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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 "2008-08-29">
 
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<!ENTITY TIMESTAMP "2009-09-17">
 
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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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   <refentryinfo>
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    <title>Mandos Manual</title>
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    <!-- NWalsh’s docbook scripts use this to generate the footer: -->
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    <productname>Mandos</productname>
14
 
    <productnumber>&VERSION;</productnumber>
 
15
    <productnumber>&version;</productnumber>
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    <date>&TIMESTAMP;</date>
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    <authorgroup>
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      <author>
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    </authorgroup>
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    <copyright>
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      <year>2008</year>
 
35
      <year>2009</year>
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      <holder>Teddy Hogeborn</holder>
35
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      <holder>Björn Påhlsson</holder>
36
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    </copyright>
37
 
    <legalnotice>
38
 
      <para>
39
 
        This manual page is free software: you can redistribute it
40
 
        and/or modify it under the terms of the GNU General Public
41
 
        License as published by the Free Software Foundation,
42
 
        either version 3 of the License, or (at your option) any
43
 
        later version.
44
 
      </para>
45
 
 
46
 
      <para>
47
 
        This manual page is distributed in the hope that it will
48
 
        be useful, but WITHOUT ANY WARRANTY; without even the
49
 
        implied warranty of MERCHANTABILITY or FITNESS FOR A
50
 
        PARTICULAR PURPOSE.  See the GNU General Public License
51
 
        for more details.
52
 
      </para>
53
 
 
54
 
      <para>
55
 
        You should have received a copy of the GNU General Public
56
 
        License along with this program; If not, see
57
 
        <ulink url="http://www.gnu.org/licenses/"/>.
58
 
      </para>
59
 
    </legalnotice>
 
39
    <xi:include href="legalnotice.xml"/>
60
40
  </refentryinfo>
61
 
 
 
41
  
62
42
  <refmeta>
63
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    <refentrytitle>&COMMANDNAME;</refentrytitle>
64
44
    <manvolnum>8</manvolnum>
67
47
  <refnamediv>
68
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    <refname><command>&COMMANDNAME;</command></refname>
69
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    <refpurpose>
70
 
      Sends encrypted passwords to authenticated Mandos clients
 
50
      Gives encrypted passwords to authenticated Mandos clients
71
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    </refpurpose>
72
52
  </refnamediv>
73
 
 
 
53
  
74
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  <refsynopsisdiv>
75
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    <cmdsynopsis>
76
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      <command>&COMMANDNAME;</command>
77
 
      <arg>--interface<arg choice="plain">NAME</arg></arg>
78
 
      <arg>--address<arg choice="plain">ADDRESS</arg></arg>
79
 
      <arg>--port<arg choice="plain">PORT</arg></arg>
80
 
      <arg>--priority<arg choice="plain">PRIORITY</arg></arg>
81
 
      <arg>--servicename<arg choice="plain">NAME</arg></arg>
82
 
      <arg>--configdir<arg choice="plain">DIRECTORY</arg></arg>
83
 
      <arg>--debug</arg>
84
 
    </cmdsynopsis>
85
 
    <cmdsynopsis>
86
 
      <command>&COMMANDNAME;</command>
87
 
      <arg>-i<arg choice="plain">NAME</arg></arg>
88
 
      <arg>-a<arg choice="plain">ADDRESS</arg></arg>
89
 
      <arg>-p<arg choice="plain">PORT</arg></arg>
90
 
      <arg>--priority<arg choice="plain">PRIORITY</arg></arg>
91
 
      <arg>--servicename<arg choice="plain">NAME</arg></arg>
92
 
      <arg>--configdir<arg choice="plain">DIRECTORY</arg></arg>
93
 
      <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-ipv6</option></arg>
94
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    </cmdsynopsis>
95
91
    <cmdsynopsis>
96
92
      <command>&COMMANDNAME;</command>
97
93
      <group choice="req">
98
 
        <arg choice="plain">-h</arg>
99
 
        <arg choice="plain">--help</arg>
 
94
        <arg choice="plain"><option>--help</option></arg>
 
95
        <arg choice="plain"><option>-h</option></arg>
100
96
      </group>
101
97
    </cmdsynopsis>
102
98
    <cmdsynopsis>
103
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      <command>&COMMANDNAME;</command>
104
 
      <arg choice="plain">--version</arg>
 
100
      <arg choice="plain"><option>--version</option></arg>
105
101
    </cmdsynopsis>
106
102
    <cmdsynopsis>
107
103
      <command>&COMMANDNAME;</command>
108
 
      <arg choice="plain">--check</arg>
 
104
      <arg choice="plain"><option>--check</option></arg>
109
105
    </cmdsynopsis>
110
106
  </refsynopsisdiv>
111
 
 
 
107
  
112
108
  <refsect1 id="description">
113
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    <title>DESCRIPTION</title>
114
110
    <para>
123
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      Any authenticated client is then given the stored pre-encrypted
124
120
      password for that specific client.
125
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    </para>
126
 
 
127
122
  </refsect1>
128
123
  
129
124
  <refsect1 id="purpose">
130
125
    <title>PURPOSE</title>
131
 
 
132
126
    <para>
133
127
      The purpose of this is to enable <emphasis>remote and unattended
134
128
      rebooting</emphasis> of client host computer with an
135
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      <emphasis>encrypted root file system</emphasis>.  See <xref
136
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      linkend="overview"/> for details.
137
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    </para>
138
 
 
139
132
  </refsect1>
140
133
  
141
134
  <refsect1 id="options">
142
135
    <title>OPTIONS</title>
143
 
 
144
136
    <variablelist>
145
137
      <varlistentry>
 
138
        <term><option>--help</option></term>
146
139
        <term><option>-h</option></term>
147
 
        <term><option>--help</option></term>
148
140
        <listitem>
149
141
          <para>
150
142
            Show a help message and exit
151
143
          </para>
152
144
        </listitem>
153
145
      </varlistentry>
154
 
 
 
146
      
155
147
      <varlistentry>
 
148
        <term><option>--interface</option>
 
149
        <replaceable>NAME</replaceable></term>
156
150
        <term><option>-i</option>
157
151
        <replaceable>NAME</replaceable></term>
158
 
        <term><option>--interface</option>
159
 
        <replaceable>NAME</replaceable></term>
160
152
        <listitem>
161
153
          <xi:include href="mandos-options.xml" xpointer="interface"/>
162
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        </listitem>
163
155
      </varlistentry>
164
 
 
 
156
      
165
157
      <varlistentry>
166
 
        <term><literal>-a</literal>, <literal>--address <replaceable>
167
 
        ADDRESS</replaceable></literal></term>
 
158
        <term><option>--address
 
159
        <replaceable>ADDRESS</replaceable></option></term>
 
160
        <term><option>-a
 
161
        <replaceable>ADDRESS</replaceable></option></term>
168
162
        <listitem>
169
163
          <xi:include href="mandos-options.xml" xpointer="address"/>
170
164
        </listitem>
171
165
      </varlistentry>
172
 
 
 
166
      
173
167
      <varlistentry>
174
 
        <term><literal>-p</literal>, <literal>--port <replaceable>
175
 
        PORT</replaceable></literal></term>
 
168
        <term><option>--port
 
169
        <replaceable>PORT</replaceable></option></term>
 
170
        <term><option>-p
 
171
        <replaceable>PORT</replaceable></option></term>
176
172
        <listitem>
177
173
          <xi:include href="mandos-options.xml" xpointer="port"/>
178
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        </listitem>
179
175
      </varlistentry>
180
 
 
 
176
      
181
177
      <varlistentry>
182
 
        <term><literal>--check</literal></term>
 
178
        <term><option>--check</option></term>
183
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        <listitem>
184
180
          <para>
185
181
            Run the server’s self-tests.  This includes any unit
187
183
          </para>
188
184
        </listitem>
189
185
      </varlistentry>
190
 
 
 
186
      
191
187
      <varlistentry>
192
 
        <term><literal>--debug</literal></term>
 
188
        <term><option>--debug</option></term>
193
189
        <listitem>
194
190
          <xi:include href="mandos-options.xml" xpointer="debug"/>
195
191
        </listitem>
196
192
      </varlistentry>
197
 
 
 
193
      
198
194
      <varlistentry>
199
 
        <term><literal>--priority <replaceable>
200
 
        PRIORITY</replaceable></literal></term>
 
195
        <term><option>--priority <replaceable>
 
196
        PRIORITY</replaceable></option></term>
201
197
        <listitem>
202
198
          <xi:include href="mandos-options.xml" xpointer="priority"/>
203
199
        </listitem>
204
200
      </varlistentry>
205
 
 
 
201
      
206
202
      <varlistentry>
207
 
        <term><literal>--servicename <replaceable>NAME</replaceable>
208
 
        </literal></term>
 
203
        <term><option>--servicename
 
204
        <replaceable>NAME</replaceable></option></term>
209
205
        <listitem>
210
206
          <xi:include href="mandos-options.xml"
211
207
                      xpointer="servicename"/>
212
208
        </listitem>
213
209
      </varlistentry>
214
 
 
 
210
      
215
211
      <varlistentry>
216
 
        <term><literal>--configdir <replaceable>DIR</replaceable>
217
 
        </literal></term>
 
212
        <term><option>--configdir
 
213
        <replaceable>DIRECTORY</replaceable></option></term>
218
214
        <listitem>
219
215
          <para>
220
216
            Directory to search for configuration files.  Default is
226
222
          </para>
227
223
        </listitem>
228
224
      </varlistentry>
229
 
 
 
225
      
230
226
      <varlistentry>
231
 
        <term><literal>--version</literal></term>
 
227
        <term><option>--version</option></term>
232
228
        <listitem>
233
229
          <para>
234
230
            Prints the program version and exit.
235
231
          </para>
236
232
        </listitem>
237
233
      </varlistentry>
 
234
      
 
235
      <varlistentry>
 
236
        <term><option>--no-ipv6</option></term>
 
237
        <listitem>
 
238
          <xi:include href="mandos-options.xml" xpointer="ipv6"/>
 
239
        </listitem>
 
240
      </varlistentry>
238
241
    </variablelist>
239
242
  </refsect1>
240
 
 
 
243
  
241
244
  <refsect1 id="overview">
242
245
    <title>OVERVIEW</title>
243
246
    <xi:include href="overview.xml"/>
244
247
    <para>
245
248
      This program is the server part.  It is a normal server program
246
249
      and will run in a normal system environment, not in an initial
247
 
      RAM disk environment.
 
250
      <acronym>RAM</acronym> disk environment.
248
251
    </para>
249
252
  </refsect1>
250
 
 
 
253
  
251
254
  <refsect1 id="protocol">
252
255
    <title>NETWORK PROTOCOL</title>
253
256
    <para>
305
308
      </row>
306
309
    </tbody></tgroup></table>
307
310
  </refsect1>
308
 
 
 
311
  
309
312
  <refsect1 id="checking">
310
313
    <title>CHECKING</title>
311
314
    <para>
312
315
      The server will, by default, continually check that the clients
313
316
      are still up.  If a client has not been confirmed as being up
314
317
      for some time, the client is assumed to be compromised and is no
315
 
      longer eligible to receive the encrypted password.  The timeout,
 
318
      longer eligible to receive the encrypted password.  (Manual
 
319
      intervention is required to re-enable a client.)  The timeout,
316
320
      checker program, and interval between checks can be configured
317
321
      both globally and per client; see <citerefentry>
318
322
      <refentrytitle>mandos-clients.conf</refentrytitle>
319
 
      <manvolnum>5</manvolnum></citerefentry>.
 
323
      <manvolnum>5</manvolnum></citerefentry>.  A client successfully
 
324
      receiving its password will also be treated as a successful
 
325
      checker run.
320
326
    </para>
321
327
  </refsect1>
322
 
 
 
328
  
323
329
  <refsect1 id="logging">
324
330
    <title>LOGGING</title>
325
331
    <para>
329
335
      and also show them on the console.
330
336
    </para>
331
337
  </refsect1>
332
 
 
 
338
  
333
339
  <refsect1 id="exit_status">
334
340
    <title>EXIT STATUS</title>
335
341
    <para>
337
343
      critical error is encountered.
338
344
    </para>
339
345
  </refsect1>
340
 
 
 
346
  
341
347
  <refsect1 id="environment">
342
348
    <title>ENVIRONMENT</title>
343
349
    <variablelist>
344
350
      <varlistentry>
345
 
        <term><varname>PATH</varname></term>
 
351
        <term><envar>PATH</envar></term>
346
352
        <listitem>
347
353
          <para>
348
354
            To start the configured checker (see <xref
357
363
      </varlistentry>
358
364
    </variablelist>
359
365
  </refsect1>
360
 
 
361
 
  <refsect1 id="file">
 
366
  
 
367
  <refsect1 id="files">
362
368
    <title>FILES</title>
363
369
    <para>
364
370
      Use the <option>--configdir</option> option to change where
387
393
        </listitem>
388
394
      </varlistentry>
389
395
      <varlistentry>
390
 
        <term><filename>/var/run/mandos/mandos.pid</filename></term>
 
396
        <term><filename>/var/run/mandos.pid</filename></term>
391
397
        <listitem>
392
398
          <para>
393
399
            The file containing the process id of
428
434
      Currently, if a client is declared <quote>invalid</quote> due to
429
435
      having timed out, the server does not record this fact onto
430
436
      permanent storage.  This has some security implications, see
431
 
      <xref linkend="CLIENTS"/>.
 
437
      <xref linkend="clients"/>.
432
438
    </para>
433
439
    <para>
434
440
      There is currently no way of querying the server of the current
442
448
      Debug mode is conflated with running in the foreground.
443
449
    </para>
444
450
    <para>
445
 
      The console log messages does not show a timestamp.
 
451
      The console log messages do not show a time stamp.
 
452
    </para>
 
453
    <para>
 
454
      This server does not check the expire time of clients’ OpenPGP
 
455
      keys.
446
456
    </para>
447
457
  </refsect1>
448
458
  
483
493
      </para>
484
494
    </informalexample>
485
495
  </refsect1>
486
 
 
 
496
  
487
497
  <refsect1 id="security">
488
498
    <title>SECURITY</title>
489
 
    <refsect2 id="SERVER">
 
499
    <refsect2 id="server">
490
500
      <title>SERVER</title>
491
501
      <para>
492
502
        Running this <command>&COMMANDNAME;</command> server program
493
503
        should not in itself present any security risk to the host
494
 
        computer running it.  The program does not need any special
495
 
        privileges to run, and is designed to run as a non-root user.
 
504
        computer running it.  The program switches to a non-root user
 
505
        soon after startup.
496
506
      </para>
497
507
    </refsect2>
498
 
    <refsect2 id="CLIENTS">
 
508
    <refsect2 id="clients">
499
509
      <title>CLIENTS</title>
500
510
      <para>
501
511
        The server only gives out its stored data to clients which
508
518
        <citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
509
519
        <manvolnum>5</manvolnum></citerefentry>)
510
520
        <emphasis>must</emphasis> be made non-readable by anyone
511
 
        except the user running the server.
 
521
        except the user starting the server (usually root).
512
522
      </para>
513
523
      <para>
514
524
        As detailed in <xref linkend="checking"/>, the status of all
525
535
        restarting servers if it is suspected that a client has, in
526
536
        fact, been compromised by parties who may now be running a
527
537
        fake Mandos client with the keys from the non-encrypted
528
 
        initial RAM image of the client host.  What should be done in
529
 
        that case (if restarting the server program really is
530
 
        necessary) is to stop the server program, edit the
 
538
        initial <acronym>RAM</acronym> image of the client host.  What
 
539
        should be done in that case (if restarting the server program
 
540
        really is necessary) is to stop the server program, edit the
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        configuration file to omit any suspect clients, and restart
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        the server program.
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      </para>
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      <para>
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        For more details on client-side security, see
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        <citerefentry><refentrytitle>password-request</refentrytitle>
 
546
        <citerefentry><refentrytitle>mandos-client</refentrytitle>
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        <manvolnum>8mandos</manvolnum></citerefentry>.
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      </para>
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    </refsect2>
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  </refsect1>
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551
  
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  <refsect1 id="see_also">
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    <title>SEE ALSO</title>
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    <para>
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        <manvolnum>5</manvolnum></citerefentry>, <citerefentry>
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        <refentrytitle>mandos.conf</refentrytitle>
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        <manvolnum>5</manvolnum></citerefentry>, <citerefentry>
550
 
        <refentrytitle>password-request</refentrytitle>
 
560
        <refentrytitle>mandos-client</refentrytitle>
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        <manvolnum>8mandos</manvolnum></citerefentry>, <citerefentry>
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        <refentrytitle>sh</refentrytitle><manvolnum>1</manvolnum>
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      </citerefentry>