#!/usr/local/bin/php . 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. */ require("guiconfig.inc"); $if = $_GET['if']; if ($_POST['if']) $if = $_POST['if']; $iflist = array("lan" => "LAN"); for ($i = 1; isset($config['interfaces']['opt' . $i]); $i++) { $oc = $config['interfaces']['opt' . $i]; if (isset($oc['enable']) && $oc['if'] && (!$oc['bridge'])) { $iflist['opt' . $i] = $oc['descr']; } } if (!$if || !isset($iflist[$if])) $if = "lan"; $pconfig['range_from'] = $config['dhcpd'][$if]['range']['from']; $pconfig['range_to'] = $config['dhcpd'][$if]['range']['to']; $pconfig['deftime'] = $config['dhcpd'][$if]['defaultleasetime']; $pconfig['maxtime'] = $config['dhcpd'][$if]['maxleasetime']; $pconfig['gateway'] = $config['dhcpd'][$if]['gateway']; list($pconfig['wins1'],$pconfig['wins2']) = $config['dhcpd'][$if]['winsserver']; $pconfig['enable'] = isset($config['dhcpd'][$if]['enable']); $pconfig['denyunknown'] = isset($config['dhcpd'][$if]['denyunknown']); $pconfig['staticarp'] = isset($config['dhcpd'][$if]['staticarp']); $ifcfg = $config['interfaces'][$if]; if (!is_array($config['dhcpd'][$if]['staticmap'])) { $config['dhcpd'][$if]['staticmap'] = array(); } staticmaps_sort($if); $a_maps = &$config['dhcpd'][$if]['staticmap']; if ($_POST) { unset($input_errors); $pconfig = $_POST; /* input validation */ if ($_POST['enable']) { $reqdfields = explode(" ", "range_from range_to"); $reqdfieldsn = explode(",", "Range begin,Range end"); do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors); if (($_POST['range_from'] && !is_ipaddr($_POST['range_from']))) { $input_errors[] = "A valid range must be specified."; } if (($_POST['range_to'] && !is_ipaddr($_POST['range_to']))) { $input_errors[] = "A valid range must be specified."; } if (($_POST['gateway'] && !is_ipaddr($_POST['gateway']))) $input_errors[] = "A valid IP address must be specified for the gateway."; if (($_POST['wins1'] && !is_ipaddr($_POST['wins1'])) || ($_POST['wins2'] && !is_ipaddr($_POST['wins2']))) { $input_errors[] = "A valid IP address must be specified for the primary/secondary WINS server."; } if ($_POST['deftime'] && (!is_numeric($_POST['deftime']) || ($_POST['deftime'] < 60))) { $input_errors[] = "The default lease time must be at least 60 seconds."; } if ($_POST['maxtime'] && (!is_numeric($_POST['maxtime']) || ($_POST['maxtime'] < 60) || ($_POST['maxtime'] <= $_POST['deftime']))) { $input_errors[] = "The maximum lease time must be at least 60 seconds and higher than the default lease time."; } if (!$input_errors) { /* make sure the range lies within the current subnet */ $subnet_start = (ip2long($ifcfg['ipaddr']) & gen_subnet_mask_long($ifcfg['subnet'])); $subnet_end = (ip2long($ifcfg['ipaddr']) | (~gen_subnet_mask_long($ifcfg['subnet']))); if ((ip2long($_POST['range_from']) < $subnet_start) || (ip2long($_POST['range_from']) > $subnet_end) || (ip2long($_POST['range_to']) < $subnet_start) || (ip2long($_POST['range_to']) > $subnet_end)) { $input_errors[] = "The specified range lies outside of the current subnet."; } if (ip2long($_POST['range_from']) > ip2long($_POST['range_to'])) $input_errors[] = "The range is invalid (first element higher than second element)."; /* make sure that the DHCP Relay isn't enabled on this interface */ if (isset($config['dhcrelay'][$if]['enable'])) $input_errors[] = "You must disable the DHCP relay on the {$iflist[$if]} interface before enabling the DHCP server."; } } if (!$input_errors) { $config['dhcpd'][$if]['range']['from'] = $_POST['range_from']; $config['dhcpd'][$if]['range']['to'] = $_POST['range_to']; $config['dhcpd'][$if]['defaultleasetime'] = $_POST['deftime']; $config['dhcpd'][$if]['maxleasetime'] = $_POST['maxtime']; $config['dhcpd'][$if]['enable'] = $_POST['enable'] ? true : false; $config['dhcpd'][$if]['denyunknown'] = $_POST['denyunknown'] ? true : false; unset($config['dhcpd'][$if]['winsserver']); if ($_POST['wins1']) $config['dhcpd'][$if]['winsserver'][] = $_POST['wins1']; if ($_POST['wins2']) $config['dhcpd'][$if]['winsserver'][] = $_POST['wins2']; $config['dhcpd'][$if]['gateway'] = $_POST['gateway']; $config['dhcpd'][$if]['staticarp'] = $_POST['staticarp'] ? true : false; write_config(); /* static arp configuration */ if (isset($config['dhcpd'][$if]['staticarp'])) interfaces_staticarp_configure($if); $retval = 0; if (!file_exists($d_sysrebootreqd_path)) { config_lock(); $retval = services_dhcpd_configure(); config_unlock(); } $savemsg = get_std_save_message($retval); if ($retval == 0) { if (file_exists($d_staticmapsdirty_path)) unlink($d_staticmapsdirty_path); } } } if ($_GET['act'] == "del") { if ($a_maps[$_GET['id']]) { unset($a_maps[$_GET['id']]); write_config(); touch($d_staticmapsdirty_path); header("Location: services_dhcp.php?if={$if}"); exit; } } $pgtitle = "Services: DHCP server"; include("head.inc"); ?>

You must apply the changes in order for them to take effect.");?>
$ifname) { if ($ifent == $if) $active = true; else $active = false; $tab_array[] = array($ifname, $active, "services_dhcp.php?if={$ifent}"); } display_top_tabs($tab_array); ?>
  onClick="enable_change(false)"> Enable DHCP server on interface
  > Deny unknown clients
If this is checked, only the clients defined below will get DHCP leases from this server.
Subnet
Subnet mask
Available range -
Range  to 
WINS servers
Gateway
The default is to use the IP of the firewall as the gateway. Specify an alternate gateway here if this is not the correct gateway for your network.
Default lease time seconds
This is used for clients that do not ask for a specific expiration time.
The default is 7200 seconds.
Maximum lease time seconds
This is the maximum lease time for clients that ask for a specific expiration time.
The default is 86400 seconds.
Static ARP
Enable Static ARP entries
 Note: This feature is under development. Only the machines listed below will be able to communicate with the firewall on this NIC. Disabling this has been tested to be broken, a reboot will be required to disable. Be warned!
 
 

Note:
The DNS servers entered in System: General setup (or the DNS forwarder, if enabled)
will be assigned to clients by the DHCP server.

The DHCP lease table can be viewed on the Diagnostics: DHCP leases page.

MAC address IP address Description