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<?php
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/*
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vpn_ipsec_settings.php
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Copyright (C) 2015 Electric Sheep Fencing, LLC
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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##|+PRIV
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##|*IDENT=page-vpn-ipsec-settings
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##|*NAME=VPN: IPsec: Settings page
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##|*DESCR=Allow access to the 'VPN: IPsec: Settings' page.
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##|*MATCH=vpn_ipsec_settings.php*
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##|-PRIV
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require("functions.inc");
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require("guiconfig.inc");
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require_once("filter.inc");
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require_once("shaper.inc");
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require_once("ipsec.inc");
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require_once("vpn.inc");
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foreach ($ipsec_loglevels as $lkey => $ldescr) {
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if (!empty($config['ipsec']["ipsec_{$lkey}"]))
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$pconfig["ipsec_{$lkey}"] = $config['ipsec']["ipsec_{$lkey}"];
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}
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$pconfig['unityplugin'] = isset($config['ipsec']['unityplugin']);
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$pconfig['shuntlaninterfaces'] = isset($config['ipsec']['shuntlaninterfaces']);
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$pconfig['compression'] = isset($config['ipsec']['compression']);
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$pconfig['enableinterfacesuse'] = isset($config['ipsec']['enableinterfacesuse']);
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$pconfig['acceptunencryptedmainmode'] = isset($config['ipsec']['acceptunencryptedmainmode']);
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$pconfig['maxmss_enable'] = isset($config['system']['maxmss_enable']);
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$pconfig['maxmss'] = $config['system']['maxmss'];
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$pconfig['uniqueids'] = $config['ipsec']['uniqueids'];
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if ($_POST) {
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unset($input_errors);
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$pconfig = $_POST;
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if (!in_array($pconfig['ipsec_dmn'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for Daemon debug.";
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}
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if (!in_array($pconfig['ipsec_mgr'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for SA Manager debug.";
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}
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if (!in_array($pconfig['ipsec_ike'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for IKE SA debug.";
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}
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if (!in_array($pconfig['ipsec_chd'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for IKE Child SA debug.";
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}
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if (!in_array($pconfig['ipsec_job'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for Job Processing debug.";
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}
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if (!in_array($pconfig['ipsec_cfg'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for Configuration backend debug.";
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}
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if (!in_array($pconfig['ipsec_knl'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for Kernel Interface debug.";
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}
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if (!in_array($pconfig['ipsec_net'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for Networking debug.";
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}
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if (!in_array($pconfig['ipsec_asn'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for ASN Encoding debug.";
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}
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if (!in_array($pconfig['ipsec_enc'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for Message encoding debug.";
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}
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if (!in_array($pconfig['ipsec_imc'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for Integrity checker debug.";
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}
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if (!in_array($pconfig['ipsec_imv'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for Integrity Verifier debug.";
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}
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if (!in_array($pconfig['ipsec_pts'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for Platform Trust Service debug.";
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}
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if (!in_array($pconfig['ipsec_tls'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for TLS Handler debug.";
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}
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if (!in_array($pconfig['ipsec_esp'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for IPsec Traffic debug.";
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}
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if (!in_array($pconfig['ipsec_lib'], array('0', '1', '2', '3', '4', '5'), true)) {
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$input_errors[] = "A valid value must be specified for StrongSwan Lib debug.";
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}
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if (isset($pconfig['maxmss'])) {
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if (!is_numericint($pconfig['maxmss']) && $pconfig['maxmss'] != '') {
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$input_errors[] = "An integer must be specified for Maximum MSS.";
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}
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if ($pconfig['maxmss'] != '' && $pconfig['maxmss'] < 576 || $pconfig['maxmss'] > 65535)
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$input_errors[] = "An integer between 576 and 65535 must be specified for Maximum MSS";
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}
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if (!$input_errors) {
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if (is_array($config['ipsec'])) {
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foreach ($ipsec_loglevels as $lkey => $ldescr) {
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if (empty($_POST["ipsec_{$lkey}"])) {
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if (isset($config['ipsec']["ipsec_{$lkey}"]))
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unset($config['ipsec']["ipsec_{$lkey}"]);
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} else
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$config['ipsec']["ipsec_{$lkey}"] = $_POST["ipsec_{$lkey}"];
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}
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}
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$needsrestart = false;
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if($_POST['compression'] == "yes") {
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if (!isset($config['ipsec']['compression']))
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$needsrestart = true;
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$config['ipsec']['compression'] = true;
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} elseif (isset($config['ipsec']['compression'])) {
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$needsrestart = true;
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unset($config['ipsec']['compression']);
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}
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if($_POST['enableinterfacesuse'] == "yes") {
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if (!isset($config['ipsec']['enableinterfacesuse']))
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$needsrestart = true;
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$config['ipsec']['enableinterfacesuse'] = true;
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} elseif (isset($config['ipsec']['enableinterfacesuse'])) {
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$needsrestart = true;
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unset($config['ipsec']['enableinterfacesuse']);
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}
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if($_POST['unityplugin'] == "yes") {
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if (!isset($config['ipsec']['unityplugin']))
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$needsrestart = true;
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$config['ipsec']['unityplugin'] = true;
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} elseif (isset($config['ipsec']['unityplugin'])) {
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$needsrestart = true;
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unset($config['ipsec']['unityplugin']);
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}
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if($_POST['shuntlaninterfaces'] == "yes") {
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$config['ipsec']['shuntlaninterfaces'] = true;
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} elseif (isset($config['ipsec']['shuntlaninterfaces'])) {
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unset($config['ipsec']['shuntlaninterfaces']);
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}
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if($_POST['acceptunencryptedmainmode'] == "yes") {
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if (!isset($config['ipsec']['acceptunencryptedmainmode']))
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$needsrestart = true;
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$config['ipsec']['acceptunencryptedmainmode'] = true;
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} elseif (isset($config['ipsec']['acceptunencryptedmainmode'])) {
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$needsrestart = true;
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unset($config['ipsec']['acceptunencryptedmainmode']);
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}
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if(!empty($_POST['uniqueids'])) {
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$config['ipsec']['uniqueids'] = $_POST['uniqueids'];
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} else {
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unset($config['ipsec']['uniqueids']);
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}
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if($_POST['maxmss_enable'] == "yes") {
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$config['system']['maxmss_enable'] = true;
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$config['system']['maxmss'] = $_POST['maxmss'];
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} else {
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unset($config['system']['maxmss_enable']);
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unset($config['system']['maxmss']);
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}
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write_config();
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$retval = 0;
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$retval = filter_configure();
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if(stristr($retval, "error") != true)
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$savemsg = get_std_save_message(gettext($retval));
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else
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$savemsg = gettext($retval);
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vpn_ipsec_configure($needsrestart);
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vpn_ipsec_configure_loglevels();
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// header("Location: vpn_ipsec_settings.php");
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// return;
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}
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}
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$pgtitle = array(gettext("VPN"),gettext("IPsec"),gettext("Settings"));
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$shortcut_section = "ipsec";
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include("head.inc");
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?>
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<script type="text/javascript">
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//<![CDATA[
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function maxmss_checked(obj) {
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if (obj.checked)
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jQuery('#maxmss').attr('disabled',false);
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else
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jQuery('#maxmss').attr('disabled','true');
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}
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//]]>
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</script>
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<?php
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if ($savemsg)
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print_info_box($savemsg);
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if ($input_errors)
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print_input_errors($input_errors);
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?>
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<?php
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$tab_array = array();
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$tab_array[0] = array(gettext("Tunnels"), false, "vpn_ipsec.php");
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$tab_array[1] = array(gettext("Mobile clients"), false, "vpn_ipsec_mobile.php");
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$tab_array[2] = array(gettext("Pre-Shared Key"), false, "vpn_ipsec_keys.php");
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$tab_array[3] = array(gettext("Advanced Settings"), true, "vpn_ipsec_settings.php");
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display_top_tabs($tab_array, false, 'pills');
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require('classes/Form.class.php');
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$form = new Form;
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$section = new Form_Section('Start IPsec in debug mode based on sections selected');
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foreach ($ipsec_loglevels as $lkey => $ldescr)
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{
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$section->addInput(new Form_Select(
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'ipsec_' . $lkey,
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$ldescr,
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$pconfig['ipsec_' . $lkey],
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array('Silent', 'Audit', 'Control', 'Diag', 'Raw', 'Highest')
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))->setWidth(2);
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}
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$section->addInput(new Form_StaticText('', ''))->setHelp(
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'Launches IPsec in debug mode so that more verbose logs will be generated to aid in troubleshooting.'
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);
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$form->add($section);
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$section = new Form_Section('IPsec Advanced Settings');
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$section->addInput(new Form_Select(
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'uniqueids',
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'Configure Unique IDs as',
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$pconfig['uniqueids'],
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$ipsec_idhandling
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))->setHelp(
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'Whether a particular participant ID should be kept unique, with any new IKE_SA using an ID ' .
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'deemed to replace all old ones using that ID. Participant IDs normally are unique, so a new ' .
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'IKE_SA using the same ID is almost invariably intended to replace an old one. ' .
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'The difference between <b>no</b> and <b>never</b> is that the old IKE_SAs will be replaced when receiving an ' .
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'INITIAL_CONTACT notify if the option is no but will ignore these notifies if <b>never</b> is configured. ' .
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'The daemon also accepts the value <b>keep</b> to reject ' .
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'new IKE_SA setups and keep the duplicate established earlier. Defaults to Yes.'
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);
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$section->addInput(new Form_Checkbox(
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'compression',
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'IP Compression',
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'Enable IPCompression',
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$pconfig['compression']
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))->setHelp('IPComp compression of content is proposed on the connection.');
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$section->addInput(new Form_Checkbox(
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'enableinterfacesuse',
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'Strict interface binding',
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'Enable strict interface binding',
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$pconfig['enableinterfacesuse']
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))->setHelp('Enable strongSwan\'s interfaces_use option to bind specific interfaces only. This option is known to break IPsec with dynamic IP interfaces. This is not recommended at this time.');
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$section->addInput(new Form_Checkbox(
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'acceptunencryptedmainmode',
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'Unencrypted payloads in IKEv1 Main Mode',
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'Accept unencrypted ID and HASH payloads in IKEv1 Main Mode',
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$pconfig['acceptunencryptedmainmode']
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))->setHelp(
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'Some implementations send the third Main Mode message unencrypted, probably to find the PSKs for the specified ID for authentication.' .
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'This is very similar to Aggressive Mode, and has the same security implications: ' .
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'A passive attacker can sniff the negotiated Identity, and start brute forcing the PSK using the HASH payload.' .
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'It is recommended to keep this option to no, unless you know exactly what the implications are and require compatibility to such devices (for example, some SonicWall boxes).'
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);
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$section->addInput(new Form_Checkbox(
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'maxmss_enable',
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'Enable Maximum MSS',
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'Enable MSS clamping on VPN traffic',
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$pconfig['maxmss_enable']
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))->toggles('.toggle-maxmss', 'collapse');
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$group = new Form_Group('Maximum MSS');
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$group->addClass('toggle-maxmss collapse');
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if (!empty($pconfig['maxmss_enable']))
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$group->addClass('in');
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$group->add(new Form_Input(
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'maxmss',
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'Maximum MSS',
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'text',
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($pconfig['maxmss'] ? $pconfig['maxmss'] : '1400')
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))->setHelp(
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'Enable MSS clamping on TCP flows over VPN. ' .
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'This helps overcome problems with PMTUD on IPsec VPN links. If left blank, the default value is 1400 bytes. '
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);
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$section->add($group);
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$section->addInput(new Form_Checkbox(
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'unityplugin',
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331
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'Disable Cisco Extensions',
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332
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'Disable Unity Plugin',
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333
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$pconfig['unityplugin']
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334
|
))->setHelp('Disable Unity Plugin which provides Cisco Extension support as Split-Include, Split-Exclude, Split-Dns, ...');
|
|
335
|
|
|
336
|
$section->addInput(new Form_Checkbox(
|
|
337
|
'shuntlaninterfaces',
|
|
338
|
'Bypass LAN address',
|
|
339
|
'Enable bypass for LAN interface ip',
|
|
340
|
$pconfig['shuntlaninterfaces']
|
|
341
|
))->setHelp('Prevent LAN ip address to be processed for IPsec traffic.');
|
|
342
|
|
|
343
|
$form->add($section);
|
|
344
|
|
|
345
|
print $form;
|
|
346
|
|
|
347
|
?>
|
|
348
|
|
|
349
|
<?php include("foot.inc"); ?>
|
