        restarting servers if it is suspected that a client has, in
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546
        fact, been compromised by parties who may now be running a
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547
        fake Mandos client with the keys from the non-encrypted
523
 
        initial RAM image of the client host.  What should be done in
524
 
        that case (if restarting the server program really is
525
 
        necessary) is to stop the server program, edit the
 
548
        initial <acronym>RAM</acronym> image of the client host.  What
 
549
        should be done in that case (if restarting the server program
 
550
        really is necessary) is to stop the server program, edit the
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551
        configuration file to omit any suspect clients, and restart
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552
        the server program.
528
553
      </para>
529
554
      <para>
530
555
        For more details on client-side security, see
531
 
        <citerefentry><refentrytitle>password-request</refentrytitle>
 
556
        <citerefentry><refentrytitle>mandos-client</refentrytitle>
532
557
        <manvolnum>8mandos</manvolnum></citerefentry>.
533
558
      </para>
534
559
    </refsect2>
535
560
  </refsect1>
536
 
 
 
561
  
537
562
  <refsect1 id="see_also">
538
563
    <title>SEE ALSO</title>
539
564
    <para>
540
565
      <citerefentry>
 
566
        <refentrytitle>mandos-clients.conf</refentrytitle>
 
567
        <manvolnum>5</manvolnum></citerefentry>, <citerefentry>
541
568
        <refentrytitle>mandos.conf</refentrytitle>
542
569
        <manvolnum>5</manvolnum></citerefentry>, <citerefentry>
543
 
        <refentrytitle>mandos-clients.conf</refentrytitle>
544
 
        <manvolnum>5</manvolnum></citerefentry>, <citerefentry>
545
 
        <refentrytitle>password-request</refentrytitle>
 
570
        <refentrytitle>mandos-client</refentrytitle>
546
571
        <manvolnum>8mandos</manvolnum></citerefentry>, <citerefentry>
547
572
        <refentrytitle>sh</refentrytitle><manvolnum>1</manvolnum>
548
573
      </citerefentry>
651
676
    </variablelist>
652
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  </refsect1>
653
678
</refentry>
 
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