Add new SID MGMT functionality to Snort package.

4 files changed, 1740 insertions, 50 deletions

diff --git a/config/snort/snort.inc b/config/snort/snort.inc
index e442755a..abe2f9ad 100755
--- a/config/snort/snort.inc
+++ b/config/snort/snort.inc
@@ -41,7 +41,7 @@ require_once("pkg-utils.inc");
 require_once("filter.inc");
 
 // Snort GUI needs some extra PHP memory space to manipulate large rules arrays
-ini_set("memory_limit", "192M");
+ini_set("memory_limit", "256M");
 
 // Explicitly declare this as global so it works through function call includes 
 global $rebuild_rules, $pfSense_snort_version;
@@ -82,6 +82,7 @@ define("GPL_FILE_PREFIX", "GPLv2_");
 define("ET_OPEN_FILE_PREFIX", "emerging-");
 define("ET_PRO_FILE_PREFIX", "etpro-");
 define("IPREP_PATH", "/var/db/snort/iprep/");
+define('SID_MODS_PATH', '/var/db/snort/sidmods/');
 
 /* Rebuild Rules Flag -- if "true", rebuild enforcing rules and flowbit-rules files */
 $rebuild_rules = false;
@@ -1157,11 +1158,11 @@ function snort_load_rules_map($rules_path) {
 	if (empty($rules_path))
 		return $map_ref;
 
-	/***************************************************************
+	/************************************************************************************
 	 * Read all the rules into the map array.
 	 * The structure of the map array is:
 	 *
-	 *  map[gid][sid]['rule']['category']['disabled']['action']['flowbits']
+	 *  map[gid][sid]['rule']['category']['action']['disabled']['managed']['flowbits']
 	 *
 	 *  where:
 	 *   gid      = Generator ID from rule, or 1 if general text 
@@ -1169,12 +1170,14 @@ function snort_load_rules_map($rules_path) {
 	 *   sid      = Signature ID from rule
          *   rule     = Complete rule text
 	 *   category = File name of file containing the rule
+	 *   action   = alert, drop, reject or pass
 	 *   disabled = 1 if rule is disabled (commented out), 0 if 
 	 *              rule is enabled
-	 *   action   = alert|log|pass|drop|reject|sdrop 
+	 *    managed = 1 if rule is auto-managed by SID MGMT process,
+	 *              0 if not auto-managed 
 	 *   flowbits = Array of applicable flowbits if rule contains 
 	 *              flowbits options
-	 ***************************************************************/
+	 ************************************************************************************/
 
 	/* First check if we were passed a directory, a single file   */
 	/* or an array of filenames to read. Set our $rule_files      */
@@ -1697,6 +1700,854 @@ function snort_write_enforcing_rules_file($rule_map, $rule_path) {
 	}
 }
 
+function snort_parse_sidconf_file($sidconf_file) {
+
+	/**********************************************/
+	/* This function loads and processes the file */
+	/* specified by '$sidconf_file'.  The file is */
+	/* assumed to contain valid instructions for  */
+	/* matching rule SIDs as supported by the     */
+	/* Oinkmaster and PulledPork utilities.       */
+	/*                                            */
+	/*  $sidconf_file ==> full path and name of   */
+	/*                    file to process         */
+	/*                                            */
+	/*        Returns ==> an array containing     */
+	/*                    SID modifier tokens     */
+	/**********************************************/
+
+	$buf = "";
+	$sid_mods = array();
+
+	$fd = fopen("{$sidconf_file}", "r");
+	if ($fd == FALSE) {
+		log_error("[Snort] Failed to open SID MGMT file '{$sidconf_file}' for processing.");
+		return $sid_mods;
+	}
+
+	// Read and parse the conf file line-by-line
+	while (($buf = fgets($fd)) !== FALSE) {
+		$line = array();
+
+		// Skip any lines that may be just spaces.
+		if (trim($buf, " \r\n") == "")
+			continue;
+
+		// Skip line with leading "#" since it's a comment
+		if (preg_match('/^\s*#/', $buf))
+			continue;
+
+		// Trim off any trailing comment
+		$line = explode("#", $buf);
+
+		// Trim leading and trailing spaces plus newline and any carriage returns
+		$buf = trim($line[0], ' \r\n');
+
+		// Now split the SID mod arguments at the commas, if more than one
+		// per line, and add to our $sid_mods array.
+		$line = explode(",", $buf);
+		foreach ($line as $ent)
+			$sid_mods[] = trim($ent);
+	}
+
+	// Close the file, release unneeded memory and return
+	// the array of SID mod tokens parsed from the file.
+	fclose($fd);
+	unset($line, $buf);
+	return $sid_mods;
+}
+
+function snort_sid_mgmt_auto_categories($snortcfg, $log_results = FALSE) {
+
+	/****************************************************/
+	/* This function parses any auto-SID conf files     */
+	/* configured for the interface and returns an      */
+	/* array of rule categories adjusted from the       */
+	/* ['enabled_rulesets'] element in the config for   */
+	/* the interface in accordance with the contents    */
+	/* of the SID Mgmt conf files.                      */
+	/*                                                  */
+	/* The returned array shows which files should be   */
+	/* removed and which should be added to the list    */
+	/* used when building the enforcing ruleset.        */
+	/*                                                  */
+	/*  $snortcfg ==> pointer to interface              */
+	/*                   configuration info             */
+	/*  $log_results ==> [optional] log results to      */
+	/*                   'sid_changes.log' in the       */
+	/*                   interface directory in         */
+	/*                   /var/log/snort when TRUE       */
+	/*                                                  */
+	/*       Returns ==> array of category file names   */
+	/*                   for the interface.  The keys   */
+	/*                   are category file names and    */
+	/*                   the corresponding values show  */
+	/*                   if the file should be added    */
+	/*                   or removed from the enabled    */
+	/*                   rulesets list.                 */
+	/*                                                  */
+	/*                    Example -                     */
+	/*                      $changes[file] = 'enabled'  */
+	/*                                                  */
+	/****************************************************/
+
+	global $config;
+	$snort_sidmods_dir = SID_MODS_PATH;
+	$sid_mods = array();
+	$enables = array();
+	$disables = array();
+
+	// Check if auto-mgmt of SIDs is enabled, exit if not
+	if ($config['installedpackages']['snortglobal']['auto_manage_sids'] != 'on')
+		return array();
+	if (empty($snortcfg['disable_sid_file']) && empty($snortcfg['enable_sid_file']))
+		return array();
+
+	// Configure the interface's logging subdirectory if log results is enabled
+	if ($log_results == TRUE)
+		$log_file = SNORTLOGDIR . "/snort_" . get_real_interface($snortcfg['interface']) . "{$snortcfg['uuid']}/sid_changes.log";
+	else
+		$log_file = NULL;
+
+	// Get the list of currently enabled categories for the interface
+	if (!empty($snortcfg['rulesets']))
+		$enabled_cats = explode("||", $snortcfg['rulesets']);
+
+	if ($log_results == TRUE) {
+		error_log(gettext("********************************************************\n"), 3, $log_file);
+		error_log(gettext("Starting auto RULE CATEGORY management for " . convert_friendly_interface_to_friendly_descr($snortcfg['interface']) ."\n"), 3, $log_file);
+		error_log(gettext("Start Time: " . date("Y-m-d H:i:s") . "\n"), 3, $log_file);
+	}
+
+	switch ($snortcfg['sid_state_order']) {
+		case "disable_enable":
+			if (!empty($snortcfg['disable_sid_file'])) {
+				if ($log_results == TRUE)
+					error_log(gettext("Processing disable_sid file: {$snortcfg['disable_sid_file']}\n"), 3, $log_file);
+
+				// Attempt to open the 'disable_sid_file' for the interface
+				if (!file_exists("{$snort_sidmods_dir}{$snortcfg['disable_sid_file']}")) {
+					log_error(gettext("[Snort] Error - unable to open 'disable_sid_file' \"{$snortcfg['disable_sid_file']}\" specified for " . convert_friendly_interface_to_friendly_descr($snortcfg['interface'])));
+					if ($log_results == TRUE)
+						error_log(gettext("Unable to open disable_sid file \"{$snortcfg['disable_sid_file']}\".\n"), 3, $log_file);
+				}
+				else
+					$sid_mods = snort_parse_sidconf_file("{$snort_sidmods_dir}{$snortcfg['disable_sid_file']}");
+
+				if (!empty($sid_mods))
+					$disables = snort_get_auto_category_mods($enabled_cats, $sid_mods, "disable", $log_results, $log_file);
+				elseif ($log_results == TRUE && !empty($log_file)) {
+					error_log(gettext("WARNING: no valid SID match tokens found in file \"{$snortcfg['disable_sid_file']}\".\n"), 3, $log_file);
+				}
+			}
+			if (!empty($snortcfg['enable_sid_file'])) {
+				if ($log_results == TRUE)
+					error_log(gettext("Processing enable_sid file: {$snortcfg['enable_sid_file']}\n"), 3, $log_file);
+
+				// Attempt to open the 'enable_sid_file' for the interface
+				if (!file_exists("{$snort_sidmods_dir}{$snortcfg['enable_sid_file']}")) {
+					log_error(gettext("[Snort] Error - unable to open 'enable_sid_file' \"{$snortcfg['enable_sid_file']}\" specified for " . convert_friendly_interface_to_friendly_descr($snortcfg['interface'])));
+					if ($log_results == TRUE)
+						error_log(gettext("Unable to open enable_sid file \"{$snortcfg['enable_sid_file']}\".\n"), 3, $log_file);
+				}
+				else
+					$sid_mods = snort_parse_sidconf_file("{$snort_sidmods_dir}{$snortcfg['enable_sid_file']}");
+
+				if (!empty($sid_mods))
+					$enables = snort_get_auto_category_mods($enabled_cats, $sid_mods, "enable", $log_results, $log_file);
+				elseif ($log_results == TRUE && !empty($log_file)) {
+					error_log(gettext("WARNING: no valid SID match tokens found in file \"{$snortcfg['enable_sid_file']}\".\n"), 3, $log_file);
+				}
+			}
+			break;
+
+		case "enable_disable":
+			if (!empty($snortcfg['enable_sid_file'])) {
+				if ($log_results == TRUE)
+					error_log(gettext("Processing enable_sid file: {$snortcfg['enable_sid_file']}\n"), 3, $log_file);
+
+				// Attempt to open the 'enable_sid_file' for the interface
+				if (!file_exists("{$snort_sidmods_dir}{$snortcfg['enable_sid_file']}")) {
+					log_error(gettext("[Snort] Error - unable to open 'enable_sid_file' \"{$snortcfg['enable_sid_file']}\" specified for " . convert_friendly_interface_to_friendly_descr($snortcfg['interface'])));
+					if ($log_results == TRUE)
+						error_log(gettext("Unable to open enable_sid file \"{$snortcfg['enable_sid_file']}\".\n"), 3, $log_file);
+				}
+				else
+					$sid_mods = snort_parse_sidconf_file("{$snort_sidmods_dir}{$snortcfg['enable_sid_file']}");
+
+				if (!empty($sid_mods))
+					$enables = snort_get_auto_category_mods($enabled_cats, $sid_mods, "enable", $log_results, $log_file);
+				elseif ($log_results == TRUE && !empty($log_file)) {
+					error_log(gettext("WARNING: no valid SID match tokens found in file \"{$snortcfg['enable_sid_file']}\".\n"), 3, $log_file);
+				}
+			}
+			if (!empty($snortcfg['disable_sid_file'])) {
+				if ($log_results == TRUE)
+					error_log(gettext("Processing disable_sid file: {$snortcfg['disable_sid_file']}\n"), 3, $log_file);
+
+				// Attempt to open the 'disable_sid_file' for the interface
+				if (!file_exists("{$snort_sidmods_dir}{$snortcfg['disable_sid_file']}")) {
+					log_error(gettext("[Snort] Error - unable to open 'disable_sid_file' \"{$snortcfg['disable_sid_file']}\" specified for " . convert_friendly_interface_to_friendly_descr($snortcfg['interface'])));
+					if ($log_results == TRUE)
+						error_log(gettext("Unable to open disable_sid file \"{$snortcfg['disable_sid_file']}\".\n"), 3, $log_file);
+				}
+				else
+					$sid_mods = snort_parse_sidconf_file("{$snort_sidmods_dir}{$snortcfg['disable_sid_file']}");
+
+				if (!empty($sid_mods))
+					$disables = snort_get_auto_category_mods($enabled_cats, $sid_mods, "disable", $log_results, $log_file);
+				elseif ($log_results == TRUE && !empty($log_file)) {
+					error_log(gettext("WARNING: no valid SID match tokens found in file \"{$snortcfg['disable_sid_file']}\".\n"), 3, $log_file);
+				}
+			}
+			break;
+
+		default:
+			log_error(gettext("[Snort] Unrecognized 'sid_state_order' value.  Skipping auto CATEGORY mgmt step for " . convert_friendly_interface_to_friendly_descr($snortcfg['interface'])));
+			if ($log_results == TRUE) {
+				error_log(gettext("ERROR: unrecognized 'sid_state_order' value.  Skipping auto CATEGORY mgmt step for ") . convert_friendly_interface_to_friendly_descr($snortcfg['interface']). ".\n", 3, $log_file);
+			}
+	}
+
+	if ($log_results == TRUE) {
+		error_log(gettext("End Time: " . date("Y-m-d H:i:s") . "\n"), 3, $log_file);
+		error_log(gettext("********************************************************\n\n"), 3, $log_file);
+	}
+
+	// Return the required rule category modifications as an array;
+	return array_merge($enables, $disables);
+}
+
+function snort_get_auto_category_mods($categories, $sid_mods, $action, $log_results = FALSE, $log_file = NULL) {
+
+	/****************************************************/
+	/* This function parses the provided SID mod tokens */
+	/* in $sid_mods and returns an array of category    */
+	/* files that must be added ('enabled') or removed  */
+	/* ('disabled') from the provided $categories list  */
+	/* of enabled rule categories as determined by the  */
+	/* content of the SID Mgmt tokens in $sid_mods.     */
+	/*                                                  */
+	/* The returned array shows which files should be   */
+	/* removed and which should be added to the list    */
+	/* used when building the enforcing ruleset.        */
+	/*                                                  */
+	/*   $categories ==> array of currently enabled     */
+	/*                   ruleset categories             */
+	/*     $sid_mods ==> array of SID modification      */
+	/*                   tokens                         */
+	/*       $action ==> modification action for        */
+	/*                   matching category targets:     */
+	/*                   'enable' or 'disable'          */
+	/*  $log_results ==> [optional] 'yes' to log        */
+	/*                   results to $log_file           */
+	/*     $log_file ==> full path and filename of log  */
+	/*                   file to write to               */
+	/*                                                  */
+	/*       Returns ==> array of category file names   */
+	/*                   for the interface.  The keys   */
+	/*                   are category file names and    */
+	/*                   the corresponding values show  */
+	/*                   if the file should be added    */
+	/*                   or removed from the enabled    */
+	/*                   rulesets list.                 */
+	/*                                                  */
+	/*                    Example -                     */
+	/*                      $changes[file] = 'enabled'  */
+	/*                                                  */
+	/****************************************************/
+
+	$snortdir = SNORTDIR;
+	$all_cats = array();
+	$changes = array();
+	$counter = 0;
+	$matchcount = 0;
+
+	// Get a list of all possible categories by loading all rules files
+	foreach (array( VRT_FILE_PREFIX, ET_OPEN_FILE_PREFIX, ET_PRO_FILE_PREFIX, GPL_FILE_PREFIX ) as $prefix) {
+		$files = glob("{$snortdir}/rules/{$prefix}*.rules");
+		foreach ($files as $file)
+			$all_cats[] = basename($file);
+	}
+
+	// Walk the SID mod tokens and decode looking for rule
+	// category enable/disable changes.
+	foreach ($sid_mods as $tok) {
+		$matches = array();
+		// Test the SID token for a GID:SID range and skip if true
+		if (preg_match('/^(\d+):(\d+)-\1:(\d+)/', $tok))
+			continue;
+		// Test the token for a single GID:SID and skip if true
+		elseif (preg_match('/^(\d+):(\d+)$/', $tok))
+			continue;
+		// Test the token for the PCRE: keyword and skip if true
+		elseif (preg_match('/(^pcre\:)(.+)/i', $tok))
+			continue;
+		// Test the token for the MS reference keyword and skip if true
+		elseif (preg_match('/^MS\d+-.+/i', $tok))
+			continue;
+		// Test the token for other keywords delimited with a colon and skip if true
+		elseif (preg_match('/^[a-xA-X]+\:.+/', $tok))
+			continue;
+		// Test the SID token for a rule category name.  Anything that
+		// failed to match above is considered a potential category name.
+		elseif (preg_match('/[a-xA-X]+(-|\w).*/', $tok, $matches)) {
+			$counter++;
+			$regex = "/" . preg_quote(trim($matches[0]), '/') . "/i";
+			// Search through the $all_cats array for any matches to the regex
+			$matches = preg_grep($regex, $all_cats);
+
+			// See if any matches are in the $categories array
+			foreach ($matches as $cat) {
+				switch ($action) {
+					case 'enable':
+						if (!isset($changes[$cat])) {
+							$changes[$cat] = 'enabled';
+							if ($log_results == TRUE && !empty($log_file))
+								error_log(gettext("    Enabled rule category: {$cat}\n"), 3, $log_file);
+							$matchcount++;
+						}
+						break;
+
+					case 'disable':
+						if (!isset($changes[$cat])) {
+							$changes[$cat] = 'disabled';
+							if ($log_results == TRUE && !empty($log_file))
+								error_log(gettext("    Disabled rule category: {$cat}\n"), 3, $log_file);
+							$matchcount++;
+						}
+						break;
+
+					default:
+						break;
+				}
+			}
+		}
+		else {
+			if ($log_results == TRUE && !empty($log_file))
+				error_log(gettext("WARNING: unrecognized token '{$tok}' encountered while processing an automatic SID MGMT file.\n"), 3, $log_file);
+		}
+	}
+
+	if ($log_results == TRUE && !empty($log_file)) {
+		error_log(gettext("    Parsed {$counter} potential Rule Categories to match from the list of tokens.\n"), 3, $log_file);
+		error_log(gettext("    " . ucfirst($action) . "d {$matchcount} matching Rule Categories.\n"), 3, $log_file);
+	}
+
+	// Release memory no longer needed
+	unset($all_cats, $matches);
+
+	// Return array of rule category file changes
+	return $changes;
+}
+
+function snort_modify_sid_state(&$rule_map, $sid_mods, $action, $log_results = FALSE, $log_file = NULL) {
+
+	/**********************************************/
+	/* This function walks the provided array of  */
+	/* SID modification tokens and locates the    */
+	/* target SID or SIDs in the $rule_map array. */
+	/* It then performs the change specified by   */
+	/* $action on the target SID or SIDs.         */
+	/*                                            */
+	/*    $rule_map ==> reference to array of     */
+	/*                  current rules             */
+	/*    $sid_mods ==> array of SID modification */
+	/*                  tokens                    */
+	/*      $action ==> modification action for   */
+	/*                  matching SID targets:     */
+	/*                  'enable' or 'disable'     */
+	/* $log_results ==> [optional] 'yes' to log   */
+	/*                   results to $log_file     */
+	/*    $log_file ==> full path and filename    */
+	/*                  of log file to write to   */
+	/*                                            */
+	/*    On Return ==> $rule_map array modified  */
+	/*                  by changing state for     */
+	/*                  matching SIDs.            */
+	/*                                            */
+	/*                  Returns a two-dimension   */
+	/*                  array of matching GID:SID */
+	/*                  pairs.                    */
+	/**********************************************/
+
+	$sids = array();
+
+	// If no rules in $rule_map or mods in $sid_mods,
+	// then nothing to do.
+	if (empty($rule_map) || empty($sid_mods))
+		return $sids;
+
+	// Validate the action keyword as we only accept
+	// 'enable' and 'disable' as valid.
+	switch ($action) {
+
+		case "enable":
+			break;
+
+		case "disable":
+			break;
+
+		default:
+			log_error(gettext("[Snort] Error - unknown action '{$action}' supplied to snort_modify_sid_state() function...no SIDs modified."));
+			return $sids;
+	}
+
+	// Walk the SID mod tokens and decode each one
+	foreach ($sid_mods as $tok) {
+		$matches = array();
+		// Test the SID token for a GID:SID range
+		if (preg_match('/^(\d+):(\d+)-\1:(\d+)/', $tok, $matches)) {
+			// It was a range, so find all the intervening SIDs
+			$gid = trim($matches[1]);
+			$lsid = trim($matches[2]);
+			$usid = trim($matches[3]);
+			$sids[$gid][$lsid] = $action;
+			while ($lsid < $usid) {
+				$lsid++;
+				$sids[$gid][$lsid] = $action;
+			}
+		}
+		// Test the SID token for a single GID:SID
+		elseif (preg_match('/^(\d+):(\d+)$/', $tok, $matches)) {
+			// It's a single GID:SID, so grab it
+			$sids[$matches[1]][$matches[2]] = $action;
+		}
+		// Test the SID token for the PCRE: keyword
+		elseif (preg_match('/(^pcre\:)(.+)/i', $tok, $matches)) {
+			$regex = '/' . preg_quote($matches[2], '/') . '/i';
+
+			// Now search through the $rule_map in the 'rule'
+			// element for any matches to the regex and get
+			// the GID:SID.
+			foreach ($rule_map as $k1 => $rulem) {
+				foreach ($rulem as $k2 => $v) {
+					if (preg_match($regex, $v['rule'])) {
+						$sids[$k1][$k2] = $action;
+					}
+				}
+			}
+		}
+		// Test the SID token for the MS reference keyword
+		elseif (preg_match('/^MS\d+-.+/i', $tok, $matches)) {
+			$regex = "/" . preg_quote($matches[0], '/') . "/i";
+
+			// Now search through the $rule_map in the 'rule'
+			// element for any matches to the regex and get
+			// the GID:SID.
+			foreach ($rule_map as $k1 => $rulem) {
+				foreach ($rulem as $k2 => $v) {
+					if (preg_match($regex, $v['rule'])) {
+						$sids[$k1][$k2] = $action;
+					}
+				}
+			}
+		}
+		// Test the SID token for other keywords delimited with a colon
+		elseif (preg_match('/^[a-xA-X]+\:.+/', $tok, $matches)) {
+			$regex = "/" . str_replace(':', ",", preg_quote($matches[0], '/')) . "/i";
+
+			// Now search through the $rule_map in the 'rule'
+			// element for any matches to the regex and get
+			// the GID:SID.
+			foreach ($rule_map as $k1 => $rulem) {
+				foreach ($rulem as $k2 => $v) {
+					if (preg_match($regex, $v['rule'])) {
+						$sids[$k1][$k2] = $action;
+					}
+				}
+			}
+		}
+		// Test the SID token for a rule category name.  Anything that
+		// failed to match above is considered a potential category name.
+		elseif (preg_match('/[a-xA-X]+(-|\w).*/', $tok, $matches)) {
+			$regex = "/" . preg_quote(trim($matches[0]), '/') . "/i";
+			// Now search through the $rule_map in the 'category'
+			// element for any matches to the regex and get
+			// the GID:SID.
+			foreach ($rule_map as $k1 => $rulem) {
+				foreach ($rulem as $k2 => $v) {
+					if (preg_match($regex, $v['category'] . ".rules")) {
+						$sids[$k1][$k2] = $action;
+					}
+				}
+			}
+		}
+		else {
+			if ($log_results == TRUE && !empty($log_file))
+				error_log(gettext("WARNING: unrecognized token '{$tok}' encountered while processing an automatic SID MGMT file.\n"), 3, $log_file);
+		}
+	}
+
+	// Change state of all the matching GID:SID pairs we found
+	// above in the $rule_map array passed to us.
+	$modcount = $changecount = 0;
+	$counter = count($sids, COUNT_RECURSIVE) - count($sids);
+
+	if ($log_results == TRUE && !empty($log_file))
+		error_log(gettext("    Parsed {$counter} potential SIDs to match from the provided list of tokens.\n"), 3, $log_file);
+
+	foreach (array_keys($sids) as $k1) {
+		foreach (array_keys($sids[$k1]) as $k2) {
+			if (isset($rule_map[$k1][$k2])) {
+				if ($action == 'enable' && $rule_map[$k1][$k2]['disabled'] == 1) {
+					$rule_map[$k1][$k2]['rule'] = ltrim($rule_map[$k1][$k2]['rule'], " \t#");
+					$rule_map[$k1][$k2]['disabled'] = 0;
+					$rule_map[$k1][$k2]['managed'] = 1;
+					$changecount++;
+					$modcount++;
+				}
+				elseif ($action == 'disable' && $rule_map[$k1][$k2]['disabled'] == 0) {
+					$rule_map[$k1][$k2]['rule'] = "# " . $rule_map[$k1][$k2]['rule'];
+					$rule_map[$k1][$k2]['disabled'] = 1;
+					$rule_map[$k1][$k2]['managed'] = 1;
+					$changecount++;
+					$modcount++;
+				}
+			}
+		}
+	}
+
+	if ($log_results == TRUE && !empty($log_file)) {
+		error_log(gettext("    Found {$modcount} matching SIDs in the active rules.\n"), 3, $log_file);
+		error_log(gettext("    Changed state for {$changecount} SIDs to '{$action}d'.\n"), 3, $log_file);
+	}
+
+	// Return the array of matching SIDs
+	return $sids;
+}
+
+function snort_modify_sid_content(&$rule_map, $sid_mods, $log_results = FALSE, $log_file = NULL) {
+
+	/************************************************/
+	/* This function walks the provided array of    */
+	/* SID modification tokens and locates the      */
+	/* target SID or SIDs in the $rule_map array.   */
+	/* It then modifies the content of the target   */
+	/* SID or SIDs. Modifications are only valid    */
+	/* for normal GID=1 text rules.                 */
+	/*                                              */
+	/*     $rule_map ==> reference to array of      */
+	/*                   current rules              */
+	/*     $sid_mods ==> array of SID modification  */
+	/*                   tokens                     */
+	/*  $log_results ==> [optional] 'yes' to log    */
+	/*                   results to $log_file       */
+	/*     $log_file ==> full path and filename     */
+	/*                   of log file to write to    */
+	/*                                              */
+	/*     On Return ==> $rule_map array modified   */
+	/*                   by changing content for    */
+	/*                   matching SIDs.             */
+	/*                                              */
+	/*                   Returns a two-dimension    */
+	/*                   array of matching          */
+	/*                   GID:SID pairs.             */
+	/************************************************/
+
+	$sids = array();
+	$tokencounter = $modcount = $modifiedcount = 0;
+
+	// If no rules in $rule_map or mods in $sid_mods,
+	// then nothing to do.
+	if (empty($rule_map) || empty($sid_mods))
+		return $sids;
+
+	// Walk the SID mod tokens and decode each one
+	foreach ($sid_mods as $tok) {
+		$matches = array();
+		if (preg_match('/([\d+|,|\*]*)\s+"(.+)"\s+"(.*)"/', $tok, $matches)) {
+			$tokencounter++;
+			$sidlist = explode(",", $matches[1]);
+			$from = '/' . preg_quote($matches[2], '/') . '/';
+			$to = $matches[3];
+			$count = 0;
+
+			// Now walk the provided rule map and make the modifications
+			if ($matches[1] == "*") {
+				// If wildcard '*' provided for SID, then check them all
+				foreach ($rule_map[1] as $rulem) {
+					foreach ($rulem as $k2 => $v) {
+						$modcount++;
+						$rule_map[1][$k2]['rule'] = preg_replace($from, $to, $v['rule'], -1, $count);
+						if ($count > 0) {
+							$rule_map[1][$k2]['managed'] = 1;
+							$sids[1][$k2] = 'modify';
+							$modifiedcount++;
+						}
+					}
+				}
+			}
+			else {
+				// Otherwise just check the provided SIDs
+				foreach ($sidlist as $sid) {
+					if (isset($rule_map[1][$sid])) {
+						$modcount++;
+						$rule_map[1][$sid]['rule'] = preg_replace($from, $to, $rule_map[1][$sid]['rule'], -1, $count);
+						if ($count > 0) {
+							$rule_map[1][$sid]['managed'] = 1;
+							$sids[1][$sid] = 'modify';
+							$modifiedcount++;
+						}
+					}
+				}
+			}
+		}
+		else {
+			if ($log_results == TRUE && !empty($log_file))
+				error_log(gettext("WARNING: unrecognized token '{$tok}' encountered while processing an automatic SID MGMT file.\n"), 3, $log_file);
+		}
+	}
+
+	if ($log_results == TRUE && !empty($log_file)) {
+		error_log(gettext("    Parsed {$tokencounter} potential SIDs to match from the provided list of tokens.\n"), 3, $log_file);
+		error_log(gettext("    Found {$modcount} matching SIDs in the active rules.\n"), 3, $log_file);
+		error_log(gettext("    Modified rule text for {$modifiedcount} SIDs.\n"), 3, $log_file);
+	}
+
+	// Return the array of matching SIDs
+	return $sids;
+}
+
+function snort_process_enablesid(&$rule_map, $snortcfg, $log_results = FALSE, $log_file = NULL) {
+
+	/**********************************************/
+	/* This function loads and processes the file */
+	/* specified by 'enable_sid_file' for the     */
+	/* interface.  The file is assumed to be a    */
+	/* valid enablesid.conf file containing       */
+	/* instructions for enabling matching rule    */
+	/* SIDs.                                      */
+	/*                                            */
+	/*     $rule_map ==> reference to array of    */
+	/*                   current rules            */
+	/*  $snortcfg ==> interface config params     */
+	/*  $log_results ==> [optional] 'yes' to log  */
+	/*                   results to $log_file     */
+	/*     $log_file ==> full path and filename   */
+	/*                   of log file to write to  */
+	/*                                            */
+	/*     On Return ==> suitably modified        */
+	/*                   $rule_map array          */
+	/**********************************************/
+
+	$snort_sidmods_dir = SID_MODS_PATH;
+	$snortlogdir = SNORTLOGDIR;
+	$sid_mods = array();
+
+	// If no rules in $rule_map, then nothing to do
+	if (empty($rule_map))
+		return;
+
+	// Attempt to open the 'enable_sid_file' for the interface
+	if (!file_exists("{$snort_sidmods_dir}{$snortcfg['enable_sid_file']}")) {
+		log_error(gettext("[Snort] Error - unable to open 'enable_sid_file' \"{$snortcfg['enable_sid_file']}\" specified for " . convert_friendly_interface_to_friendly_descr($snortcfg['interface'])));
+		return;
+	}
+	else
+		$sid_mods = snort_parse_sidconf_file("{$snort_sidmods_dir}{$snortcfg['enable_sid_file']}");
+
+	if (!empty($sid_mods))
+		snort_modify_sid_state($rule_map, $sid_mods, "enable", $log_results, $log_file);
+	elseif ($log_results == TRUE && !empty($log_file)) {
+		error_log(gettext("WARNING: no valid SID match tokens found in file \"{$snortcfg['enable_sid_file']}\".\n"), 3, $log_file);
+	}
+
+	unset($sid_mods);
+}
+
+function snort_process_disablesid(&$rule_map, $snortcfg, $log_results = FALSE, $log_file = NULL) {
+
+	/**********************************************/
+	/* This function loads and processes the file */
+	/* specified by 'disable_sid_file' for the    */
+	/* interface.  The file is assumed to be a    */
+	/* valid disablesid.conf file containing      */
+	/* instructions for disabling matching rule   */
+	/* SIDs.                                      */
+	/*                                            */
+	/*     $rule_map ==> reference to array of    */
+	/*                   current rules            */
+	/*  $snortcfg ==> interface config params     */
+	/*  $log_results ==> [optional] 'yes' to log  */
+	/*                   results to $log_file     */
+	/*     $log_file ==> full path and filename   */
+	/*                   of log file to write to  */
+	/*                                            */
+	/*     On Return ==> suitably modified        */
+	/*                   $rule_map array          */
+	/**********************************************/
+
+	$snort_sidmods_dir = SID_MODS_PATH;
+	$snortlogdir = SNORTLOGDIR;
+	$sid_mods = array();
+
+	// If no rules in $rule_map, then nothing to do
+	if (empty($rule_map))
+		return;
+
+	// Attempt to open the 'disable_sid_file' for the interface
+	if (!file_exists("{$snort_sidmods_dir}{$snortcfg['disable_sid_file']}")) {
+		log_error(gettext("[Snort] Error - unable to open 'disable_sid_file' \"{$snortcfg['disable_sid_file']}\" specified for " . convert_friendly_interface_to_friendly_descr($snortcfg['interface'])));
+		return;
+	}
+	else
+		$sid_mods = snort_parse_sidconf_file("{$snort_sidmods_dir}{$snortcfg['disable_sid_file']}");
+
+	if (!empty($sid_mods))
+		snort_modify_sid_state($rule_map, $sid_mods, "disable", $log_results, $log_file);
+	elseif ($log_results == TRUE && !empty($log_file)) {
+		error_log(gettext("WARNING: no valid SID match tokens found in file \"{$snortcfg['disable_sid_file']}\".\n"), 3, $log_file);
+	}
+
+	unset($sid_mods);
+}
+
+function snort_process_modifysid(&$rule_map, $snortcfg, $log_results = FALSE, $log_file = NULL) {
+
+	/**********************************************/
+	/* This function loads and processes the file */
+	/* specified by 'modify_sid_file' for the     */
+	/* interface.  The file is assumed to be a    */
+	/* valid modifysid.conf file containing       */
+	/* instructions for modifying matching rule   */
+	/* SIDs.                                      */
+	/*                                            */
+	/*     $rule_map ==> reference to array of    */
+	/*                   current rules            */
+	/*  $snortcfg ==> interface config params     */
+	/*  $log_results ==> [optional] 'yes' to log  */
+	/*                   results to $log_file     */
+	/*     $log_file ==> full path and filename   */
+	/*                   of log file to write to  */
+	/*                                            */
+	/*     On Return ==> suitably modified        */
+	/*                   $rule_map array          */
+	/**********************************************/
+
+	$snort_sidmods_dir = SID_MODS_PATH;
+	$snortlogdir = SNORTLOGDIR;
+	$sid_mods = array();
+
+	// If no rules in $rule_map, then nothing to do
+	if (empty($rule_map))
+		return;
+
+	// Attempt to open the 'modify_sid_file' for the interface
+	if (!file_exists("{$snort_sidmods_dir}{$snortcfg['modify_sid_file']}")) {
+		log_error(gettext("[Snort] Error - unable to open 'modify_sid_file' \"{$snortcfg['modify_sid_file']}\" specified for " . convert_friendly_interface_to_friendly_descr($snortcfg['interface'])));
+		return;
+	}
+	else
+		$sid_mods = snort_parse_sidconf_file("{$snort_sidmods_dir}{$snortcfg['modify_sid_file']}");
+
+	if (!empty($sid_mods))
+		snort_modify_sid_content($rule_map, $sid_mods, $log_results, $log_file);
+	elseif ($log_results == TRUE && !empty($log_file)) {
+		error_log(gettext("WARNING: no valid SID match tokens found in file \"{$snortcfg['modify_sid_file']}\".\n"), 3, $log_file);
+	}
+
+	unset($sid_mods);
+}
+
+function snort_auto_sid_mgmt(&$rule_map, $snortcfg, $log_results = FALSE) {
+
+	/**************************************************/
+	/* This function modifies the rules in the        */
+	/* passed rule_map array based on values in the   */
+	/* files 'enable_sid_file', 'disable_sid_file'    */
+	/* and 'modify_sid_file' for the interface.       */
+	/*                                                */
+	/* If auto-mgmt of SIDs is enabled via the        */
+	/* settings on the UPDATE RULES tab, then the     */
+	/* rules are processed against these settings.    */
+	/*                                                */
+	/*     $rule_map ==> array of current rules       */
+	/*  $snortcfg ==> interface config settings       */
+	/*  $log_results ==> [optional] log results to    */
+	/*                   'sid_changes.log' in the     */
+	/*                   interface directory in       */
+	/*                   /var/log/snort when TRUE     */
+	/*                                                */
+	/*       Returns ==> TRUE if rules were changed;  */
+	/*                   otherwise FALSE              */
+	/**************************************************/
+
+	global $config;
+	$result = FALSE;
+
+	// Configure the interface's logging subdirectory if log results is enabled
+	if ($log_results == TRUE)
+		$log_file = SNORTLOGDIR . "/snort_" . get_real_interface($snortcfg['interface']) . "{$snortcfg['uuid']}/sid_changes.log";
+	else
+		$log_file = NULL;
+
+	// Check if auto-mgmt of SIDs is enabled and files are specified
+	// for the interface.
+	if ($config['installedpackages']['snortglobal']['auto_manage_sids'] == 'on' &&
+	    (!empty($snortcfg['disable_sid_file']) || !empty($snortcfg['enable_sid_file']) || 
+	    !empty($snortcfg['modify_sid_file']))) {
+		if ($log_results == TRUE) {
+			error_log(gettext("********************************************************\n"), 3, $log_file);
+			error_log(gettext("Starting auto SID management for " . convert_friendly_interface_to_friendly_descr($snortcfg['interface']) ."\n"), 3, $log_file);
+			error_log(gettext("Start Time: " . date("Y-m-d H:i:s") . "\n"), 3, $log_file);
+		}
+
+		switch ($snortcfg['sid_state_order']) {
+			case "disable_enable":
+				if (!empty($snortcfg['disable_sid_file'])) {
+					if ($log_results == TRUE)
+						error_log(gettext("Processing disable_sid file: {$snortcfg['disable_sid_file']}\n"), 3, $log_file);
+					snort_process_disablesid($rule_map, $snortcfg, $log_results, $log_file);
+				}
+				if (!empty($snortcfg['enable_sid_file'])) {
+					if ($log_results == TRUE)
+						error_log(gettext("Processing enable_sid file: {$snortcfg['enable_sid_file']}\n"), 3, $log_file);
+					snort_process_enablesid($rule_map, $snortcfg, $log_results, $log_file);
+				}
+				if (!empty($snortcfg['modify_sid_file'])) {
+					if ($log_results == TRUE)
+						error_log(gettext("Processing modify_sid file: {$snortcfg['modify_sid_file']}\n"), 3, $log_file);
+					snort_process_modifysid($rule_map, $snortcfg, $log_results, $log_file);
+				}
+				$result = TRUE;
+				break;
+
+			case "enable_disable":
+				if (!empty($snortcfg['enable_sid_file'])) {
+					if ($log_results == TRUE)
+						error_log(gettext("Processing enable_sid file: {$snortcfg['enable_sid_file']}\n"), 3, $log_file);
+					snort_process_enablesid($rule_map, $snortcfg, $log_results, $log_file);
+				}
+				if (!empty($snortcfg['disable_sid_file'])) {
+					if ($log_results == TRUE)
+						error_log(gettext("Processing disable_sid file: {$snortcfg['disable_sid_file']}\n"), 3, $log_file);
+					snort_process_disablesid($rule_map, $snortcfg, $log_results, $log_file);
+				}
+				if (!empty($snortcfg['modify_sid_file'])) {
+					if ($log_results == TRUE)
+						error_log(gettext("Processing modify_sid file: {$snortcfg['modify_sid_file']}\n"), 3, $log_file);
+					snort_process_modifysid($rule_map, $snortcfg, $log_results, $log_file);
+				}
+				$result = TRUE;
+				break;
+
+			default:
+				log_error(gettext("[Snort] Unrecognized 'sid_state_order' value.  Skipping auto SID mgmt step for " . convert_friendly_interface_to_friendly_descr($snortcfg['interface'])));
+				if ($log_results == TRUE) {
+					error_log(gettext("ERROR: unrecognized 'sid_state_order' value.  Skipping auto SID mgmt step for ") . convert_friendly_interface_to_friendly_descr($snortcfg['interface']). ".\n", 3, $log_file);
+				}
+				$result = FALSE;
+		}
+
+		if ($log_results == TRUE) {
+			error_log(gettext("End Time: " . date("Y-m-d H:i:s") . "\n"), 3, $log_file);
+			error_log(gettext("********************************************************\n\n"), 3, $log_file);
+		}
+	}
+	return $result;
+}
+
 function snort_load_sid_mods($sids) {
 
 	/*****************************************/
@@ -2226,6 +3077,9 @@ function snort_prepare_rule_files($snortcfg, $snortcfgdir) {
 	$snortdir = SNORTDIR;
 	$flowbit_rules_file = FLOWBITS_FILENAME;
 	$snort_enforcing_rules_file = ENFORCING_RULES_FILENAME;
+	$enabled_files = array();
+	$all_rules = array();
+	$cat_mods = array();
 	$no_rules_defined = true;
 	$enabled_rules = array();
 
@@ -2236,6 +3090,10 @@ function snort_prepare_rule_files($snortcfg, $snortcfgdir) {
 	/* Log a message for rules rebuild in progress */
 	log_error(gettext("[Snort] Updating rules configuration for: " . convert_friendly_interface_to_friendly_descr($snortcfg['interface']) . " ..."));
 
+	// Get any automatic rule category enable/disable modifications
+	// if auto-SID Mgmt is enabled and conf files exist for the interface.
+	$cat_mods = snort_sid_mgmt_auto_categories($snortcfg, TRUE);
+
 	/* Enable all, some or none of the SDF rules depending on setting. */
 	if ($snortcfg['sensitive_data'] == 'on' && $snortcfg['protect_preproc_rules'] != 'on') {
 		if (file_exists(SNORTDIR."/preproc_rules/sensitive-data.rules")) {
@@ -2262,8 +3120,6 @@ function snort_prepare_rule_files($snortcfg, $snortcfgdir) {
 
 	/* Only rebuild rules if some are selected or an IPS Policy is enabled  */
 	if (!empty($snortcfg['rulesets']) || $snortcfg['ips_policy_enable'] == 'on') {
-		$enabled_files = array();
-		$all_rules = array();
 		$no_rules_defined = false;
 
 		/* Load up all the text rules into a Rules Map array. */
@@ -2279,6 +3135,28 @@ function snort_prepare_rule_files($snortcfg, $snortcfgdir) {
 					$enabled_files[$category] = $file;
 			}
 
+			// Now adjust the list using any required changes as
+			// determined by auto-SID Mgmt policy files.
+			if (!empty($cat_mods)) {
+				foreach ($cat_mods as $k => $action) {
+					$key = basename($k, ".rules");
+					switch ($action) {
+						case 'enabled':
+							if (!isset($enabled_files[$key]))
+								$enabled_files[$key] = $k;
+							break;
+
+						case 'disabled':
+							if (isset($enabled_files[$key]))
+								unset($enabled_files[$key]);
+							break;
+
+						default:
+							break;
+					}
+				}
+			}
+
 			/****************************************************/
 			/* Walk the ALL_RULES map array and copy the rules  */
 			/* matching our selected file categories to the     */
@@ -2301,7 +3179,7 @@ function snort_prepare_rule_files($snortcfg, $snortcfgdir) {
 			}
 
 			/* Release memory we no longer need. */
-			unset($enabled_files, $rulem, $v);
+			unset($enabled_files, $cat_mods, $rulem, $v);
 		}
 
 		/* Check if a pre-defined Snort VRT policy is selected. If so, */
@@ -2324,7 +3202,9 @@ function snort_prepare_rule_files($snortcfg, $snortcfgdir) {
 			unset($policy_rules, $policy, $p);
 		}
 
-		/* Process any enablesid or disablesid modifications for the selected rules. */
+		// Process any enablesid or disablesid modifications for the selected rules.
+		// Do the auto-SID managment first, if enabled, then do any manual SID state changes.
+		snort_auto_sid_mgmt($enabled_rules, $snortcfg, TRUE);
 		snort_modify_sids($enabled_rules, $snortcfg);
 
 		/* Check for and disable any rules dependent upon disabled preprocessors if  */
@@ -2357,7 +3237,45 @@ function snort_prepare_rule_files($snortcfg, $snortcfgdir) {
 		} else
 			/* Just put an empty file to always have the file present */
 			snort_write_flowbit_rules_file(array(), "{$snortcfgdir}/rules/{$flowbit_rules_file}");
-	} else {
+		unset($all_rules);
+	}
+	// If no rule categories were enabled, then use auto-SID management if enabled, since it may enable some rules
+	elseif ($config['installedpackages']['snortglobal']['auto_manage_sids'] == 'on' &&
+		(!empty($snortcfg['disable_sid_file']) || !empty($snortcfg['enable_sid_file']) || 
+		!empty($snortcfg['modify_sid_file']))) {
+
+		snort_auto_sid_mgmt($enabled_rules, $snortcfg, TRUE);
+		if (!empty($enabled_rules)) {
+			// Auto-SID management generated some rules, so use them
+			$no_rules_defined = false;
+			snort_modify_sids($enabled_rules, $snortcfg);
+
+			// Write the enforcing rules file to the Suricata interface's "rules" directory.
+			snort_write_enforcing_rules_file($enabled_rules, "{$snortcfgdir}/rules/{$snort_enforcing_rules_file}");
+
+			// If auto-flowbit resolution is enabled, generate the dependent flowbits rules file.
+			if ($snortcfg['autoflowbitrules'] == 'on') {
+				log_error('[Suricata] Enabling any flowbit-required rules for: ' . convert_friendly_interface_to_friendly_descr($snortcfg['interface']) . '...');
+
+				// Load up all rules into a Rules Map array for flowbits assessment
+				$all_rules = snort_load_rules_map("{$snortdir}/rules/");
+				$fbits = snort_resolve_flowbits($all_rules, $enabled_rules);
+
+				// Check for and disable any flowbit-required rules the
+				// user has manually forced to a disabled state.
+				snort_modify_sids($fbits, $snortcfg);
+				snort_write_flowbit_rules_file($fbits, "{$snortcfgdir}/rules/{$flowbit_rules_file}");
+				unset($all_rules, $fbits);
+			} else
+				// Just put an empty file to always have the file present
+			snort_write_flowbit_rules_file(array(), "{$snortcfgdir}/rules/{$flowbit_rules_file}");
+		}
+		else {
+			snort_write_enforcing_rules_file(array(), "{$snortcfgdir}/rules/{$snort_enforcing_rules_file}");
+			snort_write_flowbit_rules_file(array(), "{$snortcfgdir}/rules/{$flowbit_rules_file}");
+		}
+	}
+	else {
 		/* No regular rules or policy were selected, so just use the decoder and preproc rules */
 		snort_write_enforcing_rules_file($enabled_rules, "{$snortcfgdir}/rules/{$snort_enforcing_rules_file}");
 		snort_write_flowbit_rules_file(array(), "{$snortcfgdir}/rules/{$flowbit_rules_file}");
diff --git a/config/snort/snort_rules.php b/config/snort/snort_rules.php
index 8d9aa6ba..013b7d84 100755
--- a/config/snort/snort_rules.php
+++ b/config/snort/snort_rules.php
@@ -109,6 +109,29 @@ $categories[] = "custom.rules";
 $categories[] = "decoder.rules";
 $categories[] = "preprocessor.rules";
 $categories[] = "sensitive-data.rules";
+
+// Get any automatic rule category enable/disable modifications
+// if auto-SID Mgmt is enabled, and adjust the available rulesets
+// in the CATEGORY drop-down box as necessary.
+$cat_mods = snort_sid_mgmt_auto_categories($a_rule[$id], FALSE);
+foreach ($cat_mods as $k => $v) {
+	switch ($v) {
+		case 'disabled':
+			if (($key = array_search($k, $categories)) !== FALSE)
+				unset($categories[$key]);
+			break;
+
+		case 'enabled':
+			if (!in_array($k, $categories))
+				$categories[] = $k;
+			break;
+
+		default:
+			break;
+	}
+}
+
+// Add any enabled IPS-Policy and Auto-Flowbits File
 if (!empty($a_rule[$id]['ips_policy']))
 	$categories[] = "IPS Policy - " . ucfirst($a_rule[$id]['ips_policy']);
 if ($a_rule[$id]['autoflowbitrules'] == 'on')
@@ -146,6 +169,9 @@ if ($currentruleset != 'custom.rules') {
 		$input_errors[] = gettext("{$currentruleset} seems to be missing!!! Please verify rules files have been downloaded, then go to the Categories tab and save the rule set again.");
 }
 
+/* Process the current category rules through any auto SID MGMT changes if enabled */
+snort_auto_sid_mgmt($rules_map, $a_rule[$id], FALSE);
+
 /* Load up our enablesid and disablesid arrays with enabled or disabled SIDs */
 $enablesid = snort_load_sid_mods($a_rule[$id]['rule_sid_on']);
 $disablesid = snort_load_sid_mods($a_rule[$id]['rule_sid_off']);
@@ -356,6 +382,9 @@ elseif ($_POST['clear']) {
 	conf_mount_ro();
 	$rebuild_rules = false;
 	$pconfig['customrules'] = '';
+
+	// Sync to configured CARP slaves if any are enabled
+	snort_sync_on_changes();
 }
 elseif ($_POST['save']) {
 	$pconfig['customrules'] = $_POST['customrules'];
@@ -388,6 +417,9 @@ elseif ($_POST['save']) {
 	}
 
 	clear_subsystem_dirty('snort_rules');
+
+	// Sync to configured CARP slaves if any are enabled
+	snort_sync_on_changes();
 }
 else if ($_POST['apply']) {
 	/* Save new configuration */
@@ -408,6 +440,9 @@ else if ($_POST['apply']) {
 
 	// We have saved changes and done a soft restart, so clear "dirty" flag
 	clear_subsystem_dirty('snort_rules');
+
+	// Sync to configured CARP slaves if any are enabled
+	snort_sync_on_changes();
 }
 
 include_once("head.inc");
@@ -453,7 +488,8 @@ if ($savemsg) {
 		$tab_array[5] = array(gettext("Pass Lists"), false, "/snort/snort_passlist.php");
 		$tab_array[6] = array(gettext("Suppress"), false, "/snort/snort_interfaces_suppress.php");
 		$tab_array[7] = array(gettext("IP Lists"), false, "/snort/snort_ip_list_mgmt.php");
-		$tab_array[8] = array(gettext("Sync"), false, "/pkg_edit.php?xml=snort/snort_sync.xml");
+		$tab_array[8] = array(gettext("SID Mgmt"), false, "/snort/snort_sid_mgmt.php");
+		$tab_array[9] = array(gettext("Sync"), false, "/pkg_edit.php?xml=snort/snort_sync.xml");
 		display_top_tabs($tab_array,true);
 		echo '</td></tr>';
 		echo '<tr><td class="tabnavtbl">';
@@ -614,17 +650,35 @@ if ($savemsg) {
 						</thead>
 						<tbody>
 					<?php
-						$counter = $enable_cnt = $disable_cnt = 0;
+						$counter = $enable_cnt = $disable_cnt = $user_enable_cnt = $user_disable_cnt = $managed_count = 0;
 						foreach ($rules_map as $k1 => $rulem) {
 							foreach ($rulem as $k2 => $v) {
 								$sid = $k2;
 								$gid = $k1;
-
-								if (isset($disablesid[$gid][$sid])) {
+								$ruleset = $currentruleset;
+								$style = "";
+
+								if ($v['managed'] == 1) {
+									if ($v['disabled'] == 1) {
+										$textss = "<span class=\"gray\">";
+										$textse = "</span>";
+										$style= "style=\"opacity: 0.4; filter: alpha(opacity=40);\"";
+										$title = gettext("Auto-disabled by settings on SID Mgmt tab");
+									}
+									else {
+										$textss = $textse = "";
+										$ruleset = "suricata.rules";
+										$title = gettext("Auto-managed by settings on SID Mgmt tab");
+									}
+									$iconb = "icon_advanced.gif";
+									$managed_count++;
+								}
+								elseif (isset($disablesid[$gid][$sid])) {
 									$textss = "<span class=\"gray\">";
 									$textse = "</span>";
 									$iconb = "icon_reject_d.gif";
 									$disable_cnt++;
+									$user_disable_cnt++;
 									$title = gettext("Disabled by user. Click to toggle to enabled state");
 								}
 								elseif (($v['disabled'] == 1) && (!isset($enablesid[$gid][$sid]))) {
@@ -638,6 +692,7 @@ if ($savemsg) {
 									$textss = $textse = "";
 									$iconb = "icon_reject.gif";
 									$enable_cnt++;
+									$user_enable_cnt++;
 									$title = gettext("Enabled by user. Click to toggle to disabled state");
 								}
 								else {
@@ -668,12 +723,18 @@ if ($savemsg) {
 								$message = snort_get_msg($v['rule']); // description field
 								$sid_tooltip = gettext("View the raw text for this rule");
 
-								echo "<tr><td class=\"listt\" align=\"left\" valign=\"middle\">{$textss}
-								<a id=\"rule_{$gid}_{$sid}\" href=''><input type=\"image\" onClick=\"document.getElementById('sid').value='{$sid}';
-								document.getElementById('gid').value='{$gid}';\" 
-								src=\"../themes/{$g['theme']}/images/icons/{$iconb}\" width=\"11\" height=\"11\" border=\"0\"  
-								title='{$title}' name=\"toggle[]\"/></a>{$textse}
-							       </td>
+								echo "<tr><td class=\"listt\" style=\"align:center;\" valign=\"middle\">{$textss}";
+								if ($v['managed'] == 1) {
+									echo "<img {$style} src=\"../themes/{$g['theme']}/images/icons/{$iconb}\" width=\"11\" height=\"11\" border=\"0\" 
+									title='{$title}'/>{$textse}";
+								}
+								else {
+									echo "<a id=\"rule_{$gid}_{$sid}\" href='#'><input type=\"image\" onClick=\"document.getElementById('sid').value='{$sid}';
+									document.getElementById('gid').value='{$gid}';\" 
+									src=\"../themes/{$g['theme']}/images/icons/{$iconb}\" width=\"11\" height=\"11\" border=\"0\"  
+									title='{$title}' name=\"toggle[]\"/></a>{$textse}";
+								}
+							       echo "</td>
 							       <td class=\"listr\" align=\"center\" ondblclick=\"wopen('snort_rules_edit.php?id={$id}&openruleset={$currentruleset}&sid={$sid}&gid={$gid}','FileViewer',800,600);\">
 									{$textss}{$gid}{$textse}
 							       </td>
@@ -734,16 +795,35 @@ if ($savemsg) {
 						</thead>
 						<tbody>
 							<?php
-								$counter = $enable_cnt = $disable_cnt = 0;
+								$counter = $enable_cnt = $disable_cnt = $user_enable_cnt = $user_disable_cnt = $managed_count = 0;
 								foreach ($rules_map as $k1 => $rulem) {
 									foreach ($rulem as $k2 => $v) {
+										$ruleset = $currentruleset;
+										$style = "";
 										$sid = snort_get_sid($v['rule']);
 										$gid = snort_get_gid($v['rule']);
-										if (isset($disablesid[$gid][$sid])) {
+
+										if ($v['managed'] == 1) {
+											if ($v['disabled'] == 1) {
+												$textss = "<span class=\"gray\">";
+												$textse = "</span>";
+												$style= "style=\"opacity: 0.4; filter: alpha(opacity=40);\"";
+												$title = gettext("Auto-disabled by settings on SID Mgmt tab");
+											}
+											else {
+												$textss = $textse = "";
+												$ruleset = "suricata.rules";
+												$title = gettext("Auto-managed by settings on SID Mgmt tab");
+											}
+											$iconb = "icon_advanced.gif";
+											$managed_count++;
+										}
+										elseif (isset($disablesid[$gid][$sid])) {
 											$textss = "<span class=\"gray\">";
 											$textse = "</span>";
 											$iconb = "icon_reject_d.gif";
 											$disable_cnt++;
+											$user_disable_cnt++;
 											$title = gettext("Disabled by user. Click to toggle to enabled state");
 										}
 										elseif (($v['disabled'] == 1) && (!isset($enablesid[$gid][$sid]))) {
@@ -757,6 +837,7 @@ if ($savemsg) {
 											$textss = $textse = "";
 											$iconb = "icon_reject.gif";
 											$enable_cnt++;
+											$user_enable_cnt++;
 											$title = gettext("Enabled by user. Click to toggle to disabled state");
 										}
 										else {
@@ -777,12 +858,18 @@ if ($savemsg) {
 										else
 											$policy = "none";
 
-										echo "<tr><td class=\"listt\" align=\"left\" valign=\"middle\">{$textss}
-										<input type=\"image\" onClick=\"document.getElementById('sid').value='{$sid}';
-										document.getElementById('gid').value='{$gid}';\" 
-										src=\"../themes/{$g['theme']}/images/icons/{$iconb}\" width=\"11\" height=\"11\" border=\"0\"  
-										title='{$title}' name=\"toggle[]\"/>{$textse}
-							       			</td>
+										echo "<tr><td class=\"listt\" style=\"align:center;\" valign=\"middle\">{$textss}";
+										if ($v['managed'] == 1) {
+											echo "<img {$style} src=\"../themes/{$g['theme']}/images/icons/{$iconb}\" width=\"11\" height=\"11\" border=\"0\" 
+											title='{$title}'/>{$textse}";
+										}
+										else {
+											echo "<a id=\"rule_{$gid}_{$sid}\" href='#'><input type=\"image\" onClick=\"document.getElementById('sid').value='{$sid}';
+											document.getElementById('gid').value='{$gid}';\" 
+											src=\"../themes/{$g['theme']}/images/icons/{$iconb}\" width=\"11\" height=\"11\" border=\"0\"  
+											title='{$title}' name=\"toggle[]\"/></a>{$textse}";
+										}
+									       echo "</td>
 									       <td class=\"listr\" align=\"center\" ondblclick=\"wopen('snort_rules_edit.php?id={$id}&openruleset={$currentruleset}&sid={$sid}&gid={$gid}','FileViewer',800,600);\">
 											{$textss}{$gid}{$textse}
 									       </td>
@@ -824,7 +911,10 @@ if ($savemsg) {
 							<strong><?php echo gettext("---  Category Rules Summary  ---") . "</strong><br/>" . 
 							gettext("Total Rules: {$counter}") . "&nbsp;&nbsp;&nbsp;&nbsp;" . 
 							gettext("Enabled: {$enable_cnt}") . "&nbsp;&nbsp;&nbsp;&nbsp;" . 
-							gettext("Disabled: {$disable_cnt}"); ?></td>
+							gettext("Disabled: {$disable_cnt}") . "&nbsp;&nbsp;&nbsp;&nbsp;" . 
+							gettext("User Enabled: {$user_enable_cnt}") . "&nbsp;&nbsp;&nbsp;&nbsp;" . 
+							gettext("User Disabled: {$user_disable_cnt}") . "&nbsp;&nbsp;&nbsp;&nbsp;" . 
+							gettext("Auto-Managed: {$managed_count}"); ?></td>
 						</tr>
 						<tr>
 							<td width="16"><img src="../themes/<?= $g['theme']; ?>/images/icons/icon_block.gif"
@@ -846,6 +936,18 @@ if ($savemsg) {
 								width="11" height="11"></td>
 							<td nowrap><?php echo gettext("Rule changed to Disabled by user"); ?></td>
 						</tr>
+					<?php if (!empty($cat_mods)): ?>
+						<tr>
+							<td width="16"><img src="../themes/<?= $g['theme']; ?>/images/icons/icon_advanced.gif"
+								width="11" height="11"></td>
+							<td nowrap><?php echo gettext("Rule auto-enabled by files configured on SID Mgmt tab"); ?></td>
+						</tr>
+						<tr>
+							<td width="16"><img style="opacity: 0.4; filter: alpha(opacity=40);" src="../themes/<?= $g['theme']; ?>/images/icons/icon_advanced.gif"
+								width="11" height="11"></td>
+							<td nowrap><?php echo gettext("Rule auto-disabled by files configured on SID Mgmt tab"); ?></td>
+						</tr>
+					<?php endif; ?>
 					</table>
 				</td>
 			</tr>
diff --git a/config/snort/snort_rulesets.php b/config/snort/snort_rulesets.php
index 59fe6eef..23f9665b 100755
--- a/config/snort/snort_rulesets.php
+++ b/config/snort/snort_rulesets.php
@@ -172,6 +172,9 @@ if ($_POST["save"]) {
 	$enabled_rulesets_array = explode("||", $enabled_items);
 	if (snort_is_running($snort_uuid, $if_real))
 		$savemsg = gettext("Snort is 'live-reloading' the new rule set.");
+
+	// Sync to configured CARP slaves if any are enabled
+	snort_sync_on_changes();
 }
 
 if ($_POST['unselectall']) {
@@ -226,6 +229,10 @@ if ($_POST['selectall']) {
 	}
 }
 
+// Get any automatic rule category enable/disable modifications
+// if auto-SID Mgmt is enabled.
+$cat_mods = snort_sid_mgmt_auto_categories($a_nat[$id], FALSE);
+
 $if_friendly = convert_friendly_interface_to_friendly_descr($a_nat[$id]['interface']);
 $pgtitle = gettext("Snort: Interface {$if_friendly} - Categories");
 include_once("head.inc");
@@ -261,7 +268,8 @@ if ($savemsg) {
 	$tab_array[5] = array(gettext("Pass Lists"), false, "/snort/snort_passlist.php");
 	$tab_array[6] = array(gettext("Suppress"), false, "/snort/snort_interfaces_suppress.php");
 	$tab_array[7] = array(gettext("IP Lists"), false, "/snort/snort_ip_list_mgmt.php");
-	$tab_array[8] = array(gettext("Sync"), false, "/pkg_edit.php?xml=snort/snort_sync.xml");
+	$tab_array[8] = array(gettext("SID Mgmt"), false, "/snort/snort_sid_mgmt.php");
+	$tab_array[9] = array(gettext("Sync"), false, "/pkg_edit.php?xml=snort/snort_sync.xml");
 	display_top_tabs($tab_array, true);
 	echo '</td></tr>';
 	echo '<tr><td class="tabnavtbl">';
@@ -389,14 +397,25 @@ if ($savemsg) {
 			</tr>
 			<tr>
 				<td colspan="6">
-					<table width=90% align="center" border="0" cellpadding="2" cellspacing="0">
-						<tr height="45px">
-							<td valign="middle"><input value="Select All" class="formbtns" type="submit" name="selectall" id="selectall" title="<?php echo gettext("Add all categories to enforcing rules"); ?>"/></td>
-							<td valign="middle"><input value="Unselect All" class="formbtns" type="submit" name="unselectall" id="unselectall" title="<?php echo gettext("Remove categories all from enforcing rules"); ?>"/></td>
-							<td valign="middle"><input value=" Save " class="formbtns" type="submit" name="save" id="save" title="<?php echo gettext("Save changes to enforcing rules and rebuild"); ?>"/></td>
-							<td valign="middle"><span class="vexpl"><?php echo gettext("Click to save changes and auto-resolve flowbit rules (if option is selected above)"); ?></span></td>
+					<table width="95%" style="margin-left: auto; margin-right: auto;" border="0" cellpadding="2" cellspacing="0">
+						<tbody>
+						<tr height="32px">
+							<td style="vertical-align: middle;"><input value="Select All" class="formbtns" type="submit" name="selectall" id="selectall" title="<?php echo gettext("Add all to enforcing rules"); ?>"/></td>
+							<td style="vertical-align: middle;"><input value="Unselect All" class="formbtns" type="submit" name="unselectall" id="unselectall" title="<?php echo gettext("Remove all from enforcing rules"); ?>"/></td>
+							<td style="vertical-align: middle;"><input value=" Save " class="formbtns" type="submit" name="save" id="save" title="<?php echo gettext("Save changes to enforcing rules and rebuild"); ?>"/></td>
+							<td style="vertical-align: middle;"><span class="vexpl"><?php echo gettext("Click to save changes and auto-resolve flowbit rules (if option is selected above)"); ?></span></td>
 						</tr>
+					<?php if (!empty($cat_mods)): ?>
+						<tr height="20px">
+							<td colspan="4" style="vertical-align: middle;"><img style="vertical-align: text-top;" src="../themes/<?=$g['theme'];?>/images/icons/icon_advanced.gif" width="11" height="11" border="0" />
+							<?=gettext("- Category is auto-enabled by SID Mgmt conf files");?>&nbsp;&nbsp;&nbsp;
+							<img style="opacity: 0.4; filter: alpha(opacity=40); vertical-align: text-top;" src="../themes/<?=$g['theme'];?>/images/icons/icon_advanced.gif" width="11" height="11" border="0" />
+							<?=gettext("- Category is auto-disabled by SID Mgmt conf files");?></td>
+						</tr>
+					<?php endif; ?>
+						</tbody>
 					</table>
+				</td>
 			</tr>
 			<?php if ($no_community_files)
 				$msg_community = "NOTE: Snort Community Rules have not been downloaded.  Perform a Rules Update to enable them.";
@@ -409,22 +428,34 @@ if ($savemsg) {
 				<td width="5%" class="listhdrr"><?php echo gettext("Enabled"); ?></td>
 				<td colspan="5" class="listhdrr"><?php echo gettext('Ruleset: Snort GPLv2 Community Rules');?></td>
 			</tr>
-			<?php if (in_array($community_rules_file, $enabled_rulesets_array)): ?>
+			<?php if (isset($cat_mods[$community_rules_file])): ?>
+				<?php if ($cat_mods[$community_rules_file] == 'enabled') : ?>
+					<tr>
+						<td width="5%" class="listr" style="text-align: center;">
+						<img src="../themes/<?=$g['theme'];?>/images/icons/icon_advanced.gif" width="11" height="11" border="0" title="<?=gettext("Auto-managed by settings on SID Mgmt tab");?>" /></td>
+						<td colspan="5" class="listr"><a href='suricata_rules.php?id=<?=$id;?>&openruleset=<?=$community_rules_file;?>'><?=gettext("{$msg_community}");?></a></td>
+					</tr>
+				<?php else: ?>
+					<tr>
+						<td width="5%" class="listr" style="text-align: center;">
+						<img style="opacity: 0.4; filter: alpha(opacity=40);" src="../themes/<?=$g['theme'];?>/images/icons/icon_advanced.gif" width="11" height="11" border="0" title="<?=gettext("Auto-managed by settings on SID Mgmt tab");?>" /></td>
+						<td colspan="5" class="listr"><?=gettext("{$msg_community}"); ?></td>
+					</tr>
+				<?php endif; ?>
+			<?php elseif (in_array($community_rules_file, $enabled_rulesets_array)): ?>
 			<tr>
-				<td width="5" class="listr" align="center" valign="top">
+				<td width="5%" class="listr" style="text-align: center;">
 				<input type="checkbox" name="toenable[]" value="<?=$community_rules_file;?>" checked="checked"/></td>
-				<td colspan="5" class="listr"><a href='snort_rules.php?id=<?=$id;?>&openruleset=<?=$community_rules_file;?>'><?php echo gettext("{$msg_community}"); ?></a></td>
+				<td colspan="5" class="listr"><a href='suricata_rules.php?id=<?=$id;?>&openruleset=<?=$community_rules_file;?>'><?php echo gettext("{$msg_community}"); ?></a></td>
 			</tr>
 			<?php else: ?>
 			<tr>
-				<td width="5" class="listr" align="center" valign="top">
+				<td width="5%" class="listr" style="text-align: center;">
 				<input type="checkbox" name="toenable[]" value="<?=$community_rules_file;?>" <?php if ($snortcommunitydownload == 'off') echo "disabled"; ?>/></td>
 				<td colspan="5" class="listr"><?php echo gettext("{$msg_community}"); ?></td>
 			</tr>
-
 			<?php endif; ?>
 			<?php endif; ?>
-
 			<?php if ($no_emerging_files && ($emergingdownload == 'on' || $etpro == 'on'))
 				  $msg_emerging = "have not been downloaded.";
 			      else
@@ -489,15 +520,28 @@ if ($savemsg) {
 					echo "<tr>\n";
 					if (!empty($emergingrules[$j])) {
 						$file = $emergingrules[$j];
-						echo "<td width='5%' class='listr' align=\"center\" valign=\"top\">";
+						echo "<td width='5%' class='listr' align=\"center\">";
 						if(is_array($enabled_rulesets_array)) {
-							if(in_array($file, $enabled_rulesets_array))
+							if(in_array($file, $enabled_rulesets_array) && !isset($cat_mods[$file]))
 								$CHECKED = " checked=\"checked\"";
 							else
 								$CHECKED = "";
 						} else
 							$CHECKED = "";
-						echo "	\n<input type='checkbox' name='toenable[]' value='$file' {$CHECKED} />\n";
+						if (isset($cat_mods[$file])) {
+							if (in_array($file, $enabled_rulesets_array))
+								echo "<input type='hidden' name='toenable[]' value='{$file}' />\n";
+							if ($cat_mods[$file] == 'enabled') {
+								$CHECKED = "enabled";
+								echo "	\n<img src=\"../themes/{$g['theme']}/images/icons/icon_advanced.gif\" width=\"11\" height=\"11\" border=\"0\" title=\"" . gettext("Auto-enabled by settings on SID Mgmt tab") . "\" />\n";
+							}
+							else {
+								echo "	\n<img style=\"opacity: 0.4; filter: alpha(opacity=40);\" src=\"../themes/{$g['theme']}/images/icons/icon_advanced.gif\" width=\"11\" height=\"11\" border=\"0\" title=\"" . gettext("Auto-disabled by settings on SID Mgmt tab") . "\" />\n";
+							}
+						}
+						else {
+							echo "	\n<input type='checkbox' name='toenable[]' value='{$file}' {$CHECKED} />\n";
+						}
 						echo "</td>\n";
 						echo "<td class='listr' width='25%' >\n";
 						if (empty($CHECKED))
@@ -510,17 +554,30 @@ if ($savemsg) {
 
 					if (!empty($snortrules[$j])) {
 						$file = $snortrules[$j];
-						echo "<td class='listr' width='5%' align=\"center\" valign=\"top\">";
+						echo "<td class='listr' width='5%' align=\"center\">";
 						if(is_array($enabled_rulesets_array)) {
 							if (!empty($disable_vrt_rules))
 								$CHECKED = $disable_vrt_rules;
-							elseif(in_array($file, $enabled_rulesets_array))
+							elseif(in_array($file, $enabled_rulesets_array) && !isset($cat_mods[$file]))
 								$CHECKED = " checked=\"checked\"";
 							else
 								$CHECKED = "";
 						} else
 							$CHECKED = "";
-						echo "	\n<input type='checkbox' name='toenable[]' value='{$file}' {$CHECKED} />\n";
+						if (isset($cat_mods[$file])) {
+							if (in_array($file, $enabled_rulesets_array))
+								echo "<input type='hidden' name='toenable[]' value='{$file}' />\n";
+							if ($cat_mods[$file] == 'enabled') {
+								$CHECKED = "enabled";
+								echo "	\n<img src=\"../themes/{$g['theme']}/images/icons/icon_advanced.gif\" width=\"11\" height=\"11\" border=\"0\" title=\"" . gettext("Auto-enabled by settings on SID Mgmt tab") . "\" />\n";
+							}
+							else {
+								echo "	\n<img style=\"opacity: 0.4; filter: alpha(opacity=40);\" src=\"../themes/{$g['theme']}/images/icons/icon_advanced.gif\" width=\"11\" height=\"11\" border=\"0\" title=\"" . gettext("Auto-disabled by settings on SID Mgmt tab") . "\" />\n";
+							}
+						}
+						else {
+							echo "	\n<input type='checkbox' name='toenable[]' value='{$file}' {$CHECKED} />\n";
+						}
 						echo "</td>\n";
 						echo "<td class='listr' width='25%' >\n";
 						if (empty($CHECKED) || $CHECKED == "disabled")
@@ -530,22 +587,39 @@ if ($savemsg) {
 						echo "</td>\n";
 					} else
 						echo "<td class='listbggrey' width='30%' colspan='2'><br/></td>\n";
+
 					if (!empty($snortsorules[$j])) {
 						$file = $snortsorules[$j];
 						echo "<td class='listr' width='5%' align=\"center\" valign=\"top\">";
 						if(is_array($enabled_rulesets_array)) {
 							if (!empty($disable_vrt_rules))
 								$CHECKED = $disable_vrt_rules;
-							elseif(in_array($file, $enabled_rulesets_array))
+							elseif(in_array($file, $enabled_rulesets_array) && !isset($cat_mods[$file]))
 								$CHECKED = " checked=\"checked\"";
 							else
 								$CHECKED = "";
 						} else
 							$CHECKED = "";
-						echo "	\n<input type='checkbox' name='toenable[]' value='{$file}' {$CHECKED} />\n";
+						if (isset($cat_mods[$file])) {
+							if (in_array($file, $enabled_rulesets_array))
+								echo "<input type='hidden' name='toenable[]' value='{$file}' />\n";
+							if ($cat_mods[$file] == 'enabled') {
+								$CHECKED = "enabled";
+								echo "	\n<img src=\"../themes/{$g['theme']}/images/icons/icon_advanced.gif\" width=\"11\" height=\"11\" border=\"0\" title=\"" . gettext("Auto-enabled by settings on SID Mgmt tab") . "\" />\n";
+							}
+							else {
+								echo "	\n<img style=\"opacity: 0.4; filter: alpha(opacity=40);\" src=\"../themes/{$g['theme']}/images/icons/icon_advanced.gif\" width=\"11\" height=\"11\" border=\"0\" title=\"" . gettext("Auto-disabled by settings on SID Mgmt tab") . "\" />\n";
+							}
+						}
+						else {
+							echo "	\n<input type='checkbox' name='toenable[]' value='{$file}' {$CHECKED} />\n";
+						}
 						echo "</td>\n";
 						echo "<td class='listr' width='25%' >\n";
+						if (empty($CHECKED) || $CHECKED == "disabled")
 							echo $file;
+						else
+							echo "<a href='snort_rules.php?id={$id}&openruleset=" . urlencode($file) . "'>{$file}</a>\n";
 						echo "</td>\n";
 					} else
 						echo "<td class='listbggrey' width='30%' colspan='2'><br/></td>\n";
diff --git a/config/snort/snort_sid_mgmt.php b/config/snort/snort_sid_mgmt.php
new file mode 100644
index 00000000..5bc385c8
--- /dev/null
+++ b/config/snort/snort_sid_mgmt.php
@@ -0,0 +1,596 @@
+<?php
+/*
+ * snort_sid_mgmt.php
+ *
+ * Portions of this code are based on original work done for the
+ * Snort package for pfSense from the following contributors:
+ * 
+ * Copyright (C) 2005 Bill Marquette <bill.marquette@gmail.com>.
+ * Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
+ * Copyright (C) 2006 Scott Ullrich
+ * Copyright (C) 2009 Robert Zelaya Sr. Developer
+ * Copyright (C) 2012 Ermal Luci
+ * Copyright (C) 2014 Bill Meeks
+ * 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, $config, $rebuild_rules;
+
+$snortdir = SNORTDIR;
+$pconfig = array();
+
+// Grab saved settings from configuration
+if (!is_array($config['installedpackages']['snortglobal']['rule']))
+	$config['installedpackages']['snortglobal']['rule'] = array();
+$a_nat = &$config['installedpackages']['snortglobal']['rule'];
+
+$pconfig['auto_manage_sids'] = $config['installedpackages']['snortglobal']['auto_manage_sids'];
+
+// Hard-code the path where SID Mods Lists are stored
+// and disregard any user-supplied path element.
+$sidmods_path = SID_MODS_PATH;
+
+// Set default to not show SID modification lists editor controls
+$sidmodlist_edit_style = "display: none;";
+
+if (!empty($_POST))
+	$pconfig = $_POST;
+
+function snort_is_sidmodslist_active($sidlist) {
+
+	/*****************************************************
+	 * This function checks all the configured Snort     *
+	 * interfaces to see if the passed SID Mods List is  *
+	 * used by an interface.                             *
+	 *                                                   *
+	 * Returns: TRUE  if List is in use                  *
+	 *          FALSE if List is not in use              *
+	 *****************************************************/
+
+	global $g, $config;
+
+	if (!is_array($config['installedpackages']['snortglobal']['rule']))
+		return FALSE;
+
+	foreach ($config['installedpackages']['snortglobal']['rule'] as $rule) {
+		if ($rule['enable_sid_file'] == $sidlist) {
+			return TRUE;
+		}
+		if ($rule['disable_sid_file'] == $sidlist) {
+			return TRUE;
+		}
+		if ($rule['modify_sid_file'] == $sidlist) {
+			return TRUE;
+		}
+	}
+	return FALSE;
+}
+
+if (isset($_POST['upload'])) {
+	if ($_FILES["sidmods_fileup"]["error"] == UPLOAD_ERR_OK) {
+		$tmp_name = $_FILES["sidmods_fileup"]["tmp_name"];
+		$name = basename($_FILES["sidmods_fileup"]["name"]);
+		move_uploaded_file($tmp_name, "{$sidmods_path}{$name}");
+	}
+	else
+		$input_errors[] = gettext("Failed to upload file {$_FILES["sidmods_fileup"]["name"]}");
+}
+
+if (isset($_POST['sidlist_delete']) && isset($_POST['sidlist_fname'])) {
+	if (!snort_is_sidmodslist_active(basename($_POST['sidlist_fname'])))
+		unlink_if_exists($sidmods_path . basename($_POST['sidlist_fname']));
+	else
+		$input_errors[] = gettext("This SID Mods List is currently assigned to an interface and cannot be deleted.");
+}
+
+if (isset($_POST['sidlist_edit']) && isset($_POST['sidlist_fname'])) {
+	$file = $sidmods_path . basename($_POST['sidlist_fname']);
+	$data = file_get_contents($file);
+	if ($data !== FALSE) {
+		$sidmodlist_data = htmlspecialchars($data);
+		$sidmodlist_edit_style = "display: table-row-group;";
+		$sidmodlist_name = basename($_POST['sidlist_fname']);
+		unset($data);
+	}
+	else {
+		$input_errors[] = gettext("An error occurred reading the file.");
+	}
+}
+
+if (isset($_POST['save']) && isset($_POST['sidlist_data'])) {
+	if (strlen(basename($_POST['sidlist_name'])) > 0) {
+		$file = $sidmods_path . basename($_POST['sidlist_name']);
+		$data = str_replace("\r\n", "\n", $_POST['sidlist_data']);
+		file_put_contents($file, $data);
+		unset($data);
+	}
+	else {
+		$input_errors[] = gettext("You must provide a valid filename for the SID Mods List.");
+		$sidmodlist_edit_style = "display: table-row-group;";
+	}
+}
+
+if (isset($_POST['save_auto_sid_conf'])) {
+	$config['installedpackages']['snortglobal']['auto_manage_sids'] = $pconfig['auto_manage_sids'] ? "on" : "off";
+
+	// Grab the SID Mods config for the interfaces from the form's controls array
+	foreach ($_POST['sid_state_order'] as $k => $v) {
+		$a_nat[$k]['sid_state_order'] = $v;
+	}
+	foreach ($_POST['enable_sid_file'] as $k => $v) {
+		if ($v == "None") {
+			unset($a_nat[$k]['enable_sid_file']);
+			continue;
+		}
+		$a_nat[$k]['enable_sid_file'] = $v;
+	}
+	foreach ($_POST['disable_sid_file'] as $k => $v) {
+		if ($v == "None") {
+			unset($a_nat[$k]['disable_sid_file']);
+			continue;
+		}
+		$a_nat[$k]['disable_sid_file'] = $v;
+	}
+	foreach ($_POST['modify_sid_file'] as $k => $v) {
+		if ($v == "None") {
+			unset($a_nat[$k]['modify_sid_file']);
+			continue;
+		}
+		$a_nat[$k]['modify_sid_file'] = $v;
+	}
+
+	// Write the new configuration
+	write_config("Snort pkg: updated automatic SID management settings.");
+
+	$intf_msg = "";
+
+	// If any interfaces were marked for restart, then do it
+	if (is_array($_POST['torestart'])) {
+		foreach ($_POST['torestart'] as $k) {
+			// Update the snort.conf file and
+			// rebuild rules for this interface.
+			$rebuild_rules = true;
+			conf_mount_rw();
+			snort_generate_conf($a_nat[$k]);
+			conf_mount_ro();
+			$rebuild_rules = false;
+
+			// Signal Snort to "live reload" the rules
+			snort_reload_config($a_nat[$k]);
+
+			$intf_msg .= convert_friendly_interface_to_friendly_descr($a_nat[$k]['interface']) . ", ";
+		}
+		$savemsg = gettext("Changes were applied to these interfaces: " . trim($intf_msg, ' ,') . " and Snort signaled to live-load the new rules.");
+
+		// Sync to configured CARP slaves if any are enabled
+		snort_sync_on_changes();
+	}
+}
+
+if (isset($_POST['sidlist_dnload']) && isset($_POST['sidlist_fname'])) {
+	$file = $sidmods_path . basename($_POST['sidlist_fname']);
+	if (file_exists($file)) {
+		ob_start(); //important or other posts will fail
+		if (isset($_SERVER['HTTPS'])) {
+			header('Pragma: ');
+			header('Cache-Control: ');
+		} else {
+			header("Pragma: private");
+			header("Cache-Control: private, must-revalidate");
+		}
+		header("Content-Type: application/octet-stream");
+		header("Content-length: " . filesize($file));
+		header("Content-disposition: attachment; filename = " . basename($file));
+		ob_end_clean(); //important or other post will fail
+		readfile($file);
+	}
+	else
+		$savemsg = gettext("Unable to locate the file specified!");
+}
+
+if (isset($_POST['sidlist_dnload_all_x'])) {
+	$save_date = exec('/bin/date "+%Y-%m-%d-%H-%M-%S"');
+	$file_name = "snort_sid_conf_files_{$save_date}.tar.gz";
+	exec("cd {$sidmods_path} && /usr/bin/tar -czf /tmp/{$file_name} *");
+
+	if (file_exists("/tmp/{$file_name}")) {
+		ob_start(); //important or other posts will fail
+		if (isset($_SERVER['HTTPS'])) {
+			header('Pragma: ');
+			header('Cache-Control: ');
+		} else {
+			header("Pragma: private");
+			header("Cache-Control: private, must-revalidate");
+		}
+		header("Content-Type: application/octet-stream");
+		header("Content-length: " . filesize("/tmp/{$file_name}"));
+		header("Content-disposition: attachment; filename = {$file_name}");
+		ob_end_clean(); //important or other post will fail
+		readfile("/tmp/{$file_name}");
+
+		// Clean up the temp file
+		@unlink("/tmp/{$file_name}");
+	}
+	else
+		$savemsg = gettext("An error occurred while creating the gzip archive!");
+}
+
+// Get all files in the SID Mods Lists sub-directory as an array
+// Leave this as the last thing before spewing the page HTML
+// so we can pick up any changes made to files in code above.
+$sidmodfiles = return_dir_as_array($sidmods_path);
+$sidmodselections = array_merge(Array( "None" ), $sidmodfiles);
+
+$pgtitle = gettext("Snort: SID Management");
+include_once("head.inc");
+
+?>
+
+<body link="#000000" vlink="#000000" alink="#000000">
+
+<?php
+include_once("fbegin.inc");
+
+/* Display Alert message, under form tag or no refresh */
+if ($input_errors)
+	print_input_errors($input_errors);
+?>
+
+<form action="snort_sid_mgmt.php" method="post" enctype="multipart/form-data" name="iform" id="iform">
+<input type="hidden" name="MAX_FILE_SIZE" value="100000000" />
+<input type="hidden" name="sidlist_fname" id="sidlist_fname" value=""/>
+
+<?php
+if ($savemsg) {
+	/* Display save message */
+	print_info_box($savemsg);
+}
+?>
+
+<table width="100%" border="0" cellpadding="0" cellspacing="0">
+	<tbody>
+	<tr><td>
+	<?php
+		$tab_array = array();
+		$tab_array[0] = array(gettext("Snort Interfaces"), false, "/snort/snort_interfaces.php");
+		$tab_array[1] = array(gettext("Global Settings"), false, "/snort/snort_interfaces_global.php");
+		$tab_array[2] = array(gettext("Updates"), false, "/snort/snort_download_updates.php");
+		$tab_array[3] = array(gettext("Alerts"), false, "/snort/snort_alerts.php");
+		$tab_array[4] = array(gettext("Blocked"), false, "/snort/snort_blocked.php");
+		$tab_array[5] = array(gettext("Pass Lists"), false, "/snort/snort_passlist.php");
+		$tab_array[6] = array(gettext("Suppress"), false, "/snort/snort_interfaces_suppress.php");
+		$tab_array[7] = array(gettext("IP Lists"), false, "/snort/snort_ip_list_mgmt.php");
+		$tab_array[8] = array(gettext("SID Mgmt"), true, "/snort/snort_sid_mgmt.php");
+		$tab_array[9] = array(gettext("Sync"), false, "/pkg_edit.php?xml=snort/snort_sync.xml");
+		display_top_tabs($tab_array, true);
+	?>
+	</td></tr>
+	<tr><td>
+		<div id="mainarea">
+		<table id="maintable" class="tabcont" width="100%" border="0" cellpadding="6" cellspacing="0">
+			<tbody>
+			<tr>
+				<td colspan="2" valign="top" class="listtopic"><?php echo gettext("General Settings"); ?></td>
+			</tr>
+			<tr>
+				<td width="22%" valign="top" class="vncell"><?php echo gettext("Enable Automatic SID State Management"); ?></td>
+				<td width="78%" class="vtable"><input type="checkbox" id="auto_manage_sids" name="auto_manage_sids" value="on" 
+				<?php if ($pconfig['auto_manage_sids'] == 'on') echo " checked"; ?> onclick="enable_sid_conf();" />&nbsp;<?=gettext("Enable automatic management of rule state ") . 
+				gettext("and content using configuration files.  Default is ") . "<strong>" . gettext("Not Checked") . "</strong>";?>.<br/><br/>
+				<?=gettext("Snort will automatically enable/disable/modify text rules upon each update using criteria specified in configuration files.  ") . 
+				gettext("The supported configuration file format is the same as that used in the PulledPork and Oinkmaster enablesid.conf, disablesid.conf and ") . 
+				gettext("modifysid.conf files.  You can either upload existing files or create your own."); ?>
+				</td>
+			</tr>
+			</tbody>
+			<tbody id="sid_conf_rows">
+			<tr>
+				<td  colspan="2" valign="top" class="listtopic"><?php echo gettext("SID Management Configuration Files"); ?></td>
+			</tr>
+			<tr>
+				<td colspan="2" class="vtable" align="center" >
+					<table width="100%" border="0" cellpadding="4" cellspacing="0">
+						<tbody id="uploader" style="display: none;">
+						<tr>
+							<td class="list"><br/><?php echo gettext("Click BROWSE to select a file to import, and then click UPLOAD.  Click CLOSE to quit."); ?></td>
+						</tr>
+						<tr>
+							<td class="list"><input type="file" name="sidmods_fileup" id="sidmods_fileup" class="formfld file" size="50" />
+								&nbsp;&nbsp;<input type="submit" name="upload" id="upload" value="<?=gettext("Upload");?>" 
+								title="<?=gettext("Upload selected SID mods list to firewall");?>"/>&nbsp;&nbsp;<input type="button" 
+								value="<?=gettext("Close");?>" onClick="document.getElementById('uploader').style.display='none';" /><br/></td>
+							<td class="list"></td>
+						</tr>
+						</tbody>
+						<tbody>
+						<tr>
+							<td>
+								<table id="maintable" width="100%" border="0" cellpadding="4" cellspacing="0">
+									<colgroup>
+										<col style="width: 45%;">
+										<col style="width: 25%;">
+										<col style="width: 15%;">
+										<col style="width: 15%;">
+									</colgroup>
+									<thead>
+										<tr>
+											<th class="listhdrr"><?php echo gettext("SID Mods List File Name"); ?></th>
+											<th class="listhdrr"><?php echo gettext("Last Modified Time"); ?></th>
+											<th class="listhdrr"><?php echo gettext("File Size"); ?></th>
+											<th class="list" align="left"><img style="cursor:pointer;" name="sidlist_new" id="sidlist_new" 
+											src="../themes/<?= $g['theme']; ?>/images/icons/icon_plus.gif" width="17" 
+											height="17" border="0" title="<?php echo gettext('Create a new SID Mods List');?>" 
+											onClick="document.getElementById('sidlist_data').value=''; document.getElementById('sidlist_name').value=''; document.getElementById('sidlist_editor').style.display='table-row-group'; document.getElementById('sidlist_name').focus();" />
+											<img style="cursor:pointer;" name="sidlist_import" id="sidlist_import" 
+											onClick="document.getElementById('uploader').style.display='table-row-group';" 
+											src="../themes/<?= $g['theme']; ?>/images/icons/icon_import_alias.gif" width="17" 
+											height="17" border="0" title="<?php echo gettext('Import/Upload a SID Mods List');?>"/>
+											<input type="image" name="sidlist_dnload_all" id="sidlist_dnload_all" 
+											src="../tree/page-file_play.gif" width="16" height="16" border="0" 
+											title="<?php echo gettext('Download all SID Mods List files in a single gzip archive');?>"/>
+											</th>
+										</tr>
+									</thead>
+									<tbody>
+								<?php foreach ($sidmodfiles as $file): ?>
+									<tr>
+										<td class="listr"><?php echo gettext($file); ?></td>
+										<td class="listr"><?=date('M-d Y g:i a', filemtime("{$sidmods_path}{$file}")); ?></td>
+										<td class="listr"><?=format_bytes(filesize("{$sidmods_path}{$file}")); ?> </td>
+										<td class="list"><input type="image" name="sidlist_edit[]" id="sidlist_edit[]" 
+										onClick="document.getElementById('sidlist_fname').value='<?=$file;?>';" 
+										src="../themes/<?= $g['theme']; ?>/images/icons/icon_e.gif" width="17" 
+										height="17" border="0" title="<?php echo gettext('Edit this SID Mods List');?>"/>
+										<input type="image" name="sidlist_delete[]" id="sidlist_delete[]" 
+										onClick="document.getElementById('sidlist_fname').value='<?=$file;?>'; 
+										return confirm('<?=gettext("Are you sure you want to permanently delete this file?  Click OK to continue or CANCEL to quit.");?>');" 
+										src="../themes/<?= $g['theme']; ?>/images/icons/icon_x.gif" width="17" 
+										height="17" border="0" title="<?php echo gettext('Delete this SID Mods List');?>"/>
+										<input type="image" name="sidlist_dnload[]" id="sidlist_dnload[]" 
+										onClick="document.getElementById('sidlist_fname').value='<?=$file;?>';" 
+										src="../tree/page-file_play.gif" width="16" height="16" border="0" 
+										title="<?php echo gettext('Download this SID Mods List file');?>"/>
+										</td>
+									</tr>
+								<?php endforeach; ?>
+									</tbody>
+									<tbody id="sidlist_editor" style="<?=$sidmodlist_edit_style;?>">
+									<tr>
+										<td colspan="4">&nbsp;</td>
+									</tr>
+									<tr>
+										<td colspan="4"><strong><?=gettext("File Name: ");?></strong><input type="text" size="45" class="formfld file" id="sidlist_name" name="sidlist_name" value="<?=$sidmodlist_name;?>" />
+										&nbsp;&nbsp;<input type="submit" id="save" name="save" value="<?=gettext(" Save ");?>" title="<?=gettext("Save changes and close editor");?>" />
+										&nbsp;&nbsp;<input type="button" id="cancel" name="cancel" value="<?=gettext("Cancel");?>" onClick="document.getElementById('sidlist_editor').style.display='none';"  
+										title="<?=gettext("Abandon changes and quit editor");?>" /></td>
+									</tr>
+									<tr>
+										<td colspan="4">&nbsp;</td>
+									</tr>
+									<tr>
+										<td colspan="4"><textarea wrap="off" cols="80" rows="20" name="sidlist_data" id="sidlist_data" 
+										style="width:95%; height:100%;"><?=$sidmodlist_data;?></textarea>
+										</td>
+									</tr>
+									</tbody>
+									<tbody>
+									<tr>
+										<td colspan="3" class="vexpl"><br/><span class="red"><strong><?php echo gettext("Note:"); ?></strong></span>
+										<br/><?php echo gettext("SID Mods Lists are stored as local files on the firewall and their contents are " . 
+										"not saved as part of the firewall configuration file."); ?></td>
+										<td class="list"></td>
+									</tr>
+									<tr>
+										<td colspan="3" class="vexpl"><br/><strong><?php echo gettext("File List Controls:"); ?></strong><br/><br/>
+										&nbsp;&nbsp;<img src="../themes/<?= $g['theme']; ?>/images/icons/icon_plus.gif" width="17" height="17" border="0" />
+										&nbsp;<?=gettext("Opens the editor window to create a new SID Mods List.  You must provide a valid filename before saving.");?><br/>
+										&nbsp;&nbsp;<img src="../themes/<?= $g['theme']; ?>/images/icons/icon_import_alias.gif" width="17" height="17" border="0" />
+										&nbsp;<?=gettext("Opens the file upload control for uploading a new SID Mods List from your local machine.");?><br/>
+										&nbsp;&nbsp;<img src="../themes/<?= $g['theme']; ?>/images/icons/icon_e.gif" width="17" height="17" border="0" />
+										&nbsp;<?=gettext("Opens the SID Mods List in a text edit control for viewing or editing its contents.");?><br/>
+										&nbsp;&nbsp;<img src="../themes/<?= $g['theme']; ?>/images/icons/icon_x.gif" width="17" height="17" border="0" />
+										&nbsp;<?=gettext("Deletes the SID Mods List from the file system after confirmation.");?><br/>
+										&nbsp;&nbsp;<img src="../tree/page-file_play.gif" width="16" height="16" border="0" />
+										&nbsp;<?=gettext("Downloads the SID Mods List file to your local machine.");?><br/>
+										</td>
+										<td class="list"></td>
+									</tr>
+									</tbody>
+								</table>
+							</td>
+						</tr>
+						</tbody>
+					</table>
+				</td>
+			</tr>
+			<tr>
+				<td  colspan="2" valign="top" class="listtopic"><?php echo gettext("Interface SID Management File Assignments"); ?></td>
+			</tr>
+			<tr>
+				<td colspan="2" class="vtable" align="center" >
+					<table width="100%" border="0" cellpadding="2" cellspacing="0">
+						<tbody>
+						<tr>
+							<td>
+								<table width="100%" border="0" cellpadding="0" cellspacing="0">
+									<colgroup>
+										<col width="4%" align="center">
+										<col width="20" align="center">
+										<col width="16%" align="center">
+										<col width="20%" align="center">
+										<col width="20%" align="center">
+										<col width="20%" align="center">
+									</colgroup>
+									<thead>
+									   <tr>
+										<th class="listhdrr"><?=gettext("Rebuild"); ?></th>
+										<th class="listhdrr"><?=gettext("Interface"); ?></th>
+										<th class="listhdrr"><?=gettext("SID State Order"); ?></th>
+										<th class="listhdrr"><?=gettext("Enable SID File"); ?></th>
+										<th class="listhdrr"><?=gettext("Disable SID File"); ?></th>
+										<th class="listhdrr"><?=gettext("Modify SID File"); ?></th>
+									   </tr>
+									</thead>
+									<tbody>
+								   <?php foreach ($a_nat as $k => $natent): ?>
+									<tr>
+										<td class="listr" align="center">
+											<input type="checkbox" name="torestart[]" id="torestart[]" value="<?=$k;?>" title="<?=gettext("Apply new configuration and rebuild rules for this interface when saving");?>" />
+										</td>
+										<td class="listbg"><?=convert_friendly_interface_to_friendly_descr($natent['interface']); ?></td>
+										<td class="listr" align="center">
+											<select name="sid_state_order[<?=$k?>]" class="formselect" id="sid_state_order[<?=$k?>]">
+												<?php
+													foreach (array("disable_enable" => "Disable, Enable", "enable_disable" => "Enable, Disable") as $key => $order) {
+														if ($key == $natent['sid_state_order'])
+															echo "<option value='{$key}' selected>";
+														else
+															echo "<option value='{$key}'>";
+														echo htmlspecialchars($order) . '</option>';
+													}
+												?>
+											</select>
+										</td>
+										<td class="listr" align="center">
+											<select name="enable_sid_file[<?=$k?>]" class="formselect" id="enable_sid_file[<?=$k?>]">
+												<?php
+													foreach ($sidmodselections as $choice) {
+														if ($choice == $natent['enable_sid_file'])
+															echo "<option value='{$choice}' selected>";
+														else
+															echo "<option value='{$choice}'>";
+														echo htmlspecialchars(gettext($choice)) . '</option>';
+													}
+												?>
+											</select>
+										</td>
+										<td class="listr" align="center">
+											<select name="disable_sid_file[<?=$k?>]" class="formselect" id="disable_sid_file[<?=$k?>]">
+												<?php
+													foreach ($sidmodselections as $choice) {
+														if ($choice == $natent['disable_sid_file'])
+															echo "<option value='{$choice}' selected>";
+														else
+															echo "<option value='{$choice}'>";
+														echo htmlspecialchars(gettext($choice)) . '</option>';
+													}
+												?>
+											</select>
+										</td>
+										<td class="listr" align="center">
+											<select name="modify_sid_file[<?=$k?>]" class="formselect" id="modify_sid_file[<?=$k?>]">
+												<?php
+													foreach ($sidmodselections as $choice) {
+														if ($choice == $natent['modify_sid_file'])
+															echo "<option value='{$choice}' selected>";
+														else
+															echo "<option value='{$choice}'>";
+														echo htmlspecialchars(gettext($choice)) . '</option>';
+													}
+												?>
+											</select>
+										</td>
+									</tr>
+								   <?php endforeach; ?>
+									</tbody>
+								</table>
+							</td>
+						</tr>
+						<tr>
+							<td class="vexpl">&nbsp;
+							</td>
+						</tr>
+						<tr>
+							<td>
+								<table width="100%" cellpadding="2" cellspacing="2" border="0">
+									<tbody>
+									<tr>
+										<td colspan="2" class="vexpl" style="text-align: bottom;"><strong><span class="red"><?=gettext("Notes:");?></span></strong></td>
+									</tr>
+									<tr>
+										<td class="vexpl" style="vertical-align: top;"><?=gettext("1.");?></td>
+										<td class="vexpl"><?=gettext("Check the box beside an interface to immediately apply new auto-SID management ") . 
+										gettext("changes and signal Snort to live-load the new rules for the interface when clicking SAVE; ") . 
+										gettext("otherwise only the new file assignments will be saved.");?>
+										</td>
+									</tr>
+									<tr>
+										<td class="vexpl" style="vertical-align: top;"><?=gettext("2.");?></td>
+										<td class="vexpl"><?=gettext("SID State Order controls the order in which enable and disable state modifications are performed.  ") . 
+										gettext("An example would be to disable an entire category and later enable only a rule or two from it.  In this case you would ") . 
+										gettext("choose 'disable,enable' for the State Order.  Note that the last action performed takes priority.");?>
+										</td>
+									</tr>
+									<tr>
+										<td class="vexpl" style="vertical-align: top;"><?=gettext("3.");?></td>
+										<td class="vexpl"><?=gettext("The Enable SID File, Disable SID File and Modify SID File controls specify which rule modification ") . 
+										gettext("files are run automatically for the interface.  Setting a file control to 'None' disables that modification.  ") . 
+										gettext("Setting all file controls for an interface to 'None' disables automatic SID state management for the interface.");?>
+										</td>
+									</tr>
+									</tbody>
+								</table>
+							</td>
+						</tr>
+						</tbody>
+					</table>
+				</td>
+			</tr>
+			</tbody>
+			<tbody>
+			<tr>
+				<td colspan="2" class="vexpl" align="center"><input type="submit" id="save_auto_sid_conf" name="save_auto_sid_conf" class="formbtn" value="<?=gettext("Save");?>" title="<?=gettext("Save SID Management configuration");?>" />
+				&nbsp;&nbsp;<?=gettext("Remember to save changes before exiting this page"); ?>
+				</td>
+			</tr>
+			</tbody>
+		</table>
+		</div>
+	</td></tr>
+	</tbody>
+</table>
+</form>
+
+
+<?php include("fend.inc"); ?>
+<script type="text/javascript">
+
+function enable_sid_conf() {
+	var endis = !document.iform.auto_manage_sids.checked;
+	if (endis) {
+		document.getElementById("sid_conf_rows").style.display = "none";
+	}
+	else {
+		document.getElementById("sid_conf_rows").style.display = "";
+	}
+}
+
+enable_sid_conf();
+
+</script>
+</body>
+</html>