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  • 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.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 "2014-06-15">
 
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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>
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    <productnumber>&VERSION;</productnumber>
 
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    <productnumber>&version;</productnumber>
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    <date>&TIMESTAMP;</date>
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    <authorgroup>
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      <author>
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        <firstname>Björn</firstname>
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        <surname>Påhlsson</surname>
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        <address>
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          <email>belorn@fukt.bsnet.se</email>
 
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          <email>belorn@recompile.se</email>
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        </address>
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      </author>
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      <author>
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        <firstname>Teddy</firstname>
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        <surname>Hogeborn</surname>
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        <address>
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          <email>teddy@fukt.bsnet.se</email>
 
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          <email>teddy@recompile.se</email>
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        </address>
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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>
 
36
      <year>2010</year>
 
37
      <year>2011</year>
 
38
      <year>2012</year>
 
39
      <year>2013</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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    <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>
 
43
    <xi:include href="legalnotice.xml"/>
60
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  </refentryinfo>
61
 
 
 
45
  
62
46
  <refmeta>
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    <refentrytitle>&COMMANDNAME;</refentrytitle>
64
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    <manvolnum>8</manvolnum>
67
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  <refnamediv>
68
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    <refname><command>&COMMANDNAME;</command></refname>
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    <refpurpose>
70
 
      Sends encrypted passwords to authenticated Mandos clients
 
54
      Gives encrypted passwords to authenticated Mandos clients
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    </refpurpose>
72
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  </refnamediv>
73
 
 
 
57
  
74
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  <refsynopsisdiv>
75
59
    <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>
 
61
      <group>
 
62
        <arg choice="plain"><option>--interface
 
63
        <replaceable>NAME</replaceable></option></arg>
 
64
        <arg choice="plain"><option>-i
 
65
        <replaceable>NAME</replaceable></option></arg>
 
66
      </group>
 
67
      <sbr/>
 
68
      <group>
 
69
        <arg choice="plain"><option>--address
 
70
        <replaceable>ADDRESS</replaceable></option></arg>
 
71
        <arg choice="plain"><option>-a
 
72
        <replaceable>ADDRESS</replaceable></option></arg>
 
73
      </group>
 
74
      <sbr/>
 
75
      <group>
 
76
        <arg choice="plain"><option>--port
 
77
        <replaceable>PORT</replaceable></option></arg>
 
78
        <arg choice="plain"><option>-p
 
79
        <replaceable>PORT</replaceable></option></arg>
 
80
      </group>
 
81
      <sbr/>
 
82
      <arg><option>--priority
 
83
      <replaceable>PRIORITY</replaceable></option></arg>
 
84
      <sbr/>
 
85
      <arg><option>--servicename
 
86
      <replaceable>NAME</replaceable></option></arg>
 
87
      <sbr/>
 
88
      <arg><option>--configdir
 
89
      <replaceable>DIRECTORY</replaceable></option></arg>
 
90
      <sbr/>
 
91
      <arg><option>--debug</option></arg>
 
92
      <sbr/>
 
93
      <arg><option>--debuglevel
 
94
      <replaceable>LEVEL</replaceable></option></arg>
 
95
      <sbr/>
 
96
      <arg><option>--no-dbus</option></arg>
 
97
      <sbr/>
 
98
      <arg><option>--no-ipv6</option></arg>
 
99
      <sbr/>
 
100
      <arg><option>--no-restore</option></arg>
 
101
      <sbr/>
 
102
      <arg><option>--statedir
 
103
      <replaceable>DIRECTORY</replaceable></option></arg>
 
104
      <sbr/>
 
105
      <arg><option>--socket
 
106
      <replaceable>FD</replaceable></option></arg>
 
107
      <sbr/>
 
108
      <arg><option>--foreground</option></arg>
 
109
      <sbr/>
 
110
      <arg><option>--no-zeroconf</option></arg>
94
111
    </cmdsynopsis>
95
112
    <cmdsynopsis>
96
113
      <command>&COMMANDNAME;</command>
97
114
      <group choice="req">
98
 
        <arg choice="plain">-h</arg>
99
 
        <arg choice="plain">--help</arg>
 
115
        <arg choice="plain"><option>--help</option></arg>
 
116
        <arg choice="plain"><option>-h</option></arg>
100
117
      </group>
101
118
    </cmdsynopsis>
102
119
    <cmdsynopsis>
103
120
      <command>&COMMANDNAME;</command>
104
 
      <arg choice="plain">--version</arg>
 
121
      <arg choice="plain"><option>--version</option></arg>
105
122
    </cmdsynopsis>
106
123
    <cmdsynopsis>
107
124
      <command>&COMMANDNAME;</command>
108
 
      <arg choice="plain">--check</arg>
 
125
      <arg choice="plain"><option>--check</option></arg>
109
126
    </cmdsynopsis>
110
127
  </refsynopsisdiv>
111
 
 
 
128
  
112
129
  <refsect1 id="description">
113
130
    <title>DESCRIPTION</title>
114
131
    <para>
115
132
      <command>&COMMANDNAME;</command> is a server daemon which
116
133
      handles incoming request for passwords for a pre-defined list of
117
 
      client host computers.  The Mandos server uses Zeroconf to
118
 
      announce itself on the local network, and uses TLS to
119
 
      communicate securely with and to authenticate the clients.  The
120
 
      Mandos server uses IPv6 to allow Mandos clients to use IPv6
121
 
      link-local addresses, since the clients will probably not have
122
 
      any other addresses configured (see <xref linkend="overview"/>).
123
 
      Any authenticated client is then given the stored pre-encrypted
124
 
      password for that specific client.
 
134
      client host computers. For an introduction, see
 
135
      <citerefentry><refentrytitle>intro</refentrytitle>
 
136
      <manvolnum>8mandos</manvolnum></citerefentry>. The Mandos server
 
137
      uses Zeroconf to announce itself on the local network, and uses
 
138
      TLS to communicate securely with and to authenticate the
 
139
      clients.  The Mandos server uses IPv6 to allow Mandos clients to
 
140
      use IPv6 link-local addresses, since the clients will probably
 
141
      not have any other addresses configured (see <xref
 
142
      linkend="overview"/>).  Any authenticated client is then given
 
143
      the stored pre-encrypted password for that specific client.
125
144
    </para>
126
 
 
127
145
  </refsect1>
128
146
  
129
147
  <refsect1 id="purpose">
130
148
    <title>PURPOSE</title>
131
 
 
132
149
    <para>
133
150
      The purpose of this is to enable <emphasis>remote and unattended
134
151
      rebooting</emphasis> of client host computer with an
135
152
      <emphasis>encrypted root file system</emphasis>.  See <xref
136
153
      linkend="overview"/> for details.
137
154
    </para>
138
 
 
139
155
  </refsect1>
140
156
  
141
157
  <refsect1 id="options">
142
158
    <title>OPTIONS</title>
143
 
 
144
159
    <variablelist>
145
160
      <varlistentry>
146
 
        <term><literal>-h</literal>, <literal>--help</literal></term>
 
161
        <term><option>--help</option></term>
 
162
        <term><option>-h</option></term>
147
163
        <listitem>
148
164
          <para>
149
165
            Show a help message and exit
150
166
          </para>
151
167
        </listitem>
152
168
      </varlistentry>
153
 
 
 
169
      
154
170
      <varlistentry>
155
 
        <term><literal>-i</literal>, <literal>--interface <replaceable
156
 
        >NAME</replaceable></literal></term>
 
171
        <term><option>--interface</option>
 
172
        <replaceable>NAME</replaceable></term>
 
173
        <term><option>-i</option>
 
174
        <replaceable>NAME</replaceable></term>
157
175
        <listitem>
158
176
          <xi:include href="mandos-options.xml" xpointer="interface"/>
159
177
        </listitem>
160
178
      </varlistentry>
161
 
 
 
179
      
162
180
      <varlistentry>
163
 
        <term><literal>-a</literal>, <literal>--address <replaceable>
164
 
        ADDRESS</replaceable></literal></term>
 
181
        <term><option>--address
 
182
        <replaceable>ADDRESS</replaceable></option></term>
 
183
        <term><option>-a
 
184
        <replaceable>ADDRESS</replaceable></option></term>
165
185
        <listitem>
166
186
          <xi:include href="mandos-options.xml" xpointer="address"/>
167
187
        </listitem>
168
188
      </varlistentry>
169
 
 
 
189
      
170
190
      <varlistentry>
171
 
        <term><literal>-p</literal>, <literal>--port <replaceable>
172
 
        PORT</replaceable></literal></term>
 
191
        <term><option>--port
 
192
        <replaceable>PORT</replaceable></option></term>
 
193
        <term><option>-p
 
194
        <replaceable>PORT</replaceable></option></term>
173
195
        <listitem>
174
196
          <xi:include href="mandos-options.xml" xpointer="port"/>
175
197
        </listitem>
176
198
      </varlistentry>
177
 
 
 
199
      
178
200
      <varlistentry>
179
 
        <term><literal>--check</literal></term>
 
201
        <term><option>--check</option></term>
180
202
        <listitem>
181
203
          <para>
182
204
            Run the server’s self-tests.  This includes any unit
184
206
          </para>
185
207
        </listitem>
186
208
      </varlistentry>
187
 
 
 
209
      
188
210
      <varlistentry>
189
 
        <term><literal>--debug</literal></term>
 
211
        <term><option>--debug</option></term>
190
212
        <listitem>
191
213
          <xi:include href="mandos-options.xml" xpointer="debug"/>
192
214
        </listitem>
193
215
      </varlistentry>
194
 
 
195
 
      <varlistentry>
196
 
        <term><literal>--priority <replaceable>
197
 
        PRIORITY</replaceable></literal></term>
198
 
        <listitem>
199
 
          <xi:include href="mandos-options.xml" xpointer="priority"/>
200
 
        </listitem>
201
 
      </varlistentry>
202
 
 
203
 
      <varlistentry>
204
 
        <term><literal>--servicename <replaceable>NAME</replaceable>
205
 
        </literal></term>
 
216
      
 
217
      <varlistentry>
 
218
        <term><option>--debuglevel
 
219
        <replaceable>LEVEL</replaceable></option></term>
 
220
        <listitem>
 
221
          <para>
 
222
            Set the debugging log level.
 
223
            <replaceable>LEVEL</replaceable> is a string, one of
 
224
            <quote><literal>CRITICAL</literal></quote>,
 
225
            <quote><literal>ERROR</literal></quote>,
 
226
            <quote><literal>WARNING</literal></quote>,
 
227
            <quote><literal>INFO</literal></quote>, or
 
228
            <quote><literal>DEBUG</literal></quote>, in order of
 
229
            increasing verbosity.  The default level is
 
230
            <quote><literal>WARNING</literal></quote>.
 
231
          </para>
 
232
        </listitem>
 
233
      </varlistentry>
 
234
      
 
235
      <varlistentry>
 
236
        <term><option>--priority <replaceable>
 
237
        PRIORITY</replaceable></option></term>
 
238
        <listitem>
 
239
          <xi:include href="mandos-options.xml"
 
240
                      xpointer="priority_compat"/>
 
241
        </listitem>
 
242
      </varlistentry>
 
243
      
 
244
      <varlistentry>
 
245
        <term><option>--servicename
 
246
        <replaceable>NAME</replaceable></option></term>
206
247
        <listitem>
207
248
          <xi:include href="mandos-options.xml"
208
249
                      xpointer="servicename"/>
209
250
        </listitem>
210
251
      </varlistentry>
211
 
 
 
252
      
212
253
      <varlistentry>
213
 
        <term><literal>--configdir <replaceable>DIR</replaceable>
214
 
        </literal></term>
 
254
        <term><option>--configdir
 
255
        <replaceable>DIRECTORY</replaceable></option></term>
215
256
        <listitem>
216
257
          <para>
217
258
            Directory to search for configuration files.  Default is
223
264
          </para>
224
265
        </listitem>
225
266
      </varlistentry>
226
 
 
 
267
      
227
268
      <varlistentry>
228
 
        <term><literal>--version</literal></term>
 
269
        <term><option>--version</option></term>
229
270
        <listitem>
230
271
          <para>
231
272
            Prints the program version and exit.
232
273
          </para>
233
274
        </listitem>
234
275
      </varlistentry>
 
276
      
 
277
      <varlistentry>
 
278
        <term><option>--no-dbus</option></term>
 
279
        <listitem>
 
280
          <xi:include href="mandos-options.xml" xpointer="dbus"/>
 
281
          <para>
 
282
            See also <xref linkend="dbus_interface"/>.
 
283
          </para>
 
284
        </listitem>
 
285
      </varlistentry>
 
286
      
 
287
      <varlistentry>
 
288
        <term><option>--no-ipv6</option></term>
 
289
        <listitem>
 
290
          <xi:include href="mandos-options.xml" xpointer="ipv6"/>
 
291
        </listitem>
 
292
      </varlistentry>
 
293
      
 
294
      <varlistentry>
 
295
        <term><option>--no-restore</option></term>
 
296
        <listitem>
 
297
          <xi:include href="mandos-options.xml" xpointer="restore"/>
 
298
          <para>
 
299
            See also <xref linkend="persistent_state"/>.
 
300
          </para>
 
301
        </listitem>
 
302
      </varlistentry>
 
303
      
 
304
      <varlistentry>
 
305
        <term><option>--statedir
 
306
        <replaceable>DIRECTORY</replaceable></option></term>
 
307
        <listitem>
 
308
          <xi:include href="mandos-options.xml" xpointer="statedir"/>
 
309
        </listitem>
 
310
      </varlistentry>
 
311
      
 
312
      <varlistentry>
 
313
        <term><option>--socket
 
314
        <replaceable>FD</replaceable></option></term>
 
315
        <listitem>
 
316
          <xi:include href="mandos-options.xml" xpointer="socket"/>
 
317
        </listitem>
 
318
      </varlistentry>
 
319
      
 
320
      <varlistentry>
 
321
        <term><option>--foreground</option></term>
 
322
        <listitem>
 
323
          <xi:include href="mandos-options.xml"
 
324
                      xpointer="foreground"/>
 
325
        </listitem>
 
326
      </varlistentry>
 
327
      
 
328
      <varlistentry>
 
329
        <term><option>--no-zeroconf</option></term>
 
330
        <listitem>
 
331
          <xi:include href="mandos-options.xml" xpointer="zeroconf"/>
 
332
        </listitem>
 
333
      </varlistentry>
 
334
      
235
335
    </variablelist>
236
336
  </refsect1>
237
 
 
 
337
  
238
338
  <refsect1 id="overview">
239
339
    <title>OVERVIEW</title>
240
340
    <xi:include href="overview.xml"/>
241
341
    <para>
242
342
      This program is the server part.  It is a normal server program
243
343
      and will run in a normal system environment, not in an initial
244
 
      RAM disk environment.
 
344
      <acronym>RAM</acronym> disk environment.
245
345
    </para>
246
346
  </refsect1>
247
 
 
 
347
  
248
348
  <refsect1 id="protocol">
249
349
    <title>NETWORK PROTOCOL</title>
250
350
    <para>
302
402
      </row>
303
403
    </tbody></tgroup></table>
304
404
  </refsect1>
305
 
 
 
405
  
306
406
  <refsect1 id="checking">
307
407
    <title>CHECKING</title>
308
408
    <para>
309
409
      The server will, by default, continually check that the clients
310
410
      are still up.  If a client has not been confirmed as being up
311
411
      for some time, the client is assumed to be compromised and is no
312
 
      longer eligible to receive the encrypted password.  The timeout,
313
 
      checker program, and interval between checks can be configured
314
 
      both globally and per client; see <citerefentry>
 
412
      longer eligible to receive the encrypted password.  (Manual
 
413
      intervention is required to re-enable a client.)  The timeout,
 
414
      extended timeout, checker program, and interval between checks
 
415
      can be configured both globally and per client; see
 
416
      <citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
 
417
      <manvolnum>5</manvolnum></citerefentry>.
 
418
    </para>
 
419
  </refsect1>
 
420
  
 
421
  <refsect1 id="approval">
 
422
    <title>APPROVAL</title>
 
423
    <para>
 
424
      The server can be configured to require manual approval for a
 
425
      client before it is sent its secret.  The delay to wait for such
 
426
      approval and the default action (approve or deny) can be
 
427
      configured both globally and per client; see <citerefentry>
315
428
      <refentrytitle>mandos-clients.conf</refentrytitle>
316
 
      <manvolnum>5</manvolnum></citerefentry>.
317
 
    </para>
 
429
      <manvolnum>5</manvolnum></citerefentry>.  By default all clients
 
430
      will be approved immediately without delay.
 
431
    </para>
 
432
    <para>
 
433
      This can be used to deny a client its secret if not manually
 
434
      approved within a specified time.  It can also be used to make
 
435
      the server delay before giving a client its secret, allowing
 
436
      optional manual denying of this specific client.
 
437
    </para>
 
438
    
318
439
  </refsect1>
319
 
 
 
440
  
320
441
  <refsect1 id="logging">
321
442
    <title>LOGGING</title>
322
443
    <para>
323
444
      The server will send log message with various severity levels to
324
 
      <filename>/dev/log</filename>.  With the
 
445
      <filename class="devicefile">/dev/log</filename>.  With the
325
446
      <option>--debug</option> option, it will log even more messages,
326
447
      and also show them on the console.
327
448
    </para>
328
449
  </refsect1>
329
 
 
 
450
  
 
451
  <refsect1 id="persistent_state">
 
452
    <title>PERSISTENT STATE</title>
 
453
    <para>
 
454
      Client settings, initially read from
 
455
      <filename>clients.conf</filename>, are persistent across
 
456
      restarts, and run-time changes will override settings in
 
457
      <filename>clients.conf</filename>.  However, if a setting is
 
458
      <emphasis>changed</emphasis> (or a client added, or removed) in
 
459
      <filename>clients.conf</filename>, this will take precedence.
 
460
    </para>
 
461
  </refsect1>
 
462
  
 
463
  <refsect1 id="dbus_interface">
 
464
    <title>D-BUS INTERFACE</title>
 
465
    <para>
 
466
      The server will by default provide a D-Bus system bus interface.
 
467
      This interface will only be accessible by the root user or a
 
468
      Mandos-specific user, if such a user exists.  For documentation
 
469
      of the D-Bus API, see the file <filename>DBUS-API</filename>.
 
470
    </para>
 
471
  </refsect1>
 
472
  
330
473
  <refsect1 id="exit_status">
331
474
    <title>EXIT STATUS</title>
332
475
    <para>
334
477
      critical error is encountered.
335
478
    </para>
336
479
  </refsect1>
337
 
 
 
480
  
338
481
  <refsect1 id="environment">
339
482
    <title>ENVIRONMENT</title>
340
483
    <variablelist>
341
484
      <varlistentry>
342
 
        <term><varname>PATH</varname></term>
 
485
        <term><envar>PATH</envar></term>
343
486
        <listitem>
344
487
          <para>
345
488
            To start the configured checker (see <xref
354
497
      </varlistentry>
355
498
    </variablelist>
356
499
  </refsect1>
357
 
 
358
 
  <refsect1 id="file">
 
500
  
 
501
  <refsect1 id="files">
359
502
    <title>FILES</title>
360
503
    <para>
361
504
      Use the <option>--configdir</option> option to change where
384
527
        </listitem>
385
528
      </varlistentry>
386
529
      <varlistentry>
387
 
        <term><filename>/var/run/mandos/mandos.pid</filename></term>
388
 
        <listitem>
389
 
          <para>
390
 
            The file containing the process id of
391
 
            <command>&COMMANDNAME;</command>.
 
530
        <term><filename>/run/mandos.pid</filename></term>
 
531
        <listitem>
 
532
          <para>
 
533
            The file containing the process id of the
 
534
            <command>&COMMANDNAME;</command> process started last.
 
535
            <emphasis >Note:</emphasis> If the <filename
 
536
            class="directory">/run</filename> directory does not
 
537
            exist, <filename>/var/run/mandos.pid</filename> will be
 
538
            used instead.
 
539
          </para>
 
540
        </listitem>
 
541
      </varlistentry>
 
542
      <varlistentry>
 
543
        <term><filename class="devicefile">/dev/log</filename></term>
 
544
      </varlistentry>
 
545
      <varlistentry>
 
546
        <term><filename
 
547
        class="directory">/var/lib/mandos</filename></term>
 
548
        <listitem>
 
549
          <para>
 
550
            Directory where persistent state will be saved.  Change
 
551
            this with the <option>--statedir</option> option.  See
 
552
            also the <option>--no-restore</option> option.
392
553
          </para>
393
554
        </listitem>
394
555
      </varlistentry>
422
583
      backtrace.  This could be considered a feature.
423
584
    </para>
424
585
    <para>
425
 
      Currently, if a client is declared <quote>invalid</quote> due to
426
 
      having timed out, the server does not record this fact onto
427
 
      permanent storage.  This has some security implications, see
428
 
      <xref linkend="CLIENTS"/>.
429
 
    </para>
430
 
    <para>
431
 
      There is currently no way of querying the server of the current
432
 
      status of clients, other than analyzing its <systemitem
433
 
      class="service">syslog</systemitem> output.
434
 
    </para>
435
 
    <para>
436
586
      There is no fine-grained control over logging and debug output.
437
587
    </para>
438
588
    <para>
439
 
      Debug mode is conflated with running in the foreground.
440
 
    </para>
441
 
    <para>
442
 
      The console log messages does not show a timestamp.
 
589
      This server does not check the expire time of clients’ OpenPGP
 
590
      keys.
443
591
    </para>
444
592
  </refsect1>
445
593
  
456
604
    <informalexample>
457
605
      <para>
458
606
        Run the server in debug mode, read configuration files from
459
 
        the <filename>~/mandos</filename> directory, and use the
460
 
        Zeroconf service name <quote>Test</quote> to not collide with
461
 
        any other official Mandos server on this host:
 
607
        the <filename class="directory">~/mandos</filename> directory,
 
608
        and use the Zeroconf service name <quote>Test</quote> to not
 
609
        collide with any other official Mandos server on this host:
462
610
      </para>
463
611
      <para>
464
612
 
480
628
      </para>
481
629
    </informalexample>
482
630
  </refsect1>
483
 
 
 
631
  
484
632
  <refsect1 id="security">
485
633
    <title>SECURITY</title>
486
 
    <refsect2 id="SERVER">
 
634
    <refsect2 id="server">
487
635
      <title>SERVER</title>
488
636
      <para>
489
637
        Running this <command>&COMMANDNAME;</command> server program
490
638
        should not in itself present any security risk to the host
491
 
        computer running it.  The program does not need any special
492
 
        privileges to run, and is designed to run as a non-root user.
 
639
        computer running it.  The program switches to a non-root user
 
640
        soon after startup.
493
641
      </para>
494
642
    </refsect2>
495
 
    <refsect2 id="CLIENTS">
 
643
    <refsect2 id="clients">
496
644
      <title>CLIENTS</title>
497
645
      <para>
498
646
        The server only gives out its stored data to clients which
505
653
        <citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
506
654
        <manvolnum>5</manvolnum></citerefentry>)
507
655
        <emphasis>must</emphasis> be made non-readable by anyone
508
 
        except the user running the server.
 
656
        except the user starting the server (usually root).
509
657
      </para>
510
658
      <para>
511
659
        As detailed in <xref linkend="checking"/>, the status of all
513
661
        compromised if they are gone for too long.
514
662
      </para>
515
663
      <para>
516
 
        If a client is compromised, its downtime should be duly noted
517
 
        by the server which would therefore declare the client
518
 
        invalid.  But if the server was ever restarted, it would
519
 
        re-read its client list from its configuration file and again
520
 
        regard all clients therein as valid, and hence eligible to
521
 
        receive their passwords.  Therefore, be careful when
522
 
        restarting servers if it is suspected that a client has, in
523
 
        fact, been compromised by parties who may now be running a
524
 
        fake Mandos client with the keys from the non-encrypted
525
 
        initial RAM image of the client host.  What should be done in
526
 
        that case (if restarting the server program really is
527
 
        necessary) is to stop the server program, edit the
528
 
        configuration file to omit any suspect clients, and restart
529
 
        the server program.
530
 
      </para>
531
 
      <para>
532
664
        For more details on client-side security, see
533
 
        <citerefentry><refentrytitle>password-request</refentrytitle>
 
665
        <citerefentry><refentrytitle>mandos-client</refentrytitle>
534
666
        <manvolnum>8mandos</manvolnum></citerefentry>.
535
667
      </para>
536
668
    </refsect2>
537
669
  </refsect1>
538
 
 
 
670
  
539
671
  <refsect1 id="see_also">
540
672
    <title>SEE ALSO</title>
541
673
    <para>
542
 
      <citerefentry>
543
 
        <refentrytitle>mandos.conf</refentrytitle>
544
 
        <manvolnum>5</manvolnum></citerefentry>, <citerefentry>
545
 
        <refentrytitle>mandos-clients.conf</refentrytitle>
546
 
        <manvolnum>5</manvolnum></citerefentry>, <citerefentry>
547
 
        <refentrytitle>password-request</refentrytitle>
548
 
        <manvolnum>8mandos</manvolnum></citerefentry>, <citerefentry>
549
 
        <refentrytitle>sh</refentrytitle><manvolnum>1</manvolnum>
550
 
      </citerefentry>
 
674
      <citerefentry><refentrytitle>intro</refentrytitle>
 
675
      <manvolnum>8mandos</manvolnum></citerefentry>,
 
676
      <citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
 
677
      <manvolnum>5</manvolnum></citerefentry>,
 
678
      <citerefentry><refentrytitle>mandos.conf</refentrytitle>
 
679
      <manvolnum>5</manvolnum></citerefentry>,
 
680
      <citerefentry><refentrytitle>mandos-client</refentrytitle>
 
681
      <manvolnum>8mandos</manvolnum></citerefentry>,
 
682
      <citerefentry><refentrytitle>sh</refentrytitle>
 
683
      <manvolnum>1</manvolnum></citerefentry>
551
684
    </para>
552
685
    <variablelist>
553
686
      <varlistentry>