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_stream5_engine.php | 670 ++++++++++++++++++++++++++++++++++ 1 file changed, 670 insertions(+) create mode 100644 config/snort/snort_stream5_engine.php (limited to 'config/snort/snort_stream5_engine.php') diff --git a/config/snort/snort_stream5_engine.php b/config/snort/snort_stream5_engine.php new file mode 100644 index 00000000..33fade40 --- /dev/null +++ b/config/snort/snort_stream5_engine.php @@ -0,0 +1,670 @@ +. + * 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; + +/* Retrieve required array index values from QUERY string if available. */ +/* 'id' is the [rule] array index, and 'eng_id' is the index for the */ +/* stream5_tcp_engine's [item] array. */ +$id = $_GET['id']; +$eng_id = $_GET['eng_id']; + +/* See if values are in our form's POST content */ +if (isset($_POST['id'])) + $id = $_POST['id']; +if (isset($_POST['eng_id'])) + $eng_id = $_POST['eng_id']; + +/* If we don't have a [rule] index specified, exit */ +if (is_null($id)) { + // Clear and close out any session variable we created + session_start(); + unset($_SESSION['stream5_client_import']); + session_write_close(); + header("Location: /snort/snort_interfaces.php"); + exit; +} + +/* Initialize pointer into requisite section of [config] array */ +if (!is_array($config['installedpackages']['snortglobal']['rule'])) + $config['installedpackages']['snortglobal']['rule'] = array(); +if (!is_array($config['installedpackages']['snortglobal']['rule'][$id]['stream5_tcp_engine']['item'])) + $config['installedpackages']['snortglobal']['rule'][$id]['stream5_tcp_engine']['item'] = array(); +$a_nat = &$config['installedpackages']['snortglobal']['rule'][$id]['stream5_tcp_engine']['item']; + +$pconfig = array(); + +// If this is a new entry, intialize it with default values +if (empty($a_nat[$eng_id])) { + $def = array( "name" => "engine_{$eng_id}", "bind_to" => "", "policy" => "bsd", "timeout" => 30, + "max_queued_bytes" => 1048576, "detect_anomalies" => "off", "overlap_limit" => 0, + "max_queued_segs" => 2621, "require_3whs" => "off", "startup_3whs_timeout" => 0, + "no_reassemble_async" => "off", "dont_store_lg_pkts" => "off", "max_window" => 0, + "use_static_footprint_sizes" => "off", "check_session_hijacking" => "off", "ports_client" => "default", + "ports_both" => "default", "ports_server" => "none" ); + // 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 empty values and set sensible defaults + if (empty($pconfig['policy'])) + $pconfig['policy'] = "bsd"; + if (empty($pconfig['timeout'])) + $pconfig['timeout'] = 30; + if (empty($pconfig['max_queued_bytes']) && $pconfig['max_queued_bytes'] <> 0) + $pconfig['max_queued_bytes'] = 1048576; + if (empty($pconfig['detect_anomalies'])) + $pconfig['detect_anomalies'] = "off"; + if (empty($pconfig['overlap_limit'])) + $pconfig['overlap_limit'] = 0; + if (empty($pconfig['max_queued_segs']) && $pconfig['max_queued_segs'] <> 0) + $pconfig['max_queued_segs'] = 2621; + if (empty($pconfig['require_3whs'])) + $pconfig['require_3whs'] = "off"; + if (empty($pconfig['startup_3whs_timeout'])) + $pconfig['startup_3whs_timeout'] = 0; + if (empty($pconfig['no_reassemble_async'])) + $pconfig['no_reassemble_async'] = "off"; + if (empty($pconfig['dont_store_lg_pkts'])) + $pconfig['dont_store_lg_pkts'] = "off"; + if (empty($pconfig['max_window'])) + $pconfig['max_window'] = 0; + if (empty($pconfig['use_static_footprint_sizes'])) + $pconfig['use_static_footprint_sizes'] = "off"; + if (empty($pconfig['check_session_hijacking'])) + $pconfig['check_session_hijacking'] = "off"; + if (empty($pconfig['ports_client'])) + $pconfig['ports_client'] = "default"; + if (empty($pconfig['ports_both'])) + $pconfig['ports_both'] = "default"; + if (empty($pconfig['ports_server'])) + $pconfig['ports_server'] = "none"; +} + +if ($_POST['Cancel']) { + // Clear and close out any session variable we created + session_start(); + unset($_SESSION['stream5_client_import']); + session_write_close(); + header("Location: /snort/snort_preprocessors.php?id={$id}#stream5_row"); + exit; +} + +// Check for returned "selected alias" if action is import +if ($_GET['act'] == "import") { + session_start(); + if (($_GET['varname'] == "bind_to" || $_GET['varname'] == "ports_client" || $_GET['varname'] == "ports_both" || $_GET['varname'] == "ports_server") + && !empty($_GET['varvalue'])) { + $pconfig[$_GET['varname']] = $_GET['varvalue']; + if(!isset($_SESSION['stream5_client_import'])) + $_SESSION['stream5_client_import'] = array(); + + $_SESSION['stream5_client_import'][$_GET['varname']] = $_GET['varvalue']; + if (isset($_SESSION['stream5_client_import']['bind_to'])) + $pconfig['bind_to'] = $_SESSION['stream5_client_import']['bind_to']; + if (isset($_SESSION['stream5_client_import']['ports_client'])) + $pconfig['ports_client'] = $_SESSION['stream5_client_import']['ports_client']; + if (isset($_SESSION['stream5_client_import']['ports_both'])) + $pconfig['ports_both'] = $_SESSION['stream5_client_import']['ports_both']; + if (isset($_SESSION['stream5_client_import']['ports_server'])) + $pconfig['ports_server'] = $_SESSION['stream5_client_import']['ports_server']; + } + // If "varvalue" is empty, user likely hit CANCEL in Select Dialog, + // so restore any saved values. + elseif (empty($_GET['varvalue'])) { + if (isset($_SESSION['stream5_client_import']['bind_to'])) + $pconfig['bind_to'] = $_SESSION['stream5_client_import']['bind_to']; + if (isset($_SESSION['stream5_client_import']['ports_client'])) + $pconfig['ports_client'] = $_SESSION['stream5_client_import']['ports_client']; + if (isset($_SESSION['stream5_client_import']['ports_both'])) + $pconfig['ports_both'] = $_SESSION['stream5_client_import']['ports_both']; + if (isset($_SESSION['stream5_client_import']['ports_server'])) + $pconfig['ports_server'] = $_SESSION['stream5_client_import']['ports_server']; + } + else { + unset($_SESSION['stream5_client_import']); + unset($_SESSION['org_referer']); + unset($_SESSION['org_querystr']); + session_write_close(); + } +} + +if ($_POST['Submit']) { + // Clear and close out any session variable we created + session_start(); + unset($_SESSION['org_referer']); + unset($_SESSION['org_querystr']); + unset($_SESSION['stream5_client_import']); + session_write_close(); + + /* Grab all the POST values and save in new temp array */ + $engine = array(); + if ($_POST['stream5_name']) { $engine['name'] = trim($_POST['stream5_name']); } else { $engine['name'] = "default"; } + + /* Validate input values before saving */ + if ($_POST['stream5_bind_to']) { + if (is_alias($_POST['stream5_bind_to'])) { + $engine['bind_to'] = $_POST['stream5_bind_to']; + if (!snort_is_single_addr_alias($_POST['stream5_bind_to'])) + $input_errors[] = gettext("An Alias that evaluates to a single IP address or CIDR network is required for the 'Bind-To IP Address' value."); + } + elseif (strtolower(trim($_POST['stream5_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 { + $input_errors[] = gettext("The 'Bind-To IP Address' value cannot be blank. Provide a valid Alias or the reserved keyword 'all'."); + } + if ($_POST['stream5_ports_client']) { + if (is_alias($_POST['stream5_ports_client'])) + $engine['ports_client'] = $_POST['stream5_ports_client']; + elseif (strtolower(trim($_POST['stream5_ports_client'])) == "default") + $engine['ports_client'] = "default"; + elseif (strtolower(trim($_POST['stream5_ports_client'])) == "all") + $engine['ports_client'] = "all"; + elseif (strtolower(trim($_POST['stream5_ports_client'])) == "none") + $engine['ports_client'] = "none"; + else + $input_errors[] = gettext("You must provide a valid Alias or one of the reserved keywords 'default', 'all' or 'none' for the TCP Target Ports 'ports_client' value."); + } + if ($_POST['stream5_ports_both']) { + if (is_alias($_POST['stream5_ports_both'])) + $engine['ports_both'] = $_POST['stream5_ports_both']; + elseif (strtolower(trim($_POST['stream5_ports_both'])) == "default") + $engine['ports_both'] = "default"; + elseif (strtolower(trim($_POST['stream5_ports_both'])) == "all") + $engine['ports_both'] = "all"; + elseif (strtolower(trim($_POST['stream5_ports_both'])) == "none") + $engine['ports_both'] = "none"; + else + $input_errors[] = gettext("You must provide a valid Alias or one of the reserved keywords 'default', 'all' or 'none' for the TCP Target Ports 'ports_both' value."); + } + if ($_POST['stream5_ports_server']) { + if (is_alias($_POST['stream5_ports_server'])) + $engine['ports_server'] = $_POST['stream5_ports_server']; + elseif (strtolower(trim($_POST['stream5_ports_server'])) == "default") + $engine['ports_server'] = "default"; + elseif (strtolower(trim($_POST['stream5_ports_server'])) == "all") + $engine['ports_server'] = "all"; + elseif (strtolower(trim($_POST['stream5_ports_server'])) == "none") + $engine['ports_server'] = "none"; + else + $input_errors[] = gettext("You must provide a valid Alias or one of the reserved keywords 'default', 'all' or 'none' for the TCP Target Ports 'ports_server' value."); + } + + if (!empty($_POST['stream5_timeout']) || $_POST['stream5_timeout'] == 0) { + $engine['timeout'] = $_POST['stream5_timeout']; + if ($engine['timeout'] < 1 || $engine['timeout'] > 86400) + $input_errors[] = gettext("The value for Timeout must be between 1 and 86400."); + } + else + $engine['timeout'] = 60; + + if (!empty($_POST['stream5_max_queued_bytes']) || $_POST['stream5_max_queued_bytes'] == 0) { + $engine['max_queued_bytes'] = $_POST['stream5_max_queued_bytes']; + if ($engine['max_queued_bytes'] <> 0) { + if ($engine['max_queued_bytes'] < 1024 || $engine['max_queued_bytes'] > 1073741824) + $input_errors[] = gettext("The value for Max_Queued_Bytes must either be 0, or between 1024 and 1073741824."); + } + } + else + $engine['max_queued_bytes'] = 1048576; + + if (!empty($_POST['stream5_max_queued_segs']) || $_POST['stream5_max_queued_segs'] == 0) { + $engine['max_queued_segs'] = $_POST['stream5_max_queued_segs']; + if ($engine['max_queued_segs'] <> 0) { + if ($engine['max_queued_segs'] < 2 || $engine['max_queued_segs'] > 1073741824) + $input_errors[] = gettext("The value for Max_Queued_Segs must either be 0, or between 2 and 1073741824."); + } + } + else + $engine['max_queued_segs'] = 2621; + + if (!empty($_POST['stream5_overlap_limit']) || $_POST['stream5_overlap_limit'] == 0) { + $engine['overlap_limit'] = $_POST['stream5_overlap_limit']; + if ($engine['overlap_limit'] < 0 || $engine['overlap_limit'] > 255) + $input_errors[] = gettext("The value for Overlap_Limit must be between 0 and 255."); + } + else + $engine['overlap_limit'] = 0; + + if (!empty($_POST['stream5_max_window']) || $_POST['stream5_max_window'] == 0) { + $engine['max_window'] = $_POST['stream5_max_window']; + if ($engine['max_window'] < 0 || $engine['max_window'] > 1073725440) + $input_errors[] = gettext("The value for Max_Window must be between 0 and 1073725440."); + } + else + $engine['max_window'] = 0; + + if (!empty($_POST['stream5_3whs_startup_timeout']) || $_POST['stream5_3whs_startup_timeout'] == 0) { + $engine['startup_3whs_timeout'] = $_POST['stream5_3whs_startup_timeout']; + if ($engine['startup_3whs_timeout'] < 0 || $engine['startup_3whs_timeout'] > 86400) + $input_errors[] = gettext("The value for 3whs_Startup_Timeout must be between 0 and 86400."); + } + else + $engine['startup_3whs_timeout'] = 0; + + if ($_POST['stream5_policy']) { $engine['policy'] = $_POST['stream5_policy']; } else { $engine['policy'] = "bsd"; } + if ($_POST['stream5_ports']) { $engine['ports'] = $_POST['stream5_ports']; } else { $engine['ports'] = "both"; } + + $engine['detect_anomalies'] = $_POST['stream5_detect_anomalies'] ? 'on' : 'off'; + $engine['require_3whs'] = $_POST['stream5_require_3whs'] ? 'on' : 'off'; + $engine['no_reassemble_async'] = $_POST['stream5_no_reassemble_async'] ? 'on' : 'off'; + $engine['dont_store_lg_pkts'] = $_POST['stream5_dont_store_lg_pkts'] ? 'on' : 'off'; + $engine['use_static_footprint_sizes'] = $_POST['stream5_use_static_footprint_sizes'] ? 'on' : 'off'; + $engine['check_session_hijacking'] = $_POST['stream5_check_session_hijacking'] ? 'on' : 'off'; + + /* Can only have one "all" Bind_To address */ + if ($engine['bind_to'] == "all" && $engine['name'] <> "default") + $input_errors[] = gettext("Only one default Stream5 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}#stream5_row"); + exit; + } +} + +$if_friendly = snort_get_friendly_interface($config['installedpackages']['snortglobal']['rule'][$id]['interface']); +$pgtitle = gettext("Snort: Interface {$if_friendly} - Stream5 Preprocessor TCP 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("all") . "" . gettext(". Only a single IP address or single network in CIDR form may be specified. ") . + gettext("IP Lists are not allowed.");?>

+ " . 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("default") . ".";?> + "/> +
  + " . gettext("none") . ".";?> + "/> +
  + " . gettext("default") . ".";?> + "/> +
+
+ +

+ " . + gettext("Supplied value must be a pre-configured Alias or the keyword 'default', 'all' or 'none'.");?>
+ " . gettext("Most users should leave these settings at their default values.");?> +
+ + 0" . gettext(" and max is ") . + "1073725440" . gettext(" (65535 left shift 14)"); ?>.

+ 0" . gettext(" (unlimited). This option is intended to prevent a DoS against Stream5 by " . + "attacker using an abnormally large window, so using a value near the maximum is discouraged."); ?>
+
+ + 1" . gettext(" and max is ") . + "86400" . gettext(" (approximately 1 day)"); ?>.

+ 30" . gettext(" seconds."); ?>
+
+ + " . gettext("1024") . "" . gettext(" and Maximum is ") . + "" . gettext("1073741824") . "" . gettext(" (") . + "" . gettext("0") . "" . gettext(" means Maximum)."); ?>

+ + 1048576"); ?>.
+
+ + " . gettext("2") . "" . gettext(" and Maximum is ") . + "" . gettext("1073741824") . "" . gettext(" (") . + "" . gettext("0") . "" . gettext(" means Maximum)");?>.

+ 2621"); ?>.
+
+ + 0" . gettext(" (unlimited) and Maximum is ") . "" . + gettext("255") . ""; ?>.

+ 0" . gettext(" (unlimited)."); ?>
+
> + " . gettext("Not Checked") . ""; ?>.
+
> + " . gettext("Not Checked") . ""; ?>.

+ +
onclick="stream5_3whs_enable_change();"> + " . gettext("Not Checked") . ""; ?>.
+
+ + " . gettext("0") . "" . + gettext(" and Max is ") . "" . gettext("86400") . "" . gettext(" (1 day).");?>

+ " . gettext("0") . + "" . gettext(", (don't consider existing sessions established).");?> +
> + " . gettext("Not Checked") . ""; ?>. +
> + " . gettext("Not Checked") . ""; ?>.
+
+ > + " . gettext("Not Checked") . ""; ?>.

+ " . gettext("Warning: ") . "" . + gettext("Enabling this option could result in missed packets. Recommended setting is not checked."); ?> +
  + "> +      + ">
+
+
+
+ + + + + + + -- cgit v1.2.3