summaryrefslogtreecommitdiff
path: root/interface-definitions/interfaces_openvpn.xml.in
blob: 46c22ac447142b54e0b81e1c245015d3632719d3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
<?xml version="1.0"?>
<interfaceDefinition>
  <node name="interfaces">
    <children>
      <tagNode name="openvpn" owner="${vyos_conf_scripts_dir}/interfaces_openvpn.py">
        <properties>
          <help>OpenVPN Tunnel Interface</help>
          <priority>460</priority>
          <constraint>
            <regex>vtun[0-9]+</regex>
          </constraint>
          <constraintErrorMessage>OpenVPN tunnel interface must be named vtunN</constraintErrorMessage>
          <valueHelp>
            <format>vtunN</format>
            <description>OpenVPN interface name</description>
          </valueHelp>
        </properties>
        <children>
          #include <include/interface/authentication.xml.i>
          #include <include/generic-description.xml.i>
          <leafNode name="device-type">
            <properties>
              <help>OpenVPN interface device-type</help>
              <completionHelp>
                <list>tun tap</list>
              </completionHelp>
              <valueHelp>
                <format>tun</format>
                <description>TUN device, required for OSI layer 3</description>
              </valueHelp>
              <valueHelp>
                <format>tap</format>
                <description>TAP device, required for OSI layer 2</description>
              </valueHelp>
              <constraint>
                <regex>(tun|tap)</regex>
              </constraint>
            </properties>
            <defaultValue>tun</defaultValue>
          </leafNode>
          #include <include/interface/disable.xml.i>
          <node name="encryption">
            <properties>
              <help>Data Encryption settings</help>
            </properties>
            <children>
              <leafNode name="cipher">
                <properties>
                  <help>Standard Data Encryption Algorithm</help>
                  <completionHelp>
                    <list>none 3des aes128 aes128gcm aes192 aes192gcm aes256 aes256gcm</list>
                  </completionHelp>
                  <valueHelp>
                    <format>none</format>
                    <description>Disable encryption</description>
                  </valueHelp>
                  <valueHelp>
                    <format>3des</format>
                    <description>DES algorithm with triple encryption</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes128</format>
                    <description>AES algorithm with 128-bit key CBC</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes128gcm</format>
                    <description>AES algorithm with 128-bit key GCM</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes192</format>
                    <description>AES algorithm with 192-bit key CBC</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes192gcm</format>
                    <description>AES algorithm with 192-bit key GCM</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes256</format>
                    <description>AES algorithm with 256-bit key CBC</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes256gcm</format>
                    <description>AES algorithm with 256-bit key GCM</description>
                  </valueHelp>
                  <constraint>
                    <regex>(none|3des|aes128|aes128gcm|aes192|aes192gcm|aes256|aes256gcm)</regex>
                  </constraint>
                </properties>
              </leafNode>
              <leafNode name="ncp-ciphers">
                <properties>
                  <help>Cipher negotiation list for use in server or client mode</help>
                  <completionHelp>
                    <list>none 3des aes128 aes128gcm aes192 aes192gcm aes256 aes256gcm</list>
                  </completionHelp>
                  <valueHelp>
                    <format>none</format>
                    <description>Disable encryption</description>
                  </valueHelp>
                  <valueHelp>
                    <format>3des</format>
                    <description>DES algorithm with triple encryption</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes128</format>
                    <description>AES algorithm with 128-bit key CBC</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes128gcm</format>
                    <description>AES algorithm with 128-bit key GCM</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes192</format>
                    <description>AES algorithm with 192-bit key CBC</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes192gcm</format>
                    <description>AES algorithm with 192-bit key GCM</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes256</format>
                    <description>AES algorithm with 256-bit key CBC</description>
                  </valueHelp>
                  <valueHelp>
                    <format>aes256gcm</format>
                    <description>AES algorithm with 256-bit key GCM</description>
                  </valueHelp>
                  <constraint>
                    <regex>(none|3des|aes128|aes128gcm|aes192|aes192gcm|aes256|aes256gcm)</regex>
                  </constraint>
                  <multi/>
                </properties>
              </leafNode>
            </children>
          </node>
          #include <include/interface/ipv4-options.xml.i>
          #include <include/interface/ipv6-options.xml.i>
          #include <include/interface/mirror.xml.i>
          <leafNode name="hash">
            <properties>
              <help>Hashing Algorithm</help>
              <completionHelp>
                <list>md5 sha1 sha256 sha384 sha512</list>
              </completionHelp>
              <valueHelp>
                <format>md5</format>
                <description>MD5 algorithm</description>
              </valueHelp>
              <valueHelp>
                <format>sha1</format>
                <description>SHA-1 algorithm</description>
              </valueHelp>
              <valueHelp>
                <format>sha256</format>
                <description>SHA-256 algorithm</description>
              </valueHelp>
              <valueHelp>
                <format>sha384</format>
                <description>SHA-384 algorithm</description>
              </valueHelp>
              <valueHelp>
                <format>sha512</format>
                <description>SHA-512 algorithm</description>
              </valueHelp>
              <constraint>
                <regex>(md5|sha1|sha256|sha384|sha512)</regex>
              </constraint>
            </properties>
          </leafNode>
          <node name="keep-alive">
            <properties>
              <help>Keepalive helper options</help>
            </properties>
            <children>
              <leafNode name="failure-count">
                <properties>
                  <help>Maximum number of keepalive packet failures</help>
                  <valueHelp>
                    <format>u32:0-1000</format>
                    <description>Maximum number of keepalive packet failures</description>
                  </valueHelp>
                  <constraint>
                    <validator name="numeric" argument="--range 0-1000"/>
                  </constraint>
                </properties>
                <defaultValue>60</defaultValue>
              </leafNode>
              <leafNode name="interval">
                <properties>
                  <help>Keepalive packet interval in seconds</help>
                  <valueHelp>
                    <format>u32:0-600</format>
                    <description>Keepalive packet interval (seconds)</description>
                  </valueHelp>
                  <constraint>
                    <validator name="numeric" argument="--range 0-600"/>
                  </constraint>
                </properties>
                <defaultValue>10</defaultValue>
              </leafNode>
            </children>
          </node>
          <tagNode name="local-address">
            <properties>
              <help>Local IP address of tunnel (IPv4 or IPv6)</help>
              <constraint>
                <validator name="ip-address"/>
              </constraint>
            </properties>
            <children>
              <leafNode name="subnet-mask">
                <properties>
                  <help>Subnet-mask for local IP address of tunnel (IPv4 only)</help>
                  <constraint>
                    <validator name="ipv4-address"/>
                  </constraint>
                </properties>
              </leafNode>
            </children>
          </tagNode>
          <leafNode name="local-host">
            <properties>
              <help>Local IP address to accept connections (all if not set)</help>
              <valueHelp>
                <format>ipv4</format>
                <description>Local IPv4 address</description>
              </valueHelp>
              <valueHelp>
                <format>ipv6</format>
                <description>Local IPv6 address</description>
              </valueHelp>
              <constraint>
                <validator name="ip-address"/>
              </constraint>
            </properties>
          </leafNode>
          <leafNode name="local-port">
            <properties>
              <help>Local port number to accept connections</help>
              <valueHelp>
                <format>u32:1-65535</format>
                <description>Numeric IP port</description>
              </valueHelp>
              <constraint>
                <validator name="numeric" argument="--range 1-65535"/>
              </constraint>
            </properties>
          </leafNode>
          <leafNode name="mode">
            <properties>
              <help>OpenVPN mode of operation</help>
              <completionHelp>
                <list>site-to-site client server</list>
              </completionHelp>
              <valueHelp>
                <format>site-to-site</format>
                <description>Site-to-site mode</description>
              </valueHelp>
              <valueHelp>
                <format>client</format>
                <description>Client in client-server mode</description>
              </valueHelp>
              <valueHelp>
                <format>server</format>
                <description>Server in client-server mode</description>
              </valueHelp>
              <constraint>
                <regex>(site-to-site|client|server)</regex>
              </constraint>
            </properties>
          </leafNode>
          <node name="offload">
            <properties>
              <help>Configurable offload options</help>
            </properties>
            <children>
              <leafNode name="dco">
                <properties>
                  <help>Enable data channel offload on this interface</help>
                  <valueless/>
                </properties>
              </leafNode>
            </children>
          </node>
          <leafNode name="openvpn-option">
            <properties>
              <help>Additional OpenVPN options. You must use the syntax of openvpn.conf in this text-field. Using this without proper knowledge may result in a crashed OpenVPN server. Check system log to look for errors.</help>
              <multi/>
            </properties>
          </leafNode>
          <leafNode name="persistent-tunnel">
            <properties>
              <help>Do not close and reopen interface (TUN/TAP device) on client restarts</help>
              <valueless/>
            </properties>
          </leafNode>
          <leafNode name="protocol">
            <properties>
              <help>OpenVPN communication protocol</help>
              <completionHelp>
                <list>udp tcp-passive tcp-active</list>
              </completionHelp>
              <valueHelp>
                <format>udp</format>
                <description>UDP</description>
              </valueHelp>
              <valueHelp>
                <format>tcp-passive</format>
                <description>TCP and accepts connections passively</description>
              </valueHelp>
              <valueHelp>
                <format>tcp-active</format>
                <description>TCP and initiates connections actively</description>
              </valueHelp>
              <constraint>
                <regex>(udp|tcp-passive|tcp-active)</regex>
              </constraint>
            </properties>
            <defaultValue>udp</defaultValue>
          </leafNode>
          <leafNode name="remote-address">
            <properties>
              <help>IP address of remote end of tunnel</help>
              <valueHelp>
                <format>ipv4</format>
                <description>Remote end IPv4 address</description>
              </valueHelp>
              <valueHelp>
                <format>ipv6</format>
                <description>Remote end IPv6 address</description>
              </valueHelp>
              <constraint>
                <validator name="ip-address"/>
              </constraint>
              <multi/>
            </properties>
          </leafNode>
          <leafNode name="remote-host">
            <properties>
              <help>Remote host to connect to (dynamic if not set)</help>
              <valueHelp>
                <format>ipv4</format>
                <description>IPv4 address of remote host</description>
              </valueHelp>
              <valueHelp>
                <format>ipv6</format>
                <description>IPv6 address of remote host</description>
              </valueHelp>
              <valueHelp>
                <format>txt</format>
                <description>Hostname of remote host</description>
              </valueHelp>
              <multi/>
            </properties>
          </leafNode>
          <leafNode name="remote-port">
            <properties>
              <help>Remote port number to connect to</help>
              <valueHelp>
                <format>u32:1-65535</format>
                <description>Numeric IP port</description>
              </valueHelp>
              <constraint>
                <validator name="numeric" argument="--range 1-65535"/>
              </constraint>
            </properties>
          </leafNode>
          <node name="replace-default-route">
            <properties>
              <help>OpenVPN tunnel to be used as the default route</help>
            </properties>
            <children>
              <leafNode name="local">
                <properties>
                  <help>Tunnel endpoints are on the same subnet</help>
                </properties>
              </leafNode>
            </children>
          </node>
          <node name="server">
            <properties>
              <help>Server-mode options</help>
            </properties>
            <children>
              <tagNode name="client">
                <properties>
                  <help>Client-specific settings</help>
                  <valueHelp>
                    <format>name</format>
                    <description>Client common-name in the certificate</description>
                  </valueHelp>
                </properties>
                <children>
                  #include <include/generic-disable-node.xml.i>
                  <leafNode name="ip">
                    <properties>
                      <help>IP address of the client</help>
                      <valueHelp>
                        <format>ipv4</format>
                        <description>Client IPv4 address</description>
                      </valueHelp>
                      <valueHelp>
                        <format>ipv6</format>
                        <description>Client IPv6 address</description>
                      </valueHelp>
                      <constraint>
                        <validator name="ip-address"/>
                      </constraint>
                      <multi/>
                    </properties>
                  </leafNode>
                  <leafNode name="push-route">
                    <properties>
                      <help>Route to be pushed to the client</help>
                      <valueHelp>
                        <format>ipv4net</format>
                        <description>IPv4 network and prefix length</description>
                      </valueHelp>
                      <valueHelp>
                        <format>ipv6net</format>
                        <description>IPv6 network and prefix length</description>
                      </valueHelp>
                      <constraint>
                        <validator name="ip-prefix"/>
                      </constraint>
                      <multi/>
                    </properties>
                  </leafNode>
                  <leafNode name="subnet">
                    <properties>
                      <help>Subnet belonging to the client (iroute)</help>
                      <valueHelp>
                        <format>ipv4net</format>
                        <description>IPv4 network and prefix length belonging to the client</description>
                      </valueHelp>
                      <valueHelp>
                        <format>ipv6net</format>
                        <description>IPv6 network and prefix length belonging to the client</description>
                      </valueHelp>
                      <constraint>
                        <validator name="ip-prefix"/>
                      </constraint>
                      <multi/>
                    </properties>
                  </leafNode>
                </children>
              </tagNode>
              <node name="server-bridge">
                <properties>
                  <help>Used with TAP device (layer 2)</help>
                </properties>
                <children>
                  #include <include/generic-disable-node.xml.i>
                  <leafNode name="start">
                    <properties>
                      <help>First IP address in the pool</help>
                      <constraint>
                        <validator name="ipv4-address"/>
                      </constraint>
                      <valueHelp>
                        <format>ipv4</format>
                        <description>IPv4 address</description>
                      </valueHelp>
                    </properties>
                  </leafNode>
                  <leafNode name="stop">
                    <properties>
                      <help>Last IP address in the pool</help>
                      <constraint>
                        <validator name="ipv4-address"/>
                      </constraint>
                      <valueHelp>
                        <format>ipv4</format>
                        <description>IPv4 address</description>
                      </valueHelp>
                    </properties>
                  </leafNode>
                  <leafNode name="subnet-mask">
                    <properties>
                      <help>Subnet mask pushed to dynamic clients.</help>
                      <constraint>
                        <validator name="ipv4-address"/>
                      </constraint>
                      <valueHelp>
                        <format>ipv4</format>
                        <description>IPv4 subnet mask</description>
                      </valueHelp>
                    </properties>
                  </leafNode>
                  <leafNode name="gateway">
                    <properties>
                      <help>Gateway IP address</help>
                      <constraint>
                        <validator name="ipv4-address"/>
                      </constraint>
                      <valueHelp>
                        <format>ipv4</format>
                        <description>IPv4 address</description>
                      </valueHelp>
                    </properties>
                  </leafNode>
                </children>
              </node>
              <node name="client-ip-pool">
                <properties>
                  <help>Pool of client IPv4 addresses</help>
                </properties>
                <children>
                  #include <include/generic-disable-node.xml.i>
                  <leafNode name="start">
                    <properties>
                      <help>First IP address in the pool</help>
                      <constraint>
                        <validator name="ipv4-address"/>
                      </constraint>
                      <valueHelp>
                        <format>ipv4</format>
                        <description>IPv4 address</description>
                      </valueHelp>
                    </properties>
                  </leafNode>
                  <leafNode name="stop">
                    <properties>
                      <help>Last IP address in the pool</help>
                      <constraint>
                        <validator name="ipv4-address"/>
                      </constraint>
                      <valueHelp>
                        <format>ipv4</format>
                        <description>IPv4 address</description>
                      </valueHelp>
                    </properties>
                  </leafNode>
                  <leafNode name="subnet-mask">
                    <properties>
                      <help>Subnet mask pushed to dynamic clients. If not set the server subnet mask will be used. Only used with topology subnet or device type tap. Not used with bridged interfaces.</help>
                      <constraint>
                        <validator name="ipv4-address"/>
                      </constraint>
                      <valueHelp>
                        <format>ipv4</format>
                        <description>IPv4 subnet mask</description>
                      </valueHelp>
                    </properties>
                  </leafNode>
                </children>
              </node>
              <node name="client-ipv6-pool">
                <properties>
                  <help>Pool of client IPv6 addresses</help>
                </properties>
                <children>
                  <leafNode name="base">
                    <properties>
                      <help>Client IPv6 pool base address with optional prefix length</help>
                      <valueHelp>
                        <format>ipv6net</format>
                        <description>Client IPv6 pool base address with optional prefix length (defaults: base = server subnet + 0x1000, prefix length = server prefix length)</description>
                      </valueHelp>
                      <constraint>
                        <validator name="ipv6"/>
                      </constraint>
                    </properties>
                  </leafNode>
                  #include <include/generic-disable-node.xml.i>
                </children>
              </node>
              <leafNode name="domain-name">
                <properties>
                  <help>DNS suffix to be pushed to all clients</help>
                  <valueHelp>
                    <format>txt</format>
                    <description>Domain Name Server suffix</description>
                  </valueHelp>
                </properties>
              </leafNode>
              <leafNode name="max-connections">
                <properties>
                  <help>Number of maximum client connections</help>
                  <valueHelp>
                    <format>u32:1-4096</format>
                    <description>Number of concurrent clients</description>
                  </valueHelp>
                  <constraint>
                    <validator name="numeric" argument="--range 1-4096"/>
                  </constraint>
                </properties>
              </leafNode>
              #include <include/name-server-ipv4-ipv6.xml.i>
              <tagNode name="push-route">
                <properties>
                  <help>Route to be pushed to all clients</help>
                  <valueHelp>
                    <format>ipv4net</format>
                    <description>IPv4 network and prefix length</description>
                  </valueHelp>
                  <valueHelp>
                    <format>ipv6net</format>
                    <description>IPv6 network and prefix length</description>
                  </valueHelp>
                  <constraint>
                    <validator name="ip-prefix"/>
                  </constraint>
                </properties>
                <children>
                  <leafNode name="metric">
                    <properties>
                      <help>Set metric for this route</help>
                      <valueHelp>
                        <format>u32:0-4294967295</format>
                        <description>Metric for this route</description>
                      </valueHelp>
                      <constraint>
                        <validator name="numeric" argument="--range 0-4294967295"/>
                      </constraint>
                    </properties>
                    <defaultValue>0</defaultValue>
                  </leafNode>
                </children>
              </tagNode>
              <leafNode name="reject-unconfigured-clients">
                <properties>
                  <help>Reject connections from clients that are not explicitly configured</help>
                  <valueless/>
                </properties>
              </leafNode>
              <leafNode name="subnet">
                <properties>
                  <help>Server-mode subnet (from which client IPs are allocated)</help>
                  <valueHelp>
                    <format>ipv4net</format>
                    <description>IPv4 network and prefix length</description>
                  </valueHelp>
                  <valueHelp>
                    <format>ipv6net</format>
                    <description>IPv6 network and prefix length</description>
                  </valueHelp>
                  <constraint>
                    <validator name="ip-prefix"/>
                  </constraint>
                  <multi/>
                </properties>
              </leafNode>
              <leafNode name="topology">
                <properties>
                  <help>Topology for clients</help>
                  <completionHelp>
                    <list>subnet point-to-point net30</list>
                  </completionHelp>
                  <valueHelp>
                    <format>subnet</format>
                    <description>Subnet topology (recommended)</description>
                  </valueHelp>
                  <valueHelp>
                    <format>point-to-point</format>
                    <description>Point-to-point topology</description>
                  </valueHelp>
                  <valueHelp>
                    <format>net30</format>
                    <description>net30 topology (deprecated)</description>
                  </valueHelp>
                  <constraint>
                    <regex>(subnet|point-to-point|net30)</regex>
                  </constraint>
                </properties>
                <defaultValue>subnet</defaultValue>
              </leafNode>
              <node name="mfa">
                <properties>
                  <help>multi-factor authentication</help>
                </properties>
                <children>
                  <node name="totp">
                    <properties>
                      <help>Time-based one-time passwords</help>
                    </properties>
                    <children>
                      <leafNode name="slop">
                        <properties>
                          <help>Maximum allowed clock slop in seconds</help>
                          <valueHelp>
                            <format>1-65535</format>
                            <description>Seconds</description>
                          </valueHelp>
                          <constraint>
                            <validator name="numeric" argument="--range 1-65535"/>
                          </constraint>
                        </properties>
                        <defaultValue>180</defaultValue>
                      </leafNode>
                      <leafNode name="drift">
                        <properties>
                          <help>Time drift in seconds</help>
                          <valueHelp>
                            <format>1-65535</format>
                            <description>Seconds</description>
                          </valueHelp>
                          <constraint>
                            <validator name="numeric" argument="--range 1-65535"/>
                          </constraint>
                        </properties>
                        <defaultValue>0</defaultValue>
                      </leafNode>
                      <leafNode name="step">
                        <properties>
                          <help>Step value for totp in seconds</help>
                          <valueHelp>
                            <format>1-65535</format>
                            <description>Seconds</description>
                          </valueHelp>
                          <constraint>
                            <validator name="numeric" argument="--range 1-65535"/>
                          </constraint>
                        </properties>
                        <defaultValue>30</defaultValue>
                      </leafNode>
                      <leafNode name="digits">
                        <properties>
                          <help>Number of digits to use for totp hash</help>
                          <valueHelp>
                            <format>1-65535</format>
                            <description>Digits</description>
                          </valueHelp>
                          <constraint>
                            <validator name="numeric" argument="--range 1-65535"/>
                          </constraint>
                        </properties>
                        <defaultValue>6</defaultValue>
                      </leafNode>
                      <leafNode name="challenge">
                        <properties>
                          <help>Expect password as result of a challenge response protocol</help>
                          <completionHelp>
                            <list>disable enable</list>
                          </completionHelp>
                          <valueHelp>
                            <format>disable</format>
                            <description>Disable challenge-response</description>
                          </valueHelp>
                          <valueHelp>
                            <format>enable</format>
                            <description>Enable chalenge-response</description>
                          </valueHelp>
                          <constraint>
                            <regex>(disable|enable)</regex>
                          </constraint>
                        </properties>
                        <defaultValue>enable</defaultValue>
                      </leafNode>
                   </children>
                  </node>
               </children>
              </node>
            </children>
          </node>
          <leafNode name="shared-secret-key">
            <properties>
              <help>Secret key shared with remote end of tunnel</help>
              <completionHelp>
                <path>pki openvpn shared-secret</path>
              </completionHelp>
            </properties>
          </leafNode>
          <node name="tls">
            <properties>
              <help>Transport Layer Security (TLS) options</help>
            </properties>
            <children>
              <leafNode name="auth-key">
                <properties>
                  <help>TLS shared secret key for tls-auth</help>
                  <completionHelp>
                    <path>pki openvpn shared-secret</path>
                  </completionHelp>
                </properties>
              </leafNode>
              #include <include/pki/certificate.xml.i>
              #include <include/pki/ca-certificate-multi.xml.i>
              #include <include/pki/dh-params.xml.i>
              <leafNode name="crypt-key">
                <properties>
                  <help>Static key to use to authenticate control channel</help>
                  <completionHelp>
                    <path>pki openvpn shared-secret</path>
                  </completionHelp>
                </properties>
              </leafNode>
              <leafNode name="peer-fingerprint">
                <properties>
                  <multi/>
                  <help>Peer certificate SHA256 fingerprint</help>
                  <constraint>
                    <regex>[0-9a-fA-F]{2}:([0-9a-fA-F]{2}:){30}[0-9a-fA-F]{2}</regex>
                  </constraint>
                  <constraintErrorMessage>Peer certificate fingerprint must be a colon-separated SHA256 hex digest</constraintErrorMessage>
                </properties>
              </leafNode>
              #include <include/tls-version-min.xml.i>
              <leafNode name="role">
                <properties>
                  <help>TLS negotiation role</help>
                  <completionHelp>
                    <list>active passive</list>
                  </completionHelp>
                  <valueHelp>
                    <format>active</format>
                    <description>Initiate TLS negotiation actively</description>
                  </valueHelp>
                  <valueHelp>
                    <format>passive</format>
                    <description>Wait for incoming TLS connection</description>
                  </valueHelp>
                  <constraint>
                    <regex>(active|passive)</regex>
                  </constraint>
                </properties>
              </leafNode>
            </children>
          </node>
          <leafNode name="use-lzo-compression">
            <properties>
              <help>Use fast LZO compression on this TUN/TAP interface</help>
              <valueless/>
            </properties>
          </leafNode>
          #include <include/interface/redirect.xml.i>
          #include <include/interface/vrf.xml.i>
        </children>
      </tagNode>
    </children>
  </node>
</interfaceDefinition>