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+<?php
+/*
+ vpn_l2tp.php
+ part of pfSense
+
+ Copyright (C) 2005 Scott Ullrich (sullrich@gmail.com)
+ Copyright (C) 2013-2015 Electric Sheep Fencing, LP
+ 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.
+
+ THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS 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
+ AUTHOR 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 page
+##|*DESCR=Allow access to the 'VPN: VPN L2TP' page.
+##|*MATCH=vpn_l2tp.php*
+##|-PRIV
+
+$pgtitle = array(gettext("VPN"), gettext("L2TP"), gettext("L2TP"));
+$shortcut_section = "l2tps";
+
+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['wins'] = $l2tpcfg['wins'];
+$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'] = $_POST['secret'];
+
+ if ($_POST['wins']) {
+ $l2tpcfg['wins'] = $_POST['wins'];
+ } else {
+ unset($l2tpcfg['wins']);
+ }
+
+ $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);
+ }
+ }
+}
+
+include("head.inc");
+?>
+
+<script type="text/javascript">
+//<![CDATA[
+function get_radio_value(obj) {
+ for (i = 0; i < obj.length; i++) {
+ if (obj[i].checked) {
+ return obj[i].value;
+ }
+ }
+ return null;
+}
+
+function enable_change(enable_over) {
+ if ((get_radio_value(document.iform.mode) == "server") || enable_over) {
+ document.iform.remoteip.disabled = 0;
+ document.iform.localip.disabled = 0;
+ document.iform.l2tp_subnet.disabled = 0;
+ document.iform.radiusenable.disabled = 0;
+ document.iform.radiusissueips.disabled = 0;
+ document.iform.paporchap.disabled = 0;
+ document.iform.interface.disabled = 0;
+ document.iform.n_l2tp_units.disabled = 0;
+ document.iform.secret.disabled = 0;
+ document.iform.l2tp_dns1.disabled = 0;
+ document.iform.l2tp_dns2.disabled = 0;
+ /* fix colors */
+ document.iform.remoteip.style.backgroundColor = '#FFFFFF';
+ document.iform.localip.style.backgroundColor = '#FFFFFF';
+ document.iform.l2tp_subnet.style.backgroundColor = '#FFFFFF';
+ document.iform.radiusenable.style.backgroundColor = '#FFFFFF';
+ document.iform.radiusissueips.style.backgroundColor = '#FFFFFF';
+ document.iform.paporchap.style.backgroundColor = '#FFFFFF';
+ document.iform.interface.style.backgroundColor = '#FFFFFF';
+ document.iform.n_l2tp_units.style.backgroundColor = '#FFFFFF';
+ document.iform.secret.style.backgroundColor = '#FFFFFF';
+ if (document.iform.radiusenable.checked || enable_over) {
+ document.iform.radacct_enable.disabled = 0;
+ document.iform.radiusserver.disabled = 0;
+ document.iform.radiussecret.disabled = 0;
+ document.iform.radiusissueips.disabled = 0;
+ /* fix colors */
+ document.iform.radacct_enable.style.backgroundColor = '#FFFFFF';
+ document.iform.radiusserver.style.backgroundColor = '#FFFFFF';
+ document.iform.radiussecret.style.backgroundColor = '#FFFFFF';
+ document.iform.radiusissueips.style.backgroundColor = '#FFFFFF';
+ } else {
+ document.iform.radacct_enable.disabled = 1;
+ document.iform.radiusserver.disabled = 1;
+ document.iform.radiussecret.disabled = 1;
+ document.iform.radiusissueips.disabled = 1;
+ /* fix colors */
+ document.iform.radacct_enable.style.backgroundColor = '#D4D0C8';
+ document.iform.radiusserver.style.backgroundColor = '#D4D0C8';
+ document.iform.radiussecret.style.backgroundColor = '#D4D0C8';
+ document.iform.radiusissueips.style.backgroundColor = '#D4D0C8';
+ }
+ } else {
+ document.iform.interface.disabled = 1;
+ document.iform.n_l2tp_units.disabled = 1;
+ document.iform.l2tp_subnet.disabled = 1;
+ document.iform.l2tp_dns1.disabled = 1;
+ document.iform.l2tp_dns2.disabled = 1;
+ document.iform.paporchap.disabled = 1;
+ document.iform.remoteip.disabled = 1;
+ document.iform.localip.disabled = 1;
+ document.iform.radiusenable.disabled = 1;
+ document.iform.radacct_enable.disabled = 1;
+ document.iform.radiusserver.disabled = 1;
+ document.iform.radiussecret.disabled = 1;
+ document.iform.radiusissueips.disabled = 1;
+ document.iform.secret.disabled = 1;
+ /* fix colors */
+ document.iform.interface.style.backgroundColor = '#D4D0C8';
+ document.iform.n_l2tp_units.style.backgroundColor = '#D4D0C8';
+ document.iform.l2tp_subnet.style.backgroundColor = '#D4D0C8';
+ document.iform.paporchap.style.backgroundColor = '#D4D0C8';
+ document.iform.remoteip.style.backgroundColor = '#D4D0C8';
+ document.iform.localip.style.backgroundColor = '#D4D0C8';
+ document.iform.radiusenable.style.backgroundColor = '#D4D0C8';
+ document.iform.radacct_enable.style.backgroundColor = '#D4D0C8';
+ document.iform.radiusserver.style.backgroundColor = '#D4D0C8';
+ document.iform.radiussecret.style.backgroundColor = '#D4D0C8';
+ document.iform.radiusissueips.style.backgroundColor = '#D4D0C8';
+ document.iform.secret.style.backgroundColor = '#D4D0C8';
+ }
+}
+//]]>
+</script>
+
+<form class="form-horizontal" action="vpn_l2tp.php" method="post" name="iform" id="iform">
+<?php if ($input_errors) print_input_errors($input_errors)?>
+<?php if ($savemsg) print_info_box($savemsg)?>
+
+<?php
+$tab_array = array();
+$tab_array[0] = array(gettext("Configuration"), true, "vpn_l2tp.php");
+$tab_array[1] = array(gettext("Users"), false, "vpn_l2tp_users.php");
+display_top_tabs($tab_array);
+?>
+
+ <div class="panel panel-default">
+ <div class="panel-heading">
+ <h2 class="panel-title"><?=gettext('Enable L2TP'); ?></h2>
+ </div>
+
+ <div class="panel-body">
+ <div class="form-group">
+ <div class="col-sm-10">
+ <label>
+ <input name="mode" type="radio" onclick="enable_change(false)" value="off" <?php if (($pconfig['mode'] != "server") && ($pconfig['mode'] != "redir")) echo "checked=\"checked\""?> />
+ <?=gettext("Off")?>
+ </label>
+ <label>
+ <input type="radio" name="mode" value="server" onclick="enable_change(false)" <?php if ($pconfig['mode'] == "server") echo "checked=\"checked\""?> />
+ <?=gettext("Enable L2TP server")?>
+ </label>
+ </div>
+ </div>
+ </div>
+ </div>
+
+ <div class="panel panel-default">
+ <div class="panel-heading">
+ <h2 class="panel-title"><?=gettext('Configuration'); ?></h2>
+ </div>
+
+ <div class="panel-body">
+ <div class="form-group">
+ <label for="interface" class="col-sm-2 control-label"><?=gettext("Interface")?></label>
+ <div class="col-sm-2">
+ <select class="form-control" name="interface" class="formselect" id="interface">
+<?php
+$interfaces = get_configured_interface_with_descr();
+foreach ($interfaces as $iface => $ifacename): ?>
+ <option value="<?=$iface?>" <?php if ($iface == $pconfig['interface']) echo "selected=\"selected\""?>>
+ <?=htmlspecialchars($ifacename)?>
+ </option>
+<?php endforeach?>
+ </select>
+ </div>
+ </div>
+ <div class="form-group">
+ <label for="localip" class="col-sm-2 control-label"><?=gettext("Server Address")?></label>
+ <div class="col-sm-10">
+ <?=$mandfldhtml?><input name="localip" type="text" class="form-control formfld unknown" id="localip" size="20" value="<?=htmlspecialchars($pconfig['localip'])?>" />
+
+ <span class="help-block">
+ <?=gettext("Enter the IP address the L2TP server should give to clients for use as their \"gateway\"")?>.
+ <br />
+ <?=gettext("Typically this is set to an unused IP just outside of the client range")?>.
+ <br />
+ <br />
+ <?=gettext("NOTE: This should NOT be set to any IP address currently in use on this firewall")?>.
+ </span>
+ </div>
+ </div>
+
+ <div class="form-group">
+ <label for="remoteip" class="col-sm-2 control-label"><?=gettext("Remote Address Range")?></label>
+ <div class="col-sm-10">
+ <?=$mandfldhtml?><input name="remoteip" type="text" class="form-control formfld unknown" id="remoteip" size="20" value="<?=htmlspecialchars($pconfig['remoteip'])?>" />
+ <span class="help-block">
+ <?=gettext("Specify the starting address for the client IP address subnet.")?>
+ </span>
+ </div>
+ </div>
+
+ <div class="form-group">
+ <label for="l2tp_subnet" class="col-sm-2 control-label"><?=gettext("Subnet Mask")?></label>
+ <div class="col-sm-2">
+ <select id="l2tp_subnet" name="l2tp_subnet" class="form-control">
+<?php
+ for($x=0; $x<33; $x++) {
+ if($x == $pconfig['l2tp_subnet'])
+ $SELECTED = " selected=\"selected\"";
+ else
+ $SELECTED = "";
+ echo "<option value=\"{$x}\"{$SELECTED}>{$x}</option>\n";
+ }
+?>
+ </select>
+ <span class="help-block">
+ <?=gettext("Hint:")?> 24 <?=gettext("is")?> 255.255.255.0
+ </span>
+ </div>
+ </div>
+
+ <div class="form-group">
+ <label for="n_l2tp_units" class="col-sm-2 control-label"><?=gettext("Number of L2TP users")?></label>
+ <div class="col-sm-2">
+ <select id="n_l2tp_units" name="n_l2tp_units" class="form-control">
+<?php
+ for($x=0; $x<255; $x++) {
+ if($x == $pconfig['n_l2tp_units'])
+ $SELECTED = " selected=\"selected\"";
+ else
+ $SELECTED = "";
+ echo "<option value=\"{$x}\"{$SELECTED}>{$x}</option>\n";
+ }
+?>
+ </select>
+ <span class="help-block">
+ <?=gettext("Hint:")?> 10 <?=gettext("is ten L2TP clients")?>
+ </span>
+ </div>
+ </div>
+
+ <div class="form-group">
+ <label for="secret" class="col-sm-2 control-label"><?=gettext("Secret")?></label>
+ <div class="col-sm-10">
+ <input type="password" name="secret" id="secret" class="formfld pwd form-control" value="<?=htmlspecialchars($pconfig['secret'])?>" />
+ <span class="help-block">
+ <?=gettext("Specify optional secret shared between peers. Required on some devices/setups.")?>
+ </span>
+ </div>
+ </div>
+
+ <div class="form-group">
+ <label for="paporchap" class="col-sm-2 control-label"><?=gettext("Authentication Type")?></label>
+ <div class="col-sm-2">
+ <?=$mandfldhtml?><select name="paporchap" id="paporchap" class="form-control">
+ <option value='chap'<?php if($pconfig['paporchap'] == "chap") echo " selected=\"selected\""?>><?=gettext("CHAP")?></option>
+ <option value='pap'<?php if($pconfig['paporchap'] == "pap") echo " selected=\"selected\""?>><?=gettext("PAP")?></option>
+ </select>
+ <span class="help-block">
+ <?=gettext("Specifies which protocol to use for authentication.")?>
+ </span>
+ </div>
+ </div>
+
+ <div class="form-group">
+ <label for="l2tp_dns1" class="col-sm-2 control-label"><?=gettext("L2TP DNS Servers")?></label>
+ <div class="col-sm-10">
+ <?=$mandfldhtml?><input name="l2tp_dns1" type="text" class="formfld unknown form-control" id="l2tp_dns1" size="20" value="<?=htmlspecialchars($pconfig['l2tp_dns1'])?>" />
+ <input name="l2tp_dns2" type="text" class="formfld unknown form-control" id="l2tp_dns2" size="20" value="<?=htmlspecialchars($pconfig['l2tp_dns2'])?>" />
+ <span class="help-block">
+ <?=gettext("primary and secondary DNS servers assigned to L2TP clients")?>
+ </span>
+ </div>
+ </div>
+
+ <div class="form-group">
+ <label for="wins" class="col-sm-2 control-label"><?=gettext("WINS Server")?></label>
+ <div class="col-sm-10">
+ <input name="wins" class="formfld unknown form-control" id="wins" size="20" value="<?=htmlspecialchars($pconfig['wins'])?>" />
+ </div>
+ </div>
+ </div>
+ </div>
+
+ <div class="panel panel-default">
+ <div class="panel-heading">
+ <h2 class="panel-title"><?=gettext('RADIUS'); ?></h2>
+ </div>
+
+ <div class="panel-body">
+ <div class="form-group">
+ <label for="radiusenable" class="col-sm-2 control-label"><?=gettext('Enable')?></label>
+ <div class="col-sm-10 checkbox">
+ <label>
+ <input name="radiusenable" type="checkbox" id="radiusenable" onclick="enable_change(false)" value="yes" <?php if ($pconfig['radiusenable']) echo "checked=\"checked\""?> />
+ <?=gettext("Use a RADIUS server for authentication")?>
+ </label>
+ <span class="help-block">
+ <?=gettext("When set, all users will be authenticated using the RADIUS server specified below. The local user database will not be used.")?>
+ </span>
+ </div>
+ </div>
+ <div class="form-group">
+ <label for="radacct_enable" class="col-sm-2 control-label"><?=gettext('Enable accounting')?></label>
+ <div class="col-sm-10 checkbox">
+ <label>
+ <input name="radacct_enable" type="checkbox" id="radacct_enable" onclick="enable_change(false)" value="yes" <?php if ($pconfig['radacct_enable']) echo "checked=\"checked\""?> />
+ <?=gettext("Enable RADIUS accounting")?>
+ </label>
+ <span class="help-block">
+ <?=gettext("Sends accounting packets to the RADIUS server.")?>
+ </span>
+ </div>
+ </div>
+
+ <div class="form-group">
+ <label for="radiusserver" class="col-sm-2 control-label"><?=gettext("RADIUS Server")?></label>
+ <div class="col-sm-10">
+ <input name="radiusserver" type="text" class="formfld unknown form-control" id="radiusserver" size="20" value="<?=htmlspecialchars($pconfig['radiusserver'])?>" />
+ <span class="help-block">
+ <?=gettext("Enter the IP address of the RADIUS server.")?>
+ </span>
+ </div>
+ </div>
+ <div class="form-group">
+ <label for="radiussecret" class="col-sm-2 control-label"><?=gettext("RADIUS Shared Secret")?></label>
+ <div class="col-sm-10">
+ <input name="radiussecret" type="password" class="formfld pwd form-control" id="radiussecret" size="20" value="<?=htmlspecialchars($pconfig['radiussecret'])?>" />
+ <span class="help-block">
+ <?=gettext("Enter the shared secret that will be used to authenticate to the RADIUS server.")?>
+ </span>
+ </div>
+ </div>
+
+ <div class="form-group">
+ <label for="radiusissueips" class="col-sm-2 control-label"><?=gettext("RADIUS Issued IP's")?></label>
+ <div class="col-sm-10 checkbox">
+ <label>
+ <input name="radiusissueips" value="yes" type="checkbox" class="formfld" id="radiusissueips"<?php if(isset($pconfig['radiusissueips'])) echo " checked=\"checked\""?> />
+ <?=gettext("Issue IP Addresses via RADIUS server.")?>
+ </label>
+ </div>
+ </div>
+ </div>
+ </div>
+
+<?php
+ // TODO: Is it possible to detect available rules and only show warning if there are no (relevant) rules set?
+?>
+ <div class="alert alert-danger">
+ <strong><?=gettext("Note:")?></strong> <?=gettext("Don't forget to add a firewall rule to permit traffic from L2TP clients!")?>
+ </div>
+
+ <div class="col-sm-10 col-sm-offset-2">
+ <input id="submit" name="Submit" type="submit" class="btn btn-primary" value="<?=gettext("Save")?>" onclick="enable_change(true)" />
+ </div>
+</form>
+
+<script type="text/javascript">
+//<![CDATA[
+ enable_change(false);
+//]]>
+</script>
+
+<?php include("foot.inc")?> \ No newline at end of file
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