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
|
<?php
/*
vpn_l2tp.php
*/
/* ====================================================================
* Copyright (c) 2004-2015 Electric Sheep Fencing, LLC. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgment:
* "This product includes software developed by the pfSense Project
* for use in the pfSense software distribution. (http://www.pfsense.org/).
*
* 4. The names "pfSense" and "pfSense Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* coreteam@pfsense.org.
*
* 5. Products derived from this software may not be called "pfSense"
* nor may "pfSense" appear in their names without prior written
* permission of the Electric Sheep Fencing, LLC.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
*
* "This product includes software developed by the pfSense Project
* for use in the pfSense software distribution (http://www.pfsense.org/).
*
* THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE pfSense PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ====================================================================
*
*/
##|+PRIV
##|*IDENT=page-vpn-vpnl2tp
##|*NAME=VPN: VPN L2TP
##|*DESCR=Allow access to the 'VPN: VPN L2TP' page.
##|*MATCH=vpn_l2tp.php*
##|-PRIV
require("guiconfig.inc");
require_once("vpn.inc");
if (!is_array($config['l2tp']['radius'])) {
$config['l2tp']['radius'] = array();
}
$l2tpcfg = &$config['l2tp'];
$pconfig['remoteip'] = $l2tpcfg['remoteip'];
$pconfig['localip'] = $l2tpcfg['localip'];
$pconfig['l2tp_subnet'] = $l2tpcfg['l2tp_subnet'];
$pconfig['mode'] = $l2tpcfg['mode'];
$pconfig['interface'] = $l2tpcfg['interface'];
$pconfig['l2tp_dns1'] = $l2tpcfg['dns1'];
$pconfig['l2tp_dns2'] = $l2tpcfg['dns2'];
$pconfig['radiusenable'] = isset($l2tpcfg['radius']['enable']);
$pconfig['radacct_enable'] = isset($l2tpcfg['radius']['accounting']);
$pconfig['radiusserver'] = $l2tpcfg['radius']['server'];
$pconfig['radiussecret'] = $l2tpcfg['radius']['secret'];
$pconfig['radiusissueips'] = $l2tpcfg['radius']['radiusissueips'];
$pconfig['n_l2tp_units'] = $l2tpcfg['n_l2tp_units'];
$pconfig['paporchap'] = $l2tpcfg['paporchap'];
$pconfig['secret'] = $l2tpcfg['secret'];
if ($_POST) {
unset($input_errors);
$pconfig = $_POST;
/* input validation */
if ($_POST['mode'] == "server") {
$reqdfields = explode(" ", "localip remoteip");
$reqdfieldsn = array(gettext("Server address"), gettext("Remote start address"));
if ($_POST['radiusenable']) {
$reqdfields = array_merge($reqdfields, explode(" ", "radiusserver radiussecret"));
$reqdfieldsn = array_merge($reqdfieldsn,
array(gettext("RADIUS server address"), gettext("RADIUS shared secret")));
}
do_input_validation($_POST, $reqdfields, $reqdfieldsn, $input_errors);
if (($_POST['localip'] && !is_ipaddr($_POST['localip']))) {
$input_errors[] = gettext("A valid server address must be specified.");
}
if (is_ipaddr_configured($_POST['localip'])) {
$input_errors[] = gettext("'Server address' parameter should NOT be set to any IP address currently in use on this firewall.");
}
if (($_POST['l2tp_subnet'] && !is_ipaddr($_POST['remoteip']))) {
$input_errors[] = gettext("A valid remote start address must be specified.");
}
if (($_POST['radiusserver'] && !is_ipaddr($_POST['radiusserver']))) {
$input_errors[] = gettext("A valid RADIUS server address must be specified.");
}
/* if this is an AJAX caller then handle via JSON */
if (isAjax() && is_array($input_errors)) {
input_errors2Ajax($input_errors);
exit;
}
if (!$input_errors) {
$_POST['remoteip'] = $pconfig['remoteip'] = gen_subnet($_POST['remoteip'], $_POST['l2tp_subnet']);
$subnet_start = ip2ulong($_POST['remoteip']);
$subnet_end = ip2ulong($_POST['remoteip']) + $_POST['n_l2tp_units'] - 1;
if ((ip2ulong($_POST['localip']) >= $subnet_start) &&
(ip2ulong($_POST['localip']) <= $subnet_end)) {
$input_errors[] = gettext("The specified server address lies in the remote subnet.");
}
if ($_POST['localip'] == get_interface_ip("lan")) {
$input_errors[] = gettext("The specified server address is equal to the LAN interface address.");
}
}
}
/* if this is an AJAX caller then handle via JSON */
if (isAjax() && is_array($input_errors)) {
input_errors2Ajax($input_errors);
exit;
}
if (!$input_errors) {
$l2tpcfg['remoteip'] = $_POST['remoteip'];
$l2tpcfg['localip'] = $_POST['localip'];
$l2tpcfg['l2tp_subnet'] = $_POST['l2tp_subnet'];
$l2tpcfg['mode'] = $_POST['mode'];
$l2tpcfg['interface'] = $_POST['interface'];
$l2tpcfg['n_l2tp_units'] = $_POST['n_l2tp_units'];
$l2tpcfg['radius']['server'] = $_POST['radiusserver'];
$l2tpcfg['radius']['secret'] = $_POST['radiussecret'];
$l2tpcfg['secret'] = $_POST['secret'];
$l2tpcfg['paporchap'] = $_POST['paporchap'];
if ($_POST['l2tp_dns1'] == "") {
if (isset($l2tpcfg['dns1'])) {
unset($l2tpcfg['dns1']);
}
} else {
$l2tpcfg['dns1'] = $_POST['l2tp_dns1'];
}
if ($_POST['l2tp_dns2'] == "") {
if (isset($l2tpcfg['dns2'])) {
unset($l2tpcfg['dns2']);
}
} else {
$l2tpcfg['dns2'] = $_POST['l2tp_dns2'];
}
if ($_POST['radiusenable'] == "yes") {
$l2tpcfg['radius']['enable'] = true;
} else {
unset($l2tpcfg['radius']['enable']);
}
if ($_POST['radacct_enable'] == "yes") {
$l2tpcfg['radius']['accounting'] = true;
} else {
unset($l2tpcfg['radius']['accounting']);
}
if ($_POST['radiusissueips'] == "yes") {
$l2tpcfg['radius']['radiusissueips'] = true;
} else {
unset($l2tpcfg['radius']['radiusissueips']);
}
write_config();
$retval = 0;
$retval = vpn_l2tp_configure();
$savemsg = get_std_save_message($retval);
/* if ajax is calling, give them an update message */
if (isAjax()) {
print_info_box_np($savemsg);
}
}
}
$pgtitle = array(gettext("VPN"), gettext("L2TP"), gettext("Configuration"));
$shortcut_section = "l2tps";
include("head.inc");
if ($input_errors)
print_input_errors($input_errors);
if ($savemsg)
print_info_box($savemsg);
$tab_array = array();
$tab_array[] = array(gettext("Configuration"), true, "vpn_l2tp.php");
$tab_array[] = array(gettext("Users"), false, "vpn_l2tp_users.php");
display_top_tabs($tab_array);
$form = new Form(new Form_Button(
'Submit',
gettext("Save")
));
$section = new Form_Section("Enable L2TP");
$section->addInput(new Form_Checkbox(
'mode',
'Enable',
'Enable LT2P server',
($pconfig['mode'] == "server"),
'server'
));
$form->add($section);
$iflist = array();
$interfaces = get_configured_interface_with_descr();
foreach ($interfaces as $iface => $ifacename) {
$iflist[$iface] = $ifacename;
}
$section = new Form_Section("Configuration");
$section->addClass('toggle-l2tp-enable');
$section->addInput(new Form_Select(
'interface',
'Interface',
$pconfig['interface'],
$iflist
));
$section->addInput(new Form_Input(
'localip',
'Server address',
'text',
$pconfig['localip']
))->setHelp('Enter the IP address the L2TP server should give to clients for use as their "gateway". ' . '<br />' .
'Typically this is set to an unused IP just outside of the client range.' . '<br /><br />' .
'NOTE: This should NOT be set to any IP address currently in use on this firewall.');
$section->addInput(new Form_IpAddress(
'remoteip',
'Remote address range',
$pconfig['remoteip']
))->addMask(l2tp_subnet, $pconfig['l2tp_subnet'])
->setHelp('Specify the starting address for the client IP address subnet.');
$section->addInput(new Form_Input(
'n_l2tp_units',
'Number of L2TP users',
'number',
$pconfig['n_l2tp_units'],
['min' => 0, 'max' => 255]
));
$section->addInput(new Form_Input(
'secret',
'Secret',
'password',
$pconfig['secret']
))->setHelp('Specify optional secret shared between peers. Required on some devices/setups.');
$section->addInput(new Form_Select(
'paporchap',
'Authentication type',
$pconfig['paporchap'],
array(
'chap' => 'CHAP',
'chap-msv2' => 'MS-CHAPv2',
'pap' => 'PAP'
)
))->setHelp('Specifies the protocol to use for authentication.');
$section->addInput(new Form_Input(
'l2tp_dns1',
'Primary L2TM DNS server',
'text',
$pconfig['l2tp_dns1']
));
$section->addInput(new Form_Input(
'l2tp_dns2',
'Secondary L2TM DNS server',
'text',
$pconfig['l2tp_dns2']
));
$form->add($section);
$section = new Form_Section("RADIUS");
$section->addClass('toggle-l2tp-enable');
$section->addInput(new Form_Checkbox(
'radiusenable',
'Enable',
'Use a RADIUS server for authentication',
$pconfig['radiusenable']
))->setHelp('When set, all users will be authenticated using the RADIUS server specified below. The local user database will not be used.');
$section->addInput(new Form_Checkbox(
'radacct_enable',
'Accounting',
'Enable RADIUS accounting',
$pconfig['radacct_enable']
))->setHelp('Sends accounting packets to the RADIUS server.');
$section->addInput(new Form_IpAddress(
'radiusserver',
'Server',
$pconfig['radiusserver']
))->setHelp('Enter the IP address of the RADIUS server.');
$section->addInput(new Form_Input(
'radiussecret',
'Secret',
'password',
$pconfig['radiussecret']
))->setHelp('Enter the shared secret that will be used to authenticate to the RADIUS server.');
$section->addInput(new Form_Checkbox(
'radiusissueips',
'RADIUS issued IPs',
'Issue IP Addresses via RADIUS server.',
$pconfig['radiusissueips']
));
$form->add($section);
print($form);
print_info_box(gettext("Don't forget to add a firewall rule to permit traffic from L2TP clients!"), info);
?>
<script>
//<![CDATA[
events.push(function(){
function setL2TP () {
hide = ! $('#mode').prop('checked');
hideClass('toggle-l2tp-enable', hide);
}
function setRADIUS () {
hide = ! $('#radiusenable').prop('checked');
hideCheckbox('radacct_enable', hide);
hideInput('radiusserver', hide);
hideInput('radiussecret', hide);
hideCheckbox('radiusissueips', hide);
}
// on-click
$('#mode').click(function () {
setL2TP();
});
$('#radiusenable').click(function () {
setRADIUS();
});
// on-page-load
setRADIUS();
setL2TP();
});
//]]>
</script>
<?php include("foot.inc")?>
|