From 595c831d2768547d49e6daf147889c6aee15f9a4 Mon Sep 17 00:00:00 2001 From: bmeeks8 Date: Mon, 18 Nov 2013 18:59:41 -0500 Subject: Snort 2.9.5.5 pkg v3.0.0 update --- config/snort/snort_frag3_engine.php | 402 ++++++++++++++++++++++++++++++++++++ 1 file changed, 402 insertions(+) create mode 100644 config/snort/snort_frag3_engine.php (limited to 'config/snort/snort_frag3_engine.php') diff --git a/config/snort/snort_frag3_engine.php b/config/snort/snort_frag3_engine.php new file mode 100644 index 00000000..f344771b --- /dev/null +++ b/config/snort/snort_frag3_engine.php @@ -0,0 +1,402 @@ +. + * All rights reserved. + * + * modified for the pfsense snort package + * Copyright (C) 2009-2010 Robert Zelaya. + * 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_once("guiconfig.inc"); +require_once("/usr/local/pkg/snort/snort.inc"); + +global $g; + +$snortdir = SNORTDIR; + +// Grab the incoming QUERY STRING or POST variables +$id = $_GET['id']; +$eng_id = $_GET['eng_id']; +if (isset($_POST['id'])) + $id = $_POST['id']; +if (isset($_POST['eng_id'])) + $eng_id = $_POST['eng_id']; + +if (is_null($id)) { + header("Location: /snort/snort_interfaces.php"); + exit; +} + +if (!is_array($config['installedpackages']['snortglobal']['rule'])) + $config['installedpackages']['snortglobal']['rule'] = array(); +if (!is_array($config['installedpackages']['snortglobal']['rule'][$id]['frag3_engine']['item'])) + $config['installedpackages']['snortglobal']['rule'][$id]['frag3_engine']['item'] = array(); +$a_nat = &$config['installedpackages']['snortglobal']['rule'][$id]['frag3_engine']['item']; + +$pconfig = array(); +if (empty($a_nat[$eng_id])) { + $def = array( "name" => "engine_{$eng_id}", "bind_to" => "", "policy" => "bsd", + "timeout" => 60, "min_ttl" => 1, "detect_anomalies" => "on", + "overlap_limit" => 0, "min_frag_len" => 0 ); + // See if this is initial entry and set to "default" if true + if ($eng_id < 1) { + $def['name'] = "default"; + $def['bind_to'] = "all"; + } + $pconfig = $def; +} +else { + $pconfig = $a_nat[$eng_id]; + + // Check for any empty values and set sensible defaults + if (empty($pconfig['policy'])) + $pconfig['policy'] = "bsd"; + if (empty($pconfig['timeout'])) + $pconfig['timeout'] = 60; + if (empty($pconfig['min_ttl'])) + $pconfig['min_ttl'] = 1; + if (empty($pconfig['detect_anomalies'])) + $pconfig['detect_anomalies'] = "on"; + if (empty($pconfig['overlap_limit'])) + $pconfig['overlap_limit'] = 0; + if (empty($pconfig['min_frag_len'])) + $pconfig['min_frag_len'] = 0; +} + +if ($_POST['Cancel']) { + header("Location: /snort/snort_preprocessors.php?id={$id}#frag3_row"); + exit; +} + +// Check for returned "selected alias" if action is import +if ($_GET['act'] == "import") { + if ($_GET['varname'] == "bind_to" && !empty($_GET['varvalue'])) + $pconfig[$_GET['varname']] = $_GET['varvalue']; +} + +if ($_POST['Submit']) { + + /* Grab all the POST values and save in new temp array */ + $engine = array(); + if ($_POST['frag3_name']) { $engine['name'] = trim($_POST['frag3_name']); } else { $engine['name'] = "default"; } + if ($_POST['frag3_bind_to']) { + if (is_alias($_POST['frag3_bind_to'])) + $engine['bind_to'] = $_POST['frag3_bind_to']; + elseif (strtolower(trim($_POST['frag3_bind_to'])) == "all") + $engine['bind_to'] = "all"; + else + $input_errors[] = gettext("You must provide a valid Alias or the reserved keyword 'all' for the 'Bind-To IP Address' value."); + } + else { + $input_errors[] = gettext("The 'Bind-To IP Address' value cannot be blank. Provide a valid Alias or the reserved keyword 'all'."); + } + + /* Validate the text input fields before saving */ + if (!empty($_POST['frag3_timeout']) || $_POST['frag3_timeout'] == 0) { + $engine['timeout'] = $_POST['frag3_timeout']; + if (!is_numeric($_POST['frag3_timeout']) || $_POST['frag3_timeout'] < 1) + $input_errors[] = gettext("The value for Timeout must be numeric and greater than zero."); + } + else + $engine['timeout'] = 60; + + if (!empty($_POST['frag3_min_ttl']) || $_POST['frag3_min_ttl'] == 0) { + $engine['min_ttl'] = $_POST['frag3_min_ttl']; + if ($_POST['frag3_min_ttl'] < 1 || $_POST['frag3_min_ttl'] > 255) + $input_errors[] = gettext("The value for Minimum_Time-To-Live must be between 1 and 255."); + } + else + $engine['min_ttl'] = 1; + + if (!empty($_POST['frag3_overlap_limit']) || $_POST['frag3_overlap_limit'] == 0) { + $engine['overlap_limit'] = $_POST['frag3_overlap_limit']; + if (!is_numeric($_POST['frag3_overlap_limit']) || $_POST['frag3_overlap_limit'] < 0) + $input_errors[] = gettext("The value for Overlap_Limit must be a number greater than or equal to zero."); + } + else + $engine['overlap_limit'] = 0; + + if (!empty($_POST['frag3_min_frag_len']) || $_POST['frag3_min_frag_len'] == 0) { + $engine['min_frag_len'] = $_POST['frag3_min_frag_len']; + if (!is_numeric($_POST['frag3_min_frag_len']) || $_POST['frag3_min_frag_len'] < 0) + $input_errors[] = gettext("The value for Min_Fragment_Length must be a number greater than or equal to zero."); + } + else + $engine['min_frag_len'] = 0; + + if ($_POST['frag3_policy']) { $engine['policy'] = $_POST['frag3_policy']; } else { $engine['policy'] = "bsd"; } + $engine['detect_anomalies'] = $_POST['frag3_detect_anomalies'] ? 'on' : 'off'; + + /* Can only have one "all" Bind_To address */ + if ($engine['bind_to'] == "all" && $engine['name'] <> "default") { + $input_errors[] = gettext("Only one default Frag3 Engine can be bound to all addresses."); + $pconfig = $engine; + } + + /* if no errors, write new entry to conf */ + if (!$input_errors) { + if (isset($eng_id) && $a_nat[$eng_id]) { + $a_nat[$eng_id] = $engine; + } + else + $a_nat[] = $engine; + + /* Reorder the engine array to ensure the */ + /* 'bind_to=all' entry is at the bottom */ + /* if it contains more than one entry. */ + if (count($a_nat) > 1) { + $i = -1; + foreach ($a_nat as $f => $v) { + if ($v['bind_to'] == "all") { + $i = $f; + break; + } + } + /* Only relocate the entry if we */ + /* found it, and it's not already */ + /* at the end. */ + if ($i > -1 && ($i < (count($a_nat) - 1))) { + $tmp = $a_nat[$i]; + unset($a_nat[$i]); + $a_nat[] = $tmp; + } + } + + /* Now write the new engine array to conf */ + write_config(); + + header("Location: /snort/snort_preprocessors.php?id={$id}#frag3_row"); + exit; + } +} + +$if_friendly = snort_get_friendly_interface($config['installedpackages']['snortglobal']['rule'][$id]['interface']); +$pgtitle = gettext("Snort: Interface {$if_friendly} Frag3 Preprocessor Engine"); +include_once("head.inc"); + +?> + + + + + +
+ + +
+ + + + +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ >  + "default") + echo gettext("Name or description for this engine. (Max 25 characters)"); + else + echo "" . gettext("The name for the 'default' engine is read-only.") . "";?>
+ " . gettext("default") . ""; ?>.
+
+ "default") : ?> + + + + + + + + +
  + "/>
+ " . gettext("Supplied value must be a pre-configured Alias or the keyword 'all'.");?> +      + +   + " . gettext("IP List for the default engine is read-only and must be 'all'.") . "";?>
+
+ +
+   " . gettext("BSD") . ""; ?>.

+
+
+ +

+ " . gettext("60 ") . "" . gettext("seconds."); ?>
+
+ +

+ " . gettext("1") . ""; ?>.
+
onclick="frag3_enable_change();"> + " . gettext("Checked") . ""; ?>.

+ " . + gettext("In order to customize the Overlap Limit and Minimum Fragment Length parameters for this engine, Anomaly Detection must be enabled."); ?> +
+ + 0" . gettext(" (unlimited). Values greater than zero set the overlapped limit."); ?>

+ 0" . gettext(" (unlimited)."); ?>
+
+ + 0" . gettext(" (check is disabled). Values greater than zero enable the check."); ?>

+ 0" . gettext(" (check is disabled)."); ?>
+
  + "> +      + ">
+
+
+
+ + + + + + + -- cgit v1.2.3