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univnautes / usr / local / www / system_advanced_firewall.php @ a1b66bec

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<?php
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/* $Id$ */
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/*
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	system_advanced_firewall.php
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	part of pfSense
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	Copyright (C) 2005-2007 Scott Ullrich
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	Copyright (C) 2008 Shrew Soft Inc
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	originally part of m0n0wall (http://m0n0.ch/wall)
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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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	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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/*
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	pfSense_MODULE:	system
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*/
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##|+PRIV
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##|*IDENT=page-system-advanced-firewall
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##|*NAME=System: Advanced: Firewall and NAT page
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##|*DESCR=Allow access to the 'System: Advanced: Firewall and NAT' page.
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##|*MATCH=system_advanced_firewall.php*
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##|-PRIV
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require("guiconfig.inc");
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require_once("functions.inc");
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require_once("filter.inc");
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require_once("shaper.inc");
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$pconfig['disablefilter'] = $config['system']['disablefilter'];
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$pconfig['rfc959workaround'] = $config['system']['rfc959workaround'];
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$pconfig['scrubnodf'] = $config['system']['scrubnodf'];
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$pconfig['scrubrnid'] = $config['system']['scrubrnid'];
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$pconfig['tcpidletimeout'] = $config['filter']['tcpidletimeout'];
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$pconfig['optimization'] = $config['filter']['optimization'];
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$pconfig['adaptivestart'] = $config['system']['adaptivestart'];
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$pconfig['adaptiveend'] = $config['system']['adaptiveend'];
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$pconfig['maximumstates'] = $config['system']['maximumstates'];
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$pconfig['aliasesresolveinterval'] = $config['system']['aliasesresolveinterval'];
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$old_aliasesresolveinterval = $config['system']['aliasesresolveinterval'];
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$pconfig['checkaliasesurlcert'] = isset($config['system']['checkaliasesurlcert']);
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$pconfig['maximumtableentries'] = $config['system']['maximumtableentries'];
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$pconfig['disablereplyto'] = isset($config['system']['disablereplyto']);
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$pconfig['disablenegate'] = isset($config['system']['disablenegate']);
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$pconfig['bogonsinterval'] = $config['system']['bogons']['interval'];
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$pconfig['disablenatreflection'] = $config['system']['disablenatreflection'];
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$pconfig['enablebinatreflection'] = $config['system']['enablebinatreflection'];
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$pconfig['reflectiontimeout'] = $config['system']['reflectiontimeout'];
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$pconfig['bypassstaticroutes'] = isset($config['filter']['bypassstaticroutes']);
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$pconfig['disablescrub'] = isset($config['system']['disablescrub']);
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$pconfig['tftpinterface'] = explode(",", $config['system']['tftpinterface']);
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$pconfig['disablevpnrules'] = isset($config['system']['disablevpnrules']);
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if ($_POST) {
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	unset($input_errors);
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	$pconfig = $_POST;
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	/* input validation */
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	if ((empty($_POST['adaptivestart']) && !empty($_POST['adaptiveend'])) || (!empty($_POST['adaptivestart']) && empty($_POST['adaptiveend'])))
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		$input_errors[] = gettext("The Firewall Adaptive values must be set together.");
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	if (!empty($_POST['adaptivestart']) && !is_numericint($_POST['adaptivestart'])) {
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		$input_errors[] = gettext("The Firewall Adaptive Start value must be an integer.");
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	}
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	if (!empty($_POST['adaptiveend']) && !is_numericint($_POST['adaptiveend'])) {
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		$input_errors[] = gettext("The Firewall Adaptive End value must be an integer.");
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	}
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	if ($_POST['maximumstates'] && !is_numericint($_POST['maximumstates'])) {
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		$input_errors[] = gettext("The Firewall Maximum States value must be an integer.");
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	}
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	if ($_POST['aliasesresolveinterval'] && !is_numericint($_POST['aliasesresolveinterval'])) {
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		$input_errors[] = gettext("The Aliases Hostname Resolve Interval value must be an integer.");
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	}
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	if ($_POST['maximumtableentries'] && !is_numericint($_POST['maximumtableentries'])) {
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		$input_errors[] = gettext("The Firewall Maximum Table Entries value must be an integer.");
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	}
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	if ($_POST['tcpidletimeout'] && !is_numericint($_POST['tcpidletimeout'])) {
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		$input_errors[] = gettext("The TCP idle timeout must be an integer.");
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	}
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	if ($_POST['reflectiontimeout'] && !is_numericint($_POST['reflectiontimeout'])) {
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		$input_errors[] = gettext("The Reflection timeout must be an integer.");
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	}
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105
	ob_flush();
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	flush();
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108
	if (!$input_errors) {
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110
		if($_POST['disablefilter'] == "yes")
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			$config['system']['disablefilter'] = "enabled";
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		else
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			unset($config['system']['disablefilter']);
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115
		if($_POST['disablevpnrules'] == "yes")
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			$config['system']['disablevpnrules'] = true;
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		else
118
			unset($config['system']['disablevpnrules']);
119
		if($_POST['rfc959workaround'] == "yes")
120
			$config['system']['rfc959workaround'] = "enabled";
121
		else
122
			unset($config['system']['rfc959workaround']);
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124
		if($_POST['scrubnodf'] == "yes")
125
			$config['system']['scrubnodf'] = "enabled";
126
		else
127
			unset($config['system']['scrubnodf']);
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129
		if($_POST['scrubrnid'] == "yes")
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			$config['system']['scrubrnid'] = "enabled";
131
		else
132
			unset($config['system']['scrubrnid']);
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134
		if (!empty($_POST['adaptiveend']))
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			$config['system']['adaptiveend'] = $_POST['adaptiveend'];
136
		else
137
			unset($config['system']['adaptiveend']);
138
		if (!empty($_POST['adaptivestart']))
139
			$config['system']['adaptivestart'] = $_POST['adaptivestart'];
140
		else
141
			unset($config['system']['adaptivestart']);
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143
		if ($_POST['checkaliasesurlcert'] == "yes")
144
			$config['system']['checkaliasesurlcert'] = true;
145
		else
146
			unset($config['system']['checkaliasesurlcert']);
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148
		$config['system']['optimization'] = $_POST['optimization'];
149
		$config['system']['maximumstates'] = $_POST['maximumstates'];
150
		$config['system']['aliasesresolveinterval'] = $_POST['aliasesresolveinterval'];
151
		$config['system']['maximumtableentries'] = $_POST['maximumtableentries'];
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153
		if($_POST['natreflection'] == "proxy") {
154
			unset($config['system']['disablenatreflection']);
155
			unset($config['system']['enablenatreflectionpurenat']);
156
		} else if($_POST['natreflection'] == "purenat") {
157
			unset($config['system']['disablenatreflection']);
158
			$config['system']['enablenatreflectionpurenat'] = "yes";
159
		} else {
160
			$config['system']['disablenatreflection'] = "yes";
161
			unset($config['system']['enablenatreflectionpurenat']);
162
		}
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164
		if($_POST['enablebinatreflection'] == "yes")
165
			$config['system']['enablebinatreflection'] = "yes";
166
		else
167
			unset($config['system']['enablebinatreflection']);
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169
		if($_POST['disablereplyto'] == "yes")
170
			$config['system']['disablereplyto'] = $_POST['disablereplyto'];
171
		else
172
			unset($config['system']['disablereplyto']);
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174
		if($_POST['disablenegate'] == "yes")
175
			$config['system']['disablenegate'] = $_POST['disablenegate'];
176
		else
177
			unset($config['system']['disablenegate']);
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179
		if($_POST['enablenatreflectionhelper'] == "yes")
180
			$config['system']['enablenatreflectionhelper'] = "yes";
181
		else
182
			unset($config['system']['enablenatreflectionhelper']);
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184
		$config['system']['reflectiontimeout'] = $_POST['reflectiontimeout'];
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186
		if($_POST['bypassstaticroutes'] == "yes")
187
			$config['filter']['bypassstaticroutes'] = $_POST['bypassstaticroutes'];
188
		elseif(isset($config['filter']['bypassstaticroutes']))
189
			unset($config['filter']['bypassstaticroutes']);
190

    
191
		if($_POST['disablescrub'] == "yes")
192
			$config['system']['disablescrub'] = $_POST['disablescrub'];
193
		else
194
			unset($config['system']['disablescrub']);
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196
		if ($_POST['tftpinterface'])
197
			$config['system']['tftpinterface'] = implode(",", $_POST['tftpinterface']);
198
		else
199
			unset($config['system']['tftpinterface']);
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201
		if ($_POST['bogonsinterval'] != $config['system']['bogons']['interval']) {
202
			switch ($_POST['bogonsinterval']) {
203
				case 'daily':
204
					install_cron_job("/usr/bin/nice -n20 /etc/rc.update_bogons.sh", true, "1", "3", "*", "*", "*");
205
					break;
206
				case 'weekly':
207
					install_cron_job("/usr/bin/nice -n20 /etc/rc.update_bogons.sh", true, "1", "3", "*", "*", "0");
208
					break;
209
				case 'monthly':
210
					// fall through
211
				default:
212
					install_cron_job("/usr/bin/nice -n20 /etc/rc.update_bogons.sh", true, "1", "3", "1", "*", "*");
213
			}
214
			$config['system']['bogons']['interval'] = $_POST['bogonsinterval'];
215
		}
216

    
217
		write_config();
218

    
219
		// Kill filterdns when value changes, filter_configure() will restart it
220
		if (($old_aliasesresolveinterval != $config['system']['aliasesresolveinterval']) &&
221
		    isvalidpid("{$g['varrun_path']}/filterdns.pid"))
222
			killbypid("{$g['varrun_path']}/filterdns.pid");
223

    
224
		$retval = 0;
225
		$retval = filter_configure();
226
		if(stristr($retval, "error") <> true)
227
			$savemsg = get_std_save_message($retval);
228
		else
229
			$savemsg = $retval;
230
	}
231
}
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233
$pgtitle = array(gettext("System"),gettext("Advanced: Firewall and NAT"));
234
include("head.inc");
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236
?>
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238
<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
239
<?php include("fbegin.inc"); ?>
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241
<script type="text/javascript">
242
//<![CDATA[
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244
var descs=new Array(5);
245
descs[0]="<?=gettext("as the name says, it's the normal optimization algorithm");?>";
246
descs[1]="<?=gettext("used for high latency links, such as satellite links.  Expires idle connections later than default");?>";
247
descs[2]="<?=gettext("expires idle connections quicker. More efficient use of CPU and memory but can drop legitimate idle connections");?>";
248
descs[3]="<?=gettext("tries to avoid dropping any legitimate idle connections at the expense of increased memory usage and CPU utilization.");?>";
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250
function update_description(itemnum) {
251
	document.forms[0].info.value=descs[itemnum];
252

    
253
}
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255
//]]>
256
</script>
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258
<?php
259
	if ($input_errors)
260
		print_input_errors($input_errors);
261
	if ($savemsg)
262
		print_info_box($savemsg);
263
?>
264
	<form action="system_advanced_firewall.php" method="post" name="iform" id="iform">
265
		<table width="100%" border="0" cellpadding="0" cellspacing="0" summary="system advanced firewall/nat">
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			<tr>
267
				<td class="tabnavtbl">
268
					<?php
269
						$tab_array = array();
270
						$tab_array[] = array(gettext("Admin Access"), false, "system_advanced_admin.php");
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						$tab_array[] = array(gettext("Firewall / NAT"), true, "system_advanced_firewall.php");
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						$tab_array[] = array(gettext("Networking"), false, "system_advanced_network.php");
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						$tab_array[] = array(gettext("Miscellaneous"), false, "system_advanced_misc.php");
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						$tab_array[] = array(gettext("System Tunables"), false, "system_advanced_sysctl.php");
275
						$tab_array[] = array(gettext("Notifications"), false, "system_advanced_notifications.php");
276
						display_top_tabs($tab_array);
277
					?>
278
				</td>
279
			</tr>
280
			<tr>
281
				<td id="mainarea">
282
					<div class="tabcont">
283
						<span class="vexpl">
284
							<span class="red">
285
								<strong><?=gettext("NOTE:");?>&nbsp;</strong>
286
							</span>
287
							<?=gettext("The options on this page are intended for use by advanced users only.");?>
288
							<br />
289
						</span>
290
						<br />
291
						<table width="100%" border="0" cellpadding="6" cellspacing="0" summary="main area">
292
							<tr>
293
								<td colspan="2" valign="top" class="listtopic"><?=gettext("Firewall Advanced");?></td>
294
							</tr>
295
							<tr>
296
								<td width="22%" valign="top" class="vncell"><?=gettext("IP Do-Not-Fragment compatibility");?></td>
297
								<td width="78%" class="vtable">
298
									<input name="scrubnodf" type="checkbox" id="scrubnodf" value="yes" <?php if (isset($config['system']['scrubnodf'])) echo "checked=\"checked\""; ?> />
299
									<strong><?=gettext("Clear invalid DF bits instead of dropping the packets");?></strong><br />
300
									<?=gettext("This allows for communications with hosts that generate fragmented " .
301
									"packets with the don't fragment (DF) bit set. Linux NFS is known to " .
302
									"do this. This will cause the filter to not drop such packets but " .
303
									"instead clear the don't fragment bit.");?>
304
								</td>
305
							</tr>
306
							<tr>
307
								<td width="22%" valign="top" class="vncell"><?=gettext("IP Random id generation");?></td>
308
								<td width="78%" class="vtable">
309
									<input name="scrubrnid" type="checkbox" id="scrubrnid" value="yes" <?php if (isset($config['system']['scrubrnid'])) echo "checked=\"checked\""; ?> />
310
									<strong><?=gettext("Insert a stronger id into IP header of packets passing through the filter.");?></strong><br />
311
									<?=gettext("Replaces the IP identification field of packets with random values to " .
312
									"compensate for operating systems that use predictable values. " .
313
									"This option only applies to packets that are not fragmented after the " .
314
									"optional packet reassembly.");?>
315
								</td>
316
							</tr>
317
							<tr>
318
								<td width="22%" valign="top" class="vncell"><?=gettext("Firewall Optimization Options");?></td>
319
								<td width="78%" class="vtable">
320
									<select onchange="update_description(this.selectedIndex);" name="optimization" id="optimization">
321
										<option value="normal"<?php if($config['system']['optimization']=="normal") echo " selected=\"selected\""; ?>><?=gettext("normal");?></option>
322
										<option value="high-latency"<?php if($config['system']['optimization']=="high-latency") echo " selected=\"selected\""; ?>><?=gettext("high-latency");?></option>
323
										<option value="aggressive"<?php if($config['system']['optimization']=="aggressive") echo " selected=\"selected\""; ?>><?=gettext("aggressive");?></option>
324
										<option value="conservative"<?php if($config['system']['optimization']=="conservative") echo " selected=\"selected\""; ?>><?=gettext("conservative");?></option>
325
									</select>
326
									<br />
327
									<textarea readonly="readonly" cols="60" rows="2" id="info" name="info" style="padding:5px; border:1px dashed #990000; background-color: #ffffff; color: #000000; font-size: 8pt;"></textarea>
328
									<script type="text/javascript">
329
									//<![CDATA[
330
										update_description(document.forms[0].optimization.selectedIndex);
331
									//]]>
332
									</script>
333
									<br />
334
									<?=gettext("Select the type of state table optimization to use");?>
335
								</td>
336
							</tr>
337
							<tr>
338
								<td width="22%" valign="top" class="vncell"><?=gettext("Disable Firewall");?></td>
339
								<td width="78%" class="vtable">
340
									<input name="disablefilter" type="checkbox" id="disablefilter" value="yes" <?php if (isset($config['system']['disablefilter'])) echo "checked=\"checked\""; ?> />
341
									<strong><?=gettext("Disable all packet filtering.");?></strong>
342
									<br />
343
									<span class="vexpl"><?php printf(gettext("Note:  This converts %s into a routing only platform!"), $g['product_name']);?><br />
344
										<?=gettext("Note:  This will also turn off NAT!");?>
345
										<br /><?=gettext("If you only want to disable NAT, and not firewall rules, visit the");?> <a href="firewall_nat_out.php"><?=gettext("Outbound NAT");?></a> <?=gettext("page");?>.
346
									</span>
347
								</td>
348
							</tr>
349
							<tr>
350
								<td width="22%" valign="top" class="vncell"><?=gettext("Disable Firewall Scrub");?></td>
351
								<td width="78%" class="vtable">
352
									<input name="disablescrub" type="checkbox" id="disablescrub" value="yes" <?php if (isset($config['system']['disablescrub'])) echo "checked=\"checked\""; ?> />
353
									<strong><?=gettext("Disables the PF scrubbing option which can sometimes interfere with NFS and PPTP traffic.");?></strong>
354
									<br />
355
								</td>
356
							</tr>
357
							<tr>
358
								<td width="22%" valign="top" class="vncell"><?=gettext("Firewall Adaptive Timeouts");?></td>
359
								<td width="78%" class="vtable">
360
									<strong><?=gettext("Timeouts for states can be scaled adaptively as the number of state table entries grows.");?></strong>
361
									<br />
362
									<input name="adaptivestart" type="text" id="adaptivestart" value="<?php echo $pconfig['adaptivestart']; ?>" />
363
									<br /><?=gettext("When the number of state entries exceeds this value, adaptive scaling begins.  All timeout values are scaled linearly with factor (adaptive.end - number of states) / (adaptive.end - adaptive.start).");?>
364

    
365
									<br />
366
									<input name="adaptiveend" type="text" id="adaptiveend" value="<?php echo $pconfig['adaptiveend']; ?>" />
367
									<br /><?=gettext("When reaching this number of state entries, all timeout values become zero, effectively purging all state entries immediately.  This value is used to define the scale factor, it should not actually be reached (set a lower state limit, see below).");?>
368
									<br />
369
									<span class="vexpl"><?=gettext("Note:  Leave this blank for the default(0).");?></span>
370
								</td>
371
							</tr>
372
							<tr>
373
								<td width="22%" valign="top" class="vncell"><?=gettext("Firewall Maximum States");?></td>
374
								<td width="78%" class="vtable">
375
									<input name="maximumstates" type="text" id="maximumstates" value="<?php echo $pconfig['maximumstates']; ?>" />
376
									<br />
377
									<strong><?=gettext("Maximum number of connections to hold in the firewall state table.");?></strong>
378
									<br />
379
									<span class="vexpl"><?=gettext("Note:  Leave this blank for the default.  On your system the default size is:");?> <?= pfsense_default_state_size() ?></span>
380
								</td>
381
							</tr>
382
							<tr>
383
								<td width="22%" valign="top" class="vncell"><?=gettext("Firewall Maximum Table Entries");?></td>
384
								<td width="78%" class="vtable">
385
									<input name="maximumtableentries" type="text" id="maximumtableentries" value="<?php echo $pconfig['maximumtableentries']; ?>" />
386
									<br />
387
									<strong><?=gettext("Maximum number of table entries for systems such as aliases, sshlockout, snort, etc, combined.");?></strong>
388
									<br />
389
									<span class="vexpl">
390
										<?=gettext("Note:  Leave this blank for the default.");?>
391
										<?php if (empty($pconfig['maximumtableentries'])): ?>
392
											<?= gettext("On your system the default size is:");?> <?= pfsense_default_table_entries_size(); ?>
393
										<?php endif; ?>
394
									</span>
395
								</td>
396
							</tr>
397
							<tr>
398
								<td width="22%" valign="top" class="vncell"><?=gettext("Static route filtering");?></td>
399
								<td width="78%" class="vtable">
400
									<input name="bypassstaticroutes" type="checkbox" id="bypassstaticroutes" value="yes" <?php if ($pconfig['bypassstaticroutes']) echo "checked=\"checked\""; ?> />
401
									<strong><?=gettext("Bypass firewall rules for traffic on the same interface");?></strong>
402
									<br />
403
									<?=gettext("This option only applies if you have defined one or more static routes. If it is enabled, traffic that enters and " .
404
									"leaves through the same interface will not be checked by the firewall. This may be desirable in some situations where " .
405
									"multiple subnets are connected to the same interface.");?>
406
									<br />
407
								</td>
408
							</tr>
409
							<tr>
410
								<td width="22%" valign="top" class="vncell">Disable Auto-added VPN rules</td>
411
								<td width="78%" class="vtable">
412
									<input name="disablevpnrules" type="checkbox" id="disablevpnrules" value="yes" <?php if (isset($config['system']['disablevpnrules'])) echo "checked=\"checked\""; ?> />
413
									<strong><?=gettext("Disable all auto-added VPN rules.");?></strong>
414
									<br />
415
									<span class="vexpl"><?=gettext("Note: This disables automatically added rules for IPsec, PPTP.");?>
416
									</span>
417
								</td>
418
							</tr>
419
							<tr>
420
								<td width="22%" valign="top" class="vncell">Disable reply-to</td>
421
								<td width="78%" class="vtable">
422
									<input name="disablereplyto" type="checkbox" id="disablereplyto" value="yes" <?php if ($pconfig['disablereplyto']) echo "checked=\"checked\""; ?> />
423
									<strong><?=gettext("Disable reply-to on WAN rules");?></strong>
424
									<br />
425
									<?=gettext("With Multi-WAN you generally want to ensure traffic leaves the same interface it arrives on, hence reply-to is added automatically by default. " .
426
									"When using bridging, you must disable this behavior if the WAN gateway IP is different from the gateway IP of the hosts behind the bridged interface.");?>
427
									<br />
428
								</td>
429
							</tr>
430
							<tr>
431
								<td width="22%" valign="top" class="vncell">Disable Negate rules</td>
432
								<td width="78%" class="vtable">
433
									<input name="disablenegate" type="checkbox" id="disablenegate" value="yes" <?php if ($pconfig['disablenegate']) echo "checked=\"checked\""; ?> />
434
									<strong><?=gettext("Disable Negate rule on policy routing rules");?></strong>
435
									<br />
436
									<?=gettext("With Multi-WAN you generally want to ensure traffic reaches directly connected networks and VPN networks when using policy routing. You can disable this for special purposes but it requires manually creating rules for these networks");?>
437
									<br />
438
								</td>
439
							</tr>
440
							<tr>
441
								<td width="22%" valign="top" class="vncell"><?=gettext("Aliases Hostnames Resolve Interval");?></td>
442
								<td width="78%" class="vtable">
443
									<input name="aliasesresolveinterval" type="text" id="aliasesresolveinterval" value="<?php echo $pconfig['aliasesresolveinterval']; ?>" />
444
									<br />
445
									<strong><?=gettext("Interval, in seconds, that will be used to resolve hostnames configured on aliases.");?></strong>
446
									<br />
447
									<span class="vexpl"><?=gettext("Note:  Leave this blank for the default (300s).");?></span>
448
								</td>
449
							</tr>
450
							<tr>
451
							<td width="22%" valign="top" class="vncell"><?=gettext("Check certificate of aliases URLs");?></td>
452
								<td width="78%" class="vtable">
453
									<input name="checkaliasesurlcert" type="checkbox" id="checkaliasesurlcert" value="yes" <?php if ($pconfig['checkaliasesurlcert']) echo "checked=\"checked\""; ?> />
454
									<strong><?=gettext("Verify HTTPS certificates when downloading alias URLs");?></strong>
455
									<br />
456
									<?=gettext("Make sure the certificate is valid for all HTTPS addresses on aliases. If it's not valid or is revoked, do not download it.");?>
457
									<br />
458
								</td>
459
							</tr>
460
							<tr>
461
								<td colspan="2" class="list" height="12">&nbsp;</td>
462
							</tr>
463
							<tr>
464
								<td colspan="2" valign="top" class="listtopic"><?=gettext("Bogon Networks");?></td>
465
							</tr>
466
							<tr>
467
								<td width="22%" valign="top" class="vncell"><?=gettext("Update Frequency");?></td>
468
								<td width="78%" class="vtable">
469
									<select name="bogonsinterval" class="formselect">
470
									<option value="monthly" <?php if (empty($pconfig['bogonsinterval']) || $pconfig['bogonsinterval'] == 'monthly') echo "selected=\"selected\""; ?>><?=gettext("Monthly"); ?></option>
471
									<option value="weekly" <?php if ($pconfig['bogonsinterval'] == 'weekly') echo "selected=\"selected\""; ?>><?=gettext("Weekly"); ?></option>
472
									<option value="daily" <?php if ($pconfig['bogonsinterval'] == 'daily') echo "selected=\"selected\""; ?>><?=gettext("Daily"); ?></option>
473
									</select>
474
									<br />
475
									<?=gettext("The frequency of updating the lists of IP addresses that are reserved (but not RFC 1918) or not yet assigned by IANA.");?>
476
								</td>
477
							</tr>
478
							<tr>
479
								<td colspan="2" class="list" height="12">&nbsp;</td>
480
							</tr>
481
							<?php if(count($config['interfaces']) > 1): ?>
482
							<tr>
483
								<td colspan="2" valign="top" class="listtopic"><?=gettext("Network Address Translation");?></td>
484
							</tr>
485
							<tr>
486
								<td width="22%" valign="top" class="vncell"><?=gettext("NAT Reflection mode for port forwards");?></td>
487
								<td width="78%" class="vtable">
488
									<select name="natreflection" class="formselect">
489
									<option value="disable" <?php if (isset($config['system']['disablenatreflection'])) echo "selected=\"selected\""; ?>><?=gettext("Disable"); ?></option>
490
									<option value="proxy" <?php if (!isset($config['system']['disablenatreflection']) && !isset($config['system']['enablenatreflectionpurenat'])) echo "selected=\"selected\""; ?>><?=gettext("Enable (NAT + Proxy)"); ?></option>
491
									<option value="purenat" <?php if (!isset($config['system']['disablenatreflection']) && isset($config['system']['enablenatreflectionpurenat'])) echo "selected=\"selected\""; ?>><?=gettext("Enable (Pure NAT)"); ?></option>
492
									</select>
493
									<br />
494
									<strong><?=gettext("When enabled, this automatically creates additional NAT redirect rules for access to port forwards on your external IP addresses from within your internal networks.");?></strong>
495
									<br /><br />
496
									<?=gettext("The NAT + proxy mode uses a helper program to send packets to the target of the port forward.  It is useful in setups where the interface and/or gateway IP used for communication with the target cannot be accurately determined at the time the rules are loaded.  Reflection rules are not created for ranges larger than 500 ports and will not be used for more than 1000 ports total between all port forwards.  Only TCP and UDP protocols are supported.");?>
497
									<br /><br />
498
									<?=gettext("The pure NAT mode uses a set of NAT rules to direct packets to the target of the port forward.  It has better scalability, but it must be possible to accurately determine the interface and gateway IP used for communication with the target at the time the rules are loaded.  There are no inherent limits to the number of ports other than the limits of the protocols.  All protocols available for port forwards are supported.");?>
499
									<br /><br />
500
									<?=gettext("Individual rules may be configured to override this system setting on a per-rule basis.");?>
501
								</td>
502
							</tr>
503
							<tr>
504
								<td width="22%" valign="top" class="vncell"><?=gettext("Reflection Timeout");?></td>
505
								<td width="78%" class="vtable">
506
									<input name="reflectiontimeout" id="reflectiontimeout" value="<?php echo $config['system']['reflectiontimeout']; ?>" /><br />
507
									<strong><?=gettext("Enter value for Reflection timeout in seconds.");?></strong>
508
									<br /><br />
509
									<?=gettext("Note: Only applies to Reflection on port forwards in NAT + proxy mode.");?>
510
								</td>
511
							</tr>
512
							<tr>
513
								<td width="22%" valign="top" class="vncell"><?=gettext("Enable NAT Reflection for 1:1 NAT");?></td>
514
								<td width="78%" class="vtable">
515
									<input name="enablebinatreflection" type="checkbox" id="enablebinatreflection" value="yes" <?php if (isset($config['system']['enablebinatreflection'])) echo "checked=\"checked\""; ?> />
516
									<strong><?=gettext("Enables the automatic creation of additional NAT redirect rules for access to 1:1 mappings of your external IP addresses from within your internal networks.");?></strong>
517
									<br /><br />
518
									<?=gettext("Note: Reflection on 1:1 mappings is only for the inbound component of the 1:1 mappings.  This functions the same as the pure NAT mode for port forwards.  For more details, refer to the pure NAT mode description above.");?>
519
									<br /><br />
520
									<?=gettext("Individual rules may be configured to override this system setting on a per-rule basis.");?>
521
								</td>
522
							</tr>
523
							<tr>
524
								<td width="22%" valign="top" class="vncell"><?=gettext("Enable automatic outbound NAT for Reflection");?></td>
525
								<td width="78%" class="vtable">
526
									<input name="enablenatreflectionhelper" type="checkbox" id="enablenatreflectionhelper" value="yes" <?php if (isset($config['system']['enablenatreflectionhelper'])) echo "checked=\"checked\""; ?> />
527
									<strong><?=gettext("Automatically create outbound NAT rules which assist inbound NAT rules that direct traffic back out to the same subnet it originated from.");?></strong>
528
									<br />
529
									<?=gettext("Required for full functionality of the pure NAT mode of NAT Reflection for port forwards or NAT Reflection for 1:1 NAT.");?>
530
									<br /><br />
531
									<?=gettext("Note: This only works for assigned interfaces.  Other interfaces require manually creating the outbound NAT rules that direct the reply packets back through the router.");?>
532
								</td>
533
							</tr>
534
							<tr>
535
								<td width="22%" valign="top" class="vncell"><?=gettext("TFTP Proxy");?></td>
536
								<td width="78%" class="vtable">
537
									<select name="tftpinterface[]" multiple="multiple" class="formselect" size="3">
538
<?php
539
										$ifdescs = get_configured_interface_with_descr();
540
										$rowIndex = 0;
541
										foreach ($ifdescs as $ifent => $ifdesc):
542
											$rowIndex++;
543
?>
544
											<option value="<?=$ifent;?>" <?php if (in_array($ifent, $pconfig['tftpinterface'])) echo "selected=\"selected\""; ?>><?=gettext($ifdesc);?></option>
545
<?php									endforeach;
546
										if ($rowIndex == 0)
547
											echo "<option></option>";
548
 ?>
549
									</select>
550
									<strong><?=gettext("Choose the interfaces where you want TFTP proxy helper to be enabled.");?></strong>
551
								</td>
552
							</tr>
553
							<tr>
554
								<td colspan="2" class="list" height="12">&nbsp;</td>
555
							</tr>
556
							<?php endif; ?>
557
							<tr>
558
								<td width="22%" valign="top">&nbsp;</td>
559
								<td width="78%"><input name="Submit" type="submit" class="formbtn" value="<?=gettext("Save");?>" /></td>
560
							</tr>
561
						</table>
562
					</div>
563
				</td>
564
			</tr>
565
		</table>
566
	</form>
567

    
568
<?php include("fend.inc"); ?>
569
</body>
570
</html>
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