diff options
Diffstat (limited to 'config/snort-dev2/snort_preprocessors.php')
| -rw-r--r-- | config/snort-dev2/snort_preprocessors.php | 391 |
1 files changed, 391 insertions, 0 deletions
diff --git a/config/snort-dev2/snort_preprocessors.php b/config/snort-dev2/snort_preprocessors.php new file mode 100644 index 00000000..7f89d433 --- /dev/null +++ b/config/snort-dev2/snort_preprocessors.php @@ -0,0 +1,391 @@ +<?php +/* $Id$ */ +/* + snort_preprocessors.php + part of m0n0wall (http://m0n0.ch/wall) + + Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>. + Copyright (C) 2008-2009 Robert Zelaya. + Copyright (C) 2011 Ermal Luci + 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_gui.inc"); +require_once("/usr/local/pkg/snort/snort.inc"); + +global $g; + +if (!is_array($config['installedpackages']['snortglobal']['rule'])) { + $config['installedpackages']['snortglobal']['rule'] = array(); +} +$a_nat = &$config['installedpackages']['snortglobal']['rule']; + +$id = $_GET['id']; +if (isset($_POST['id'])) + $id = $_POST['id']; +if (is_null($id)) { + header("Location: /snort/snort_interfaces.php"); + exit; +} + +$pconfig = array(); +if (isset($id) && $a_nat[$id]) { + $pconfig = $a_nat[$id]; + + /* new options */ + $pconfig['perform_stat'] = $a_nat[$id]['perform_stat']; + $pconfig['def_ssl_ports_ignore'] = $a_nat[$id]['def_ssl_ports_ignore']; + $pconfig['flow_depth'] = $a_nat[$id]['flow_depth']; + $pconfig['max_queued_bytes'] = $a_nat[$id]['max_queued_bytes']; + $pconfig['max_queued_segs'] = $a_nat[$id]['max_queued_segs']; + $pconfig['perform_stat'] = $a_nat[$id]['perform_stat']; + $pconfig['http_inspect'] = $a_nat[$id]['http_inspect']; + $pconfig['other_preprocs'] = $a_nat[$id]['other_preprocs']; + $pconfig['ftp_preprocessor'] = $a_nat[$id]['ftp_preprocessor']; + $pconfig['smtp_preprocessor'] = $a_nat[$id]['smtp_preprocessor']; + $pconfig['sf_portscan'] = $a_nat[$id]['sf_portscan']; + $pconfig['dce_rpc_2'] = $a_nat[$id]['dce_rpc_2']; + $pconfig['dns_preprocessor'] = $a_nat[$id]['dns_preprocessor']; +} + +/* convert fake interfaces to real */ +$if_real = snort_get_real_interface($pconfig['interface']); +$snort_uuid = $pconfig['uuid']; + +/* alert file */ +$d_snortconfdirty_path = "/var/run/snort_conf_{$snort_uuid}_{$if_real}.dirty"; + +if ($_POST) { + + $natent = array(); + $natent = $pconfig; + + /* if no errors write to conf */ + if (!$input_errors) { + /* post new options */ + $natent['perform_stat'] = $_POST['perform_stat']; + if ($_POST['def_ssl_ports_ignore'] != "") { $natent['def_ssl_ports_ignore'] = $_POST['def_ssl_ports_ignore']; }else{ $natent['def_ssl_ports_ignore'] = ""; } + if ($_POST['flow_depth'] != "") { $natent['flow_depth'] = $_POST['flow_depth']; }else{ $natent['flow_depth'] = ""; } + if ($_POST['max_queued_bytes'] != "") { $natent['max_queued_bytes'] = $_POST['max_queued_bytes']; }else{ $natent['max_queued_bytes'] = ""; } + if ($_POST['max_queued_segs'] != "") { $natent['max_queued_segs'] = $_POST['max_queued_segs']; }else{ $natent['max_queued_segs'] = ""; } + + $natent['perform_stat'] = $_POST['perform_stat'] ? 'on' : 'off'; + $natent['http_inspect'] = $_POST['http_inspect'] ? 'on' : 'off'; + $natent['other_preprocs'] = $_POST['other_preprocs'] ? 'on' : 'off'; + $natent['ftp_preprocessor'] = $_POST['ftp_preprocessor'] ? 'on' : 'off'; + $natent['smtp_preprocessor'] = $_POST['smtp_preprocessor'] ? 'on' : 'off'; + $natent['sf_portscan'] = $_POST['sf_portscan'] ? 'on' : 'off'; + $natent['dce_rpc_2'] = $_POST['dce_rpc_2'] ? 'on' : 'off'; + $natent['dns_preprocessor'] = $_POST['dns_preprocessor'] ? 'on' : 'off'; + + if (isset($id) && $a_nat[$id]) + $a_nat[$id] = $natent; + else { + if (is_numeric($after)) + array_splice($a_nat, $after+1, 0, array($natent)); + else + $a_nat[] = $natent; + } + + write_config(); + + $if_real = snort_get_real_interface($pconfig['interface']); + sync_snort_package_config(); + + /* after click go to this page */ + header( 'Expires: Sat, 26 Jul 1997 05:00:00 GMT' ); + header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s' ) . ' GMT' ); + header( 'Cache-Control: no-store, no-cache, must-revalidate' ); + header( 'Cache-Control: post-check=0, pre-check=0', false ); + header( 'Pragma: no-cache' ); + header("Location: snort_preprocessors.php?id=$id"); + exit; + } +} + +$pgtitle = "Snort: Interface $id$if_real Preprocessors and Flow"; +include_once("head.inc"); + +?> +<body + link="#0000CC" vlink="#0000CC" alink="#0000CC"> + +<?php include("fbegin.inc"); ?> +<?if($pfsense_stable == 'yes'){echo '<p class="pgtitle">' . $pgtitle . '</p>';}?> + +<?php +echo "{$snort_general_css}\n"; +?> + +<div class="body2"> + +<noscript> +<div class="alert" ALIGN=CENTER><img + src="../themes/<?php echo $g['theme']; ?>/images/icons/icon_alert.gif" /><strong>Please +enable JavaScript to view this content +</CENTER></div> +</noscript> + + +<form action="snort_preprocessors.php" method="post" + enctype="multipart/form-data" name="iform" id="iform"><?php + + /* Display Alert message */ + + if ($input_errors) { + print_input_errors($input_errors); // TODO: add checks + } + + if ($savemsg) { + print_info_box2($savemsg); + } + + ?> + +<table width="100%" border="0" cellpadding="0" cellspacing="0"> +<tr><td> +<?php + $tab_array = array(); + $tabid = 0; + $tab_array[$tabid] = array(gettext("Snort Interfaces"), false, "/snort/snort_interfaces.php"); + $tabid++; + $tab_array[$tabid] = array(gettext("If Settings"), false, "/snort/snort_interfaces_edit.php?id={$id}"); + $tabid++; + $tab_array[$tabid] = array(gettext("Categories"), false, "/snort/snort_rulesets.php?id={$id}"); + $tabid++; + $tab_array[$tabid] = array(gettext("Rules"), false, "/snort/snort_rules.php?id={$id}"); + $tabid++; + $tab_array[$tabid] = array(gettext("Servers"), false, "/snort/snort_define_servers.php?id={$id}"); + $tabid++; + $tab_array[$tabid] = array(gettext("Preprocessors"), true, "/snort/snort_preprocessors.php?id={$id}"); + $tabid++; + $tab_array[$tabid] = array(gettext("Barnyard2"), false, "/snort/snort_barnyard.php?id={$id}"); + display_top_tabs($tab_array); +?> +</td></tr> + <tr> + <td class="tabcont"> + <table width="100%" border="0" cellpadding="6" cellspacing="0"> + <?php + /* display error code if there is no id */ + if($id == "") + { + echo " + <style type=\"text/css\"> + .noid { + position:absolute; + top:10px; + left:0px; + width:94%; + background:#FCE9C0; + background-position: 15px; + border-top:2px solid #DBAC48; + border-bottom:2px solid #DBAC48; + padding: 15px 10px 85% 50px; + } + </style> + <div class=\"alert\" ALIGN=CENTER><img src=\"../themes/{$g['theme']}/images/icons/icon_alert.gif\"/><strong>You can not edit options without an interface ID.</CENTER></div>\n"; + + } + ?> + <tr> + <td width="22%" valign="top"> </td> + <td width="78%"><span class="vexpl"><span class="red"><strong>Note: + </strong></span><br> + Rules may be dependent on preprocessors!<br> + Defaults will be used when there is no user input.<br></td> + </tr> + <tr> + <td colspan="2" valign="top" class="listtopic">Performance + Statistics</td> + </tr> + <tr> + <td width="22%" valign="top" class="vncell2">Enable</td> + <td width="78%" class="vtable"><input name="perform_stat" + type="checkbox" value="on" + <?php if ($pconfig['perform_stat']=="on") echo "checked"; ?> + onClick="enable_change(false)"> Performance Statistics for this + interface.</td> + </tr> + <tr> + <td colspan="2" valign="top" class="listtopic">HTTP Inspect Settings</td> + </tr> + <tr> + <td width="22%" valign="top" class="vncell2">Enable</td> + <td width="78%" class="vtable"><input name="http_inspect" + type="checkbox" value="on" + <?php if ($pconfig['http_inspect']=="on") echo "checked"; ?> + onClick="enable_change(false)"> Use HTTP Inspect to + Normalize/Decode and detect HTTP traffic and protocol anomalies.</td> + </tr> + <tr> + <td valign="top" class="vncell2">HTTP server flow depth</td> + <td class="vtable"> + <table cellpadding="0" cellspacing="0"> + <tr> + <td><input name="flow_depth" type="text" class="formfld" + id="flow_depth" size="5" + value="<?=htmlspecialchars($pconfig['flow_depth']);?>"> <strong>-1</strong> + to <strong>1460</strong> (<strong>-1</strong> disables HTTP + inspect, <strong>0</strong> enables all HTTP inspect)</td> + </tr> + </table> + Amount of HTTP server response payload to inspect. Snort's + performance may increase by adjusting this value.<br> + Setting this value too low may cause false negatives. Values above 0 + are specified in bytes. Default value is <strong>0</strong><br> + </td> + </tr> + <tr> + <td colspan="2" valign="top" class="listtopic">Stream5 Settings</td> + </tr> + <tr> + <td valign="top" class="vncell2">Max Queued Bytes</td> + <td class="vtable"> + <table cellpadding="0" cellspacing="0"> + <tr> + <td><input name="max_queued_bytes" type="text" class="formfld" + id="max_queued_bytes" size="5" + value="<?=htmlspecialchars($pconfig['max_queued_bytes']);?>"> + Minimum is <strong>1024</strong>, Maximum is <strong>1073741824</strong> + ( default value is <strong>1048576</strong>, <strong>0</strong> + means Maximum )</td> + </tr> + </table> + The number of bytes to be queued for reassembly for TCP sessions in + memory. Default value is <strong>1048576</strong><br> + </td> + </tr> + <tr> + <td valign="top" class="vncell2">Max Queued Segs</td> + <td class="vtable"> + <table cellpadding="0" cellspacing="0"> + <tr> + <td><input name="max_queued_segs" type="text" class="formfld" + id="max_queued_segs" size="5" + value="<?=htmlspecialchars($pconfig['max_queued_segs']);?>"> + Minimum is <strong>2</strong>, Maximum is <strong>1073741824</strong> + ( default value is <strong>2621</strong>, <strong>0</strong> means + Maximum )</td> + </tr> + </table> + The number of segments to be queued for reassembly for TCP sessions + in memory. Default value is <strong>2621</strong><br> + </td> + </tr> + <tr> + <td colspan="2" valign="top" class="listtopic">General Preprocessor + Settings</td> + </tr> + <tr> + <td width="22%" valign="top" class="vncell2">Enable <br> + RPC Decode and Back Orifice detector</td> + <td width="78%" class="vtable"><input name="other_preprocs" + type="checkbox" value="on" + <?php if ($pconfig['other_preprocs']=="on") echo "checked"; ?> + onClick="enable_change(false)"><br> + Normalize/Decode RPC traffic and detects Back Orifice traffic on the + network.</td> + </tr> + <tr> + <td width="22%" valign="top" class="vncell2">Enable <br> + FTP and Telnet Normalizer</td> + <td width="78%" class="vtable"><input name="ftp_preprocessor" + type="checkbox" value="on" + <?php if ($pconfig['ftp_preprocessor']=="on") echo "checked"; ?> + onClick="enable_change(false)"><br> + Normalize/Decode FTP and Telnet traffic and protocol anomalies.</td> + </tr> + <tr> + <td width="22%" valign="top" class="vncell2">Enable <br> + SMTP Normalizer</td> + <td width="78%" class="vtable"><input name="smtp_preprocessor" + type="checkbox" value="on" + <?php if ($pconfig['smtp_preprocessor']=="on") echo "checked"; ?> + onClick="enable_change(false)"><br> + Normalize/Decode SMTP protocol for enforcement and buffer overflows.</td> + </tr> + <tr> + <td width="22%" valign="top" class="vncell2">Enable <br> + Portscan Detection</td> + <td width="78%" class="vtable"><input name="sf_portscan" + type="checkbox" value="on" + <?php if ($pconfig['sf_portscan']=="on") echo "checked"; ?> + onClick="enable_change(false)"><br> + Detects various types of portscans and portsweeps.</td> + </tr> + <tr> + <td width="22%" valign="top" class="vncell2">Enable <br> + DCE/RPC2 Detection</td> + <td width="78%" class="vtable"><input name="dce_rpc_2" + type="checkbox" value="on" + <?php if ($pconfig['dce_rpc_2']=="on") echo "checked"; ?> + onClick="enable_change(false)"><br> + The DCE/RPC preprocessor detects and decodes SMB and DCE/RPC + traffic.</td> + </tr> + <tr> + <td width="22%" valign="top" class="vncell2">Enable <br> + DNS Detection</td> + <td width="78%" class="vtable"><input name="dns_preprocessor" + type="checkbox" value="on" + <?php if ($pconfig['dns_preprocessor']=="on") echo "checked"; ?> + onClick="enable_change(false)"><br> + The DNS preprocessor decodes DNS Response traffic and detects some + vulnerabilities.</td> + </tr> + <tr> + <td width="22%" valign="top" class="vncell2">Define SSL_IGNORE</td> + <td width="78%" class="vtable"><input name="def_ssl_ports_ignore" + type="text" class="formfld" id="def_ssl_ports_ignore" size="40" + value="<?=htmlspecialchars($pconfig['def_ssl_ports_ignore']);?>"> <br> + <span class="vexpl"> Encrypted traffic should be ignored by Snort + for both performance reasons and to reduce false positives.<br> + Default: "443 465 563 636 989 990 992 993 994 995".</span> <strong>Please + use spaces and not commas.</strong></td> + </tr> + <tr> + <td width="22%" valign="top"> </td> + <td width="78%"> + <input name="Submit" type="submit" class="formbtn" value="Save"> + <input name="id" type="hidden" value="<?=$id;?>"></td> + </tr> + <tr> + <td width="22%" valign="top"> </td> + <td width="78%"><span class="vexpl"><span class="red"><strong>Note:</strong></span> + <br> + Please save your settings before you click Start. </td> + </tr> + </table> + +</table> +</form> + +</div> + + <?php include("fend.inc"); ?> +</body> +</html> |