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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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$pconfig['preferoldsa_enable'] = isset($config['ipsec']['preferoldsa']);
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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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$pconfig['compression'] = isset($config['ipsec']['compression']);
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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'] = $config['system']['maxmss'];
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if ($_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 (!$input_errors) {
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if($_POST['preferoldsa_enable'] == "yes")
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$config['ipsec']['preferoldsa'] = true;
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elseif (isset($config['ipsec']['preferoldsa']))
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unset($config['ipsec']['preferoldsa']);
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if (is_array($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($_POST['unityplugin'] == "yes") {
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if (!isset($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['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_preferoldsa();
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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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$shortcut_section = "ipsec";
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include("head.inc");
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?>
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<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
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<?php include("fbegin.inc"); ?>
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<script type="text/javascript">
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//<![CDATA[
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function maxmss_checked(obj) {
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if (obj.checked)
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jQuery('#maxmss').attr('disabled',false);
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else
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jQuery('#maxmss').attr('disabled','true');
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}
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//]]>
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</script>
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<form action="vpn_ipsec_settings.php" method="post" name="iform" id="iform">
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<?php
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if ($savemsg)
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print_info_box($savemsg);
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if ($input_errors)
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print_input_errors($input_errors);
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?>
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<table width="100%" border="0" cellpadding="0" cellspacing="0" summary="vpn ipsec settings">
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<tr>
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<td class="tabnavtbl">
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<?php
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$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($tab_array);
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?>
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</td>
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</tr>
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<tr>
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<td id="mainarea">
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<div class="tabcont">
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<table width="100%" border="0" cellpadding="6" cellspacing="0" summary="main area">
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<tr>
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<td colspan="2" valign="top" class="listtopic"><?=gettext("IPsec Advanced Settings"); ?></td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncell"><?=gettext("Security Associations"); ?></td>
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<td width="78%" class="vtable">
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<input name="preferoldsa_enable" type="checkbox" id="preferoldsa_enable" value="yes" <?php if ($pconfig['preferoldsa_enable']) echo "checked=\"checked\""; ?> />
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<strong><?=gettext("Prefer older IPsec SAs"); ?></strong>
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<br />
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<?=gettext("By default, if several SAs match, the newest one is " .
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"preferred if it's at least 30 seconds old. Select this " .
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"option to always prefer old SAs over new ones."); ?>
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</td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncell"><?=gettext("IPsec Debug"); ?></td>
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<td width="78%" class="vtable">
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<strong><?=gettext("Start IPsec in debug mode based on sections selected"); ?></strong>
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<br />
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<table summary="ipsec debug">
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<?php foreach ($ipsec_loglevels as $lkey => $ldescr): ?>
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<tr>
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<td width="22%" valign="top" class="vncell"><?=$ldescr;?></td>
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<td width="78%" valign="top" class="vncell">
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<?php echo "<select name=\"ipsec_{$lkey}\" id=\"ipsec_{$lkey}\">\n";
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foreach (array("Silent", "Audit", "Control", "Diag", "Raw", "Highest") as $lidx => $lvalue) {
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echo "<option value=\"{$lidx}\" ";
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if ($pconfig["ipsec_{$lkey}"] == $lidx)
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echo "selected=\"selected\"";
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echo ">{$lvalue}</option>\n";
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}
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?>
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</select>
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</td>
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</tr>
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<?php endforeach; ?>
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<tr style="display:none;"><td></td></tr>
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</table>
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<br /><?=gettext("Launches IPsec in debug mode so that more verbose logs " .
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"will be generated to aid in troubleshooting."); ?>
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</td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncell"><?=gettext("Unique IDs"); ?></td>
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<td width="78%" class="vtable">
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<strong><?=gettext("Handle IDs as: "); ?></strong>
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<?php echo "<select name=\"uniqueids\" id=\"uniqueids\">\n";
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foreach ($ipsec_idhandling as $value => $lvalue) {
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echo "<option value=\"{$value}\" ";
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if ($pconfig['uniqueids'] == $value)
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echo "selected=\"selected\"";
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echo ">{$lvalue}</option>\n";
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}
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?>
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</select>
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<br />
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<?=gettext("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."); ?>
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</td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncell"><?=gettext("IP Compression"); ?></td>
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<td width="78%" class="vtable">
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<input name="compression" type="checkbox" id="compression" value="yes" <?php if ($pconfig['compression']) echo "checked=\"checked\""; ?> />
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<strong><?=gettext("Enable IPCompression"); ?></strong>
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<br />
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<?=gettext("IPComp compression of content is proposed on the connection."); ?>
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</td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncell"><?=gettext("Unencrypted payloads in IKEv1 Main Mode"); ?></td>
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<td width="78%" class="vtable">
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<input name="acceptunencryptedmainmode" type="checkbox" id="acceptunencryptedmainmode" value="yes" <?php if ($pconfig['acceptunencryptedmainmode']) echo "checked=\"checked\""; ?> />
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320
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<strong><?=gettext("Accept unencrypted ID and HASH payloads in IKEv1 Main Mode"); ?></strong>
|
|
321
|
<br />
|
|
322
|
<?=gettext("Some implementations send the third Main Mode message unencrypted, probably to find the PSKs for the specified ID for authentication." .
|
|
323
|
"This is very similar to Aggressive Mode, and has the same security implications: " .
|
|
324
|
"A passive attacker can sniff the negotiated Identity, and start brute forcing the PSK using the HASH payload." .
|
|
325
|
" 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).");?>
|
|
326
|
</td>
|
|
327
|
</tr>
|
|
328
|
<tr>
|
|
329
|
<td width="22%" valign="top" class="vncell"><?=gettext("Maximum MSS"); ?></td>
|
|
330
|
<td width="78%" class="vtable">
|
|
331
|
<input name="maxmss_enable" type="checkbox" id="maxmss_enable" value="yes" <?php if ($pconfig['maxmss_enable'] == true) echo "checked=\"checked\""; ?> onclick="maxmss_checked(this)" />
|
|
332
|
<strong><?=gettext("Enable MSS clamping on VPN traffic"); ?></strong>
|
|
333
|
<br />
|
|
334
|
<input name="maxmss" id="maxmss" value="<?php if ($pconfig['maxmss'] <> "") echo $pconfig['maxmss']; else "1400"; ?>" class="formfld unknown" <?php if ($pconfig['maxmss_enable'] == false) echo "disabled=\"disabled\""; ?> />
|
|
335
|
<br />
|
|
336
|
<?=gettext("Enable MSS clamping on TCP flows over VPN. " .
|
|
337
|
"This helps overcome problems with PMTUD on IPsec VPN links. If left blank, the default value is 1400 bytes. "); ?>
|
|
338
|
</td>
|
|
339
|
</tr>
|
|
340
|
<tr>
|
|
341
|
<td width="22%" valign="top" class="vncell"><?=gettext("Disable Cisco Extensions"); ?></td>
|
|
342
|
<td width="78%" class="vtable">
|
|
343
|
<input name="unityplugin" type="checkbox" id="unityplugin" value="yes" <?php if ($pconfig['unityplugin'] == true) echo "checked=\"checked\""; ?> />
|
|
344
|
<strong><?=gettext("Disable Unity Plugin"); ?></strong>
|
|
345
|
<br />
|
|
346
|
<?=gettext("Disable Unity Plugin which provides Cisco Extension support as Split-Include, Split-Exclude, Split-Dns, ..."); ?>
|
|
347
|
</td>
|
|
348
|
</tr>
|
|
349
|
<tr>
|
|
350
|
<td width="22%" valign="top"> </td>
|
|
351
|
<td width="78%">
|
|
352
|
<input name="submit" type="submit" class="formbtn" value="<?=gettext("Save"); ?>" />
|
|
353
|
</td>
|
|
354
|
</tr>
|
|
355
|
</table>
|
|
356
|
</div>
|
|
357
|
</td>
|
|
358
|
</tr>
|
|
359
|
</table>
|
|
360
|
</form>
|
|
361
|
<?php include("fend.inc"); ?>
|
|
362
|
</body>
|
|
363
|
</html>
|
