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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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	Copyright (C) 2003-2005 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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	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['wins'] = $pptpcfg['wins'];
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$pconfig['req128'] = isset($pptpcfg['req128']);
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$pconfig['n_pptp_units'] = $pptpcfg['n_pptp_units'];
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$pconfig['pptp_subnet'] = $pptpcfg['pptp_subnet'];
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$pconfig['pptp_dns1'] = $pptpcfg['dns1'];
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$pconfig['pptp_dns2'] = $pptpcfg['dns2'];
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$pconfig['radiusenable'] = isset($pptpcfg['radius']['enable']);
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$pconfig['radiusissueips'] = isset($pptpcfg['radius']['radiusissueips']);
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$pconfig['radiussecenable'] = isset($pptpcfg['radius']['server2']['enable']);
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$pconfig['radacct_enable'] = isset($pptpcfg['radius']['accounting']);
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$pconfig['radiusserver'] = $pptpcfg['radius']['server']['ip'];
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$pconfig['radiusserverport'] = $pptpcfg['radius']['server']['port'];
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$pconfig['radiusserveracctport'] = $pptpcfg['radius']['server']['acctport'];
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$pconfig['radiussecret'] = $pptpcfg['radius']['server']['secret'];
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$pconfig['radiusserver2'] = $pptpcfg['radius']['server2']['ip'];
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$pconfig['radiusserver2port'] = $pptpcfg['radius']['server2']['port'];
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$pconfig['radiusserver2acctport'] = $pptpcfg['radius']['server2']['acctport'];
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$pconfig['radiussecret2'] = $pptpcfg['radius']['server2']['secret2'];
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$pconfig['radius_acct_update'] = $pptpcfg['radius']['acct_update'];
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$pconfig['radius_nasip'] = $pptpcfg['radius']['nasip'];
62

    
63
if ($_POST) {
64

    
65
	unset($input_errors);
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	$pconfig = $_POST;
67

    
68
	/* input validation */
69
	if ($_POST['mode'] == "server") {
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		$reqdfields = explode(" ", "localip remoteip");
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		$reqdfieldsn = explode(",", "Server address,Remote start address");
72
		
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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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		}
90
		
91
		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.";
112
		}
113
	} else {
114
		/* turning pptp off, lets dump any custom rules */
115
		$rules = &$config['filter']['rule'];
116
		for($x=0; $x<count($rules); $x++) {
117
			if($rules[$x]['interface'] == "pptp") { 
118
				unset($rules[$x]);
119
			}
120
		}
121
		unset($config['pptpd']['mode']);
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123
		write_config();
124
	}
125

    
126
	if (!$input_errors) {
127
		$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['wins'] = $_POST['wins'];
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		$pptpcfg['n_pptp_units'] = $_POST['n_pptp_units'];	
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		$pptpcfg['pptp_subnet'] = $_POST['pptp_subnet'];
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		$pptpcfg['radius']['server']['ip'] = $_POST['radiusserver'];
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		$pptpcfg['radius']['server']['port'] = $_POST['radiusserverport'];
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		$pptpcfg['radius']['server']['acctport'] = $_POST['radiusserveracctport'];
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		$pptpcfg['radius']['server']['secret'] = $_POST['radiussecret'];
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		$pptpcfg['radius']['server2']['ip'] = $_POST['radiusserver2'];
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		$pptpcfg['radius']['server2']['port'] = $_POST['radiusserver2port'];
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		$pptpcfg['radius']['server2']['acctport'] = $_POST['radiusserver2acctport'];
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		$pptpcfg['radius']['server2']['secret2'] = $_POST['radiussecret2'];
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		$pptpcfg['radius']['nasip'] = $_POST['radius_nasip'];
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		$pptpcfg['radius']['acct_update'] = $_POST['radius_acct_update'];
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145
 		if ($_POST['pptp_dns1'] == "") 
146
        		unset($pptpcfg['dns1']);
147
		else
148
			$pptpcfg['dns1'] = $_POST['pptp_dns1'];
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150
 		if ($_POST['pptp_dns2'] == "") 
151
        		unset($pptpcfg['dns2']);
152
		else
153
			$pptpcfg['dns2'] = $_POST['pptp_dns2'];
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155
		if($_POST['req128'] == "yes") 
156
			$pptpcfg['req128'] = true;
157
		else
158
			unset($pptpcfg['req128']);
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160
		if($_POST['radiusenable'] == "yes") 
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			$pptpcfg['radius']['server']['enable'] = true;
162
		else 
163
			unset($pptpcfg['radius']['server']['enable']);
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		if($_POST['radiussecenable'] == "yes") 
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			$pptpcfg['radius']['server']['enable'] = true;
167
		else 
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			unset($pptpcfg['radius']['server2']['enable']);
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170
		if($_POST['radacct_enable'] == "yes") 
171
			$pptpcfg['radius']['accounting'] = true;
172
		else 
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			unset($pptpcfg['radius']['accounting']);
174
		
175
		if($_POST['radiusissueips'] == "yes") {
176
			$pptpcfg['radius']['radiusissueips'] = true;
177
		} else
178
			unset($pptpcfg['radius']['radiusissueips']);
179
		
180
		write_config();
181
		
182
		$retval = 0;
183
		
184
		config_lock();
185
		$retval = vpn_setup();
186
		config_unlock();
187
		
188
		$savemsg = get_std_save_message($retval);
189
		
190
		filter_configure();
191
	}
192
}
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$pgtitle = array("VPN","VPN PPTP");
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include("head.inc");
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?>
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<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
200
<?php include("fbegin.inc"); ?>
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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)
207
			return obj[i].value;
208
	}
209
	return null;
210
}
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212
function enable_change(enable_over) {
213
	if ((get_radio_value(document.iform.mode) == "server") || enable_over) {
214
		document.iform.remoteip.disabled = 0;
215
		document.iform.localip.disabled = 0;
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		document.iform.req128.disabled = 0;
217
		document.iform.radiusenable.disabled = 0;
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		document.iform.radiusissueips.disabled = 0;
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		document.iform.wins.disabled = 0;
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		document.iform.n_pptp_units.disabled = 0;
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		document.iform.pptp_subnet.disabled = 0;	
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		document.iform.pptp_dns1.disabled = 0;
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		document.iform.pptp_dns2.disabled = 0;	
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225
		if (document.iform.radiusenable.checked || enable_over) {
226
			document.iform.radiussecenable.disabled = 0;
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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.radiusserverport.disabled = 0;
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			document.iform.radiusserveracctport.disabled = 0;
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			document.iform.radiussecret.disabled = 0;
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			document.iform.radius_nasip.disabled = 0;	
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			document.iform.radius_acct_update.disabled = 0;	
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			document.iform.radiusissueips.disabled = 0;		
235
			if (document.iform.radiussecenable.checked || enable_over) {
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				document.iform.radiusserver2.disabled = 0;
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				document.iform.radiussecret2.disabled = 0;
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				document.iform.radiusserver2port.disabled = 0;
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				document.iform.radiusserver2acctport.disabled = 0;
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			} else {
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				document.iform.radiusserver2.disabled = 1;
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				document.iform.radiussecret2.disabled = 1;
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				document.iform.radiusserver2port.disabled = 1;
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				document.iform.radiusserver2acctport.disabled = 1;
246
			}	
247
		} else {
248
			document.iform.radacct_enable.disabled = 1;
249
			document.iform.radiusserver.disabled = 1;
250
			document.iform.radiusserverport.disabled = 1;
251
			document.iform.radiusissueips.disabled = 1;
252
			document.iform.radiusserveracctport.disabled = 1;
253
			document.iform.radiussecret.disabled = 1;
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			document.iform.radius_nasip.disabled = 1;	
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			document.iform.radius_acct_update.disabled = 1;	
256
			document.iform.radiusissueips.disabled = 1;
257
		}
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259
	} else {
260
		document.iform.remoteip.disabled = 1;
261
		document.iform.localip.disabled = 1;
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		document.iform.req128.disabled = 1;
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		document.iform.n_pptp_units.disabled = 1;
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		document.iform.pptp_subnet.disabled = 1;	
265
		document.iform.pptp_dns1.disabled = 1;
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		document.iform.pptp_dns2.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.radiusserverport.disabled = 1;
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		document.iform.radiusissueips.disabled = 1;
272
		document.iform.radiusserveracctport.disabled = 1;
273
		document.iform.radiussecret.disabled = 1;
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		document.iform.radius_nasip.disabled = 1;	
275
		document.iform.radius_acct_update.disabled = 1;
276
		document.iform.radiussecenable.disabled = 1;
277
		document.iform.radiusserver2.disabled = 1;
278
		document.iform.radiusserver2port.disabled = 1;
279
		document.iform.radiusserver2acctport.disabled = 1;
280
		document.iform.radiussecret2.disabled = 1;	
281
		document.iform.wins.disabled = 1;
282
		document.iform.radiusissueips.disabled = 1;
283
	}
284
	if ((get_radio_value(document.iform.mode) == "redir") || enable_over) {
285
		document.iform.redir.disabled = 0;
286
	} else {
287
		document.iform.redir.disabled = 1;
288
	}
289
}
290
//-->
291
</script>
292
<form action="vpn_pptp.php" method="post" name="iform" id="iform">
293
<?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">
296
  <tr><td class="tabnavtbl">
297
<?php
298
	$tab_array = array();
299
	$tab_array[0] = array("Configuration", true, "vpn_pptp.php");
300
	$tab_array[1] = array("Users", false, "vpn_pptp_users.php");
301
	display_top_tabs($tab_array);
302
?>  
303
  </td></tr>
304
  <tr> 
305
    <td>
306
<div id="mainarea">
307
              <table class="tabcont" width="100%" border="0" cellpadding="6" cellspacing="0">
308
                <tr> 
309
                  <td width="22%" valign="top" class="vtable">&nbsp;</td>
310
                  <td width="78%" class="vtable"> 
311
                    <input name="mode" type="radio" onclick="enable_change(false)" value="off"
312
				  	<?php if (($pconfig['mode'] != "server") && ($pconfig['mode'] != "redir")) echo "checked";?>>
313
                    Off</td>
314
                <tr> 
315
                  <td width="22%" valign="top" class="vtable">&nbsp;</td>
316
                  <td width="78%" class="vtable">
317
			<input type="radio" name="mode" value="redir" onclick="enable_change(false)" <?php if ($pconfig['mode'] == "redir") echo "checked"; ?>>
318
                    Redirect incoming PPTP connections to:</td>
319
                <tr> 
320
                  <td width="22%" valign="top" class="vncellreq">PPTP redirection</td>
321
                  <td width="78%" class="vtable"> 
322
                    <?=$mandfldhtml;?><input name="redir" type="text" class="formfld unknown" id="redir" size="20" value="<?=htmlspecialchars($pconfig['redir']);?>"> 
323
                    <br>
324
                    Enter the IP address of a host which will accept incoming 
325
                    PPTP connections.</td>
326
                <tr> 
327
                  <td width="22%" valign="top" class="vtable">&nbsp;</td>
328
                  <td width="78%" class="vtable">
329
			<input type="radio" name="mode" value="server" onclick="enable_change(false)" <?php if ($pconfig['mode'] == "server") echo "checked"; ?>>
330
                    Enable PPTP server</td>
331
                </tr>
332
                <tr> 
333
                  <td width="22%" valign="top" class="vncellreq">Server address</td>
334
                  <td width="78%" class="vtable"> 
335
                    <?=$mandfldhtml;?><input name="localip" type="text" class="formfld unknown" id="localip" size="20" value="<?=htmlspecialchars($pconfig['localip']);?>"> 
336
                    <br>
337
                    Enter the IP address the PPTP server should use on its side 
338
                    for all clients.</td>
339
                </tr>
340
                <tr> 
341
                  <td width="22%" valign="top" class="vncellreq">Remote address 
342
                    range</td>
343
                  <td width="78%" class="vtable"> 
344
                    <?=$mandfldhtml;?><input name="remoteip" type="text" class="formfld unknown" id="remoteip" size="20" value="<?=htmlspecialchars($pconfig['remoteip']);?>">
345
                    <br>
346
                    Specify the starting address for the client IP address subnet.<br>
347
                </tr>
348
                <tr> 
349
                  <td width="22%" valign="top" class="vncellreq">Subnet netmask</td>
350
                  <td width="78%" class="vtable">
351
		    <select id="pptp_subnet" name="pptp_subnet">
352
		    <?php
353
		     for($x=0; $x<33; $x++) {
354
			if($x == $pconfig['pptp_subnet'])
355
				$SELECTED = " SELECTED";
356
			else
357
				$SELECTED = "";
358
			echo "<option value=\"{$x}\"{$SELECTED}>{$x}</option>\n";			
359
		     }
360
		    ?>
361
		    </select>
362
		    <br>Hint: 24 is 255.255.255.0
363
                  </td>
364
		</tr>
365
                <tr> 
366
                  <td width="22%" valign="top" class="vncellreq">No. PPTP users</td>
367
                  <td width="78%" class="vtable">
368
		    <select id="n_pptp_units" name="n_pptp_units">
369
		    <?php
370
		     for($x=0; $x<255; $x++) {
371
			if($x == $pconfig['n_pptp_units'])
372
				$SELECTED = " SELECTED";
373
			else
374
				$SELECTED = "";
375
			echo "<option value=\"{$x}\"{$SELECTED}>{$x}</option>\n";			
376
		     }
377
		    ?>
378
		    </select>
379
		    <br>Hint: 10 is TEN pptp clients
380
                  </td>
381
                </tr>
382
                <tr> 
383
                  <td width="22%" valign="top" class="vncellreq">PPTP DNS Servers</td>
384
                  <td width="78%" class="vtable"> 
385
                    <?=$mandfldhtml;?><input name="pptp_dns1" type="text" class="formfld unknown" id="pptp_dns1" size="20" value="<?=htmlspecialchars($pconfig['pptp_dns1']);?>">
386
                    <br>
387
			<input name="pptp_dns2" type="text" class="formfld unknown" id="pptp_dns2" size="20" value="<?=htmlspecialchars($pconfig['pptp_dns2']);?>">
388
                    <br>
389

    
390
                   primary and secondary dns servers for pptp clients<br>
391
                </tr>
392
                <tr>
393
                  <td width="22%" valign="top" class="vncell">RADIUS issued IP's</td>
394
                  <td width="78%" valign="top" class="vtable">
395
                      <input name="radiusissueips" value="yes" type="checkbox" class="formfld" id="radiusissueips"<?php if(isset($pconfig['radiusissueips'])) echo " checked=\"checked\""; ?> />
396
                  </td>
397
                </tr>
398
                <tr> 
399
                  <td width="22%" valign="top" class="vncell">WINS Server</td>
400
                  <td width="78%" valign="top" class="vtable">
401
                      <input name="wins" class="formfld unknown" id="wins" size="20" value="<?=htmlspecialchars($pconfig['wins']);?>">
402
                  </td>
403
                </tr>
404
                <tr> 
405
                  <td width="22%" valign="top" class="vncell">RADIUS</td>
406
                  <td width="78%" class="vtable"> 
407
                      <input name="radiusenable" type="checkbox" id="radiusenable" onclick="enable_change(false)" value="yes" <?php if ($pconfig['radiusenable']) echo "checked"; ?>>
408
                      <strong>Use a RADIUS server for authentication</strong><br>
409
                      When set, all users will be authenticated using 
410
                      the RADIUS server specified below. The local user database 
411
                      will not be used.<br>
412
                      <br>
413
                      <input name="radacct_enable" type="checkbox" id="radacct_enable" onclick="enable_change(false)" value="yes" <?php if ($pconfig['radacct_enable']) echo "checked"; ?>>
414
                      <strong>Enable RADIUS accounting <br>
415
                      </strong>Sends accounting packets to the RADIUS server.<br>
416
			 <br>
417
                      <input name="radiussecenable" type="checkbox" id="radiussecenable" onclick="enable_change(false)" value="yes" <?php if ($pconfig['radiussecenable']) echo "checked"; ?>>
418
                      <strong>backup RADIUS server for failover authentication</strong><br>
419
                      When set, if primary radius fails all request will go to the backup server</td>
420
                </tr>
421
                <tr> 
422
                  <td width="22%" valign="top" class="vncell">Radius NAS IP</td>
423
                  <td width="78%" valign="top" class="vtable">
424
                      <input name="radius_nasip" class="formfld unknown" id="radius_nasip" size="20" value="<?=htmlspecialchars($pconfig['radius_nasip']);?>">
425
                  </td>
426
		  </tr>
427
                <tr> 
428
                  <td width="22%" valign="top" class="vncell">Radius Accounting Update</td>
429
                  <td width="78%" valign="top" class="vtable">
430
                      <input name="radius_acct_update" class="formfld unknown" id="radius_acct_update" size="20" value="<?=htmlspecialchars($pconfig['radius_acct_update']);?>">
431
                  </td>
432
		  </tr>
433
                <tr> 
434
                  <td width="22%" valign="top" class="vncell">RADIUS issued IP's</td>
435
                  <td width="78%" valign="top" class="vtable">
436
                      <input name="radiusissueips" value="yes" type="checkbox" class="formfld" id="radiusissueips"<?php if($pconfig['radiusissueips']) echo " CHECKED"; ?>>
437
                      <br>Issue IP Addresses via RADIUS server.
438
                 </td>
439
                </tr>
440
                <tr> 
441
                  <td width="22%" valign="top" class="vncell">RADIUS server </td>
442
                  <td width="78%" class="vtable">
443
                      <input name="radiusserver" type="text" class="formfld unknown" id="radiusserver" size="20" value="<?=htmlspecialchars($pconfig['radiusserver']);?>">
444
                      <input name="radiusserverport" type="text" class="formfld unknown" id="radiusserverport" size="4" value="<?=htmlspecialchars($pconfig['radiusserverport']);?>">
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                      <input name="radiusserveracctport" type="text" class="formfld unknown" id="radiusserveracctport" size="4" value="<?=htmlspecialchars($pconfig['radiusserveracctport']);?>">
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                      <br>
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                      Enter the IP address of the RADIUS server.</td>
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                </tr>
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                <tr> 
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                  <td width="22%" valign="top" class="vncell">RADIUS shared secret</td>
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                  <td width="78%" valign="top" class="vtable">
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                      <input name="radiussecret" type="password" class="formfld pwd" id="radiussecret" size="20" value="<?=htmlspecialchars($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.</td>
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                </tr>
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                <tr> 
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                  <td width="22%" valign="top" class="vncell">BACKUP RADIUS server </td>
459
                  <td width="78%" class="vtable">
460
                      <input name="radiusserver2" type="text" class="formfld unknown" id="radiusserver2" size="20" value="<?=htmlspecialchars($pconfig['radiusserver2']);?>">
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                      <input name="radiusserver2port" type="text" class="formfld unknown" id="radiusserver2port" size="4" value="<?=htmlspecialchars($pconfig['radiusserver2port']);?>">
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                      <input name="radiusserver2acctport" type="text" class="formfld unknown" id="radiusserver2acctport" size="4" value="<?=htmlspecialchars($pconfig['radiusserver2acctport']);?>">
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                      <br>
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                      Enter the IP address of the RADIUS server.</td>
465
                </tr>
466
                <tr> 
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                  <td width="22%" valign="top" class="vncell">BACKUP RADIUS shared secret</td>
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                  <td width="78%" valign="top" class="vtable">
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                      <input name="radiussecret2" type="password" class="formfld pwd" id="radiussecret2" size="20" value="<?=htmlspecialchars($pconfig['radiussecret2']);?>">
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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.</td>
473
                </tr>
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                <tr> 
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                  <td height="16" colspan="2" valign="top"></td>
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                </tr>
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                <tr> 
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                  <td width="22%" valign="middle">&nbsp;</td>
479
                  <td width="78%" class="vtable"> 
480
                    <input name="req128" type="checkbox" id="req128" value="yes" <?php if ($pconfig['req128']) 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, 
483
                    40-bit and 56-bit encryption will be accepted, too. Note that 
484
                    encryption will always be forced on PPTP connections (i.e. 
485
                    unencrypted connections will not be accepted).</td>
486
                </tr>
487
                <tr> 
488
                  <td width="22%" valign="top">&nbsp;</td>
489
                  <td width="78%"> 
490
                    <input name="Submit" type="submit" class="formbtn" value="Save" onclick="enable_change(true)"> 
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                  </td>
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                </tr>
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                <tr> 
494
                  <td width="22%" valign="top">&nbsp;</td>
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                  <td width="78%"><span class="vexpl"><span class="red"><strong>Note:<br>
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                    </strong></span>don't forget to <a href="firewall_rules.php?if=pptp">add a firewall rule</a> to permit 
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                    traffic from PPTP clients!</span></td>
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                </tr>
499
              </table>
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</div>
501
			</td>
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	</tr>
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</table>
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</form>
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<script language="JavaScript">
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<!--
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enable_change(false);
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//-->
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</script>
510
<?php include("fend.inc"); ?>
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</body>
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</html>
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