To get this branch, use:
bzr branch
http://bzr.recompile.se/loggerhead/mandos/trunk
« back to all changes in this revision
Viewing changes to mandos.xml
- browse files at revision 1302
- compare with another revision
- download diff
- download tarball
- view history from revision 1302
- Committer: Teddy Hogeborn
- Date: 2024-09-12 18:31:12 UTC
- mfrom: (237.4.142 release)
- Revision ID: teddy@recompile.se-20240912183112-xxy0akg67c0ky0t8
Merge from release branch
- files added:
- .bzr-builddeb
- debian
- debian/po
- debian/source
- debian/tests
- debian/upstream
- dracut-module
- network-hooks.d
- plugin-helpers
- files removed:
- initramfs-tools-hook-conf
- files renamed:
- plugins.d/password-request.c => plugins.d/mandos-client.c
- plugins.d/password-request.xml => plugins.d/mandos-client.xml
- files modified:
- .bzrignore
added
removed
mandos.xml
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">
5
4
<!ENTITY COMMANDNAME "mandos">
6
<!ENTITY TIMESTAMP "2008-08-31">
5
<!ENTITY TIMESTAMP "2022-04-24">
6
<!ENTITY % common SYSTEM "common.ent">
7
%common;
7
8
]>
8
9
9
10
<refentry xmlns:xi="http://www.w3.org/2001/XInclude">
10
<refentryinfo>
11
<refentryinfo>
11
12
<title>Mandos Manual</title>
12
13
<!-- NWalsh’s docbook scripts use this to generate the footer: -->
13
14
<productname>Mandos</productname>
14
<productnumber>&VERSION;</productnumber>
15
<productnumber>&version;</productnumber>
15
16
<date>&TIMESTAMP;</date>
16
17
<authorgroup>
17
18
<author>
18
19
<firstname>Björn</firstname>
19
20
<surname>Påhlsson</surname>
20
21
<address>
21
<email>belorn@fukt.bsnet.se</email>
22
<email>belorn@recompile.se</email>
22
23
</address>
23
24
</author>
24
25
<author>
25
26
<firstname>Teddy</firstname>
26
27
<surname>Hogeborn</surname>
27
28
<address>
28
<email>teddy@fukt.bsnet.se</email>
29
<email>teddy@recompile.se</email>
29
30
</address>
30
31
</author>
31
32
</authorgroup>
32
33
<copyright>
33
34
<year>2008</year>
35
<year>2009</year>
36
<year>2010</year>
37
<year>2011</year>
38
<year>2012</year>
39
<year>2013</year>
40
<year>2014</year>
41
<year>2015</year>
42
<year>2016</year>
43
<year>2017</year>
44
<year>2018</year>
45
<year>2019</year>
34
46
<holder>Teddy Hogeborn</holder>
35
47
<holder>Björn Påhlsson</holder>
36
48
</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>
49
<xi:include href="legalnotice.xml"/>
60
50
</refentryinfo>
61
51
62
52
<refmeta>
63
53
<refentrytitle>&COMMANDNAME;</refentrytitle>
64
54
<manvolnum>8</manvolnum>
70
60
Gives encrypted passwords to authenticated Mandos clients
71
61
</refpurpose>
72
62
</refnamediv>
73
63
74
64
<refsynopsisdiv>
75
65
<cmdsynopsis>
76
66
<command>&COMMANDNAME;</command>
105
95
<replaceable>DIRECTORY</replaceable></option></arg>
106
96
<sbr/>
107
97
<arg><option>--debug</option></arg>
98
<sbr/>
99
<arg><option>--debuglevel
100
<replaceable>LEVEL</replaceable></option></arg>
101
<sbr/>
102
<arg><option>--no-dbus</option></arg>
103
<sbr/>
104
<arg><option>--no-ipv6</option></arg>
105
<sbr/>
106
<arg><option>--no-restore</option></arg>
107
<sbr/>
108
<arg><option>--statedir
109
<replaceable>DIRECTORY</replaceable></option></arg>
110
<sbr/>
111
<arg><option>--socket
112
<replaceable>FD</replaceable></option></arg>
113
<sbr/>
114
<arg><option>--foreground</option></arg>
115
<sbr/>
116
<arg><option>--no-zeroconf</option></arg>
108
117
</cmdsynopsis>
109
118
<cmdsynopsis>
110
119
<command>&COMMANDNAME;</command>
122
131
<arg choice="plain"><option>--check</option></arg>
123
132
</cmdsynopsis>
124
133
</refsynopsisdiv>
125
134
126
135
<refsect1 id="description">
127
136
<title>DESCRIPTION</title>
128
137
<para>
129
138
<command>&COMMANDNAME;</command> is a server daemon which
130
handles incoming request for passwords for a pre-defined list of
131
client host computers. The Mandos server uses Zeroconf to
132
announce itself on the local network, and uses TLS to
133
communicate securely with and to authenticate the clients. The
134
Mandos server uses IPv6 to allow Mandos clients to use IPv6
135
link-local addresses, since the clients will probably not have
136
any other addresses configured (see <xref linkend="overview"/>).
137
Any authenticated client is then given the stored pre-encrypted
138
password for that specific client.
139
handles incoming requests for passwords for a pre-defined list
140
of client host computers. For an introduction, see
141
<citerefentry><refentrytitle>intro</refentrytitle>
142
<manvolnum>8mandos</manvolnum></citerefentry>. The Mandos server
143
uses Zeroconf to announce itself on the local network, and uses
144
TLS to communicate securely with and to authenticate the
145
clients. The Mandos server uses IPv6 to allow Mandos clients to
146
use IPv6 link-local addresses, since the clients will probably
147
not have any other addresses configured (see <xref
148
linkend="overview"/>). Any authenticated client is then given
149
the stored pre-encrypted password for that specific client.
139
150
</para>
140
141
151
</refsect1>
142
152
143
153
<refsect1 id="purpose">
144
154
<title>PURPOSE</title>
145
146
155
<para>
147
156
The purpose of this is to enable <emphasis>remote and unattended
148
157
rebooting</emphasis> of client host computer with an
149
158
<emphasis>encrypted root file system</emphasis>. See <xref
150
159
linkend="overview"/> for details.
151
160
</para>
152
153
161
</refsect1>
154
162
155
163
<refsect1 id="options">
156
164
<title>OPTIONS</title>
157
158
165
<variablelist>
159
166
<varlistentry>
160
167
<term><option>--help</option></term>
212
219
<xi:include href="mandos-options.xml" xpointer="debug"/>
213
220
</listitem>
214
221
</varlistentry>
215
222
223
<varlistentry>
224
<term><option>--debuglevel
225
<replaceable>LEVEL</replaceable></option></term>
226
<listitem>
227
<para>
228
Set the debugging log level.
229
<replaceable>LEVEL</replaceable> is a string, one of
230
<quote><literal>CRITICAL</literal></quote>,
231
<quote><literal>ERROR</literal></quote>,
232
<quote><literal>WARNING</literal></quote>,
233
<quote><literal>INFO</literal></quote>, or
234
<quote><literal>DEBUG</literal></quote>, in order of
235
increasing verbosity. The default level is
236
<quote><literal>WARNING</literal></quote>.
237
</para>
238
</listitem>
239
</varlistentry>
240
216
241
<varlistentry>
217
242
<term><option>--priority <replaceable>
218
243
PRIORITY</replaceable></option></term>
220
245
<xi:include href="mandos-options.xml" xpointer="priority"/>
221
246
</listitem>
222
247
</varlistentry>
223
248
224
249
<varlistentry>
225
250
<term><option>--servicename
226
251
<replaceable>NAME</replaceable></option></term>
229
254
xpointer="servicename"/>
230
255
</listitem>
231
256
</varlistentry>
232
257
233
258
<varlistentry>
234
259
<term><option>--configdir
235
260
<replaceable>DIRECTORY</replaceable></option></term>
244
269
</para>
245
270
</listitem>
246
271
</varlistentry>
247
272
248
273
<varlistentry>
249
274
<term><option>--version</option></term>
250
275
<listitem>
253
278
</para>
254
279
</listitem>
255
280
</varlistentry>
281
282
<varlistentry>
283
<term><option>--no-dbus</option></term>
284
<listitem>
285
<xi:include href="mandos-options.xml" xpointer="dbus"/>
286
<para>
287
See also <xref linkend="dbus_interface"/>.
288
</para>
289
</listitem>
290
</varlistentry>
291
292
<varlistentry>
293
<term><option>--no-ipv6</option></term>
294
<listitem>
295
<xi:include href="mandos-options.xml" xpointer="ipv6"/>
296
</listitem>
297
</varlistentry>
298
299
<varlistentry>
300
<term><option>--no-restore</option></term>
301
<listitem>
302
<xi:include href="mandos-options.xml" xpointer="restore"/>
303
<para>
304
See also <xref linkend="persistent_state"/>.
305
</para>
306
</listitem>
307
</varlistentry>
308
309
<varlistentry>
310
<term><option>--statedir
311
<replaceable>DIRECTORY</replaceable></option></term>
312
<listitem>
313
<xi:include href="mandos-options.xml" xpointer="statedir"/>
314
</listitem>
315
</varlistentry>
316
317
<varlistentry>
318
<term><option>--socket
319
<replaceable>FD</replaceable></option></term>
320
<listitem>
321
<xi:include href="mandos-options.xml" xpointer="socket"/>
322
</listitem>
323
</varlistentry>
324
325
<varlistentry>
326
<term><option>--foreground</option></term>
327
<listitem>
328
<xi:include href="mandos-options.xml"
329
xpointer="foreground"/>
330
</listitem>
331
</varlistentry>
332
333
<varlistentry>
334
<term><option>--no-zeroconf</option></term>
335
<listitem>
336
<xi:include href="mandos-options.xml" xpointer="zeroconf"/>
337
</listitem>
338
</varlistentry>
339
256
340
</variablelist>
257
341
</refsect1>
258
342
259
343
<refsect1 id="overview">
260
344
<title>OVERVIEW</title>
261
345
<xi:include href="overview.xml"/>
262
346
<para>
263
347
This program is the server part. It is a normal server program
264
348
and will run in a normal system environment, not in an initial
265
RAM disk environment.
349
<acronym>RAM</acronym> disk environment.
266
350
</para>
267
351
</refsect1>
268
352
269
353
<refsect1 id="protocol">
270
354
<title>NETWORK PROTOCOL</title>
271
355
<para>
278
362
start a TLS protocol handshake with a slight quirk: the Mandos
279
363
server program acts as a TLS <quote>client</quote> while the
280
364
connecting Mandos client acts as a TLS <quote>server</quote>.
281
The Mandos client must supply an OpenPGP certificate, and the
282
fingerprint of this certificate is used by the Mandos server to
283
look up (in a list read from <filename>clients.conf</filename>
284
at start time) which binary blob to give the client. No other
285
authentication or authorization is done by the server.
365
The Mandos client must supply a TLS public key, and the key ID
366
of this public key is used by the Mandos server to look up (in a
367
list read from <filename>clients.conf</filename> at start time)
368
which binary blob to give the client. No other authentication
369
or authorization is done by the server.
286
370
</para>
287
371
<table>
288
372
<title>Mandos Protocol (Version 1)</title><tgroup cols="3"><thead>
308
392
</emphasis></entry>
309
393
</row>
310
394
<row>
311
<entry>OpenPGP public key (part of TLS handshake)</entry>
395
<entry>Public key (part of TLS handshake)</entry>
312
396
<entry>-><!-- → --></entry>
313
397
</row>
314
398
<row>
323
407
</row>
324
408
</tbody></tgroup></table>
325
409
</refsect1>
326
410
327
411
<refsect1 id="checking">
328
412
<title>CHECKING</title>
329
413
<para>
330
414
The server will, by default, continually check that the clients
331
415
are still up. If a client has not been confirmed as being up
332
416
for some time, the client is assumed to be compromised and is no
333
longer eligible to receive the encrypted password. The timeout,
334
checker program, and interval between checks can be configured
335
both globally and per client; see <citerefentry>
417
longer eligible to receive the encrypted password. (Manual
418
intervention is required to re-enable a client.) The timeout,
419
extended timeout, checker program, and interval between checks
420
can be configured both globally and per client; see
421
<citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
422
<manvolnum>5</manvolnum></citerefentry>.
423
</para>
424
</refsect1>
425
426
<refsect1 id="approval">
427
<title>APPROVAL</title>
428
<para>
429
The server can be configured to require manual approval for a
430
client before it is sent its secret. The delay to wait for such
431
approval and the default action (approve or deny) can be
432
configured both globally and per client; see <citerefentry>
336
433
<refentrytitle>mandos-clients.conf</refentrytitle>
337
<manvolnum>5</manvolnum></citerefentry>.
338
</para>
434
<manvolnum>5</manvolnum></citerefentry>. By default all clients
435
will be approved immediately without delay.
436
</para>
437
<para>
438
This can be used to deny a client its secret if not manually
439
approved within a specified time. It can also be used to make
440
the server delay before giving a client its secret, allowing
441
optional manual denying of this specific client.
442
</para>
443
339
444
</refsect1>
340
445
341
446
<refsect1 id="logging">
342
447
<title>LOGGING</title>
343
448
<para>
344
449
The server will send log message with various severity levels to
345
<filename>/dev/log</filename>. With the
450
<filename class="devicefile">/dev/log</filename>. With the
346
451
<option>--debug</option> option, it will log even more messages,
347
452
and also show them on the console.
348
453
</para>
349
454
</refsect1>
350
455
456
<refsect1 id="persistent_state">
457
<title>PERSISTENT STATE</title>
458
<para>
459
Client settings, initially read from
460
<filename>clients.conf</filename>, are persistent across
461
restarts, and run-time changes will override settings in
462
<filename>clients.conf</filename>. However, if a setting is
463
<emphasis>changed</emphasis> (or a client added, or removed) in
464
<filename>clients.conf</filename>, this will take precedence.
465
</para>
466
</refsect1>
467
468
<refsect1 id="dbus_interface">
469
<title>D-BUS INTERFACE</title>
470
<para>
471
The server will by default provide a D-Bus system bus interface.
472
This interface will only be accessible by the root user or a
473
Mandos-specific user, if such a user exists. For documentation
474
of the D-Bus API, see the file <filename>DBUS-API</filename>.
475
</para>
476
</refsect1>
477
351
478
<refsect1 id="exit_status">
352
479
<title>EXIT STATUS</title>
353
480
<para>
355
482
critical error is encountered.
356
483
</para>
357
484
</refsect1>
358
485
359
486
<refsect1 id="environment">
360
487
<title>ENVIRONMENT</title>
361
488
<variablelist>
375
502
</varlistentry>
376
503
</variablelist>
377
504
</refsect1>
378
379
<refsect1 id="file">
505
506
<refsect1 id="files">
380
507
<title>FILES</title>
381
508
<para>
382
509
Use the <option>--configdir</option> option to change where
405
532
</listitem>
406
533
</varlistentry>
407
534
<varlistentry>
408
<term><filename>/var/run/mandos/mandos.pid</filename></term>
409
<listitem>
410
<para>
411
The file containing the process id of
412
<command>&COMMANDNAME;</command>.
413
</para>
414
</listitem>
415
</varlistentry>
416
<varlistentry>
417
<term><filename>/dev/log</filename></term>
535
<term><filename>/run/mandos.pid</filename></term>
536
<listitem>
537
<para>
538
The file containing the process id of the
539
<command>&COMMANDNAME;</command> process started last.
540
<emphasis >Note:</emphasis> If the <filename
541
class="directory">/run</filename> directory does not
542
exist, <filename>/var/run/mandos.pid</filename> will be
543
used instead.
544
</para>
545
</listitem>
546
</varlistentry>
547
<varlistentry>
548
<term><filename
549
class="directory">/var/lib/mandos</filename></term>
550
<listitem>
551
<para>
552
Directory where persistent state will be saved. Change
553
this with the <option>--statedir</option> option. See
554
also the <option>--no-restore</option> option.
555
</para>
556
</listitem>
557
</varlistentry>
558
<varlistentry>
559
<term><filename class="devicefile">/dev/log</filename></term>
418
560
<listitem>
419
561
<para>
420
562
The Unix domain socket to where local syslog messages are
443
585
backtrace. This could be considered a feature.
444
586
</para>
445
587
<para>
446
Currently, if a client is declared <quote>invalid</quote> due to
447
having timed out, the server does not record this fact onto
448
permanent storage. This has some security implications, see
449
<xref linkend="CLIENTS"/>.
450
</para>
451
<para>
452
There is currently no way of querying the server of the current
453
status of clients, other than analyzing its <systemitem
454
class="service">syslog</systemitem> output.
455
</para>
456
<para>
457
588
There is no fine-grained control over logging and debug output.
458
589
</para>
459
<para>
460
Debug mode is conflated with running in the foreground.
461
</para>
462
<para>
463
The console log messages does not show a timestamp.
464
</para>
590
<xi:include href="bugs.xml"/>
465
591
</refsect1>
466
592
467
593
<refsect1 id="example">
477
603
<informalexample>
478
604
<para>
479
605
Run the server in debug mode, read configuration files from
480
the <filename>~/mandos</filename> directory, and use the
481
Zeroconf service name <quote>Test</quote> to not collide with
482
any other official Mandos server on this host:
606
the <filename class="directory">~/mandos</filename> directory,
607
and use the Zeroconf service name <quote>Test</quote> to not
608
collide with any other official Mandos server on this host:
483
609
</para>
484
610
<para>
485
611
501
627
</para>
502
628
</informalexample>
503
629
</refsect1>
504
630
505
631
<refsect1 id="security">
506
632
<title>SECURITY</title>
507
<refsect2 id="SERVER">
633
<refsect2 id="server">
508
634
<title>SERVER</title>
509
635
<para>
510
636
Running this <command>&COMMANDNAME;</command> server program
511
637
should not in itself present any security risk to the host
512
computer running it. The program does not need any special
513
privileges to run, and is designed to run as a non-root user.
638
computer running it. The program switches to a non-root user
639
soon after startup.
514
640
</para>
515
641
</refsect2>
516
<refsect2 id="CLIENTS">
642
<refsect2 id="clients">
517
643
<title>CLIENTS</title>
518
644
<para>
519
645
The server only gives out its stored data to clients which
520
does have the OpenPGP key of the stored fingerprint. This is
521
guaranteed by the fact that the client sends its OpenPGP
522
public key in the TLS handshake; this ensures it to be
523
genuine. The server computes the fingerprint of the key
524
itself and looks up the fingerprint in its list of
525
clients. The <filename>clients.conf</filename> file (see
646
does have the correct key ID of the stored key ID. This is
647
guaranteed by the fact that the client sends its public key in
648
the TLS handshake; this ensures it to be genuine. The server
649
computes the key ID of the key itself and looks up the key ID
650
in its list of clients. The <filename>clients.conf</filename>
651
file (see
526
652
<citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
527
653
<manvolnum>5</manvolnum></citerefentry>)
528
654
<emphasis>must</emphasis> be made non-readable by anyone
529
except the user running the server.
655
except the user starting the server (usually root).
530
656
</para>
531
657
<para>
532
658
As detailed in <xref linkend="checking"/>, the status of all
534
660
compromised if they are gone for too long.
535
661
</para>
536
662
<para>
537
If a client is compromised, its downtime should be duly noted
538
by the server which would therefore declare the client
539
invalid. But if the server was ever restarted, it would
540
re-read its client list from its configuration file and again
541
regard all clients therein as valid, and hence eligible to
542
receive their passwords. Therefore, be careful when
543
restarting servers if it is suspected that a client has, in
544
fact, been compromised by parties who may now be running a
545
fake Mandos client with the keys from the non-encrypted
546
initial RAM image of the client host. What should be done in
547
that case (if restarting the server program really is
548
necessary) is to stop the server program, edit the
549
configuration file to omit any suspect clients, and restart
550
the server program.
551
</para>
552
<para>
553
663
For more details on client-side security, see
554
<citerefentry><refentrytitle>password-request</refentrytitle>
664
<citerefentry><refentrytitle>mandos-client</refentrytitle>
555
665
<manvolnum>8mandos</manvolnum></citerefentry>.
556
666
</para>
557
667
</refsect2>
558
668
</refsect1>
559
669
560
670
<refsect1 id="see_also">
561
671
<title>SEE ALSO</title>
562
672
<para>
563
<citerefentry>
564
<refentrytitle>mandos-clients.conf</refentrytitle>
565
<manvolnum>5</manvolnum></citerefentry>, <citerefentry>
566
<refentrytitle>mandos.conf</refentrytitle>
567
<manvolnum>5</manvolnum></citerefentry>, <citerefentry>
568
<refentrytitle>password-request</refentrytitle>
569
<manvolnum>8mandos</manvolnum></citerefentry>, <citerefentry>
570
<refentrytitle>sh</refentrytitle><manvolnum>1</manvolnum>
571
</citerefentry>
673
<citerefentry><refentrytitle>intro</refentrytitle>
674
<manvolnum>8mandos</manvolnum></citerefentry>,
675
<citerefentry><refentrytitle>mandos-clients.conf</refentrytitle>
676
<manvolnum>5</manvolnum></citerefentry>,
677
<citerefentry><refentrytitle>mandos.conf</refentrytitle>
678
<manvolnum>5</manvolnum></citerefentry>,
679
<citerefentry><refentrytitle>mandos-client</refentrytitle>
680
<manvolnum>8mandos</manvolnum></citerefentry>,
681
<citerefentry><refentrytitle>sh</refentrytitle>
682
<manvolnum>1</manvolnum></citerefentry>
572
683
</para>
573
684
<variablelist>
574
685
<varlistentry>
584
695
</varlistentry>
585
696
<varlistentry>
586
697
<term>
587
<ulink url="http://www.avahi.org/">Avahi</ulink>
698
<ulink url="https://www.avahi.org/">Avahi</ulink>
588
699
</term>
589
700
<listitem>
590
701
<para>
595
706
</varlistentry>
596
707
<varlistentry>
597
708
<term>
598
<ulink url="http://www.gnu.org/software/gnutls/"
599
>GnuTLS</ulink>
709
<ulink url="https://gnutls.org/">GnuTLS</ulink>
600
710
</term>
601
711
<listitem>
602
712
<para>
603
713
GnuTLS is the library this server uses to implement TLS for
604
714
communicating securely with the client, and at the same time
605
confidently get the client’s public OpenPGP key.
715
confidently get the client’s public key.
606
716
</para>
607
717
</listitem>
608
718
</varlistentry>
629
739
<listitem>
630
740
<para>
631
741
The clients use IPv6 link-local addresses, which are
632
immediately usable since a link-local addresses is
742
immediately usable since a link-local address is
633
743
automatically assigned to a network interfaces when it
634
744
is brought up.
635
745
</para>
640
750
</varlistentry>
641
751
<varlistentry>
642
752
<term>
643
RFC 4346: <citetitle>The Transport Layer Security (TLS)
644
Protocol Version 1.1</citetitle>
753
RFC 5246: <citetitle>The Transport Layer Security (TLS)
754
Protocol Version 1.2</citetitle>
645
755
</term>
646
756
<listitem>
647
757
<para>
648
TLS 1.1 is the protocol implemented by GnuTLS.
758
TLS 1.2 is the protocol implemented by GnuTLS.
649
759
</para>
650
760
</listitem>
651
761
</varlistentry>
661
771
</varlistentry>
662
772
<varlistentry>
663
773
<term>
664
RFC 5081: <citetitle>Using OpenPGP Keys for Transport Layer
665
Security</citetitle>
666
</term>
667
<listitem>
668
<para>
669
This is implemented by GnuTLS and used by this server so
670
that OpenPGP keys can be used.
774
RFC 7250: <citetitle>Using Raw Public Keys in Transport
775
Layer Security (TLS) and Datagram Transport Layer Security
776
(DTLS)</citetitle>
777
</term>
778
<listitem>
779
<para>
780
This is implemented by GnuTLS version 3.6.6 and is, if
781
present, used by this server so that raw public keys can be
782
used.
783
</para>
784
</listitem>
785
</varlistentry>
786
<varlistentry>
787
<term>
788
RFC 6091: <citetitle>Using OpenPGP Keys for Transport Layer
789
Security (TLS) Authentication</citetitle>
790
</term>
791
<listitem>
792
<para>
793
This is implemented by GnuTLS before version 3.6.0 and is,
794
if present, used by this server so that OpenPGP keys can be
795
used.
671
796
</para>
672
797
</listitem>
673
798
</varlistentry>
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0