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#!/usr/local/bin/php
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<?php
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/*
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vpn_pptp.php
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part of m0n0wall (http://m0n0.ch/wall)
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78cf56c6
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Scott Ullrich
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5b237745
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Scott Ullrich
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Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
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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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Scott Ullrich
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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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require("guiconfig.inc");
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if (!is_array($config['pptpd']['radius'])) {
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$config['pptpd']['radius'] = array();
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}
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$pptpcfg = &$config['pptpd'];
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$pconfig['remoteip'] = $pptpcfg['remoteip'];
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$pconfig['localip'] = $pptpcfg['localip'];
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$pconfig['redir'] = $pptpcfg['redir'];
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$pconfig['mode'] = $pptpcfg['mode'];
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$pconfig['req128'] = isset($pptpcfg['req128']);
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$pconfig['radiusenable'] = isset($pptpcfg['radius']['enable']);
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$pconfig['radacct_enable'] = isset($pptpcfg['radius']['accounting']);
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$pconfig['radiusserver'] = $pptpcfg['radius']['server'];
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$pconfig['radiussecret'] = $pptpcfg['radius']['secret'];
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if ($_POST) {
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unset($input_errors);
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$pconfig = $_POST;
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/* input validation */
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if ($_POST['mode'] == "server") {
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$reqdfields = explode(" ", "localip remoteip");
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$reqdfieldsn = explode(",", "Server address,Remote start address");
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if ($_POST['radiusenable']) {
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$reqdfields = array_merge($reqdfields, explode(" ", "radiusserver radiussecret"));
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$reqdfieldsn = array_merge($reqdfieldsn,
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explode(",", "RADIUS server address,RADIUS shared secret"));
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}
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do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);
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if (($_POST['localip'] && !is_ipaddr($_POST['localip']))) {
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$input_errors[] = "A valid server address must be specified.";
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}
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if (($_POST['subnet'] && !is_ipaddr($_POST['remoteip']))) {
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$input_errors[] = "A valid remote start address must be specified.";
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}
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if (($_POST['radiusserver'] && !is_ipaddr($_POST['radiusserver']))) {
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$input_errors[] = "A valid RADIUS server address must be specified.";
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}
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if (!$input_errors) {
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$_POST['remoteip'] = $pconfig['remoteip'] = gen_subnet($_POST['remoteip'], $g['pptp_subnet']);
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$subnet_start = ip2long($_POST['remoteip']);
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$subnet_end = ip2long($_POST['remoteip']) + $g['n_pptp_units'] - 1;
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if ((ip2long($_POST['localip']) >= $subnet_start) &&
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(ip2long($_POST['localip']) <= $subnet_end)) {
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$input_errors[] = "The specified server address lies in the remote subnet.";
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}
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if ($_POST['localip'] == $config['interfaces']['lan']['ipaddr']) {
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$input_errors[] = "The specified server address is equal to the LAN interface address.";
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}
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}
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} else if ($_POST['mode'] == "redir") {
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$reqdfields = explode(" ", "redir");
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$reqdfieldsn = explode(",", "PPTP redirection target address");
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do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors);
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if (($_POST['redir'] && !is_ipaddr($_POST['redir']))) {
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$input_errors[] = "A valid target address must be specified.";
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}
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}
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if (!$input_errors) {
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$pptpcfg['remoteip'] = $_POST['remoteip'];
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$pptpcfg['redir'] = $_POST['redir'];
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$pptpcfg['localip'] = $_POST['localip'];
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$pptpcfg['mode'] = $_POST['mode'];
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$pptpcfg['req128'] = $_POST['req128'] ? true : false;
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$pptpcfg['radius']['enable'] = $_POST['radiusenable'] ? true : false;
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$pptpcfg['radius']['accounting'] = $_POST['radacct_enable'] ? true : false;
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$pptpcfg['radius']['server'] = $_POST['radiusserver'];
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$pptpcfg['radius']['secret'] = $_POST['radiussecret'];
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if (($pconfig['mode'] == "server")) {
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/*
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* traverse ruleset. if no PPTP rule is found
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* install one.
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*/
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$found_pptp_rule = 0;
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foreach($config['filter']['rule'] as $rule) {
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$pos = strpos($rule['descr'], "PPTP");
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if ( $pos <> false ) $found_pptp_rule = 1;
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}
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if($found_pptp_rule == 0) {
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/* no PPTP rule found. craete one. */
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add_default_pptp_rule();
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}
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}
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write_config();
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$retval = 0;
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if (!file_exists($d_sysrebootreqd_path)) {
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config_lock();
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$retval = vpn_pptpd_configure();
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config_unlock();
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}
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$savemsg = get_std_save_message($retval);
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if($found_pptp_rule ==0) $savemsg .= "<br>A default PPTP rule has been added to the firewall rules section.";
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}
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}
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?>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head>
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<title><?=gentitle("VPN: PPTP");?></title>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<link href="gui.css" rel="stylesheet" type="text/css">
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<script language="JavaScript">
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<!--
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function get_radio_value(obj)
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{
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for (i = 0; i < obj.length; i++) {
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if (obj[i].checked)
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return obj[i].value;
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}
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return null;
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}
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function enable_change(enable_over) {
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if ((get_radio_value(document.iform.mode) == "server") || enable_over) {
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document.iform.remoteip.disabled = 0;
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document.iform.localip.disabled = 0;
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document.iform.req128.disabled = 0;
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document.iform.radiusenable.disabled = 0;
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if (document.iform.radiusenable.checked || enable_over) {
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document.iform.radacct_enable.disabled = 0;
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document.iform.radiusserver.disabled = 0;
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document.iform.radiussecret.disabled = 0;
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} else {
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document.iform.radacct_enable.disabled = 1;
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document.iform.radiusserver.disabled = 1;
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document.iform.radiussecret.disabled = 1;
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}
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} else {
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document.iform.remoteip.disabled = 1;
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document.iform.localip.disabled = 1;
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document.iform.req128.disabled = 1;
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document.iform.radiusenable.disabled = 1;
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document.iform.radacct_enable.disabled = 1;
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document.iform.radiusserver.disabled = 1;
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document.iform.radiussecret.disabled = 1;
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}
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if ((get_radio_value(document.iform.mode) == "redir") || enable_over) {
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document.iform.redir.disabled = 0;
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} else {
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document.iform.redir.disabled = 1;
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}
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}
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//-->
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</script>
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</head>
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<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
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<?php include("fbegin.inc"); ?>
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<p class="pgtitle">VPN: PPTP</p>
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<form action="vpn_pptp.php" method="post" name="iform" id="iform">
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<?php if ($input_errors) print_input_errors($input_errors); ?>
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<?php if ($savemsg) print_info_box($savemsg); ?>
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<table width="100%" border="0" cellpadding="0" cellspacing="0">
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<tr><td>
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<ul id="tabnav">
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<li class="tabact">Configuration</li>
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<li class="tabinact"><a href="vpn_pptp_users.php">Users</a></li>
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</ul>
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</td></tr>
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<tr>
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<td class="tabcont">
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<table width="100%" border="0" cellpadding="6" cellspacing="0">
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<tr>
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<td width="22%" valign="top" class="vtable"> </td>
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<td width="78%" class="vtable">
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<input name="mode" type="radio" onclick="enable_change(false)" value="off"
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<?php if (($pconfig['mode'] != "server") && ($pconfig['mode'] != "redir")) echo "checked";?>>
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Off</td>
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<tr>
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<td width="22%" valign="top" class="vtable"> </td>
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<td width="78%" class="vtable">
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<input type="radio" name="mode" value="redir" onclick="enable_change(false)" <?php if ($pconfig['mode'] == "redir") echo "checked"; ?>>
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Redirect incoming PPTP connections to:</td>
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<tr>
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<td width="22%" valign="top" class="vncellreq">PPTP redirection</td>
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<td width="78%" class="vtable">
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<input name="redir" type="text" class="formfld" id="redir" size="20" value="<?=htmlspecialchars($pconfig['redir']);?>">
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<br>
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Enter the IP address of a host which will accept incoming
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PPTP connections.</td>
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<tr>
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<td width="22%" valign="top" class="vtable"> </td>
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<td width="78%" class="vtable">
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<input type="radio" name="mode" value="server" onclick="enable_change(false)" <?php if ($pconfig['mode'] == "server") echo "checked"; ?>>
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Enable PPTP server</td>
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<tr>
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<td width="22%" valign="top" class="vncellreq">Max. concurrent
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connections</td>
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<td width="78%" class="vtable">
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<?=$g['n_pptp_units'];?>
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</td>
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<tr>
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<td width="22%" valign="top" class="vncellreq">Server address</td>
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<td width="78%" class="vtable">
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<input name="localip" type="text" class="formfld" id="localip" size="20" value="<?=htmlspecialchars($pconfig['localip']);?>">
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<br>
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Enter the IP address the PPTP server should use on its side
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for all clients.</td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncellreq">Remote address
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range</td>
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<td width="78%" class="vtable">
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<input name="remoteip" type="text" class="formfld" id="remoteip" size="20" value="<?=htmlspecialchars($pconfig['remoteip']);?>">
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/
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<?=$g['pptp_subnet'];?>
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<br>
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Specify the starting address for the client IP address subnet.<br>
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The PPTP server will assign
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<?=$g['n_pptp_units'];?>
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addresses, starting at the address entered above, to clients.</td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncell">RADIUS</td>
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<td width="78%" class="vtable">
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<p>
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<input name="radiusenable" type="checkbox" id="radiusenable" onclick="enable_change(false)" value="yes" <?php if ($pconfig['radiusenable'] == "yes") echo "checked"; ?>>
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<strong>Use a RADIUS server for authentication<br>
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</strong>When set, all users will be authenticated using
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the RADIUS server specified below. The local user database
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will not be used.<br>
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<br>
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<input name="radacct_enable" type="checkbox" id="radacct_enable" onclick="enable_change(false)" value="yes" <?php if ($pconfig['radacct_enable'] == "yes") echo "checked"; ?>>
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<strong>Enable RADIUS accounting <br>
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</strong>Sends accounting packets to the RADIUS server. </p></td>
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</tr>
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<tr>
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<td width="22%" valign="top" class="vncell">RADIUS server </td>
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<td width="78%" class="vtable">
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<p>
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<input name="radiusserver" type="text" class="formfld" id="radiusserver" size="20" value="<?=htmlspecialchars($pconfig['radiusserver']);?>">
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<br>
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| 278 |
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Enter the IP address of the RADIUS server.</p></td>
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| 279 |
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</tr>
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<tr>
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| 281 |
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<td width="22%" valign="top" class="vncell">RADIUS shared secret</td>
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| 282 |
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<td width="78%" valign="top" class="vtable">
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| 283 |
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<p>
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<input name="radiussecret" type="password" class="formfld" id="radiussecret" size="20" value="<?=htmlspecialchars($pconfig['radiussecret']);?>">
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<br>
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Enter the shared secret that will be used to authenticate
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to the RADIUS server.</p></td>
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| 288 |
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</tr>
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| 289 |
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<tr>
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| 290 |
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<td height="16" colspan="2" valign="top"></td>
|
| 291 |
|
|
</tr>
|
| 292 |
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<tr>
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| 293 |
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<td width="22%" valign="middle"> </td>
|
| 294 |
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<td width="78%" class="vtable">
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| 295 |
|
|
<input name="req128" type="checkbox" id="req128" value="yes" <?php if ($pconfig['req128'] == "yes") echo "checked"; ?>>
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<strong>Require 128-bit encryption</strong><br>
|
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When set, 128-bit encryption will be accepted. Otherwise,
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| 298 |
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40-bit and 56-bit encryption will be accepted, too. Note that
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| 299 |
|
|
encryption will always be forced on PPTP connections (i.e.
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| 300 |
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unencrypted connections will not be accepted).</td>
|
| 301 |
|
|
</tr>
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| 302 |
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<tr>
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| 303 |
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<td width="22%" valign="top"> </td>
|
| 304 |
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<td width="78%">
|
| 305 |
|
|
<input name="Submit" type="submit" class="formbtn" value="Save" onclick="enable_change(true)">
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| 306 |
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</td>
|
| 307 |
|
|
</tr>
|
| 308 |
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<tr>
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| 309 |
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<td width="22%" valign="top"> </td>
|
| 310 |
|
|
<td width="78%"><span class="vexpl"><span class="red"><strong>Note:<br>
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</strong></span>don't forget to add a firewall rule to permit
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traffic from PPTP clients!</span></td>
|
| 313 |
|
|
</tr>
|
| 314 |
|
|
</table>
|
| 315 |
|
|
</td>
|
| 316 |
|
|
</tr>
|
| 317 |
|
|
</table>
|
| 318 |
|
|
</form>
|
| 319 |
|
|
<script language="JavaScript">
|
| 320 |
|
|
<!--
|
| 321 |
|
|
enable_change(false);
|
| 322 |
|
|
//-->
|
| 323 |
|
|
</script>
|
| 324 |
|
|
<?php include("fend.inc"); ?>
|
| 325 |
|
|
</body>
|
| 326 |
|
|
</html>
|
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|
| 328 |
|
|
<?php
|
| 329 |
|
|
|
| 330 |
|
|
function add_default_pptp_rule() {
|
| 331 |
|
|
global $config;
|
| 332 |
|
|
|
| 333 |
|
|
$specialsrcdst = explode(" ", "any lan pptp");
|
| 334 |
|
|
if (!is_array($config['filter']['rule'])) $config['filter']['rule'] = array();
|
| 335 |
|
|
filter_rules_sort();
|
| 336 |
|
|
$a_filter = &$config['filter']['rule'];
|
| 337 |
|
|
$filterent = array();
|
| 338 |
|
|
$filterent['type'] = "pass";
|
| 339 |
|
|
$filterent['interface'] = "pptp";
|
| 340 |
|
|
|
| 341 |
|
|
unset($filterent['max-src-nodes']);
|
| 342 |
|
|
unset($filterent['max-src-states']);
|
| 343 |
|
|
unset($filterent['protocol']);
|
| 344 |
|
|
unset($filterent['icmptype']);
|
| 345 |
|
|
|
| 346 |
|
|
pconfig_to_address($filterent['source'], "any",
|
| 347 |
|
|
$_POST['srcmask'], $_POST['srcnot'],
|
| 348 |
|
|
$_POST['srcbeginport'], $_POST['srcendport']);
|
| 349 |
|
|
|
| 350 |
|
|
pconfig_to_address($filterent['destination'], "any",
|
| 351 |
|
|
$_POST['dstmask'], $_POST['dstnot'],
|
| 352 |
|
|
$_POST['dstbeginport'], $_POST['dstendport']);
|
| 353 |
|
|
|
| 354 |
|
|
$filterent['disabled'] = false;
|
| 355 |
|
|
$filterent['log'] = false;
|
| 356 |
|
|
$filterent['frags'] = false;
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$filterent['descr'] = "Default PPTP -> any";
|
| 358 |
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$a_filter[] = $filterent;
|
| 359 |
|
|
write_config();
|
| 360 |
|
|
|
| 361 |
|
|
}
|
| 362 |
|
|
|
| 363 |
|
|
function pconfig_to_address(&$adr, $padr, $pmask, $pnot, $pbeginport, $pendport) {
|
| 364 |
|
|
|
| 365 |
|
|
$adr = array();
|
| 366 |
|
|
|
| 367 |
|
|
if ($padr == "any")
|
| 368 |
|
|
$adr['any'] = true;
|
| 369 |
|
|
else if (is_specialnet($padr))
|
| 370 |
|
|
$adr['network'] = $padr;
|
| 371 |
|
|
else {
|
| 372 |
|
|
$adr['address'] = $padr;
|
| 373 |
|
|
if ($pmask != 32)
|
| 374 |
|
|
$adr['address'] .= "/" . $pmask;
|
| 375 |
|
|
}
|
| 376 |
|
|
|
| 377 |
|
|
$adr['not'] = $pnot ? true : false;
|
| 378 |
|
|
|
| 379 |
|
|
if (($pbeginport != 0) && ($pbeginport != "any")) {
|
| 380 |
|
|
if ($pbeginport != $pendport)
|
| 381 |
|
|
$adr['port'] = $pbeginport . "-" . $pendport;
|
| 382 |
|
|
else
|
| 383 |
|
|
$adr['port'] = $pbeginport;
|
| 384 |
|
|
}
|
| 385 |
|
|
}
|
| 386 |
|
|
|
| 387 |
|
|
?>
|