pfSense

<?php

/* $Id$ */

/*

	system_advanced_firewall.php

	part of pfSense

	Copyright (C) 2005-2007 Scott Ullrich

	Copyright (C) 2008 Shrew Soft Inc

	originally part of m0n0wall (http://m0n0.ch/wall)

	Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.

	All rights reserved.

	Redistribution and use in source and binary forms, with or without

	modification, are permitted provided that the following conditions are met:

	1. Redistributions of source code must retain the above copyright notice,

	   this list of conditions and the following disclaimer.

	2. Redistributions in binary form must reproduce the above copyright

	   notice, this list of conditions and the following disclaimer in the

	   documentation and/or other materials provided with the distribution.

	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,

	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

	AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

	AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,

	OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

	POSSIBILITY OF SUCH DAMAGE.

*/

	pfSense_MODULE:	system

*/

##|+PRIV

##|*IDENT=page-system-advanced-firewall

##|*NAME=System: Advanced: Firewall and NAT page

##|*DESCR=Allow access to the 'System: Advanced: Firewall and NAT' page.

##|*MATCH=system_advanced.php*

##|-PRIV

require("guiconfig.inc");

require_once("filter.inc");

require_once("shaper.inc");

$pconfig['disablefilter'] = $config['system']['disablefilter'];

$pconfig['rfc959workaround'] = $config['system']['rfc959workaround'];

$pconfig['scrubnodf'] = $config['system']['scrubnodf'];

$pconfig['optimization'] = $config['filter']['optimization'];

$pconfig['maximumstates'] = $config['system']['maximumstates'];

	$pconfig['disablebinatreflection'] = "yes";

else

	$pconfig['disablebinatreflection'] = "";

$pconfig['disablescrub'] = isset($config['system']['disablescrub']);

if ($_POST) {

	unset($input_errors);

	$pconfig = $_POST;

	/* input validation */

	if ($_POST['maximumstates'] && !is_numericint($_POST['maximumstates'])) {

		$input_errors[] = gettext("The Firewall Maximum Table Entries value must be an integer.");

	}

		$input_errors[] = gettext("The Reflection timeout must be an integer.");

	}

    ob_flush();

    flush();

	if (!$input_errors) {

		if($_POST['disablefilter'] == "yes")

			$config['system']['disablefilter'] = "enabled";

		else

			unset($config['system']['disablefilter']);

		if($_POST['rfc959workaround'] == "yes")

			$config['system']['rfc959workaround'] = "enabled";

		else

			unset($config['system']['rfc959workaround']);

		if($_POST['scrubnodf'] == "yes")

			$config['system']['scrubnodf'] = "enabled";

		else

			unset($config['system']['scrubnodf']);

                        $config['system']['scrubrnid'] = "enabled";

                else

                        unset($config['system']['scrubrnid']);

		$config['system']['maximumstates'] = $_POST['maximumstates'];

		if($_POST['disablenatreflection'] == "yes")

			$config['system']['disablenatreflection'] = $_POST['disablenatreflection'];

		else

			unset($config['system']['disablenatreflection']);

		if($_POST['disablebinatreflection'] == "yes")

			unset($config['system']['enablebinatreflection']);

		else

			$config['system']['enablebinatreflection'] = "yes";

			$config['system']['enablenatreflectionhelper'] = "yes";

		else

			unset($config['system']['enablenatreflectionhelper']);

		if($_POST['disablescrub'] == "yes")

			$config['system']['disablescrub'] = $_POST['disablescrub'];

		else

			unset($config['system']['disablescrub']);

			$config['system']['tftpinterface'] = implode(",", $_POST['tftpinterface']);

		else

			unset($config['system']['tftpinterface']);

		 * XXX: This is a kludge here but its the better place than on every filter reload.

		 * NOTE: This is only for setting the ipfw state limits. 

		 */

		if ($_POST['maximumstates'] && is_numeric($_POST['maximumstates']) && is_module_loaded("ipfw.ko"))

			filter_load_ipfw();

		$retval = filter_configure();

		if(stristr($retval, "error") <> true)

		    $savemsg = get_std_save_message($retval);

		else

		    $savemsg = $retval;

	}

}

?>

<body link="#0000CC" vlink="#0000CC" alink="#0000CC">

<?php include("fbegin.inc"); ?>

<script language="JavaScript">

<!--

var descs=new Array(5);

descs[1]="<?=gettext("used for high latency links, such as satellite links.  Expires idle connections later than default");?>";

descs[2]="<?=gettext("expires idle connections quicker. More efficient use of CPU and memory but can drop legitimate connections");?>";

descs[3]="<?=gettext("tries to avoid dropping any legitimate connections at the expense of increased memory usage and CPU utilization.");?>";

function update_description(itemnum) {

        document.forms[0].info.value=descs[itemnum];

}

//-->

</script>

<?php

	if ($input_errors)

		print_input_errors($input_errors);

	if ($savemsg)

		print_info_box($savemsg);

?>

		<table width="100%" border="0" cellpadding="0" cellspacing="0">

			<tr>

				<td class="tabnavtbl">

					<?php

						$tab_array = array();

						$tab_array[] = array(gettext("Firewall / NAT"), true, "system_advanced_firewall.php");

						$tab_array[] = array(gettext("Networking"), false, "system_advanced_network.php");

						$tab_array[] = array(gettext("Miscellaneous"), false, "system_advanced_misc.php");

						$tab_array[] = array(gettext("System Tunables"), false, "system_advanced_sysctl.php");

						$tab_array[] = array(gettext("Notifications"), false, "system_advanced_notifications.php");

					?>

			</tr>

			<tr>

					<div class="tabcont">

						<span class="vexpl">

							<span class="red">

						</span>

						<br/>

						<table width="100%" border="0" cellpadding="6" cellspacing="0">

							<tr>

									<input name="scrubnodf" type="checkbox" id="scrubnodf" value="yes" <?php if (isset($config['system']['scrubnodf'])) echo "checked"; ?> />

									"packets with the don't fragment (DF) bit set. Linux NFS is known to " .

									"do this. This will cause the filter to not drop such packets but " .

									"instead clear the don't fragment bit.");?>

							</tr>

							<tr>

									<input name="scrubrnid" type="checkbox" id="scrubnodf" value="yes" <?php if (isset($config['system']['scrubrnid'])) echo "checked"; ?> />

									"compensate for operating systems that use predicatable values. " .

									"This option only applies to packets that are not fragmented after the " .

									"optional packet reassembly.");?>

							</tr>

							<tr>

									<select onChange="update_description(this.selectedIndex);" name="optimization" id="optimization">

										<option value="high-latency"<?php if($config['system']['optimization']=="high-latency") echo " selected"; ?>><?=gettext("high-latency");?></option>

										<option value="aggressive"<?php if($config['system']['optimization']=="aggressive") echo " selected"; ?>><?=gettext("aggressive");?></option>

										<option value="conservative"<?php if($config['system']['optimization']=="conservative") echo " selected"; ?>><?=gettext("conservative");?></option>

									<br/>

										update_description(document.forms[0].optimization.selectedIndex);

									</script>

									<br/>

							</tr>

							<tr>

									<input name="disablefilter" type="checkbox" id="disablefilter" value="yes" <?php if (isset($config['system']['disablefilter'])) echo "checked"; ?> />

										<?=gettext("Note:  This will turn off NAT!");?>

								</td>

							</tr>

							<tr>

									<input name="disablescrub" type="checkbox" id="disablescrub" value="yes" <?php if (isset($config['system']['disablescrub'])) echo "checked"; ?> />

							</tr>

							<tr>

									<input name="maximumstates" type="text" id="maximumstates" value="<?php echo $pconfig['maximumstates']; ?>" />

									<br/>

							</tr>

								<td width="22%" valign="top" class="vncell"><?=gettext("Firewall Maximum Table Entries");?></td>

								<td width="78%" class="vtable">

									<input name="maximumtableentries" type="text" id="maximumtableentries" value="<?php echo $pconfig['maximumtableentries']; ?>" />

									<br/>

									<strong><?=gettext("Maximum number of table entries for systems such as aliases, sshlockout, snort, etc, combined.");?></strong>

									<br/>

									<span class="vexpl">

										<?=gettext("Note:  Leave this blank for the default.");?>

										<?php if (empty($pconfig['maximumtableentries'])): ?>

									</span>

								</td>

							</tr>

									<input name="bypassstaticroutes" type="checkbox" id="bypassstaticroutes" value="yes" <?php if ($pconfig['bypassstaticroutes']) echo "checked"; ?> />

					 				"leaves through the same interface will not be checked by the firewall. This may be desirable in some situations where " .

									"multiple subnets are connected to the same interface.");?>

								</td>

							</tr>

							<tr>

								<td colspan="2" class="list" height="12">&nbsp;</td>

							</tr>

							<tr>

									<input name="disablenatreflection" type="checkbox" id="disablenatreflection" value="yes" <?php if (isset($config['system']['disablenatreflection'])) echo "checked"; ?> />

								</td>

							</tr>

							<tr>

								<td width="22%" valign="top" class="vncell"><?=gettext("Reflection Timeout");?></td>

								<td width="78%" class="vtable">

									<input name="reflectiontimeout" id="reflectiontimeout" value="<?php echo $config['system']['reflectiontimeout']; ?>" /><br/>

							</tr>

							<tr>

							</tr>

								<td width="22%" valign="top" class="vncell">&nbsp;</td>

								<td width="78%" class="vtable">

									<input name="enablenatreflectionhelper" type="checkbox" id="enablenatreflectionhelper" value="yes" <?php if (isset($config['system']['enablenatreflectionhelper'])) echo "checked"; ?> />

									<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>

									<br/>

									<?=gettext("Currently only applies to 1:1 NAT rules.  Required for full functionality of NAT Reflection for 1:1 NAT.");?>

								</td>

							</tr>

									<select name="tftpinterface[]" multiple="true" class="formselect" size="3">

<?php

										foreach ($ifdescs as $ifent => $ifdesc):

									</select>

							</tr>

								<td colspan="2" class="list" height="12">&nbsp;</td>

							</tr>

							<?php endif; ?>

							<tr>

								<td width="22%" valign="top">&nbsp;</td>

						</table>

					</td>

				</tr>

			</div>

		</table>

	</form>

<?php include("fend.inc"); ?>

</body>

</html>