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<?php
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/* $Id$ */
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/*
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	firewall_virtual_ip.php
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	part of pfSense (http://www.pfsense.com/)
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	Copyright (C) 2005 Bill Marquette <bill.marquette@gmail.com>.
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	All rights reserved.
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	Includes code from m0n0wall which is:
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	Copyright (C) 2003-2005 Manuel Kasper <mk@neon1.net>.
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	All rights reserved.
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	Includes code from pfSense which is:
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	Copyright (C) 2004-2005 Scott Ullrich <geekgod@pfsense.com>.
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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_BUILDER_BINARIES:	/sbin/ifconfig
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	pfSense_MODULE:	interfaces
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*/
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##|+PRIV
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##|*IDENT=page-firewall-virtualipaddresses
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##|*NAME=Firewall: Virtual IP Addresses page
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##|*DESCR=Allow access to the 'Firewall: Virtual IP Addresses' page.
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##|*MATCH=firewall_virtual_ip.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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if (!is_array($config['virtualip']['vip'])) {
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	$config['virtualip']['vip'] = array();
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}
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$a_vip = &$config['virtualip']['vip'];
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if ($_POST) {
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	$pconfig = $_POST;
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	if ($_POST['apply']) {
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		if (file_exists("{$g['tmp_path']}/.firewall_virtual_ip.apply")) {
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                        $toapplylist = unserialize(file_get_contents("{$g['tmp_path']}/.firewall_virtual_ip.apply"));
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			foreach ($toapplylist as $vid => $ovip) {
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				if (!empty($ovip))
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					interface_vip_bring_down($ovip);
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				if ($a_vip[$vid]) {
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                			switch ($a_vip[$vid]['mode']) {
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                			case "ipalias":
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                        			interface_ipalias_configure($a_vip[$vid]);
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                        			break;
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                			case "proxyarp":
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                        			interface_proxyarp_configure($a_vip[$vid]['interface']);
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                        			break;
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                			case "carp":
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                        			interface_carp_configure($a_vip[$vid]);
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						break;
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                			default:
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                        			break;
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					}
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                		}
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        		}
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			@unlink("{$g['tmp_path']}/.firewall_virtual_ip.apply");
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		}
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		$retval = 0;
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		$retval |= filter_configure();
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		$savemsg = get_std_save_message($retval);
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		clear_subsystem_dirty('vip');
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	}
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}
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if ($_GET['act'] == "del") {
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	if ($a_vip[$_GET['id']]) {
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		/* make sure no inbound NAT mappings reference this entry */
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		if (is_array($config['nat']['rule'])) {
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			foreach ($config['nat']['rule'] as $rule) {
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				if($rule['destination']['address'] <> "") {
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					if ($rule['destination']['address'] == $a_vip[$_GET['id']]['subnet']) {
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						$input_errors[] = gettext("This entry cannot be deleted because it is still referenced by at least one NAT mapping.");
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						break;
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					}
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				}
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			}
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		}
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		if ($a_vip[$_GET['id']]['mode'] == "ipalias") {
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			$vipiface = $a_vip[$_GET['id']]['interface'];
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			foreach ($a_vip as $vip) {
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				if ($vip['interface'] == $vipiface && $vip['mode'] == "carp")
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					if (ip_in_subnet($vip['subnet'], gen_subnet($a_vip[$_GET['id']]['subnet'], $a_vip[$_GET['id']]['subnet_bits']) . "/" . $a_vip[$_GET['id']]['subnet_bits']))
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						$input_errors[] = gettext("This entry cannot be deleted because it is still referenced by a CARP IP with the description") . " {$vip['descr']}.";
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			}
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		} else if ($a_vip[$_GET['id']]['mode'] == "carp") {
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			$vipiface = "{$a_vip[$_GET['id']]['interface']}_vip{$a_vip[$_GET['id']]['vhid']}";
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			foreach ($a_vip as $vip) {
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				if ($vipiface == $vip['interface'] && $vip['mode'] == "ipalias")
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					$input_errors[] = gettext("This entry cannot be deleted because it is still referenced by an IP alias entry with the description") . " {$vip['descr']}.";
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			}
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		}
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		if (!$input_errors) {
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			$user = getUserEntry($_SESSION['Username']);
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			if (is_array($user) && userHasPrivilege($user, "user-config-readonly")) {
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				header("Location: firewall_virtual_ip.php");
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				exit;
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			}
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			// Special case since every proxyarp vip is handled by the same daemon.
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			if ($a_vip[$_GET['id']]['mode'] == "proxyarp") {
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				$viface = $a_vip[$_GET['id']]['interface'];
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				unset($a_vip[$_GET['id']]);
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				interface_proxyarp_configure($viface);
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			} else {
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				interface_vip_bring_down($a_vip[$_GET['id']]);
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				unset($a_vip[$_GET['id']]);
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			}
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			if (count($config['virtualip']['vip']) == 0)
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				unset($config['virtualip']['vip']);
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			write_config();
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			header("Location: firewall_virtual_ip.php");
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			exit;
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		}
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	}
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} else if ($_GET['changes'] == "mods")
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	$id = $_GET['id'];
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$pgtitle = array(gettext("Firewall"),gettext("Virtual IP Addresses"));
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include("head.inc");
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?>
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<body link="#0000CC" vlink="#0000CC" alink="#0000CC">
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<?php include("fbegin.inc"); ?>
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<form action="firewall_virtual_ip.php" method="post">
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<?php 
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	if ($input_errors) 
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		print_input_errors($input_errors);
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	else
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	if ($savemsg) 
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		print_info_box($savemsg); 
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	else
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	if (is_subsystem_dirty('vip'))
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		print_info_box_np(gettext("The VIP configuration has been changed.")."<br>".gettext("You must apply the changes in order for them to take effect."));
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?>
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<br>
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<table width="100%" border="0" cellpadding="0" cellspacing="0">
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  <tr><td class="tabnavtbl">
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  <?php
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        /* active tabs */
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        $tab_array = array();
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        $tab_array[] = array(gettext("Virtual IPs"), true, "firewall_virtual_ip.php");
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        $tab_array[] = array(gettext("CARP Settings"), false, "system_hasync.php");
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        display_top_tabs($tab_array);
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  ?>
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  </td></tr>
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  <tr>
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	<td><input type="hidden" id="id" name="id" value="<? echo $id; ?>"></td>
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  </tr>
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  <tr>
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    <td>
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	<div id="mainarea">
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              <table class="tabcont" width="100%" border="0" cellpadding="0" cellspacing="0">
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                <tr>
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                  <td width="30%" class="listhdrr"><?=gettext("Virtual IP address");?></td>
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                  <td width="10%" class="listhdrr"><?=gettext("Interface");?></td>
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                  <td width="10%" class="listhdrr"><?=gettext("Type");?></td>
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                  <td width="40%" class="listhdr"><?=gettext("Description");?></td>
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                  <td width="10%" class="list">
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                    <table border="0" cellspacing="0" cellpadding="1">
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                      <tr>
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			<td width="17"></td>
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                        <td valign="middle"><a href="firewall_virtual_ip_edit.php"><img src="./themes/<?= $g['theme']; ?>/images/icons/icon_plus.gif" width="17" height="17" border="0"></a></td>
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                      </tr>
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                    </table>
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		  </td>
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		</tr>
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			  <?php $i = 0; foreach ($a_vip as $vipent): ?>
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			  <?php if($vipent['subnet'] <> "" or $vipent['range'] <> "" or
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			        $vipent['subnet_bits'] <> "" or (isset($vipent['range']['from']) && $vipent['range']['from'] <> "")): ?>
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                <tr>
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                  <td class="listlr" ondblclick="document.location='firewall_virtual_ip_edit.php?id=<?=$i;?>';">
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					<?php	if (($vipent['type'] == "single") || ($vipent['type'] == "network"))
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								if($vipent['subnet_bits'])
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									echo "{$vipent['subnet']}/{$vipent['subnet_bits']}";
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							if ($vipent['type'] == "range")
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								echo "{$vipent['range']['from']}-{$vipent['range']['to']}";
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					?>
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					<?php if($vipent['mode'] == "carp") echo " (vhid {$vipent['vhid']})"; ?>
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                  </td>
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                  <td class="listr" ondblclick="document.location='firewall_virtual_ip_edit.php?id=<?=$i;?>';">
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                    <?=htmlspecialchars(strtoupper($config['interfaces'][$vipent['interface']]['descr']));?>&nbsp;
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                  </td>
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                  <td class="listr" align="center" ondblclick="document.location='firewall_virtual_ip_edit.php?id=<?=$i;?>';">
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                    <? if($vipent['mode'] == "proxyarp") echo "<img src='./themes/".$g['theme']."/images/icons/icon_parp.gif' title='Proxy ARP'>"; elseif($vipent['mode'] == "carp") echo "<img src='./themes/".$g['theme']."/images/icons/icon_carp.gif' title='CARP'>"; elseif($vipent['mode'] == "other") echo "<img src='./themes/".$g['theme']."/images/icons/icon_other.gif' title='Other'>"; elseif($vipent['mode'] == "ipalias") echo "<img src='./themes/".$g['theme']."/images/icons/icon_ifalias.gif' title='IP Alias'>";?>
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                  </td>
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                  <td class="listbg" ondblclick="document.location='firewall_virtual_ip_edit.php?id=<?=$i;?>';">
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                    <?=htmlspecialchars($vipent['descr']);?>&nbsp;
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                  </td>
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                  <td class="list" nowrap>
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                    <table border="0" cellspacing="0" cellpadding="1">
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                      <tr>
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                        <td valign="middle"><a href="firewall_virtual_ip_edit.php?id=<?=$i;?>"><img src="./themes/<?= $g['theme']; ?>/images/icons/icon_e.gif" width="17" height="17" border="0"></a></td>
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                        <td valign="middle"><a href="firewall_virtual_ip.php?act=del&id=<?=$i;?>" onclick="return confirm('<?=gettext('Do you really want to delete this entry?');?>')"><img src="./themes/<?= $g['theme']; ?>/images/icons/icon_x.gif" width="17" height="17" border="0"></a></td>
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                      </tr>
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                    </table>
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                  </td>
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                </tr>
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		<?php endif; ?>
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                <?php $i++; endforeach; ?>
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                <tr>
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                  <td class="list" colspan="4"></td>
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                  <td class="list">
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                    <table border="0" cellspacing="0" cellpadding="1">
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                      <tr>
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			<td width="17"></td>
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                        <td valign="middle"><a href="firewall_virtual_ip_edit.php"><img src="./themes/<?= $g['theme']; ?>/images/icons/icon_plus.gif" width="17" height="17" border="0"></a></td>
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                      </tr>
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                    </table>
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                  </td>
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                </tr>
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		<tr>
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		  <td colspan="5">
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		      <p><span class="vexpl"><span class="red"><strong><?=gettext("Note:");?><br>
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                      </strong></span><?=gettext("The virtual IP addresses defined on this page may be used in");?><a href="firewall_nat.php"> <?=gettext("NAT"); ?> </a><?=gettext("mappings.");?><br>
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                      <?=gettext("You can check the status of your CARP Virtual IPs and interfaces ");?><a href="carp_status.php"><?=gettext("here");?></a>.</span></p>
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		  </td>
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		</tr>
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              </table>
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	   </div>
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	</table>
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            </form>
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<?php include("fend.inc"); ?>
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</body>
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</html>