68
52
<refname><filename>&CONFNAME;</filename></refname>
70
Configuration file for Mandos clients
54
Configuration file for the Mandos server
59
<synopsis>&CONFPATH;</synopsis>
80
62
<refsect1 id="description">
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63
<title>DESCRIPTION</title>
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The file &CONFPATH; is the configuration file for mandos where
84
each client that will be abel to use the service need to be
85
specified. The configuration file is looked on at the startup of
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the service, so to reenable timedout clients one need to only
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restart the server. The format starts with a section under []
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which is eather <literal>[DEFAULT]</literal> or a client
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name. Values is set through the use of VAR = VALUE pair. Values
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<refsect1 id="default">
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<title>DEFAULTS</title>
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The paramters for <literal>[DEFAULT]</literal> are:
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<term><literal>timeout</literal></term>
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This option allows you to override the default timeout
107
that clients will get. By default mandos will use 1hr.
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<term><literal>interval</literal></term>
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This option allows you to override the default interval
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used between checkups for disconnected clients. By default
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<term><literal>checker</literal></term>
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This option allows you to override the default shell
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command that the server will use to check up if the client
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is still up. By default mandos will "fping -q -- %%(fqdn)s"
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<refsect1 id="clients">
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<title>CLIENTS</title>
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The paramters for clients are:
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<term><literal>fingerprint</literal></term>
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This option sets the openpgp fingerprint that identifies
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the public certificate that clients authenticates themself
151
through gnutls. The string need to be in hex-decimal form.
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<term><literal>secret</literal></term>
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Base 64 encoded OpenPGP encrypted password encrypted by
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the clients openpgp certificate.
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<term><literal>secfile</literal></term>
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Base 64 encoded OpenPGP encrypted password encrypted by
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the clients openpgp certificate as a binary file.
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<term><literal>fqdn</literal></term>
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FQDN, that can be used in for checking that the client is up.
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<term><literal>checker</literal></term>
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Shell command that the server will use to check up if a
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<term><literal>timeout</literal></term>
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Duration that a client can be down whitout be removed from
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<refsect1 id="examples">
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<title>EXAMPLES</title>
65
The file &CONFPATH; is a configuration file for <citerefentry
66
><refentrytitle>mandos</refentrytitle>
67
<manvolnum>8</manvolnum></citerefentry>, read by it at startup.
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The file needs to list all clients that should be able to use
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the service. The settings in this file can be overridden by
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runtime changes to the server, which it saves across restarts.
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(See the section called <quote>PERSISTENT STATE</quote> in
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<citerefentry><refentrytitle>mandos</refentrytitle><manvolnum
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>8</manvolnum></citerefentry>.) However, any <emphasis
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>changes</emphasis> to this file (including adding and removing
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clients) will, at startup, override changes done during runtime.
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The format starts with a <literal>[<replaceable>section
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header</replaceable>]</literal> which is either
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<literal>[DEFAULT]</literal> or <literal>[<replaceable>client
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name</replaceable>]</literal>. The <replaceable>client
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name</replaceable> can be anything, and is not tied to a host
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name. Following the section header is any number of
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<quote><varname><replaceable>option</replaceable
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></varname>=<replaceable>value</replaceable></quote> entries,
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with continuations in the style of RFC 822. <quote><varname
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><replaceable>option</replaceable></varname>: <replaceable
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>value</replaceable></quote> is also accepted. Note that
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leading whitespace is removed from values. Values can contain
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format strings which refer to other values in the same section,
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or values in the <quote>DEFAULT</quote> section (see <xref
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linkend="expansion"/>). Lines beginning with <quote>#</quote>
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or <quote>;</quote> are ignored and may be used to provide
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<refsect1 id="options">
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<title>OPTIONS</title>
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<emphasis>Note:</emphasis> all option values are subject to
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start time expansion, see <xref linkend="expansion"/>.
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Unknown options are ignored. The used options are as follows:
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<term><option>approval_delay<literal> = </literal><replaceable
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>TIME</replaceable></option></term>
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This option is <emphasis>optional</emphasis>.
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How long to wait for external approval before resorting to
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use the <option>approved_by_default</option> value. The
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default is <quote>PT0S</quote>, i.e. not to wait.
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The format of <replaceable>TIME</replaceable> is the same
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as for <varname>timeout</varname> below.
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<term><option>approval_duration<literal> = </literal
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><replaceable>TIME</replaceable></option></term>
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This option is <emphasis>optional</emphasis>.
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How long an external approval lasts. The default is 1
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The format of <replaceable>TIME</replaceable> is the same
142
as for <varname>timeout</varname> below.
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<term><option>approved_by_default<literal> = </literal
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>{ <literal >1</literal> | <literal>yes</literal> | <literal
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>true</literal> | <literal>on</literal> | <literal
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>0</literal> | <literal>no</literal> | <literal
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>false</literal> | <literal>off</literal> }</option></term>
155
Whether to approve a client by default after
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the <option>approval_delay</option>. The default
157
is <quote>True</quote>.
163
<term><option>checker<literal> = </literal><replaceable
164
>COMMAND</replaceable></option></term>
167
This option is <emphasis>optional</emphasis>.
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This option overrides the default shell command that the
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server will use to check if the client is still up. Any
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output of the command will be ignored, only the exit code
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is checked: If the exit code of the command is zero, the
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client is considered up. The command will be run using
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<quote><command><filename>/bin/sh</filename>
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<option>-c</option></command></quote>, so
177
<varname>PATH</varname> will be searched. The default
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value for the checker command is <quote><literal
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><command>fping</command> <option>-q</option> <option
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>--</option> %%(host)s</literal></quote>. Note that
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<command>mandos-keygen</command>, when generating output
182
to be inserted into this file, normally looks for an SSH
183
server on the Mandos client, and, if it find one, outputs
184
a <option>checker</option> option to check for the
185
client’s key fingerprint – this is more secure against
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In addition to normal start time expansion, this option
190
will also be subject to runtime expansion; see <xref
191
linkend="expansion"/>.
197
<term><option>extended_timeout<literal> = </literal><replaceable
198
>TIME</replaceable></option></term>
201
This option is <emphasis>optional</emphasis>.
204
Extended timeout is an added timeout that is given once
205
after a password has been sent successfully to a client.
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The timeout is by default longer than the normal timeout,
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and is used for handling the extra long downtime while a
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machine is booting up. Time to take into consideration
209
when changing this value is file system checks and quota
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checks. The default value is 15 minutes.
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The format of <replaceable>TIME</replaceable> is the same
214
as for <varname>timeout</varname> below.
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<term><option>fingerprint<literal> = </literal
221
><replaceable>HEXSTRING</replaceable></option></term>
224
This option is <emphasis>required</emphasis>.
227
This option sets the OpenPGP fingerprint that identifies
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the public key that clients authenticate themselves with
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through TLS. The string needs to be in hexidecimal form,
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but spaces or upper/lower case are not significant.
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<term><option><literal>host = </literal><replaceable
237
>STRING</replaceable></option></term>
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This option is <emphasis>optional</emphasis>, but highly
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<emphasis>recommended</emphasis> unless the
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<option>checker</option> option is modified to a
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non-standard value without <quote>%%(host)s</quote> in it.
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Host name for this client. This is not used by the server
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directly, but can be, and is by default, used by the
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checker. See the <option>checker</option> option.
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<term><option>interval<literal> = </literal><replaceable
255
>TIME</replaceable></option></term>
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This option is <emphasis>optional</emphasis>.
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How often to run the checker to confirm that a client is
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still up. <emphasis>Note:</emphasis> a new checker will
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not be started if an old one is still running. The server
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will wait for a checker to complete until the below
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<quote><varname>timeout</varname></quote> occurs, at which
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time the client will be disabled, and any running checker
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killed. The default interval is 2 minutes.
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The format of <replaceable>TIME</replaceable> is the same
271
as for <varname>timeout</varname> below.
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<term><option>secfile<literal> = </literal><replaceable
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>FILENAME</replaceable></option></term>
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This option is only used if <option>secret</option> is not
282
specified, in which case this option is
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<emphasis>required</emphasis>.
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Similar to the <option>secret</option>, except the secret
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data is in an external file. The contents of the file
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should <emphasis>not</emphasis> be base64-encoded, but
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will be sent to clients verbatim.
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File names of the form <filename>~user/foo/bar</filename>
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and <filename>$<envar>ENVVAR</envar>/foo/bar</filename>
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<term><option>secret<literal> = </literal><replaceable
301
>BASE64_ENCODED_DATA</replaceable></option></term>
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If this option is not specified, the <option
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>secfile</option> option is <emphasis>required</emphasis>
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If present, this option must be set to a string of
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base64-encoded binary data. It will be decoded and sent
311
to the client matching the above
312
<option>fingerprint</option>. This should, of course, be
313
OpenPGP encrypted data, decryptable only by the client.
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The program <citerefentry><refentrytitle><command
315
>mandos-keygen</command></refentrytitle><manvolnum
316
>8</manvolnum></citerefentry> can, using its
317
<option>--password</option> option, be used to generate
321
Note: this value of this option will probably be very
322
long. A useful feature to avoid having unreadably-long
323
lines is that a line beginning with white space adds to
324
the value of the previous line, RFC 822-style.
330
<term><option>timeout<literal> = </literal><replaceable
331
>TIME</replaceable></option></term>
334
This option is <emphasis>optional</emphasis>.
337
The timeout is how long the server will wait, after a
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successful checker run, until a client is disabled and not
339
allowed to get the data this server holds. By default
340
Mandos will use 5 minutes. See also the
341
<option>extended_timeout</option> option.
344
The <replaceable>TIME</replaceable> is specified as an RFC
345
3339 duration; for example
346
<quote><literal>P1Y2M3DT4H5M6S</literal></quote> meaning
347
one year, two months, three days, four hours, five
348
minutes, and six seconds. Some values can be omitted, see
349
RFC 3339 Appendix A for details.
355
<term><option>enabled<literal> = </literal>{ <literal
356
>1</literal> | <literal>yes</literal> | <literal>true</literal
357
> | <literal >on</literal> | <literal>0</literal> | <literal
358
>no</literal> | <literal>false</literal> | <literal
359
>off</literal> }</option></term>
362
Whether this client should be enabled by default. The
363
default is <quote>true</quote>.
371
<refsect1 id="expansion">
372
<title>EXPANSION</title>
374
There are two forms of expansion: Start time expansion and
377
<refsect2 id="start_time_expansion">
378
<title>START TIME EXPANSION</title>
380
Any string in an option value of the form
381
<quote><literal>%(<replaceable>foo</replaceable>)s</literal
382
></quote> will be replaced by the value of the option
383
<varname>foo</varname> either in the same section, or, if it
384
does not exist there, the <literal>[DEFAULT]</literal>
385
section. This is done at start time, when the configuration
389
Note that this means that, in order to include an actual
390
percent character (<quote>%</quote>) in an option value, two
391
percent characters in a row (<quote>%%</quote>) must be
395
<refsect2 id="runtime_expansion">
396
<title>RUNTIME EXPANSION</title>
398
This is currently only done for the <varname>checker</varname>
402
Any string in an option value of the form
403
<quote><literal>%%(<replaceable>foo</replaceable>)s</literal
404
></quote> will be replaced by the value of the attribute
405
<varname>foo</varname> of the internal
406
<quote><classname>Client</classname></quote> object in the
407
Mandos server. The currently allowed values for
408
<replaceable>foo</replaceable> are:
409
<quote><literal>approval_delay</literal></quote>,
410
<quote><literal>approval_duration</literal></quote>,
411
<quote><literal>created</literal></quote>,
412
<quote><literal>enabled</literal></quote>,
413
<quote><literal>expires</literal></quote>,
414
<quote><literal>fingerprint</literal></quote>,
415
<quote><literal>host</literal></quote>,
416
<quote><literal>interval</literal></quote>,
417
<quote><literal>last_approval_request</literal></quote>,
418
<quote><literal>last_checked_ok</literal></quote>,
419
<quote><literal>last_enabled</literal></quote>,
420
<quote><literal>name</literal></quote>,
421
<quote><literal>timeout</literal></quote>, and, if using
422
D-Bus, <quote><literal>dbus_object_path</literal></quote>.
423
See the source code for details. <emphasis role="strong"
424
>Currently, <emphasis>none</emphasis> of these attributes
425
except <quote><literal>host</literal></quote> are guaranteed
426
to be valid in future versions.</emphasis> Therefore, please
427
let the authors know of any attributes that are useful so they
428
may be preserved to any new versions of this software.
431
Note that this means that, in order to include an actual
432
percent character (<quote>%</quote>) in a
433
<varname>checker</varname> option, <emphasis>four</emphasis>
434
percent characters in a row (<quote>%%%%</quote>) must be
435
entered. Also, a bad format here will lead to an immediate
436
but <emphasis>silent</emphasis> run-time fatal exit; debug
437
mode is needed to expose an error of this kind.
443
<refsect1 id="files">
446
The file described here is &CONFPATH;
453
The format for specifying times for <varname>timeout</varname>
454
and <varname>interval</varname> is not very good.
457
The difference between
458
<literal>%%(<replaceable>foo</replaceable>)s</literal> and
459
<literal>%(<replaceable>foo</replaceable>)s</literal> is
464
<refsect1 id="example">
465
<title>EXAMPLE</title>
210
466
<informalexample>
215
checker = fping -q -- %%(fqdn)s
471
checker = fping -q -- %%(host)s
218
475
fingerprint = 7788 2722 5BA7 DE53 9C5A 7CFA 59CF F7CD BD9A 5920
221
477
hQIOA6QdEjBs2L/HEAf/TCyrDe5Xnm9esa+Pb/vWF9CUqfn4srzVgSu234
222
478
REJMVv7lBSrPE2132Lmd2gqF1HeLKDJRSVxJpt6xoWOChGHg+TMyXDxK+N