. Copyright (C) 2003-2004 Manuel Kasper . Copyright (C) 2006 Scott Ullrich All rights reserved. Modified for the Pfsense snort package v. 1.8+ Copyright (C) 2009 Robert Zelaya Sr. Developer 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("globals.inc"); require_once("guiconfig.inc"); require_once("/usr/local/pkg/snort/snort.inc"); $snortalertlogt = $config['installedpackages']['snortglobal']['snortalertlogtype']; $snort_logfile = '/var/log/snort/alert'; $pconfig['arefresh'] = $config['installedpackages']['snortglobal']['alertsblocks']['arefresh']; $pconfig['alertnumber'] = $config['installedpackages']['snortglobal']['alertsblocks']['alertnumber']; if ($pconfig['alertnumber'] == '' || $pconfig['alertnumber'] == '0') { $anentries = '250'; }else{ $anentries = $pconfig['alertnumber']; } if ($_POST['save']) { //unset($input_errors); //$pconfig = $_POST; /* input validation */ if ($_POST['save']) { // if (($_POST['radiusacctport'] && !is_port($_POST['radiusacctport']))) { // $input_errors[] = "A valid port number must be specified. [".$_POST['radiusacctport']."]"; // } } /* no errors */ if (!$input_errors) { $config['installedpackages']['snortglobal']['alertsblocks']['arefresh'] = $_POST['arefresh'] ? on : off; $config['installedpackages']['snortglobal']['alertsblocks']['alertnumber'] = $_POST['alertnumber']; conf_mount_rw(); write_config(); //conf_mount_ro(); sleep(2); header("Location: /snort/snort_alerts.php"); } } if ($_POST['delete']) { conf_mount_rw(); if(file_exists('/var/log/snort/alert')) { exec('/bin/echo "" > /var/log/snort/alert'); post_delete_logs(); exec('/usr/sbin/chown snort:snort /var/log/snort/*'); exec('/bin/chmod 660 /var/log/snort/*'); sleep(2); exec('/usr/bin/killall -HUP snort'); } conf_mount_ro(); } if ($_POST['download']) { ob_start(); //importanr or other post will fail $save_date = exec('/bin/date "+%Y-%m-%d-%H-%M-%S"'); $file_name = "snort_logs_{$save_date}.tar.gz"; exec("/usr/bin/tar cfz /tmp/snort_logs_{$save_date}.tar.gz /var/log/snort"); if(file_exists("/tmp/snort_logs_{$save_date}.tar.gz")) { $file = "/tmp/snort_logs_{$save_date}.tar.gz"; header("Expires: Mon, 26 Jul 1997 05:00:00 GMT\n"); header("Pragma: private"); // needed for IE header("Cache-Control: private, must-revalidate"); // needed for IE header('Content-type: application/force-download'); header('Content-Transfer-Encoding: Binary'); header("Content-length: ".filesize($file)); header("Content-disposition: attachment; filename = {$file_name}"); readfile("$file"); exec("/bin/rm /tmp/snort_logs_{$save_date}.tar.gz"); od_end_clean(); //importanr or other post will fail }else{ echo 'Error no saved file.'; } } /* WARNING: took me forever to figure reg expression, dont lose */ // $fileline = '12/09-18:12:02.086733 [**] [122:6:0] (portscan) TCP Filtered Decoy Portscan [**] [Priority: 3] {PROTO:255} 125.135.214.166 -> 70.61.243.50'; function get_snort_alert_date($fileline) { /* date full date \d+\/\d+-\d+:\d+:\d+\.\d+\s */ if (preg_match("/\d+\/\d+-\d+:\d+:\d\d/", $fileline, $matches1)) { $alert_date = "$matches1[0]"; } return $alert_date; } function get_snort_alert_disc($fileline) { /* disc */ if (preg_match("/\[\*\*\] (\[.*\]) (.*) (\[\*\*\])/", $fileline, $matches)) { $alert_disc = "$matches[2]"; } return $alert_disc; } function get_snort_alert_class($fileline) { /* class */ if (preg_match('/\[Classification:\s.+[^\d]\]/', $fileline, $matches2)) { $alert_class = "$matches2[0]"; } return $alert_class; } function get_snort_alert_priority($fileline) { /* Priority */ if (preg_match('/Priority:\s\d/', $fileline, $matches3)) { $alert_priority = "$matches3[0]"; } return $alert_priority; } function get_snort_alert_proto($fileline) { /* Priority */ if (preg_match('/\{.+\}/', $fileline, $matches3)) { $alert_proto = "$matches3[0]"; } return $alert_proto; } function get_snort_alert_proto_full($fileline) { /* Protocal full */ if (preg_match('/.+\sTTL/', $fileline, $matches2)) { $alert_proto_full = "$matches2[0]"; } return $alert_proto_full; } function get_snort_alert_ip_src($fileline) { /* SRC IP */ $re1='.*?'; # Non-greedy match on filler $re2='((?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))(?![\\d])'; # IPv4 IP Address 1 if ($c=preg_match_all ("/".$re1.$re2."/is", $fileline, $matches4)) { $alert_ip_src = $matches4[1][0]; } return $alert_ip_src; } function get_snort_alert_src_p($fileline) { /* source port */ if (preg_match('/:\d+\s-/', $fileline, $matches5)) { $alert_src_p = "$matches5[0]"; } return $alert_src_p; } function get_snort_alert_flow($fileline) { /* source port */ if (preg_match('/(->|<-)/', $fileline, $matches5)) { $alert_flow = "$matches5[0]"; } return $alert_flow; } function get_snort_alert_ip_dst($fileline) { /* DST IP */ $re1dp='.*?'; # Non-greedy match on filler $re2dp='(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(?![\\d])'; # Uninteresting: ipaddress $re3dp='.*?'; # Non-greedy match on filler $re4dp='((?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))(?![\\d])'; # IPv4 IP Address 1 if ($c=preg_match_all ("/".$re1dp.$re2dp.$re3dp.$re4dp."/is", $fileline, $matches6)) { $alert_ip_dst = $matches6[1][0]; } return $alert_ip_dst; } function get_snort_alert_dst_p($fileline) { /* dst port */ if (preg_match('/:\d+$/', $fileline, $matches7)) { $alert_dst_p = "$matches7[0]"; } return $alert_dst_p; } function get_snort_alert_dst_p_full($fileline) { /* dst port full */ if (preg_match('/:\d+\n[A-Z]+\sTTL/', $fileline, $matches7)) { $alert_dst_p = "$matches7[0]"; } return $alert_dst_p; } function get_snort_alert_sid($fileline) { /* SID */ if (preg_match('/\[\d+:\d+:\d+\]/', $fileline, $matches8)) { $alert_sid = "$matches8[0]"; } return $alert_sid; } // $pgtitle = "Services: Snort: Snort Alerts"; include("head.inc"); ?> "; if($pfsense_stable == 'yes'){echo $pgtitle;} echo "

\n"; /* refresh every 60 secs */ if ($pconfig['arefresh'] == 'on' || $pconfig['arefresh'] == '') { echo "\n"; } ?>
Last Alert Entries. Latest Alert Entries Are Listed First.
Save or Remove Logs
All log files will be saved. Warning: all log files will be deleted.
Auto Refresh and Log View
Refresh > Default is ON. Enter the number of log entries to view. Default is 250.

Filter:
\n"; } // } } ?>
# PRI PROTO DESCRIPTION CLASS SRC SPORT FLOW DST DPORT SID Date
{$counter} {$alert_priority} {$alert_proto} {$alert_disc} {$alert_class} {$alert_ip_src} {$alert_src_p} {$alert_flow} {$alert_ip_dst} {$alert_dst_p} {$alert_sid} {$alert_date}