1
1
<?xml version="1.0" encoding="UTF-8"?>
2
2
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3
3
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4
<!ENTITY VERSION "1.0">
4
5
<!ENTITY COMMANDNAME "mandos">
5
<!ENTITY TIMESTAMP "2011-11-26">
6
<!ENTITY % common SYSTEM "common.ent">
6
<!ENTITY TIMESTAMP "2008-08-29">
10
9
<refentry xmlns:xi="http://www.w3.org/2001/XInclude">
12
11
<title>Mandos Manual</title>
13
12
<!-- NWalsh’s docbook scripts use this to generate the footer: -->
14
13
<productname>Mandos</productname>
15
<productnumber>&version;</productnumber>
14
<productnumber>&VERSION;</productnumber>
16
15
<date>&TIMESTAMP;</date>
19
18
<firstname>Björn</firstname>
20
19
<surname>Påhlsson</surname>
22
<email>belorn@recompile.se</email>
21
<email>belorn@fukt.bsnet.se</email>
26
25
<firstname>Teddy</firstname>
27
26
<surname>Hogeborn</surname>
29
<email>teddy@recompile.se</email>
28
<email>teddy@fukt.bsnet.se</email>
38
34
<holder>Teddy Hogeborn</holder>
39
35
<holder>Björn Påhlsson</holder>
41
<xi:include href="legalnotice.xml"/>
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
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
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/"/>.
45
63
<refentrytitle>&COMMANDNAME;</refentrytitle>
46
64
<manvolnum>8</manvolnum>
50
68
<refname><command>&COMMANDNAME;</command></refname>
52
Gives encrypted passwords to authenticated Mandos clients
70
Sends encrypted passwords to authenticated Mandos clients
58
76
<command>&COMMANDNAME;</command>
60
<arg choice="plain"><option>--interface
61
<replaceable>NAME</replaceable></option></arg>
62
<arg choice="plain"><option>-i
63
<replaceable>NAME</replaceable></option></arg>
67
<arg choice="plain"><option>--address
68
<replaceable>ADDRESS</replaceable></option></arg>
69
<arg choice="plain"><option>-a
70
<replaceable>ADDRESS</replaceable></option></arg>
74
<arg choice="plain"><option>--port
75
<replaceable>PORT</replaceable></option></arg>
76
<arg choice="plain"><option>-p
77
<replaceable>PORT</replaceable></option></arg>
80
<arg><option>--priority
81
<replaceable>PRIORITY</replaceable></option></arg>
83
<arg><option>--servicename
84
<replaceable>NAME</replaceable></option></arg>
86
<arg><option>--configdir
87
<replaceable>DIRECTORY</replaceable></option></arg>
89
<arg><option>--debug</option></arg>
91
<arg><option>--debuglevel
92
<replaceable>LEVEL</replaceable></option></arg>
94
<arg><option>--no-dbus</option></arg>
96
<arg><option>--no-ipv6</option></arg>
98
<arg><option>--no-restore</option></arg>
100
<arg><option>--statedir
101
<replaceable>DIRECTORY</replaceable></option></arg>
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>
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>
104
96
<command>&COMMANDNAME;</command>
105
97
<group choice="req">
106
<arg choice="plain"><option>--help</option></arg>
107
<arg choice="plain"><option>-h</option></arg>
98
<arg choice="plain">-h</arg>
99
<arg choice="plain">--help</arg>
111
103
<command>&COMMANDNAME;</command>
112
<arg choice="plain"><option>--version</option></arg>
104
<arg choice="plain">--version</arg>
115
107
<command>&COMMANDNAME;</command>
116
<arg choice="plain"><option>--check</option></arg>
108
<arg choice="plain">--check</arg>
118
110
</refsynopsisdiv>
120
112
<refsect1 id="description">
121
113
<title>DESCRIPTION</title>
123
115
<command>&COMMANDNAME;</command> is a server daemon which
124
116
handles incoming request for passwords for a pre-defined list of
125
client host computers. For an introduction, see
126
<citerefentry><refentrytitle>intro</refentrytitle>
127
<manvolnum>8mandos</manvolnum></citerefentry>. The Mandos server
128
uses Zeroconf to announce itself on the local network, and uses
129
TLS to communicate securely with and to authenticate the
130
clients. The Mandos server uses IPv6 to allow Mandos clients to
131
use IPv6 link-local addresses, since the clients will probably
132
not have any other addresses configured (see <xref
133
linkend="overview"/>). Any authenticated client is then given
134
the stored pre-encrypted password for that specific client.
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.
138
129
<refsect1 id="purpose">
139
130
<title>PURPOSE</title>
141
133
The purpose of this is to enable <emphasis>remote and unattended
142
134
rebooting</emphasis> of client host computer with an
143
135
<emphasis>encrypted root file system</emphasis>. See <xref
144
136
linkend="overview"/> for details.
148
141
<refsect1 id="options">
149
142
<title>OPTIONS</title>
146
<term><option>-h</option></term>
152
147
<term><option>--help</option></term>
153
<term><option>-h</option></term>
156
150
Show a help message and exit
156
<term><option>-i</option>
157
<replaceable>NAME</replaceable></term>
162
158
<term><option>--interface</option>
163
159
<replaceable>NAME</replaceable></term>
164
<term><option>-i</option>
165
<replaceable>NAME</replaceable></term>
167
161
<xi:include href="mandos-options.xml" xpointer="interface"/>
172
<term><option>--address
173
<replaceable>ADDRESS</replaceable></option></term>
175
<replaceable>ADDRESS</replaceable></option></term>
166
<term><literal>-a</literal>, <literal>--address <replaceable>
167
ADDRESS</replaceable></literal></term>
177
169
<xi:include href="mandos-options.xml" xpointer="address"/>
183
<replaceable>PORT</replaceable></option></term>
185
<replaceable>PORT</replaceable></option></term>
174
<term><literal>-p</literal>, <literal>--port <replaceable>
175
PORT</replaceable></literal></term>
187
177
<xi:include href="mandos-options.xml" xpointer="port"/>
192
<term><option>--check</option></term>
182
<term><literal>--check</literal></term>
195
185
Run the server’s self-tests. This includes any unit
202
<term><option>--debug</option></term>
192
<term><literal>--debug</literal></term>
204
194
<xi:include href="mandos-options.xml" xpointer="debug"/>
209
<term><option>--debuglevel
210
<replaceable>LEVEL</replaceable></option></term>
213
Set the debugging log level.
214
<replaceable>LEVEL</replaceable> is a string, one of
215
<quote><literal>CRITICAL</literal></quote>,
216
<quote><literal>ERROR</literal></quote>,
217
<quote><literal>WARNING</literal></quote>,
218
<quote><literal>INFO</literal></quote>, or
219
<quote><literal>DEBUG</literal></quote>, in order of
220
increasing verbosity. The default level is
221
<quote><literal>WARNING</literal></quote>.
227
<term><option>--priority <replaceable>
228
PRIORITY</replaceable></option></term>
199
<term><literal>--priority <replaceable>
200
PRIORITY</replaceable></literal></term>
230
202
<xi:include href="mandos-options.xml" xpointer="priority"/>
235
<term><option>--servicename
236
<replaceable>NAME</replaceable></option></term>
207
<term><literal>--servicename <replaceable>NAME</replaceable>
238
210
<xi:include href="mandos-options.xml"
239
211
xpointer="servicename"/>
244
<term><option>--configdir
245
<replaceable>DIRECTORY</replaceable></option></term>
216
<term><literal>--configdir <replaceable>DIR</replaceable>
248
220
Directory to search for configuration files. Default is
366
306
</tbody></tgroup></table>
369
309
<refsect1 id="checking">
370
310
<title>CHECKING</title>
372
312
The server will, by default, continually check that the clients
373
313
are still up. If a client has not been confirmed as being up
374
314
for some time, the client is assumed to be compromised and is no
375
longer eligible to receive the encrypted password. (Manual
376
intervention is required to re-enable a client.) The timeout,
377
extended timeout, checker program, and interval between checks
378
can be configured both globally and per client; see
379
<citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
380
<manvolnum>5</manvolnum></citerefentry>. A client successfully
381
receiving its password will also be treated as a successful
386
<refsect1 id="approval">
387
<title>APPROVAL</title>
389
The server can be configured to require manual approval for a
390
client before it is sent its secret. The delay to wait for such
391
approval and the default action (approve or deny) can be
392
configured both globally and per client; see <citerefentry>
315
longer eligible to receive the encrypted password. The timeout,
316
checker program, and interval between checks can be configured
317
both globally and per client; see <citerefentry>
393
318
<refentrytitle>mandos-clients.conf</refentrytitle>
394
<manvolnum>5</manvolnum></citerefentry>. By default all clients
395
will be approved immediately without delay.
398
This can be used to deny a client its secret if not manually
399
approved within a specified time. It can also be used to make
400
the server delay before giving a client its secret, allowing
401
optional manual denying of this specific client.
319
<manvolnum>5</manvolnum></citerefentry>.
406
323
<refsect1 id="logging">
407
324
<title>LOGGING</title>
610
516
compromised if they are gone for too long.
519
If a client is compromised, its downtime should be duly noted
520
by the server which would therefore declare the client
521
invalid. But if the server was ever restarted, it would
522
re-read its client list from its configuration file and again
523
regard all clients therein as valid, and hence eligible to
524
receive their passwords. Therefore, be careful when
525
restarting servers if it is suspected that a client has, in
526
fact, been compromised by parties who may now be running a
527
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
531
configuration file to omit any suspect clients, and restart
613
535
For more details on client-side security, see
614
<citerefentry><refentrytitle>mandos-client</refentrytitle>
536
<citerefentry><refentrytitle>password-request</refentrytitle>
615
537
<manvolnum>8mandos</manvolnum></citerefentry>.
620
542
<refsect1 id="see_also">
621
543
<title>SEE ALSO</title>
623
<citerefentry><refentrytitle>intro</refentrytitle>
624
<manvolnum>8mandos</manvolnum></citerefentry>,
625
<citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
626
<manvolnum>5</manvolnum></citerefentry>,
627
<citerefentry><refentrytitle>mandos.conf</refentrytitle>
628
<manvolnum>5</manvolnum></citerefentry>,
629
<citerefentry><refentrytitle>mandos-client</refentrytitle>
630
<manvolnum>8mandos</manvolnum></citerefentry>,
631
<citerefentry><refentrytitle>sh</refentrytitle>
632
<manvolnum>1</manvolnum></citerefentry>
546
<refentrytitle>mandos-clients.conf</refentrytitle>
547
<manvolnum>5</manvolnum></citerefentry>, <citerefentry>
548
<refentrytitle>mandos.conf</refentrytitle>
549
<manvolnum>5</manvolnum></citerefentry>, <citerefentry>
550
<refentrytitle>password-request</refentrytitle>
551
<manvolnum>8mandos</manvolnum></citerefentry>, <citerefentry>
552
<refentrytitle>sh</refentrytitle><manvolnum>1</manvolnum>