diff options
Diffstat (limited to 'config')
| -rw-r--r-- | config/snort-dev/snort.inc | 2823 | ||||
| -rw-r--r-- | config/snort-dev/snort.xml | 3 |
2 files changed, 1423 insertions, 1403 deletions
diff --git a/config/snort-dev/snort.inc b/config/snort-dev/snort.inc index 12dc77a2..9cb812d0 100644 --- a/config/snort-dev/snort.inc +++ b/config/snort-dev/snort.inc @@ -1,1402 +1,1421 @@ -<?php -/* $Id$ */ -/* - snort.inc - Copyright (C) 2006 Scott Ullrich - part of pfSense - 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("pfsense-utils.inc"); - -// Needed on 2.0 because of get_vpns_list() -require_once("filter.inc"); - -/* Allow additional execution time 0 = no limit. */ -ini_set('max_execution_time', '9999'); -ini_set('max_input_time', '9999'); - -/* define oinkid */ -if($config['installedpackages']['snort']) - $oinkid = $config['installedpackages']['snort']['config'][0]['oinkmastercode']; - -function sync_package_snort_reinstall() -{ - global $config; - if(!$config['installedpackages']['snort']) - return; - - /* create snort configuration file */ - create_snort_conf(); - - /* start snort service */ - start_service("snort"); -} - -function sync_package_snort() -{ - global $config, $g; - - mwexec("mkdir -p /var/log/snort/"); - - if(!file_exists("/var/log/snort/alert")) - touch("/var/log/snort/alert"); - - /* snort -> advanced features */ - $bpfbufsize = $config['installedpackages']['snortadvanced']['config'][0]['bpfbufsize']; - $bpfmaxbufsize = $config['installedpackages']['snortadvanced']['config'][0]['bpfmaxbufsize']; - $bpfmaxinsns = $config['installedpackages']['snortadvanced']['config'][0]['bpfmaxinsns']; - - /* set the snort performance model */ - if($config['installedpackages']['snort']['config'][0]['performance']) - $snort_performance = $config['installedpackages']['snort']['config'][0]['performance']; - else - $snort_performance = "ac-bnfa"; - - conf_mount_rw(); - /* create a few directories and ensure the sample files are in place */ - exec("/bin/mkdir -p /usr/local/etc/snort"); - exec("/bin/mkdir -p /var/log/snort"); - exec("/bin/mkdir -p /usr/local/etc/snort/rules"); - exec("/bin/cp /usr/local/etc/snort/unicode.map-sample /usr/local/etc/snort/unicode.map"); - exec("/bin/cp /usr/local/etc/snort/classification.config-sample /usr/local/etc/snort/classification.config"); - exec("/bin/cp /usr/local/etc/snort/gen-msg.map-sample /usr/local/etc/snort/gen-msg.map"); - exec("/bin/cp /usr/local/etc/snort/generators-sample /usr/local/etc/snort/generators"); - exec("/bin/cp /usr/local/etc/snort/reference.config-sample /usr/local/etc/snort/reference.config"); - exec("/bin/cp /usr/local/etc/snort/sid-msg.map-sample /usr/local/etc/snort/sid-msg.map"); - exec("/bin/cp /usr/local/etc/snort/sid-sample /usr/local/etc/snort/sid"); - exec("/bin/cp /usr/local/etc/snort/threshold.conf-sample /usr/local/etc/snort/threshold.conf"); - exec("/bin/cp /usr/local/etc/snort/unicode.map-sample /usr/local/etc/snort/unicode.map"); - exec("/usr/bin/touch /usr/local/etc/snort/rules/local.rules"); - exec("/bin/rm -f /usr/local/etc/rc.d/snort"); - - - $first = 0; - $snortInterfaces = array(); /* -gtm */ - - $if_list = $config['installedpackages']['snort']['config'][0]['iface_array']; - $if_array = split(',', $if_list); - //print_r($if_array); - if($if_array) { - foreach($if_array as $iface) { - $if = convert_friendly_interface_to_real_interface_name($iface); - - if($config['interfaces'][$iface]['ipaddr'] == "pppoe") { - $if = "ng0"; - } - - /* build a list of user specified interfaces -gtm */ - if($if){ - array_push($snortInterfaces, $if); - $first = 1; - } - } - - if (count($snortInterfaces) < 1) { - log_error("Snort will not start. You must select an interface for it to listen on."); - return; - } - } - //print_r($snortInterfaces); - - /* create log directory */ - $start = "/bin/mkdir -p /var/log/snort\n"; - - /* snort advanced features - bpf tuning */ - if($bpfbufsize) - $start .= "sysctl net.bpf.bufsize={$bpfbufsize}\n"; - if($bpfmaxbufsize) - $start .= "sysctl net.bpf.maxbufsize={$bpfmaxbufsize}\n"; - if($bpfmaxinsns) - $start .= "sysctl net.bpf.maxinsns={$bpfmaxinsns}\n"; - - /* go ahead and issue bpf changes */ - if($bpfbufsize) - mwexec_bg("sysctl net.bpf.bufsize={$bpfbufsize}"); - if($bpfmaxbufsize) - mwexec_bg("sysctl net.bpf.maxbufsize={$bpfmaxbufsize}"); - if($bpfmaxinsns) - mwexec_bg("sysctl net.bpf.maxinsns={$bpfmaxinsns}"); - - /* always stop snort2c before starting snort -gtm */ - $start .= "/usr/bin/killall barnyard2\n"; - - /* start a snort process for each interface -gtm */ - /* Note the sleep delay. Seems to help getting mult interfaces to start -gtm */ - /* snort start options are; config file, log file, demon, interface, packet flow, alert type, quiet */ - /* TODO; get snort to start under nologin shell */ - foreach($snortInterfaces as $snortIf) - { - $start .= "sleep 8\n"; - $start .= "snort -c /usr/local/etc/snort/snort.conf -l /var/log/snort -D -i {$snortIf} -q\n"; - - /* define snortbarnyardlog_chk */ - $snortbarnyardlog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['snortbarnyardlog']; - if ($snortbarnyardlog_info_chk == on) - $start .= "\nsleep 4;barnyard2 -c /usr/local/etc/barnyard2.conf -d /var/log/snort -f snort.u2 -w /usr/local/etc/snort/barnyard2.waldo -D -q\n"; - } - -// /* if block offenders is checked, start snort2c */ -// if($_POST['blockoffenders']) { -// $start .= "\nsleep 8\n"; -// $start .= "snort2c -w /var/db/whitelist -a /var/log/snort/alert\n"; -// } - - $if_snort_pid = "\nif ls /tmp/snort.sh.pid > /dev/null\nthen\n echo \"snort.sh is running\"\n exit 0\nelse\n echo \"snort.sh is not running\"\nfi\n"; - $echo_snort_sh_pid = "\necho \"snort.sh run\" > /tmp/snort.sh.pid\n"; - $echo_snort_sh_startup_log = "\necho \"snort.sh run\" >> /tmp/snort.sh_startup.log\n"; - $sample_before = "\nBEFORE_MEM=`top | grep Free | grep Wired | awk '{print \$10}'`\n"; - $sample_after = "\nAFTER_MEM=`top | grep Free | grep Wired | awk '{print \$10}'`\n"; - $sleep_before_final = "\necho \"Sleeping before final memory sampling...\"\nsleep 17"; - $total_free_after = "\nTOTAL_USAGE=`top | grep snort | grep -v grep | awk '{ print \$6 }'`\n"; - $echo_usage = "\necho \"Ram free BEFORE starting Snort: \${BEFORE_MEM} -- Ram free AFTER starting Snort: \${AFTER_MEM}\" -- Mode {$snort_performance} -- Snort memory usage: \$TOTAL_USAGE | logger -p daemon.info -i -t SnortStartup\n"; - $rm_snort_sh_pid = "\nrm /tmp/snort.sh.pid\n"; - - /* write out rc.d start/stop file */ - write_rcfile(array( - "file" => "snort.sh", - "start" => "{$if_snort_pid}{$echo_snort_sh_pid}{$echo_snort_sh_startup_log}{$sample_before}{$start}{$sleep_before_final}{$sample_after}{$echo_usage}{$rm_snort_sh_pid}", - "stop" => "/usr/bin/killall snort; killall snort2c" - ) - ); - - /* create snort configuration file */ - create_snort_conf(); - -/* create barnyard2 configuration file */ -$snortbarnyardlog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['snortbarnyardlog']; -if ($snortbarnyardlog_info_chk == on) - create_barnyard2_conf(); - - - /* start snort service */ - conf_mount_ro(); - start_service("snort"); -} - -/* open barnyard2.conf for writing */ -function create_barnyard2_conf() { - global $bconfig, $bg; - /* write out barnyard2_conf */ - $barnyard2_conf_text = generate_barnyard2_conf(); -// conf_mount_rw(); - $bconf = fopen("/usr/local/etc/barnyard2.conf", "w"); - if(!$bconf) { - log_error("Could not open /usr/local/etc/barnyard2.conf for writing."); - exit; - } - fwrite($bconf, $barnyard2_conf_text); - fclose($bconf); -// conf_mount_ro(); -} - -/* open barnyard2.conf for writing" */ -function generate_barnyard2_conf() { - - global $config, $g; - conf_mount_rw(); - -/* define snortbarnyardlog */ -$snortbarnyardlog_database_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['snortbarnyardlog_database']; - -$barnyard2_conf_text = <<<EOD - - Copyright (C) 2006 Scott Ullrich - part of pfSense - All rights reserved. - -# set the appropriate paths to the file(s) your Snort process is using -config reference-map: /usr/local/etc/snort/reference.config -config class-map: /usr/local/etc/snort/classification.config -config gen-msg-map: /usr/local/etc/snort/gen-msg.map -config sid-msg-map: /usr/local/etc/snort/sid-msg.map - -config hostname: pfsense.local -config interface: vr0 - -# Step 2: setup the input plugins -input unified2 - -# database: log to a variety of databases -# output database: log, mysql, user=snort password=snort123 dbname=snort host=192.168.1.22 - -$snortbarnyardlog_database_info_chk - -EOD; - - return $barnyard2_conf_text; - -} - - -function create_snort_conf() { - global $config, $g; - /* write out snort.conf */ - $snort_conf_text = generate_snort_conf(); - conf_mount_rw(); - $conf = fopen("/usr/local/etc/snort/snort.conf", "w"); - if(!$conf) { - log_error("Could not open /usr/local/etc/snort/snort.conf for writing."); - exit; - } - fwrite($conf, $snort_conf_text); - fclose($conf); - conf_mount_ro(); -} - -function snort_deinstall() { -// $text_ww = "*/60\t* \t 1\t *\t *\t root\t /usr/bin/nice -n20 /usr/local/pkg/snort_check_for_rule_updates.php"; -// $filenamea = "/etc/crontab"; - /* remove auto rules update helper */ -// remove_text_from_file($filenamea, $text_ww); - /* remove custom sysctl */ - remove_text_from_file("/etc/sysctl.conf", "sysctl net.bpf.bufsize=20480"); - /* decrease bpf buffers back to 4096, from 20480 */ - exec("/sbin/sysctl net.bpf.bufsize=4096"); - exec("/usr/bin/killall snort"); - sleep(5); - exec("/usr/bin/killall -9 snort"); - exec("rm -f /usr/local/etc/rc.d/snort*"); - exec("rm -rf /usr/local/etc/snort*"); - exec("cd /var/db/pkg && pkg_delete `ls | grep snort`"); - exec("cd /var/db/pkg && pkg_delete `ls | grep mysql-client`"); - exec("cd /var/db/pkg && pkg_delete `ls | grep libdnet`"); - exec("/usr/bin/killall -9 snort"); - exec("/usr/bin/killall snort"); -} - -function generate_snort_conf() { - - global $config, $g; - conf_mount_rw(); - /* obtain external interface */ - /* XXX: make multi wan friendly */ - $snort_ext_int = $config['installedpackages']['snort']['config'][0]['iface_array'][0]; - - $snort_config_pass_thru = $config['installedpackages']['snortadvanced']['config'][0]['configpassthru']; - -/* define snortalertlogtype */ -$snortalertlogtype = $config['installedpackages']['snortadvanced']['config'][0]['snortalertlogtype']; -if ($snortalertlogtype == fast) - $snortalertlogtype_type = "output alert_fast: alert"; -else - $snortalertlogtype_type = "output alert_full: alert"; - -/* define alertsystemlog */ -$alertsystemlog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['alertsystemlog']; -if ($alertsystemlog_info_chk == on) - $alertsystemlog_type = "output alert_syslog: log_alert"; - -/* define tcpdumplog */ -$tcpdumplog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['tcpdumplog']; -if ($tcpdumplog_info_chk == on) - $tcpdumplog_type = "output log_tcpdump: snorttcpd.log"; - -/* define snortbarnyardlog_chk */ -$snortbarnyardlog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['snortbarnyardlog']; -if ($snortbarnyardlog_info_chk == on) - $snortbarnyardlog_type = "barnyard2 -c /usr/local/etc/barnyard2.conf -d /var/log/snort -f snort.u2 -w /usr/local/etc/snort/barnyard2.waldo -D"; - -/* define snortunifiedlog */ -$snortunifiedlog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['snortunifiedlog']; -if ($snortunifiedlog_info_chk == on) - $snortunifiedlog_type = "output unified2: filename snort.u2, limit 128"; - -/* define spoink */ -$spoink_info_chk = $config['installedpackages']['snort']['config'][0]['blockoffenders7']; -if ($spoink_info_chk == on) - $spoink_type = "output alert_pf: /var/db/whitelist,snort2c"; - -/* define servers and ports snortdefservers */ - -/* def DNS_SERVSERS */ -$def_dns_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_dns_servers']; -if ($def_dns_servers_info_chk == "") - $def_dns_servers_type = "\$HOME_NET"; -else - $def_dns_servers_type = "$def_dns_servers_info_chk"; - -/* def DNS_PORTS */ -$def_dns_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_dns_ports']; -if ($def_dns_ports_info_chk == "") - $def_dns_ports_type = "53"; -else - $def_dns_ports_type = "$def_dns_ports_info_chk"; - -/* def SMTP_SERVSERS */ -$def_smtp_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_smtp_servers']; -if ($def_smtp_servers_info_chk == "") - $def_smtp_servers_type = "\$HOME_NET"; -else - $def_smtp_servers_type = "$def_smtp_servers_info_chk"; - -/* def SMTP_PORTS */ -$def_smtp_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_smtp_ports']; -if ($def_smtp_ports_info_chk == "") - $def_smtp_ports_type = "25"; -else - $def_smtp_ports_type = "$def_smtp_ports_info_chk"; - -/* def MAIL_PORTS */ -$def_mail_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_mail_ports']; -if ($def_mail_ports_info_chk == "") - $def_mail_ports_type = "25,143,465,691"; -else - $def_mail_ports_type = "$def_mail_ports_info_chk"; - -/* def HTTP_SERVSERS */ -$def_http_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_http_servers']; -if ($def_http_servers_info_chk == "") - $def_http_servers_type = "\$HOME_NET"; -else - $def_http_servers_type = "$def_http_servers_info_chk"; - -/* def WWW_SERVSERS */ -$def_www_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_www_servers']; -if ($def_www_servers_info_chk == "") - $def_www_servers_type = "\$HOME_NET"; -else - $def_www_servers_type = "$def_www_servers_info_chk"; - -/* def HTTP_PORTS */ -$def_http_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_http_ports']; -if ($def_http_ports_info_chk == "") - $def_http_ports_type = "80"; -else - $def_http_ports_type = "$def_http_ports_info_chk"; - -/* def SQL_SERVSERS */ -$def_sql_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_sql_servers']; -if ($def_sql_servers_info_chk == "") - $def_sql_servers_type = "\$HOME_NET"; -else - $def_sql_servers_type = "$def_sql_servers_info_chk"; - -/* def ORACLE_PORTS */ -$def_oracle_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_oracle_ports']; -if ($def_oracle_ports_info_chk == "") - $def_oracle_ports_type = "1521"; -else - $def_oracle_ports_type = "$def_oracle_ports_info_chk"; - -/* def MSSQL_PORTS */ -$def_mssql_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_mssql_ports']; -if ($def_mssql_ports_info_chk == "") - $def_mssql_ports_type = "1433"; -else - $def_mssql_ports_type = "$def_mssql_ports_info_chk"; - -/* def TELNET_SERVSERS */ -$def_telnet_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_telnet_servers']; -if ($def_telnet_servers_info_chk == "") - $def_telnet_servers_type = "\$HOME_NET"; -else - $def_telnet_servers_type = "$def_telnet_servers_info_chk"; - -/* def TELNET_PORTS */ -$def_telnet_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_telnet_ports']; -if ($def_telnet_ports_info_chk == "") - $def_telnet_ports_type = "23"; -else - $def_telnet_ports_type = "$def_telnet_ports_info_chk"; - -/* def SNMP_SERVSERS */ -$def_snmp_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_snmp_servers']; -if ($def_snmp_servers_info_chk == "") - $def_snmp_servers_type = "\$HOME_NET"; -else - $def_snmp_servers_type = "$def_snmp_servers_info_chk"; - -/* def SNMP_PORTS */ -$def_snmp_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_snmp_ports']; -if ($def_snmp_ports_info_chk == "") - $def_snmp_ports_type = "161"; -else - $def_snmp_ports_type = "$def_snmp_ports_info_chk"; - -/* def FTP_SERVSERS */ -$def_ftp_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_ftp_servers']; -if ($def_ftp_servers_info_chk == "") - $def_ftp_servers_type = "\$HOME_NET"; -else - $def_ftp_servers_type = "$def_ftp_servers_info_chk"; - -/* def FTP_PORTS */ -$def_ftp_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_ftp_ports']; -if ($def_ftp_ports_info_chk == "") - $def_ftp_ports_type = "21"; -else - $def_ftp_ports_type = "$def_ftp_ports_info_chk"; - -/* def SSH_SERVSERS */ -$def_ssh_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_ssh_servers']; -if ($def_ssh_servers_info_chk == "") - $def_ssh_servers_type = "\$HOME_NET"; -else - $def_ssh_servers_type = "$def_ssh_servers_info_chk"; - -/* if user has defined a custom ssh port, use it */ -if($config['system']['ssh']['port']) - $ssh_port = $config['system']['ssh']['port']; -else - $ssh_port = "22"; - -/* def SSH_PORTS */ -$def_ssh_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_ssh_ports']; -if ($def_ssh_ports_info_chk == "") - $def_ssh_ports_type = "{$ssh_port}"; -else - $def_ssh_ports_type = "$def_ssh_ports_info_chk"; - -/* def POP_SERVSERS */ -$def_pop_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_pop_servers']; -if ($def_pop_servers_info_chk == "") - $def_pop_servers_type = "\$HOME_NET"; -else - $def_pop_servers_type = "$def_pop_servers_info_chk"; - -/* def POP2_PORTS */ -$def_pop2_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_pop2_ports']; -if ($def_pop2_ports_info_chk == "") - $def_pop2_ports_type = "109"; -else - $def_pop2_ports_type = "$def_pop2_ports_info_chk"; - -/* def POP3_PORTS */ -$def_pop3_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_pop3_ports']; -if ($def_pop3_ports_info_chk == "") - $def_pop3_ports_type = "110"; -else - $def_pop3_ports_type = "$def_pop3_ports_info_chk"; - -/* def IMAP_SERVSERS */ -$def_imap_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_imap_servers']; -if ($def_imap_servers_info_chk == "") - $def_imap_servers_type = "\$HOME_NET"; -else - $def_imap_servers_type = "$def_imap_servers_info_chk"; - -/* def IMAP_PORTS */ -$def_imap_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_imap_ports']; -if ($def_imap_ports_info_chk == "") - $def_imap_ports_type = "143"; -else - $def_imap_ports_type = "$def_imap_ports_info_chk"; - -/* def SIP_PROXY_IP */ -$def_sip_proxy_ip_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_sip_proxy_ip']; -if ($def_sip_proxy_ip_info_chk == "") - $def_sip_proxy_ip_type = "\$HOME_NET"; -else - $def_sip_proxy_ip_type = "$def_sip_proxy_ip_info_chk"; - -/* def SIP_PROXY_PORTS */ -$def_sip_proxy_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_sip_proxy_ports']; -if ($def_sip_proxy_ports_info_chk == "") - $def_sip_proxy_ports_type = "5060:5090,16384:32768"; -else - $def_sip_proxy_ports_type = "$def_sip_proxy_ports_info_chk"; - -/* def AUTH_PORTS */ -$def_auth_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_auth_ports']; -if ($def_auth_ports_info_chk == "") - $def_auth_ports_type = "113"; -else - $def_auth_ports_type = "$def_auth_ports_info_chk"; - -/* def FINGER_PORTS */ -$def_finger_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_finger_ports']; -if ($def_finger_ports_info_chk == "") - $def_finger_ports_type = "79"; -else - $def_finger_ports_type = "$def_finger_ports_info_chk"; - -/* def IRC_PORTS */ -$def_irc_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_irc_ports']; -if ($def_irc_ports_info_chk == "") - $def_irc_ports_type = "6665,6666,6667,6668,6669,7000"; -else - $def_irc_ports_type = "$def_irc_ports_info_chk"; - -/* def NNTP_PORTS */ -$def_nntp_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_nntp_ports']; -if ($def_nntp_ports_info_chk == "") - $def_nntp_ports_type = "119"; -else - $def_nntp_ports_type = "$def_nntp_ports_info_chk"; - -/* def RLOGIN_PORTS */ -$def_rlogin_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_rlogin_ports']; -if ($def_rlogin_ports_info_chk == "") - $def_rlogin_ports_type = "513"; -else - $def_rlogin_ports_type = "$def_rlogin_ports_info_chk"; - -/* def RSH_PORTS */ -$def_rsh_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_rsh_ports']; -if ($def_rsh_ports_info_chk == "") - $def_rsh_ports_type = "514"; -else - $def_rsh_ports_type = "$def_rsh_ports_info_chk"; - -/* def SSL_PORTS */ -$def_ssl_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_ssl_ports']; -if ($def_ssl_ports_info_chk == "") - $def_ssl_ports_type = "25,443,465,636,993,995"; -else - $def_ssl_ports_type = "$def_ssl_ports_info_chk"; - - /* add auto update scripts to /etc/crontab */ -// $text_ww = "*/60\t* \t 1\t *\t *\t root\t /usr/bin/nice -n20 /usr/local/pkg/snort_check_for_rule_updates.php"; -// $filenamea = "/etc/crontab"; -// remove_text_from_file($filenamea, $text_ww); -// add_text_to_file($filenamea, $text_ww); -// exec("killall -HUP cron"); */ - - /* should we install a automatic update crontab entry? */ - $automaticrulesupdate = $config['installedpackages']['snort']['config'][0]['automaticrulesupdate']; - - /* if user is on pppoe, we really want to use ng0 interface */ - if($config['interfaces'][$snort_ext_int]['ipaddr'] == "pppoe") - $snort_ext_int = "ng0"; - - /* set the snort performance model */ - if($config['installedpackages']['snort']['config'][0]['performance']) - $snort_performance = $config['installedpackages']['snort']['config'][0]['performance']; - else - $snort_performance = "ac-bnfa"; - - /* set the snort block hosts time */ - $snort_rm_blocked_info_ck = $config['installedpackages']['snort']['config'][0]['rm_blocked']; - if ($snort_rm_blocked_info_ck == "never_b") - $snort_rm_blocked_false = ""; - else - $snort_rm_blocked_false = "true"; - -function snort_rm_blocked_install_cron($should_install) { - global $config, $g; - - if ($g['booting']==true) - return; - - $is_installed = false; - - if(!$config['cron']['item']) - return; - - $x=0; - foreach($config['cron']['item'] as $item) { - if (strstr($item['command'], "snort2c")) { - $is_installed = true; - break; - } - $x++; - } - $snort_rm_blocked_info_ck = $config['installedpackages']['snort']['config'][0]['rm_blocked']; - if ($snort_rm_blocked_info_ck == "1h_b") { - $snort_rm_blocked_min = "*"; - $snort_rm_blocked_hr = "*/1"; - $snort_rm_blocked_mday = "*"; - $snort_rm_blocked_month = "*"; - $snort_rm_blocked_wday = "*"; - } - if ($snort_rm_blocked_info_ck == "3h_b") { - $snort_rm_blocked_min = "*"; - $snort_rm_blocked_hr = "*/3"; - $snort_rm_blocked_mday = "*"; - $snort_rm_blocked_month = "*"; - $snort_rm_blocked_wday = "*"; - } - if ($snort_rm_blocked_info_ck == "6h_b") { - $snort_rm_blocked_min = "*"; - $snort_rm_blocked_hr = "*/6"; - $snort_rm_blocked_mday = "*"; - $snort_rm_blocked_month = "*"; - $snort_rm_blocked_wday = "*"; - } - if ($snort_rm_blocked_info_ck == "12h_b") { - $snort_rm_blocked_min = "*"; - $snort_rm_blocked_hr = "*/12"; - $snort_rm_blocked_mday = "*"; - $snort_rm_blocked_month = "*"; - $snort_rm_blocked_wday = "*"; - } - if ($snort_rm_blocked_info_ck == "1d_b") { - $snort_rm_blocked_min = "*"; - $snort_rm_blocked_hr = "*"; - $snort_rm_blocked_mday = "*/1"; - $snort_rm_blocked_month = "*"; - $snort_rm_blocked_wday = "*"; - } - if ($snort_rm_blocked_info_ck == "4d_b") { - $snort_rm_blocked_min = "*"; - $snort_rm_blocked_hr = "*"; - $snort_rm_blocked_mday = "*/4"; - $snort_rm_blocked_month = "*"; - $snort_rm_blocked_wday = "*"; - } - if ($snort_rm_blocked_info_ck == "7d_b") { - $snort_rm_blocked_min = "*"; - $snort_rm_blocked_hr = "*"; - $snort_rm_blocked_mday = "*/7"; - $snort_rm_blocked_month = "*"; - $snort_rm_blocked_wday = "*"; - } - if ($snort_rm_blocked_info_ck == "28d_b") { - $snort_rm_blocked_min = "*"; - $snort_rm_blocked_hr = "*"; - $snort_rm_blocked_mday = "*/28"; - $snort_rm_blocked_month = "*"; - $snort_rm_blocked_wday = "*"; - } - switch($should_install) { - case true: - if(!$is_installed) { - $cron_item = array(); - $cron_item['minute'] = "$snort_rm_blocked_min"; - $cron_item['hour'] = "$snort_rm_blocked_hr"; - $cron_item['mday'] = "$snort_rm_blocked_mday"; - $cron_item['month'] = "$snort_rm_blocked_month"; - $cron_item['wday'] = "$snort_rm_blocked_wday"; - $cron_item['who'] = "root"; - $cron_item['command'] = "/usr/bin/nice -n20 /usr/local/sbin/expiretable -t 3600 snort2c"; - $config['cron']['item'][] = $cron_item; - write_config("Installed 15 minute filter reload for Time Based Rules"); - configure_cron(); - } - break; - case false: - if($is_installed == true) { - if($x > 0) { - unset($config['cron']['item'][$x]); - write_config(); - } - configure_cron(); - } - break; - } -} - -snort_rm_blocked_install_cron(""); -snort_rm_blocked_install_cron($snort_rm_blocked_false); - - - /* open snort2c's whitelist for writing */ - $whitelist = fopen("/var/db/whitelist", "w"); - if(!$whitelist) { - log_error("Could not open /var/db/whitelist for writing."); - return; - } - - /* build an interface array list */ - $int_array = array('lan'); - for ($j = 1; isset ($config['interfaces']['opt' . $j]); $j++) - if(isset($config['interfaces']['opt' . $j]['enable'])) - if(!$config['interfaces']['opt' . $j]['gateway']) - $int_array[] = "opt{$j}"; - - /* iterate through interface list and write out whitelist items - * and also compile a home_net list for snort. - */ - foreach($int_array as $int) { - /* calculate interface subnet information */ - $ifcfg = &$config['interfaces'][$int]; - $subnet = gen_subnet($ifcfg['ipaddr'], $ifcfg['subnet']); - $subnetmask = gen_subnet_mask($ifcfg['subnet']); - if($subnet == "pppoe" or $subnet == "dhcp") { - $subnet = find_interface_ip("ng0"); - if($subnet) - $home_net .= "{$subnet} "; - } else { - if ($subnet) - if($ifcfg['subnet']) - $home_net .= "{$subnet}/{$ifcfg['subnet']} "; - } - } - - /* add all WAN ips to the whitelist */ - $wan_if = get_real_wan_interface(); - $ip = find_interface_ip($wan_if); - if($ip) - $home_net .= "{$ip} "; - - /* Add Gateway on WAN interface to whitelist (For RRD graphs) */ - $int = convert_friendly_interface_to_real_interface_name("WAN"); - $gw = get_interface_gateway($int); - if($gw) - $home_net .= "{$gw} "; - - /* Add DNS server for WAN interface to whitelist */ - $dns_servers = get_dns_servers(); - foreach($dns_servers as $dns) { - if($dns) - $home_net .= "{$dns} "; - } - - /* Add loopback to whitelist (ftphelper) */ - $home_net .= "127.0.0.1 "; - - /* iterate all vips and add to whitelist */ - if($config['virtualip']) - foreach($config['virtualip']['vip'] as $vip) - if($vip['subnet']) - $home_net .= $vip['subnet'] . " "; - - if($config['installedpackages']['snortwhitelist']) - foreach($config['installedpackages']['snortwhitelist']['config'] as $snort) - if($snort['ip']) - $home_net .= $snort['ip'] . " "; - - /* write out whitelist, convert spaces to carriage returns */ - $whitelist_home_net = str_replace(" ", " ", $home_net); - $whitelist_home_net = str_replace(" ", "\n", $home_net); - - /* make $home_net presentable to snort */ - $home_net = trim($home_net); - $home_net = str_replace(" ", ",", $home_net); - $home_net = "[{$home_net}]"; - - /* foreach through whitelist, writing out to file */ - $whitelist_split = split("\n", $whitelist_home_net); - foreach($whitelist_split as $wl) - if(trim($wl)) - fwrite($whitelist, trim($wl) . "\n"); - - /* should we whitelist vpns? */ - $whitelistvpns = $config['installedpackages']['snort']['config'][0]['whitelistvpns']; - - /* grab a list of vpns and whitelist if user desires */ - if($whitelistvpns) { - $vpns_list = get_vpns_list(); - $whitelist_vpns = split(" ", $vpns_list); - foreach($whitelist_split as $wl) - if(trim($wl)) - fwrite($whitelist, trim($wl) . "\n"); - } - - /* close file */ - fclose($whitelist); - - /* open snort's threshold.conf for writing */ - $threshlist = fopen("/usr/local/etc/snort/threshold.conf", "w"); - if(!$threshlist) { - log_error("Could not open /usr/local/etc/snort/threshold.conf for writing."); - return; - } - - /* list all entries to new lines */ - if($config['installedpackages']['snortthreshold']) - foreach($config['installedpackages']['snortthreshold']['config'] as $snortthreshlist) - if($snortthreshlist['threshrule']) - $snortthreshlist_r .= $snortthreshlist['threshrule'] . "\n"; - - - /* foreach through threshlist, writing out to file */ - $threshlist_split = split("\n", $snortthreshlist_r); - foreach($threshlist_split as $wl) - if(trim($wl)) - fwrite($threshlist, trim($wl) . "\n"); - - /* close snort's threshold.conf file */ - fclose($threshlist); - - /* generate rule sections to load */ - $enabled_rulesets = $config['installedpackages']['snort']['rulesets']; - if($enabled_rulesets) { - $selected_rules_sections = ""; - $enabled_rulesets_array = split("\|\|", $enabled_rulesets); - foreach($enabled_rulesets_array as $enabled_item) - $selected_rules_sections .= "include \$RULE_PATH/{$enabled_item}\n"; - } - - conf_mount_ro(); - - /* build snort configuration file */ - /* TODO; feed back from pfsense users to reduce false positives */ - $snort_conf_text = <<<EOD - -# snort configuration file -# generated by the pfSense -# package manager system -# see /usr/local/pkg/snort.inc -# for more information - -######################### - # -# Define Local Network # - # -######################### - -var HOME_NET {$home_net} -var EXTERNAL_NET !\$HOME_NET - -################### - # -# Define Servers # - # -################### - -var DNS_SERVERS [{$def_dns_servers_type}] -var SMTP_SERVERS [{$def_smtp_servers_type}] -var HTTP_SERVERS [{$def_http_servers_type}] -var SQL_SERVERS [{$def_sql_servers_type}] -var TELNET_SERVERS [{$def_telnet_servers_type}] -var SNMP_SERVERS [{$def_snmp_servers_type}] -var FTP_SERVERS [{$def_ftp_servers_type}] -var SSH_SERVERS [{$def_ssh_servers_type}] -var POP_SERVERS [{$def_pop_servers_type}] -var IMAP_SERVERS [{$def_imap_servers_type}] -var RPC_SERVERS \$HOME_NET -var WWW_SERVERS [{$def_www_servers_type}] -var SIP_PROXY_IP [{$def_sip_proxy_ip_type}] -var AIM_SERVERS \ -[64.12.24.0/23,64.12.28.0/23,64.12.161.0/24,64.12.163.0/24,64.12.200.0/24,205.188.3.0/24,205.188.5.0/24,205.188.7.0/24,205.188.9.0/24,205.188.153.0/24,205.188.179.0/24,205.188.248.0/24] - -######################## - # -# Define Server Ports # - # -######################## - -portvar HTTP_PORTS [{$def_http_ports_type}] -portvar SHELLCODE_PORTS !80 -portvar ORACLE_PORTS [{$def_oracle_ports_type}] -portvar AUTH_PORTS [{$def_auth_ports_type}] -portvar DNS_PORTS [{$def_dns_ports_type}] -portvar FINGER_PORTS [{$def_finger_ports_type}] -portvar FTP_PORTS [{$def_ftp_ports_type}] -portvar IMAP_PORTS [{$def_imap_ports_type}] -portvar IRC_PORTS [{$def_irc_ports_type}] -portvar MSSQL_PORTS [{$def_mssql_ports_type}] -portvar NNTP_PORTS [{$def_nntp_ports_type}] -portvar POP2_PORTS [{$def_pop2_ports_type}] -portvar POP3_PORTS [{$def_pop3_ports_type}] -portvar SUNRPC_PORTS [111,32770,32771,32772,32773,32774,32775,32776,32777,32778,32779] -portvar RLOGIN_PORTS [{$def_rlogin_ports_type}] -portvar RSH_PORTS [{$def_rsh_ports_type}] -portvar SMB_PORTS [139,445] -portvar SMTP_PORTS [{$def_smtp_ports_type}] -portvar SNMP_PORTS [{$def_snmp_ports_type}] -portvar SSH_PORTS [{$def_ssh_ports_type}] -portvar TELNET_PORTS [{$def_telnet_ports_type}] -portvar MAIL_PORTS [{$def_mail_ports_type}] -portvar SSL_PORTS [{$def_ssl_ports_type}] -portvar SIP_PROXY_PORTS [{$def_sip_proxy_ports_type}] - -# DCERPC NCACN-IP-TCP -portvar DCERPC_NCACN_IP_TCP [139,445] -portvar DCERPC_NCADG_IP_UDP [138,1024:] -portvar DCERPC_NCACN_IP_LONG [135,139,445,593,1024:] -portvar DCERPC_NCACN_UDP_LONG [135,1024:] -portvar DCERPC_NCACN_UDP_SHORT [135,593,1024:] -portvar DCERPC_NCACN_TCP [2103,2105,2107] -portvar DCERPC_BRIGHTSTORE [6503,6504] - -##################### - # -# Define Rule Paths # - # -##################### - -var RULE_PATH /usr/local/etc/snort/rules -# var PREPROC_RULE_PATH ./preproc_rules - -################################ - # -# Configure the snort decoder # - # -################################ - -config checksum_mode: all -config disable_decode_alerts -config disable_tcpopt_experimental_alerts -config disable_tcpopt_obsolete_alerts -config disable_ttcp_alerts -config disable_tcpopt_alerts -config disable_ipopt_alerts -config disable_decode_drops - -################################### - # -# Configure the detection engine # -# Use lower memory models # - # -################################### - -config detection: search-method {$snort_performance} -config detection: max_queue_events 5 -config event_queue: max_queue 8 log 3 order_events content_length - -#Configure dynamic loaded libraries -dynamicpreprocessor directory /usr/local/lib/snort/dynamicpreprocessor/ -dynamicengine /usr/local/lib/snort/dynamicengine/libsf_engine.so -dynamicdetection directory /usr/local/lib/snort/dynamicrules/ - -################### - # -# Flow and stream # - # -################### - -preprocessor frag3_global: max_frags 8192 -preprocessor frag3_engine: policy windows -preprocessor frag3_engine: policy linux -preprocessor frag3_engine: policy first -preprocessor frag3_engine: policy bsd detect_anomalies - -preprocessor stream5_global: max_tcp 8192, track_tcp yes, \ -track_udp yes, track_icmp yes -preprocessor stream5_tcp: bind_to any, policy windows -preprocessor stream5_tcp: bind_to any, policy linux -preprocessor stream5_tcp: bind_to any, policy vista -preprocessor stream5_tcp: bind_to any, policy macos -preprocessor stream5_tcp: policy BSD, ports both all, use_static_footprint_sizes -preprocessor stream5_udp -preprocessor stream5_icmp - -########################## - # -# NEW # -# Performance Statistics # - # -########################## - -preprocessor perfmonitor: time 300 file /var/log/snort/snort.stats pktcnt 10000 - -################# - # -# HTTP Inspect # - # -################# - -preprocessor http_inspect: global iis_unicode_map unicode.map 1252 - -preprocessor http_inspect_server: server default \ - ports { 80 8080 3128 } \ - no_alerts \ - non_strict \ - non_rfc_char { 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 } \ - flow_depth 0 \ - apache_whitespace yes \ - directory no \ - iis_backslash no \ - u_encode yes \ - ascii yes \ - chunk_length 500000 \ - bare_byte yes \ - double_decode yes \ - iis_unicode yes \ - iis_delimiter yes \ - multi_slash no - -################## - # -# Other preprocs # - # -################## - -preprocessor rpc_decode: 111 32770 32771 32772 32773 32774 32775 32776 32777 32778 32779 -preprocessor bo - -##################### - # -# ftp preprocessor # - # -##################### - -preprocessor ftp_telnet: global \ -inspection_type stateless - -preprocessor ftp_telnet_protocol: telnet \ - normalize \ - ayt_attack_thresh 200 - -preprocessor ftp_telnet_protocol: \ - ftp server default \ - def_max_param_len 100 \ - ports { 21 } \ - ftp_cmds { USER PASS ACCT CWD SDUP SMNT QUIT REIN PORT PASV TYPE STRU MODE } \ - ftp_cmds { RETR STOR STOU APPE ALLO REST RNFR RNTO ABOR DELE RMD MKD PWD } \ - ftp_cmds { LIST NLST SITE SYST STAT HELP NOOP } \ - ftp_cmds { AUTH ADAT PROT PBSZ CONF ENC } \ - ftp_cmds { FEAT CEL CMD MACB } \ - ftp_cmds { MDTM REST SIZE MLST MLSD } \ - ftp_cmds { XPWD XCWD XCUP XMKD XRMD TEST CLNT } \ - alt_max_param_len 0 { CDUP QUIT REIN PASV STOU ABOR PWD SYST NOOP } \ - alt_max_param_len 100 { MDTM CEL XCWD SITE USER PASS REST DELE RMD SYST TEST STAT MACB EPSV CLNT LPRT } \ - alt_max_param_len 200 { XMKD NLST ALLO STOU APPE RETR STOR CMD RNFR HELP } \ - alt_max_param_len 256 { RNTO CWD } \ - alt_max_param_len 400 { PORT } \ - alt_max_param_len 512 { SIZE } \ - chk_str_fmt { USER PASS ACCT CWD SDUP SMNT PORT TYPE STRU MODE } \ - chk_str_fmt { RETR STOR STOU APPE ALLO REST RNFR RNTO DELE RMD MKD } \ - chk_str_fmt { LIST NLST SITE SYST STAT HELP } \ - chk_str_fmt { AUTH ADAT PROT PBSZ CONF ENC } \ - chk_str_fmt { FEAT CEL CMD } \ - chk_str_fmt { MDTM REST SIZE MLST MLSD } \ - chk_str_fmt { XPWD XCWD XCUP XMKD XRMD TEST CLNT } \ - cmd_validity MODE < char ASBCZ > \ - cmd_validity STRU < char FRP > \ - cmd_validity ALLO < int [ char R int ] > \ - cmd_validity TYPE < { char AE [ char NTC ] | char I | char L [ number ] } > \ - cmd_validity MDTM < [ date nnnnnnnnnnnnnn[.n[n[n]]] ] string > \ - cmd_validity PORT < host_port > - -preprocessor ftp_telnet_protocol: ftp client default \ - max_resp_len 256 \ - bounce yes \ - telnet_cmds yes - -##################### - # -# SMTP preprocessor # - # -##################### - -preprocessor SMTP: \ - ports { 25 465 691 } \ - inspection_type stateful \ - normalize cmds \ - valid_cmds { MAIL RCPT HELP HELO ETRN EHLO EXPN VRFY ATRN SIZE BDAT DEBUG EMAL ESAM ESND ESOM EVFY IDENT NOOP RSET SEND SAML SOML AUTH TURN ETRN PIPELINING \ -CHUNKING DATA DSN RSET QUIT ONEX QUEU STARTTLS TICK TIME TURNME VERB X-EXPS X-LINK2STATE XADR XAUTH XCIR XEXCH50 XGEN XLICENSE XQUEU XSTA XTRN XUSR } \ - normalize_cmds { MAIL RCPT HELP HELO ETRN EHLO EXPN VRFY ATRN SIZE BDAT DEBUG EMAL ESAM ESND ESOM EVFY IDENT NOOP RSET SEND SAML SOML AUTH TURN ETRN \ -PIPELINING CHUNKING DATA DSN RSET QUIT ONEX QUEU STARTTLS TICK TIME TURNME VERB X-EXPS X-LINK2STATE XADR XAUTH XCIR XEXCH50 XGEN XLICENSE XQUEU XSTA XTRN XUSR } \ - max_header_line_len 1000 \ - max_response_line_len 512 \ - alt_max_command_line_len 260 { MAIL } \ - alt_max_command_line_len 300 { RCPT } \ - alt_max_command_line_len 500 { HELP HELO ETRN EHLO } \ - alt_max_command_line_len 255 { EXPN VRFY ATRN SIZE BDAT DEBUG EMAL ESAM ESND ESOM EVFY IDENT NOOP RSET } \ - alt_max_command_line_len 246 { SEND SAML SOML AUTH TURN ETRN PIPELINING CHUNKING DATA DSN RSET QUIT ONEX } \ - alt_max_command_line_len 246 { QUEU STARTTLS TICK TIME TURNME VERB X-EXPS X-LINK2STATE XADR } \ - alt_max_command_line_len 246 { XAUTH XCIR XEXCH50 XGEN XLICENSE XQUEU XSTA XTRN XUSR } \ - xlink2state { enable } - -################ - # -# sf Portscan # - # -################ - -preprocessor sfportscan: scan_type { all } \ - proto { all } \ - memcap { 10000000 } \ - sense_level { medium } \ - ignore_scanners { \$HOME_NET } - -############################ - # -# OLD # -# preprocessor dcerpc: \ # -# autodetect \ # -# max_frag_size 3000 \ # -# memcap 100000 # - # -############################ - -############### - # -# NEW # -# DCE/RPC 2 # - # -############### - -preprocessor dcerpc2: memcap 102400, events [smb, co, cl] -preprocessor dcerpc2_server: default, policy WinXP, \ - detect [smb [139,445], tcp 135, udp 135, rpc-over-http-server 593], \ - autodetect [tcp 1025:, udp 1025:, rpc-over-http-server 1025:], \ - smb_max_chain 3 - -#################### - # -# DNS preprocessor # - # -#################### - -preprocessor dns: \ - ports { 53 } \ - enable_rdata_overflow - -############################## - # -# NEW # -# Ignore SSL and Encryption # - # -############################## - -preprocessor ssl: ports { 443 465 563 636 989 992 993 994 995 }, trustservers, noinspect_encrypted - -##################### - # -# Snort Output Logs # - # -##################### - -$snortalertlogtype_type -$alertsystemlog_type -$tcpdumplog_type -$snortmysqllog_info_chk -$snortunifiedlog_type -$spoink_type - -################# - # -# Misc Includes # - # -################# - -include /usr/local/etc/snort/reference.config -include /usr/local/etc/snort/classification.config -include /usr/local/etc/snort/threshold.conf - -# Snort user pass through configuration -{$snort_config_pass_thru} - -################### - # -# Rules Selection # - # -################### - -{$selected_rules_sections} - -EOD; - - return $snort_conf_text; -} - -/* check downloaded text from snort.org to make sure that an error did not occur - * for example, if you are not a premium subscriber you can only download rules - * so often, etc. - */ -function check_for_common_errors($filename) { - global $snort_filename, $snort_filename_md5, $console_mode; - ob_flush(); - $contents = file_get_contents($filename); - if(stristr($contents, "You don't have permission")) { - if(!$console_mode) { - update_all_status("An error occured while downloading {$filename}."); - hide_progress_bar_status(); - } else { - log_error("An error occured. Scroll down to inspect it's contents."); - echo "An error occured. Scroll down to inspect it's contents."; - } - if(!$console_mode) { - update_output_window(strip_tags("$contents")); - } else { - $contents = strip_tags($contents); - log_error("Error downloading snort rules: {$contents}"); - echo "Error downloading snort rules: {$contents}"; - } - scroll_down_to_bottom_of_page(); - exit; - } -} - -/* force browser to scroll all the way down */ -function scroll_down_to_bottom_of_page() { - global $snort_filename, $console_mode; - ob_flush(); - if(!$console_mode) - echo "\n<script type=\"text/javascript\">parent.scrollTo(0,1500);\n</script>"; -} - -/* ensure downloaded file looks sane */ -function verify_downloaded_file($filename) { - global $snort_filename, $snort_filename_md5, $console_mode; - ob_flush(); - if(filesize($filename)<9500) { - if(!$console_mode) { - update_all_status("Checking {$filename}..."); - check_for_common_errors($filename); - } - } - update_all_status("Verifying {$filename}..."); - if(!file_exists($filename)) { - if(!$console_mode) { - update_all_status("Could not fetch snort rules ({$filename}). Check oinkid key and dns and try again."); - hide_progress_bar_status(); - } else { - log_error("Could not fetch snort rules ({$filename}). Check oinkid key and dns and try again."); - echo "Could not fetch snort rules ({$filename}). Check oinkid key and dns and try again."; - } - exit; - } - update_all_status("Verifyied {$filename}."); -} - -/* extract rules */ -function extract_snort_rules_md5($tmpfname) { - global $snort_filename, $snort_filename_md5, $console_mode; - ob_flush(); - if(!$console_mode) { - $static_output = gettext("Extracting snort rules..."); - update_all_status($static_output); - } - if(!is_dir("/usr/local/etc/snort/rules/")) - mkdir("/usr/local/etc/snort/rules/"); - $cmd = "/usr/bin/tar xzf {$tmpfname}/{$snort_filename} -C /usr/local/etc/snort/ rules/"; - $handle = popen("{$cmd} 2>&1", 'r'); - while(!feof($handle)) { - $buffer = fgets($handle); - update_output_window($buffer); - } - pclose($handle); - - if(!$console_mode) { - $static_output = gettext("Snort rules extracted."); - update_all_status($static_output); - } else { - log_error("Snort rules extracted."); - echo "Snort rules extracted."; - } -} - -/* verify MD5 against downloaded item */ -function verify_snort_rules_md5($tmpfname) { - global $snort_filename, $snort_filename_md5, $console_mode; - ob_flush(); - if(!$console_mode) { - $static_output = gettext("Verifying md5 signature..."); - update_all_status($static_output); - } - - $md555 = file_get_contents("{$tmpfname}/{$snort_filename_md5}"); - $md5 = `/bin/echo "{$md555}" | /usr/bin/awk '{ print $4 }'`; - $file_md5_ondisk = `/sbin/md5 {$tmpfname}/{$snort_filename} | /usr/bin/awk '{ print $4 }'`; - if($md5 == $file_md5_ondisk) { - if(!$console_mode) { - $static_output = gettext("snort rules: md5 signature of rules mismatch."); - update_all_status($static_output); - hide_progress_bar_status(); - } else { - log_error("snort rules: md5 signature of rules mismatch."); - echo "snort rules: md5 signature of rules mismatch."; - } - exit; - } -} - -/* hide progress bar */ -function hide_progress_bar_status() { - global $snort_filename, $snort_filename_md5, $console_mode; - ob_flush(); - if(!$console_mode) - echo "\n<script type=\"text/javascript\">document.progressbar.style.visibility='hidden';\n</script>"; -} - -/* unhide progress bar */ -function unhide_progress_bar_status() { - global $snort_filename, $snort_filename_md5, $console_mode; - ob_flush(); - if(!$console_mode) - echo "\n<script type=\"text/javascript\">document.progressbar.style.visibility='visible';\n</script>"; -} - -/* update both top and bottom text box during an operation */ -function update_all_status($status) { - global $snort_filename, $snort_filename_md5, $console_mode; - ob_flush(); - if(!$console_mode) { - update_status($status); - update_output_window($status); - } -} - -/* obtain alert description for an ip address */ -function get_snort_alert($ip) { - global $snort_alert_file_split, $snort_config; - if(!file_exists("/var/log/snort/alert")) - return; - if(!$snort_config) - $snort_config = read_snort_config_cache(); - if($snort_config[$ip]) - return $snort_config[$ip]; - if(!$snort_alert_file_split) - $snort_alert_file_split = split("\n", file_get_contents("/var/log/snort/alert")); - foreach($snort_alert_file_split as $fileline) { - if (preg_match("/\[\*\*\] (\[.*\]) (.*) (\[\*\*\])/", $fileline, $matches)) - $alert_title = $matches[2]; - if (preg_match("/(\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b)/", $fileline, $matches)) - $alert_ip = $matches[0]; - if($alert_ip == $ip) { - if(!$snort_config[$ip]) - $snort_config[$ip] = $alert_title; - return $alert_title; - } - } - return "n/a"; -} - -function make_clickable($buffer) { - global $config, $g; - /* if clickable urls is disabled, simply return buffer back to caller */ - $clickablalerteurls = $config['installedpackages']['snort']['config'][0]['oinkmastercode']; - if(!$clickablalerteurls) - return $buffer; - $buffer = eregi_replace("(^|[ \n\r\t])((http(s?)://)(www\.)?([a-z0-9_-]+(\.[a-z0-9_-]+)+)(/[^/ \n\r]*)*)","\\1<a href=\"\\2\" target=\"_blank\">\\2</a>", $buffer); - $buffer = eregi_replace("(^|[ \n\r\t])((ftp://)(www\.)?([a-z0-9_-]+(\.[a-z0-9_-]+)+)(/[^/ \n\r]*)*)","\\1<a href=\"\\2\" target=\"_blank\">\\2</a>", $buffer); - $buffer = eregi_replace("([a-z_-][a-z0-9\._-]*@[a-z0-9_-]+(\.[a-z0-9_-]+)+)","<a href=\"mailto:\\1\">\\1</a>", $buffer); - $buffer = eregi_replace("(^|[ \n\r\t])(www\.([a-z0-9_-]+(\.[a-z0-9_-]+)+)(/[^/ \n\r]*)*)","\\1<a href=\"http://\\2\" target=\"_blank\">\\2</a>", $buffer); - $buffer = eregi_replace("(^|[ \n\r\t])(ftp\.([a-z0-9_-]+(\.[a-z0-9_-]+)+)(/[^/ \n\r]*)*)","\\1<a href=\"ftp://\\2\" target=\"_blank\">\\2</a>", $buffer); - - return $buffer; -} - -function read_snort_config_cache() { - global $g, $config, $snort_config; - if($snort_config) - return $snort_config; - if(file_exists($g['tmp_path'] . '/snort_config.cache')) { - $snort_config = unserialize(file_get_contents($g['tmp_path'] . '/snort_config.cache')); - return $snort_config; - } - return; -} - -function write_snort_config_cache($snort_config) { - global $g, $config; - conf_mount_rw(); - $configcache = fopen($g['tmp_path'] . '/snort_config.cache', "w"); - if(!$configcache) { - log_error("Could not open {$g['tmp_path']}/snort_config.cache for writing."); - return false; - } - fwrite($configcache, serialize($snort_config)); - fclose($configcache); - conf_mount_ro(); - return true; -} - -function snort_advanced() { - global $g, $config; - sync_package_snort(); -} - -function snort_define_servers() { - global $g, $config; - sync_package_snort(); -} - -?> +<?php
+/* $Id$ */
+/*
+ snort.inc
+ Copyright (C) 2006 Scott Ullrich
+ part of pfSense
+ 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("pfsense-utils.inc");
+
+// Needed on 2.0 because of get_vpns_list()
+require_once("filter.inc");
+
+/* Allow additional execution time 0 = no limit. */
+ini_set('max_execution_time', '9999');
+ini_set('max_input_time', '9999');
+
+/* define oinkid */
+if($config['installedpackages']['snort'])
+ $oinkid = $config['installedpackages']['snort']['config'][0]['oinkmastercode'];
+
+function sync_package_snort_reinstall()
+{
+ global $config;
+ if(!$config['installedpackages']['snort'])
+ return;
+
+ /* create snort configuration file */
+ create_snort_conf();
+
+ /* start snort service */
+ start_service("snort");
+}
+
+function sync_package_snort_install() {
+
+ /* create a few directories and ensure the sample files are in place */
+ exec("/bin/mkdir -p /usr/local/etc/snort");
+ exec("/bin/mkdir -p /var/log/snort");
+ exec("/bin/mkdir -p /usr/local/etc/snort/rules");
+ exec("/bin/cp /usr/local/etc/snort/unicode.map-sample /usr/local/etc/snort/unicode.map");
+ exec("/bin/cp /usr/local/etc/snort/classification.config-sample /usr/local/etc/snort/classification.config");
+ exec("/bin/cp /usr/local/etc/snort/gen-msg.map-sample /usr/local/etc/snort/gen-msg.map");
+ exec("/bin/cp /usr/local/etc/snort/generators-sample /usr/local/etc/snort/generators");
+ exec("/bin/cp /usr/local/etc/snort/reference.config-sample /usr/local/etc/snort/reference.config");
+ exec("/bin/cp /usr/local/etc/snort/sid-msg.map-sample /usr/local/etc/snort/sid-msg.map");
+ exec("/bin/cp /usr/local/etc/snort/sid-sample /usr/local/etc/snort/sid");
+ exec("/bin/cp /usr/local/etc/snort/threshold.conf-sample /usr/local/etc/snort/threshold.conf");
+ exec("/bin/cp /usr/local/etc/snort/unicode.map-sample /usr/local/etc/snort/unicode.map");
+ exec("/usr/bin/touch /usr/local/etc/snort/rules/local.rules");
+ exec("/bin/rm -f /usr/local/etc/rc.d/snort");
+}
+
+function sync_package_snort()
+{
+ global $config, $g;
+
+ mwexec("mkdir -p /var/log/snort/");
+
+ if(!file_exists("/var/log/snort/alert"))
+ touch("/var/log/snort/alert");
+
+ /* snort -> advanced features */
+ $bpfbufsize = $config['installedpackages']['snortadvanced']['config'][0]['bpfbufsize'];
+ $bpfmaxbufsize = $config['installedpackages']['snortadvanced']['config'][0]['bpfmaxbufsize'];
+ $bpfmaxinsns = $config['installedpackages']['snortadvanced']['config'][0]['bpfmaxinsns'];
+
+ /* set the snort performance model */
+ if($config['installedpackages']['snort']['config'][0]['performance'])
+ $snort_performance = $config['installedpackages']['snort']['config'][0]['performance'];
+ else
+ $snort_performance = "ac-bnfa";
+
+ conf_mount_rw();
+ /* create a few directories and ensure the sample files are in place */
+ exec("/bin/mkdir -p /usr/local/etc/snort");
+ exec("/bin/mkdir -p /var/log/snort");
+ exec("/bin/mkdir -p /usr/local/etc/snort/rules");
+ exec("/bin/cp /usr/local/etc/snort/unicode.map-sample /usr/local/etc/snort/unicode.map");
+ exec("/bin/cp /usr/local/etc/snort/classification.config-sample /usr/local/etc/snort/classification.config");
+ exec("/bin/cp /usr/local/etc/snort/gen-msg.map-sample /usr/local/etc/snort/gen-msg.map");
+ exec("/bin/cp /usr/local/etc/snort/generators-sample /usr/local/etc/snort/generators");
+ exec("/bin/cp /usr/local/etc/snort/reference.config-sample /usr/local/etc/snort/reference.config");
+ exec("/bin/cp /usr/local/etc/snort/sid-msg.map-sample /usr/local/etc/snort/sid-msg.map");
+ exec("/bin/cp /usr/local/etc/snort/sid-sample /usr/local/etc/snort/sid");
+ exec("/bin/cp /usr/local/etc/snort/threshold.conf-sample /usr/local/etc/snort/threshold.conf");
+ exec("/bin/cp /usr/local/etc/snort/unicode.map-sample /usr/local/etc/snort/unicode.map");
+ exec("/usr/bin/touch /usr/local/etc/snort/rules/local.rules");
+ exec("/bin/rm -f /usr/local/etc/rc.d/snort");
+
+
+ $first = 0;
+ $snortInterfaces = array(); /* -gtm */
+
+ $if_list = $config['installedpackages']['snort']['config'][0]['iface_array'];
+ $if_array = split(',', $if_list);
+ //print_r($if_array);
+ if($if_array) {
+ foreach($if_array as $iface) {
+ $if = convert_friendly_interface_to_real_interface_name($iface);
+
+ if($config['interfaces'][$iface]['ipaddr'] == "pppoe") {
+ $if = "ng0";
+ }
+
+ /* build a list of user specified interfaces -gtm */
+ if($if){
+ array_push($snortInterfaces, $if);
+ $first = 1;
+ }
+ }
+
+ if (count($snortInterfaces) < 1) {
+ log_error("Snort will not start. You must select an interface for it to listen on.");
+ return;
+ }
+ }
+ //print_r($snortInterfaces);
+
+ /* create log directory */
+ $start = "/bin/mkdir -p /var/log/snort\n";
+
+ /* snort advanced features - bpf tuning */
+ if($bpfbufsize)
+ $start .= "sysctl net.bpf.bufsize={$bpfbufsize}\n";
+ if($bpfmaxbufsize)
+ $start .= "sysctl net.bpf.maxbufsize={$bpfmaxbufsize}\n";
+ if($bpfmaxinsns)
+ $start .= "sysctl net.bpf.maxinsns={$bpfmaxinsns}\n";
+
+ /* go ahead and issue bpf changes */
+ if($bpfbufsize)
+ mwexec_bg("sysctl net.bpf.bufsize={$bpfbufsize}");
+ if($bpfmaxbufsize)
+ mwexec_bg("sysctl net.bpf.maxbufsize={$bpfmaxbufsize}");
+ if($bpfmaxinsns)
+ mwexec_bg("sysctl net.bpf.maxinsns={$bpfmaxinsns}");
+
+ /* always stop snort2c before starting snort -gtm */
+ $start .= "/usr/bin/killall barnyard2\n";
+
+ /* start a snort process for each interface -gtm */
+ /* Note the sleep delay. Seems to help getting mult interfaces to start -gtm */
+ /* snort start options are; config file, log file, demon, interface, packet flow, alert type, quiet */
+ /* TODO; get snort to start under nologin shell */
+ foreach($snortInterfaces as $snortIf)
+ {
+ $start .= "sleep 8\n";
+ $start .= "snort -c /usr/local/etc/snort/snort.conf -l /var/log/snort -D -i {$snortIf} -q\n";
+
+ /* define snortbarnyardlog_chk */
+ $snortbarnyardlog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['snortbarnyardlog'];
+ if ($snortbarnyardlog_info_chk == on)
+ $start .= "\nsleep 4;barnyard2 -c /usr/local/etc/barnyard2.conf -d /var/log/snort -f snort.u2 -w /usr/local/etc/snort/barnyard2.waldo -D -q\n";
+ }
+
+// /* if block offenders is checked, start snort2c */
+// if($_POST['blockoffenders']) {
+// $start .= "\nsleep 8\n";
+// $start .= "snort2c -w /var/db/whitelist -a /var/log/snort/alert\n";
+// }
+
+ $if_snort_pid = "\nif ls /tmp/snort.sh.pid > /dev/null\nthen\n echo \"snort.sh is running\"\n exit 0\nelse\n echo \"snort.sh is not running\"\nfi\n";
+ $echo_snort_sh_pid = "\necho \"snort.sh run\" > /tmp/snort.sh.pid\n";
+ $echo_snort_sh_startup_log = "\necho \"snort.sh run\" >> /tmp/snort.sh_startup.log\n";
+ $sample_before = "\nBEFORE_MEM=`top | grep Free | grep Wired | awk '{print \$10}'`\n";
+ $sample_after = "\nAFTER_MEM=`top | grep Free | grep Wired | awk '{print \$10}'`\n";
+ $sleep_before_final = "\necho \"Sleeping before final memory sampling...\"\nsleep 17";
+ $total_free_after = "\nTOTAL_USAGE=`top | grep snort | grep -v grep | awk '{ print \$6 }'`\n";
+ $echo_usage = "\necho \"Ram free BEFORE starting Snort: \${BEFORE_MEM} -- Ram free AFTER starting Snort: \${AFTER_MEM}\" -- Mode {$snort_performance} -- Snort memory usage: \$TOTAL_USAGE | logger -p daemon.info -i -t SnortStartup\n";
+ $rm_snort_sh_pid = "\nrm /tmp/snort.sh.pid\n";
+
+ /* write out rc.d start/stop file */
+ write_rcfile(array(
+ "file" => "snort.sh",
+ "start" => "{$if_snort_pid}{$echo_snort_sh_pid}{$echo_snort_sh_startup_log}{$sample_before}{$start}{$sleep_before_final}{$sample_after}{$echo_usage}{$rm_snort_sh_pid}",
+ "stop" => "/usr/bin/killall snort; killall snort2c"
+ )
+ );
+
+ /* create snort configuration file */
+ create_snort_conf();
+
+/* create barnyard2 configuration file */
+$snortbarnyardlog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['snortbarnyardlog'];
+if ($snortbarnyardlog_info_chk == on)
+ create_barnyard2_conf();
+
+
+ /* start snort service */
+ conf_mount_ro();
+ start_service("snort");
+}
+
+/* open barnyard2.conf for writing */
+function create_barnyard2_conf() {
+ global $bconfig, $bg;
+ /* write out barnyard2_conf */
+ $barnyard2_conf_text = generate_barnyard2_conf();
+// conf_mount_rw();
+ $bconf = fopen("/usr/local/etc/barnyard2.conf", "w");
+ if(!$bconf) {
+ log_error("Could not open /usr/local/etc/barnyard2.conf for writing.");
+ exit;
+ }
+ fwrite($bconf, $barnyard2_conf_text);
+ fclose($bconf);
+// conf_mount_ro();
+}
+
+/* open barnyard2.conf for writing" */
+function generate_barnyard2_conf() {
+
+ global $config, $g;
+ conf_mount_rw();
+
+/* define snortbarnyardlog */
+$snortbarnyardlog_database_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['snortbarnyardlog_database'];
+
+$barnyard2_conf_text = <<<EOD
+
+ Copyright (C) 2006 Scott Ullrich
+ part of pfSense
+ All rights reserved.
+
+# set the appropriate paths to the file(s) your Snort process is using
+config reference-map: /usr/local/etc/snort/reference.config
+config class-map: /usr/local/etc/snort/classification.config
+config gen-msg-map: /usr/local/etc/snort/gen-msg.map
+config sid-msg-map: /usr/local/etc/snort/sid-msg.map
+
+config hostname: pfsense.local
+config interface: vr0
+
+# Step 2: setup the input plugins
+input unified2
+
+# database: log to a variety of databases
+# output database: log, mysql, user=snort password=snort123 dbname=snort host=192.168.1.22
+
+$snortbarnyardlog_database_info_chk
+
+EOD;
+
+ return $barnyard2_conf_text;
+
+}
+
+
+function create_snort_conf() {
+ global $config, $g;
+ /* write out snort.conf */
+ $snort_conf_text = generate_snort_conf();
+ conf_mount_rw();
+ $conf = fopen("/usr/local/etc/snort/snort.conf", "w");
+ if(!$conf) {
+ log_error("Could not open /usr/local/etc/snort/snort.conf for writing.");
+ exit;
+ }
+ fwrite($conf, $snort_conf_text);
+ fclose($conf);
+ conf_mount_ro();
+}
+
+function snort_deinstall() {
+// $text_ww = "*/60\t* \t 1\t *\t *\t root\t /usr/bin/nice -n20 /usr/local/pkg/snort_check_for_rule_updates.php";
+// $filenamea = "/etc/crontab";
+ /* remove auto rules update helper */
+// remove_text_from_file($filenamea, $text_ww);
+ /* remove custom sysctl */
+ remove_text_from_file("/etc/sysctl.conf", "sysctl net.bpf.bufsize=20480");
+ /* decrease bpf buffers back to 4096, from 20480 */
+ exec("/sbin/sysctl net.bpf.bufsize=4096");
+ exec("/usr/bin/killall snort");
+ sleep(5);
+ exec("/usr/bin/killall -9 snort");
+ exec("rm -f /usr/local/etc/rc.d/snort*");
+ exec("rm -rf /usr/local/etc/snort*");
+ exec("cd /var/db/pkg && pkg_delete `ls | grep snort`");
+ exec("cd /var/db/pkg && pkg_delete `ls | grep mysql-client`");
+ exec("cd /var/db/pkg && pkg_delete `ls | grep libdnet`");
+ exec("/usr/bin/killall -9 snort");
+ exec("/usr/bin/killall snort");
+}
+
+function generate_snort_conf() {
+
+ global $config, $g;
+ conf_mount_rw();
+ /* obtain external interface */
+ /* XXX: make multi wan friendly */
+ $snort_ext_int = $config['installedpackages']['snort']['config'][0]['iface_array'][0];
+
+ $snort_config_pass_thru = $config['installedpackages']['snortadvanced']['config'][0]['configpassthru'];
+
+/* define snortalertlogtype */
+$snortalertlogtype = $config['installedpackages']['snortadvanced']['config'][0]['snortalertlogtype'];
+if ($snortalertlogtype == fast)
+ $snortalertlogtype_type = "output alert_fast: alert";
+else
+ $snortalertlogtype_type = "output alert_full: alert";
+
+/* define alertsystemlog */
+$alertsystemlog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['alertsystemlog'];
+if ($alertsystemlog_info_chk == on)
+ $alertsystemlog_type = "output alert_syslog: log_alert";
+
+/* define tcpdumplog */
+$tcpdumplog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['tcpdumplog'];
+if ($tcpdumplog_info_chk == on)
+ $tcpdumplog_type = "output log_tcpdump: snorttcpd.log";
+
+/* define snortbarnyardlog_chk */
+$snortbarnyardlog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['snortbarnyardlog'];
+if ($snortbarnyardlog_info_chk == on)
+ $snortbarnyardlog_type = "barnyard2 -c /usr/local/etc/barnyard2.conf -d /var/log/snort -f snort.u2 -w /usr/local/etc/snort/barnyard2.waldo -D";
+
+/* define snortunifiedlog */
+$snortunifiedlog_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['snortunifiedlog'];
+if ($snortunifiedlog_info_chk == on)
+ $snortunifiedlog_type = "output unified2: filename snort.u2, limit 128";
+
+/* define spoink */
+$spoink_info_chk = $config['installedpackages']['snort']['config'][0]['blockoffenders7'];
+if ($spoink_info_chk == on)
+ $spoink_type = "output alert_pf: /var/db/whitelist,snort2c";
+
+/* define servers and ports snortdefservers */
+
+/* def DNS_SERVSERS */
+$def_dns_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_dns_servers'];
+if ($def_dns_servers_info_chk == "")
+ $def_dns_servers_type = "\$HOME_NET";
+else
+ $def_dns_servers_type = "$def_dns_servers_info_chk";
+
+/* def DNS_PORTS */
+$def_dns_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_dns_ports'];
+if ($def_dns_ports_info_chk == "")
+ $def_dns_ports_type = "53";
+else
+ $def_dns_ports_type = "$def_dns_ports_info_chk";
+
+/* def SMTP_SERVSERS */
+$def_smtp_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_smtp_servers'];
+if ($def_smtp_servers_info_chk == "")
+ $def_smtp_servers_type = "\$HOME_NET";
+else
+ $def_smtp_servers_type = "$def_smtp_servers_info_chk";
+
+/* def SMTP_PORTS */
+$def_smtp_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_smtp_ports'];
+if ($def_smtp_ports_info_chk == "")
+ $def_smtp_ports_type = "25";
+else
+ $def_smtp_ports_type = "$def_smtp_ports_info_chk";
+
+/* def MAIL_PORTS */
+$def_mail_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_mail_ports'];
+if ($def_mail_ports_info_chk == "")
+ $def_mail_ports_type = "25,143,465,691";
+else
+ $def_mail_ports_type = "$def_mail_ports_info_chk";
+
+/* def HTTP_SERVSERS */
+$def_http_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_http_servers'];
+if ($def_http_servers_info_chk == "")
+ $def_http_servers_type = "\$HOME_NET";
+else
+ $def_http_servers_type = "$def_http_servers_info_chk";
+
+/* def WWW_SERVSERS */
+$def_www_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_www_servers'];
+if ($def_www_servers_info_chk == "")
+ $def_www_servers_type = "\$HOME_NET";
+else
+ $def_www_servers_type = "$def_www_servers_info_chk";
+
+/* def HTTP_PORTS */
+$def_http_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_http_ports'];
+if ($def_http_ports_info_chk == "")
+ $def_http_ports_type = "80";
+else
+ $def_http_ports_type = "$def_http_ports_info_chk";
+
+/* def SQL_SERVSERS */
+$def_sql_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_sql_servers'];
+if ($def_sql_servers_info_chk == "")
+ $def_sql_servers_type = "\$HOME_NET";
+else
+ $def_sql_servers_type = "$def_sql_servers_info_chk";
+
+/* def ORACLE_PORTS */
+$def_oracle_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_oracle_ports'];
+if ($def_oracle_ports_info_chk == "")
+ $def_oracle_ports_type = "1521";
+else
+ $def_oracle_ports_type = "$def_oracle_ports_info_chk";
+
+/* def MSSQL_PORTS */
+$def_mssql_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_mssql_ports'];
+if ($def_mssql_ports_info_chk == "")
+ $def_mssql_ports_type = "1433";
+else
+ $def_mssql_ports_type = "$def_mssql_ports_info_chk";
+
+/* def TELNET_SERVSERS */
+$def_telnet_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_telnet_servers'];
+if ($def_telnet_servers_info_chk == "")
+ $def_telnet_servers_type = "\$HOME_NET";
+else
+ $def_telnet_servers_type = "$def_telnet_servers_info_chk";
+
+/* def TELNET_PORTS */
+$def_telnet_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_telnet_ports'];
+if ($def_telnet_ports_info_chk == "")
+ $def_telnet_ports_type = "23";
+else
+ $def_telnet_ports_type = "$def_telnet_ports_info_chk";
+
+/* def SNMP_SERVSERS */
+$def_snmp_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_snmp_servers'];
+if ($def_snmp_servers_info_chk == "")
+ $def_snmp_servers_type = "\$HOME_NET";
+else
+ $def_snmp_servers_type = "$def_snmp_servers_info_chk";
+
+/* def SNMP_PORTS */
+$def_snmp_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_snmp_ports'];
+if ($def_snmp_ports_info_chk == "")
+ $def_snmp_ports_type = "161";
+else
+ $def_snmp_ports_type = "$def_snmp_ports_info_chk";
+
+/* def FTP_SERVSERS */
+$def_ftp_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_ftp_servers'];
+if ($def_ftp_servers_info_chk == "")
+ $def_ftp_servers_type = "\$HOME_NET";
+else
+ $def_ftp_servers_type = "$def_ftp_servers_info_chk";
+
+/* def FTP_PORTS */
+$def_ftp_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_ftp_ports'];
+if ($def_ftp_ports_info_chk == "")
+ $def_ftp_ports_type = "21";
+else
+ $def_ftp_ports_type = "$def_ftp_ports_info_chk";
+
+/* def SSH_SERVSERS */
+$def_ssh_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_ssh_servers'];
+if ($def_ssh_servers_info_chk == "")
+ $def_ssh_servers_type = "\$HOME_NET";
+else
+ $def_ssh_servers_type = "$def_ssh_servers_info_chk";
+
+/* if user has defined a custom ssh port, use it */
+if($config['system']['ssh']['port'])
+ $ssh_port = $config['system']['ssh']['port'];
+else
+ $ssh_port = "22";
+
+/* def SSH_PORTS */
+$def_ssh_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_ssh_ports'];
+if ($def_ssh_ports_info_chk == "")
+ $def_ssh_ports_type = "{$ssh_port}";
+else
+ $def_ssh_ports_type = "$def_ssh_ports_info_chk";
+
+/* def POP_SERVSERS */
+$def_pop_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_pop_servers'];
+if ($def_pop_servers_info_chk == "")
+ $def_pop_servers_type = "\$HOME_NET";
+else
+ $def_pop_servers_type = "$def_pop_servers_info_chk";
+
+/* def POP2_PORTS */
+$def_pop2_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_pop2_ports'];
+if ($def_pop2_ports_info_chk == "")
+ $def_pop2_ports_type = "109";
+else
+ $def_pop2_ports_type = "$def_pop2_ports_info_chk";
+
+/* def POP3_PORTS */
+$def_pop3_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_pop3_ports'];
+if ($def_pop3_ports_info_chk == "")
+ $def_pop3_ports_type = "110";
+else
+ $def_pop3_ports_type = "$def_pop3_ports_info_chk";
+
+/* def IMAP_SERVSERS */
+$def_imap_servers_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_imap_servers'];
+if ($def_imap_servers_info_chk == "")
+ $def_imap_servers_type = "\$HOME_NET";
+else
+ $def_imap_servers_type = "$def_imap_servers_info_chk";
+
+/* def IMAP_PORTS */
+$def_imap_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_imap_ports'];
+if ($def_imap_ports_info_chk == "")
+ $def_imap_ports_type = "143";
+else
+ $def_imap_ports_type = "$def_imap_ports_info_chk";
+
+/* def SIP_PROXY_IP */
+$def_sip_proxy_ip_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_sip_proxy_ip'];
+if ($def_sip_proxy_ip_info_chk == "")
+ $def_sip_proxy_ip_type = "\$HOME_NET";
+else
+ $def_sip_proxy_ip_type = "$def_sip_proxy_ip_info_chk";
+
+/* def SIP_PROXY_PORTS */
+$def_sip_proxy_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_sip_proxy_ports'];
+if ($def_sip_proxy_ports_info_chk == "")
+ $def_sip_proxy_ports_type = "5060:5090,16384:32768";
+else
+ $def_sip_proxy_ports_type = "$def_sip_proxy_ports_info_chk";
+
+/* def AUTH_PORTS */
+$def_auth_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_auth_ports'];
+if ($def_auth_ports_info_chk == "")
+ $def_auth_ports_type = "113";
+else
+ $def_auth_ports_type = "$def_auth_ports_info_chk";
+
+/* def FINGER_PORTS */
+$def_finger_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_finger_ports'];
+if ($def_finger_ports_info_chk == "")
+ $def_finger_ports_type = "79";
+else
+ $def_finger_ports_type = "$def_finger_ports_info_chk";
+
+/* def IRC_PORTS */
+$def_irc_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_irc_ports'];
+if ($def_irc_ports_info_chk == "")
+ $def_irc_ports_type = "6665,6666,6667,6668,6669,7000";
+else
+ $def_irc_ports_type = "$def_irc_ports_info_chk";
+
+/* def NNTP_PORTS */
+$def_nntp_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_nntp_ports'];
+if ($def_nntp_ports_info_chk == "")
+ $def_nntp_ports_type = "119";
+else
+ $def_nntp_ports_type = "$def_nntp_ports_info_chk";
+
+/* def RLOGIN_PORTS */
+$def_rlogin_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_rlogin_ports'];
+if ($def_rlogin_ports_info_chk == "")
+ $def_rlogin_ports_type = "513";
+else
+ $def_rlogin_ports_type = "$def_rlogin_ports_info_chk";
+
+/* def RSH_PORTS */
+$def_rsh_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_rsh_ports'];
+if ($def_rsh_ports_info_chk == "")
+ $def_rsh_ports_type = "514";
+else
+ $def_rsh_ports_type = "$def_rsh_ports_info_chk";
+
+/* def SSL_PORTS */
+$def_ssl_ports_info_chk = $config['installedpackages']['snortdefservers']['config'][0]['def_ssl_ports'];
+if ($def_ssl_ports_info_chk == "")
+ $def_ssl_ports_type = "25,443,465,636,993,995";
+else
+ $def_ssl_ports_type = "$def_ssl_ports_info_chk";
+
+ /* add auto update scripts to /etc/crontab */
+// $text_ww = "*/60\t* \t 1\t *\t *\t root\t /usr/bin/nice -n20 /usr/local/pkg/snort_check_for_rule_updates.php";
+// $filenamea = "/etc/crontab";
+// remove_text_from_file($filenamea, $text_ww);
+// add_text_to_file($filenamea, $text_ww);
+// exec("killall -HUP cron"); */
+
+ /* should we install a automatic update crontab entry? */
+ $automaticrulesupdate = $config['installedpackages']['snort']['config'][0]['automaticrulesupdate'];
+
+ /* if user is on pppoe, we really want to use ng0 interface */
+ if($config['interfaces'][$snort_ext_int]['ipaddr'] == "pppoe")
+ $snort_ext_int = "ng0";
+
+ /* set the snort performance model */
+ if($config['installedpackages']['snort']['config'][0]['performance'])
+ $snort_performance = $config['installedpackages']['snort']['config'][0]['performance'];
+ else
+ $snort_performance = "ac-bnfa";
+
+ /* set the snort block hosts time */
+ $snort_rm_blocked_info_ck = $config['installedpackages']['snort']['config'][0]['rm_blocked'];
+ if ($snort_rm_blocked_info_ck == "never_b")
+ $snort_rm_blocked_false = "";
+ else
+ $snort_rm_blocked_false = "true";
+
+function snort_rm_blocked_install_cron($should_install) {
+ global $config, $g;
+
+ if ($g['booting']==true)
+ return;
+
+ $is_installed = false;
+
+ if(!$config['cron']['item'])
+ return;
+
+ $x=0;
+ foreach($config['cron']['item'] as $item) {
+ if (strstr($item['command'], "snort2c")) {
+ $is_installed = true;
+ break;
+ }
+ $x++;
+ }
+ $snort_rm_blocked_info_ck = $config['installedpackages']['snort']['config'][0]['rm_blocked'];
+ if ($snort_rm_blocked_info_ck == "1h_b") {
+ $snort_rm_blocked_min = "*";
+ $snort_rm_blocked_hr = "*/1";
+ $snort_rm_blocked_mday = "*";
+ $snort_rm_blocked_month = "*";
+ $snort_rm_blocked_wday = "*";
+ }
+ if ($snort_rm_blocked_info_ck == "3h_b") {
+ $snort_rm_blocked_min = "*";
+ $snort_rm_blocked_hr = "*/3";
+ $snort_rm_blocked_mday = "*";
+ $snort_rm_blocked_month = "*";
+ $snort_rm_blocked_wday = "*";
+ }
+ if ($snort_rm_blocked_info_ck == "6h_b") {
+ $snort_rm_blocked_min = "*";
+ $snort_rm_blocked_hr = "*/6";
+ $snort_rm_blocked_mday = "*";
+ $snort_rm_blocked_month = "*";
+ $snort_rm_blocked_wday = "*";
+ }
+ if ($snort_rm_blocked_info_ck == "12h_b") {
+ $snort_rm_blocked_min = "*";
+ $snort_rm_blocked_hr = "*/12";
+ $snort_rm_blocked_mday = "*";
+ $snort_rm_blocked_month = "*";
+ $snort_rm_blocked_wday = "*";
+ }
+ if ($snort_rm_blocked_info_ck == "1d_b") {
+ $snort_rm_blocked_min = "*";
+ $snort_rm_blocked_hr = "*";
+ $snort_rm_blocked_mday = "*/1";
+ $snort_rm_blocked_month = "*";
+ $snort_rm_blocked_wday = "*";
+ }
+ if ($snort_rm_blocked_info_ck == "4d_b") {
+ $snort_rm_blocked_min = "*";
+ $snort_rm_blocked_hr = "*";
+ $snort_rm_blocked_mday = "*/4";
+ $snort_rm_blocked_month = "*";
+ $snort_rm_blocked_wday = "*";
+ }
+ if ($snort_rm_blocked_info_ck == "7d_b") {
+ $snort_rm_blocked_min = "*";
+ $snort_rm_blocked_hr = "*";
+ $snort_rm_blocked_mday = "*/7";
+ $snort_rm_blocked_month = "*";
+ $snort_rm_blocked_wday = "*";
+ }
+ if ($snort_rm_blocked_info_ck == "28d_b") {
+ $snort_rm_blocked_min = "*";
+ $snort_rm_blocked_hr = "*";
+ $snort_rm_blocked_mday = "*/28";
+ $snort_rm_blocked_month = "*";
+ $snort_rm_blocked_wday = "*";
+ }
+ switch($should_install) {
+ case true:
+ if(!$is_installed) {
+ $cron_item = array();
+ $cron_item['minute'] = "$snort_rm_blocked_min";
+ $cron_item['hour'] = "$snort_rm_blocked_hr";
+ $cron_item['mday'] = "$snort_rm_blocked_mday";
+ $cron_item['month'] = "$snort_rm_blocked_month";
+ $cron_item['wday'] = "$snort_rm_blocked_wday";
+ $cron_item['who'] = "root";
+ $cron_item['command'] = "/usr/bin/nice -n20 /usr/local/sbin/expiretable -t 3600 snort2c";
+ $config['cron']['item'][] = $cron_item;
+ write_config("Installed 15 minute filter reload for Time Based Rules");
+ configure_cron();
+ }
+ break;
+ case false:
+ if($is_installed == true) {
+ if($x > 0) {
+ unset($config['cron']['item'][$x]);
+ write_config();
+ }
+ configure_cron();
+ }
+ break;
+ }
+}
+
+snort_rm_blocked_install_cron("");
+snort_rm_blocked_install_cron($snort_rm_blocked_false);
+
+
+ /* open snort2c's whitelist for writing */
+ $whitelist = fopen("/var/db/whitelist", "w");
+ if(!$whitelist) {
+ log_error("Could not open /var/db/whitelist for writing.");
+ return;
+ }
+
+ /* build an interface array list */
+ $int_array = array('lan');
+ for ($j = 1; isset ($config['interfaces']['opt' . $j]); $j++)
+ if(isset($config['interfaces']['opt' . $j]['enable']))
+ if(!$config['interfaces']['opt' . $j]['gateway'])
+ $int_array[] = "opt{$j}";
+
+ /* iterate through interface list and write out whitelist items
+ * and also compile a home_net list for snort.
+ */
+ foreach($int_array as $int) {
+ /* calculate interface subnet information */
+ $ifcfg = &$config['interfaces'][$int];
+ $subnet = gen_subnet($ifcfg['ipaddr'], $ifcfg['subnet']);
+ $subnetmask = gen_subnet_mask($ifcfg['subnet']);
+ if($subnet == "pppoe" or $subnet == "dhcp") {
+ $subnet = find_interface_ip("ng0");
+ if($subnet)
+ $home_net .= "{$subnet} ";
+ } else {
+ if ($subnet)
+ if($ifcfg['subnet'])
+ $home_net .= "{$subnet}/{$ifcfg['subnet']} ";
+ }
+ }
+
+ /* add all WAN ips to the whitelist */
+ $wan_if = get_real_wan_interface();
+ $ip = find_interface_ip($wan_if);
+ if($ip)
+ $home_net .= "{$ip} ";
+
+ /* Add Gateway on WAN interface to whitelist (For RRD graphs) */
+ $int = convert_friendly_interface_to_real_interface_name("WAN");
+ $gw = get_interface_gateway($int);
+ if($gw)
+ $home_net .= "{$gw} ";
+
+ /* Add DNS server for WAN interface to whitelist */
+ $dns_servers = get_dns_servers();
+ foreach($dns_servers as $dns) {
+ if($dns)
+ $home_net .= "{$dns} ";
+ }
+
+ /* Add loopback to whitelist (ftphelper) */
+ $home_net .= "127.0.0.1 ";
+
+ /* iterate all vips and add to whitelist */
+ if($config['virtualip'])
+ foreach($config['virtualip']['vip'] as $vip)
+ if($vip['subnet'])
+ $home_net .= $vip['subnet'] . " ";
+
+ if($config['installedpackages']['snortwhitelist'])
+ foreach($config['installedpackages']['snortwhitelist']['config'] as $snort)
+ if($snort['ip'])
+ $home_net .= $snort['ip'] . " ";
+
+ /* write out whitelist, convert spaces to carriage returns */
+ $whitelist_home_net = str_replace(" ", " ", $home_net);
+ $whitelist_home_net = str_replace(" ", "\n", $home_net);
+
+ /* make $home_net presentable to snort */
+ $home_net = trim($home_net);
+ $home_net = str_replace(" ", ",", $home_net);
+ $home_net = "[{$home_net}]";
+
+ /* foreach through whitelist, writing out to file */
+ $whitelist_split = split("\n", $whitelist_home_net);
+ foreach($whitelist_split as $wl)
+ if(trim($wl))
+ fwrite($whitelist, trim($wl) . "\n");
+
+ /* should we whitelist vpns? */
+ $whitelistvpns = $config['installedpackages']['snort']['config'][0]['whitelistvpns'];
+
+ /* grab a list of vpns and whitelist if user desires */
+ if($whitelistvpns) {
+ $vpns_list = get_vpns_list();
+ $whitelist_vpns = split(" ", $vpns_list);
+ foreach($whitelist_split as $wl)
+ if(trim($wl))
+ fwrite($whitelist, trim($wl) . "\n");
+ }
+
+ /* close file */
+ fclose($whitelist);
+
+ /* open snort's threshold.conf for writing */
+ $threshlist = fopen("/usr/local/etc/snort/threshold.conf", "w");
+ if(!$threshlist) {
+ log_error("Could not open /usr/local/etc/snort/threshold.conf for writing.");
+ return;
+ }
+
+ /* list all entries to new lines */
+ if($config['installedpackages']['snortthreshold'])
+ foreach($config['installedpackages']['snortthreshold']['config'] as $snortthreshlist)
+ if($snortthreshlist['threshrule'])
+ $snortthreshlist_r .= $snortthreshlist['threshrule'] . "\n";
+
+
+ /* foreach through threshlist, writing out to file */
+ $threshlist_split = split("\n", $snortthreshlist_r);
+ foreach($threshlist_split as $wl)
+ if(trim($wl))
+ fwrite($threshlist, trim($wl) . "\n");
+
+ /* close snort's threshold.conf file */
+ fclose($threshlist);
+
+ /* generate rule sections to load */
+ $enabled_rulesets = $config['installedpackages']['snort']['rulesets'];
+ if($enabled_rulesets) {
+ $selected_rules_sections = "";
+ $enabled_rulesets_array = split("\|\|", $enabled_rulesets);
+ foreach($enabled_rulesets_array as $enabled_item)
+ $selected_rules_sections .= "include \$RULE_PATH/{$enabled_item}\n";
+ }
+
+ conf_mount_ro();
+
+ /* build snort configuration file */
+ /* TODO; feed back from pfsense users to reduce false positives */
+ $snort_conf_text = <<<EOD
+
+# snort configuration file
+# generated by the pfSense
+# package manager system
+# see /usr/local/pkg/snort.inc
+# for more information
+
+#########################
+ #
+# Define Local Network #
+ #
+#########################
+
+var HOME_NET {$home_net}
+var EXTERNAL_NET !\$HOME_NET
+
+###################
+ #
+# Define Servers #
+ #
+###################
+
+var DNS_SERVERS [{$def_dns_servers_type}]
+var SMTP_SERVERS [{$def_smtp_servers_type}]
+var HTTP_SERVERS [{$def_http_servers_type}]
+var SQL_SERVERS [{$def_sql_servers_type}]
+var TELNET_SERVERS [{$def_telnet_servers_type}]
+var SNMP_SERVERS [{$def_snmp_servers_type}]
+var FTP_SERVERS [{$def_ftp_servers_type}]
+var SSH_SERVERS [{$def_ssh_servers_type}]
+var POP_SERVERS [{$def_pop_servers_type}]
+var IMAP_SERVERS [{$def_imap_servers_type}]
+var RPC_SERVERS \$HOME_NET
+var WWW_SERVERS [{$def_www_servers_type}]
+var SIP_PROXY_IP [{$def_sip_proxy_ip_type}]
+var AIM_SERVERS \
+[64.12.24.0/23,64.12.28.0/23,64.12.161.0/24,64.12.163.0/24,64.12.200.0/24,205.188.3.0/24,205.188.5.0/24,205.188.7.0/24,205.188.9.0/24,205.188.153.0/24,205.188.179.0/24,205.188.248.0/24]
+
+########################
+ #
+# Define Server Ports #
+ #
+########################
+
+portvar HTTP_PORTS [{$def_http_ports_type}]
+portvar SHELLCODE_PORTS !80
+portvar ORACLE_PORTS [{$def_oracle_ports_type}]
+portvar AUTH_PORTS [{$def_auth_ports_type}]
+portvar DNS_PORTS [{$def_dns_ports_type}]
+portvar FINGER_PORTS [{$def_finger_ports_type}]
+portvar FTP_PORTS [{$def_ftp_ports_type}]
+portvar IMAP_PORTS [{$def_imap_ports_type}]
+portvar IRC_PORTS [{$def_irc_ports_type}]
+portvar MSSQL_PORTS [{$def_mssql_ports_type}]
+portvar NNTP_PORTS [{$def_nntp_ports_type}]
+portvar POP2_PORTS [{$def_pop2_ports_type}]
+portvar POP3_PORTS [{$def_pop3_ports_type}]
+portvar SUNRPC_PORTS [111,32770,32771,32772,32773,32774,32775,32776,32777,32778,32779]
+portvar RLOGIN_PORTS [{$def_rlogin_ports_type}]
+portvar RSH_PORTS [{$def_rsh_ports_type}]
+portvar SMB_PORTS [139,445]
+portvar SMTP_PORTS [{$def_smtp_ports_type}]
+portvar SNMP_PORTS [{$def_snmp_ports_type}]
+portvar SSH_PORTS [{$def_ssh_ports_type}]
+portvar TELNET_PORTS [{$def_telnet_ports_type}]
+portvar MAIL_PORTS [{$def_mail_ports_type}]
+portvar SSL_PORTS [{$def_ssl_ports_type}]
+portvar SIP_PROXY_PORTS [{$def_sip_proxy_ports_type}]
+
+# DCERPC NCACN-IP-TCP
+portvar DCERPC_NCACN_IP_TCP [139,445]
+portvar DCERPC_NCADG_IP_UDP [138,1024:]
+portvar DCERPC_NCACN_IP_LONG [135,139,445,593,1024:]
+portvar DCERPC_NCACN_UDP_LONG [135,1024:]
+portvar DCERPC_NCACN_UDP_SHORT [135,593,1024:]
+portvar DCERPC_NCACN_TCP [2103,2105,2107]
+portvar DCERPC_BRIGHTSTORE [6503,6504]
+
+#####################
+ #
+# Define Rule Paths #
+ #
+#####################
+
+var RULE_PATH /usr/local/etc/snort/rules
+# var PREPROC_RULE_PATH ./preproc_rules
+
+################################
+ #
+# Configure the snort decoder #
+ #
+################################
+
+config checksum_mode: all
+config disable_decode_alerts
+config disable_tcpopt_experimental_alerts
+config disable_tcpopt_obsolete_alerts
+config disable_ttcp_alerts
+config disable_tcpopt_alerts
+config disable_ipopt_alerts
+config disable_decode_drops
+
+###################################
+ #
+# Configure the detection engine #
+# Use lower memory models #
+ #
+###################################
+
+config detection: search-method {$snort_performance}
+config detection: max_queue_events 5
+config event_queue: max_queue 8 log 3 order_events content_length
+
+#Configure dynamic loaded libraries
+dynamicpreprocessor directory /usr/local/lib/snort/dynamicpreprocessor/
+dynamicengine /usr/local/lib/snort/dynamicengine/libsf_engine.so
+dynamicdetection directory /usr/local/lib/snort/dynamicrules/
+
+###################
+ #
+# Flow and stream #
+ #
+###################
+
+preprocessor frag3_global: max_frags 8192
+preprocessor frag3_engine: policy windows
+preprocessor frag3_engine: policy linux
+preprocessor frag3_engine: policy first
+preprocessor frag3_engine: policy bsd detect_anomalies
+
+preprocessor stream5_global: max_tcp 8192, track_tcp yes, \
+track_udp yes, track_icmp yes
+preprocessor stream5_tcp: bind_to any, policy windows
+preprocessor stream5_tcp: bind_to any, policy linux
+preprocessor stream5_tcp: bind_to any, policy vista
+preprocessor stream5_tcp: bind_to any, policy macos
+preprocessor stream5_tcp: policy BSD, ports both all, use_static_footprint_sizes
+preprocessor stream5_udp
+preprocessor stream5_icmp
+
+##########################
+ #
+# NEW #
+# Performance Statistics #
+ #
+##########################
+
+preprocessor perfmonitor: time 300 file /var/log/snort/snort.stats pktcnt 10000
+
+#################
+ #
+# HTTP Inspect #
+ #
+#################
+
+preprocessor http_inspect: global iis_unicode_map unicode.map 1252
+
+preprocessor http_inspect_server: server default \
+ ports { 80 8080 3128 } \
+ no_alerts \
+ non_strict \
+ non_rfc_char { 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 } \
+ flow_depth 0 \
+ apache_whitespace yes \
+ directory no \
+ iis_backslash no \
+ u_encode yes \
+ ascii yes \
+ chunk_length 500000 \
+ bare_byte yes \
+ double_decode yes \
+ iis_unicode yes \
+ iis_delimiter yes \
+ multi_slash no
+
+##################
+ #
+# Other preprocs #
+ #
+##################
+
+preprocessor rpc_decode: 111 32770 32771 32772 32773 32774 32775 32776 32777 32778 32779
+preprocessor bo
+
+#####################
+ #
+# ftp preprocessor #
+ #
+#####################
+
+preprocessor ftp_telnet: global \
+inspection_type stateless
+
+preprocessor ftp_telnet_protocol: telnet \
+ normalize \
+ ayt_attack_thresh 200
+
+preprocessor ftp_telnet_protocol: \
+ ftp server default \
+ def_max_param_len 100 \
+ ports { 21 } \
+ ftp_cmds { USER PASS ACCT CWD SDUP SMNT QUIT REIN PORT PASV TYPE STRU MODE } \
+ ftp_cmds { RETR STOR STOU APPE ALLO REST RNFR RNTO ABOR DELE RMD MKD PWD } \
+ ftp_cmds { LIST NLST SITE SYST STAT HELP NOOP } \
+ ftp_cmds { AUTH ADAT PROT PBSZ CONF ENC } \
+ ftp_cmds { FEAT CEL CMD MACB } \
+ ftp_cmds { MDTM REST SIZE MLST MLSD } \
+ ftp_cmds { XPWD XCWD XCUP XMKD XRMD TEST CLNT } \
+ alt_max_param_len 0 { CDUP QUIT REIN PASV STOU ABOR PWD SYST NOOP } \
+ alt_max_param_len 100 { MDTM CEL XCWD SITE USER PASS REST DELE RMD SYST TEST STAT MACB EPSV CLNT LPRT } \
+ alt_max_param_len 200 { XMKD NLST ALLO STOU APPE RETR STOR CMD RNFR HELP } \
+ alt_max_param_len 256 { RNTO CWD } \
+ alt_max_param_len 400 { PORT } \
+ alt_max_param_len 512 { SIZE } \
+ chk_str_fmt { USER PASS ACCT CWD SDUP SMNT PORT TYPE STRU MODE } \
+ chk_str_fmt { RETR STOR STOU APPE ALLO REST RNFR RNTO DELE RMD MKD } \
+ chk_str_fmt { LIST NLST SITE SYST STAT HELP } \
+ chk_str_fmt { AUTH ADAT PROT PBSZ CONF ENC } \
+ chk_str_fmt { FEAT CEL CMD } \
+ chk_str_fmt { MDTM REST SIZE MLST MLSD } \
+ chk_str_fmt { XPWD XCWD XCUP XMKD XRMD TEST CLNT } \
+ cmd_validity MODE < char ASBCZ > \
+ cmd_validity STRU < char FRP > \
+ cmd_validity ALLO < int [ char R int ] > \
+ cmd_validity TYPE < { char AE [ char NTC ] | char I | char L [ number ] } > \
+ cmd_validity MDTM < [ date nnnnnnnnnnnnnn[.n[n[n]]] ] string > \
+ cmd_validity PORT < host_port >
+
+preprocessor ftp_telnet_protocol: ftp client default \
+ max_resp_len 256 \
+ bounce yes \
+ telnet_cmds yes
+
+#####################
+ #
+# SMTP preprocessor #
+ #
+#####################
+
+preprocessor SMTP: \
+ ports { 25 465 691 } \
+ inspection_type stateful \
+ normalize cmds \
+ valid_cmds { MAIL RCPT HELP HELO ETRN EHLO EXPN VRFY ATRN SIZE BDAT DEBUG EMAL ESAM ESND ESOM EVFY IDENT NOOP RSET SEND SAML SOML AUTH TURN ETRN PIPELINING \
+CHUNKING DATA DSN RSET QUIT ONEX QUEU STARTTLS TICK TIME TURNME VERB X-EXPS X-LINK2STATE XADR XAUTH XCIR XEXCH50 XGEN XLICENSE XQUEU XSTA XTRN XUSR } \
+ normalize_cmds { MAIL RCPT HELP HELO ETRN EHLO EXPN VRFY ATRN SIZE BDAT DEBUG EMAL ESAM ESND ESOM EVFY IDENT NOOP RSET SEND SAML SOML AUTH TURN ETRN \
+PIPELINING CHUNKING DATA DSN RSET QUIT ONEX QUEU STARTTLS TICK TIME TURNME VERB X-EXPS X-LINK2STATE XADR XAUTH XCIR XEXCH50 XGEN XLICENSE XQUEU XSTA XTRN XUSR } \
+ max_header_line_len 1000 \
+ max_response_line_len 512 \
+ alt_max_command_line_len 260 { MAIL } \
+ alt_max_command_line_len 300 { RCPT } \
+ alt_max_command_line_len 500 { HELP HELO ETRN EHLO } \
+ alt_max_command_line_len 255 { EXPN VRFY ATRN SIZE BDAT DEBUG EMAL ESAM ESND ESOM EVFY IDENT NOOP RSET } \
+ alt_max_command_line_len 246 { SEND SAML SOML AUTH TURN ETRN PIPELINING CHUNKING DATA DSN RSET QUIT ONEX } \
+ alt_max_command_line_len 246 { QUEU STARTTLS TICK TIME TURNME VERB X-EXPS X-LINK2STATE XADR } \
+ alt_max_command_line_len 246 { XAUTH XCIR XEXCH50 XGEN XLICENSE XQUEU XSTA XTRN XUSR } \
+ xlink2state { enable }
+
+################
+ #
+# sf Portscan #
+ #
+################
+
+preprocessor sfportscan: scan_type { all } \
+ proto { all } \
+ memcap { 10000000 } \
+ sense_level { medium } \
+ ignore_scanners { \$HOME_NET }
+
+############################
+ #
+# OLD #
+# preprocessor dcerpc: \ #
+# autodetect \ #
+# max_frag_size 3000 \ #
+# memcap 100000 #
+ #
+############################
+
+###############
+ #
+# NEW #
+# DCE/RPC 2 #
+ #
+###############
+
+preprocessor dcerpc2: memcap 102400, events [smb, co, cl]
+preprocessor dcerpc2_server: default, policy WinXP, \
+ detect [smb [139,445], tcp 135, udp 135, rpc-over-http-server 593], \
+ autodetect [tcp 1025:, udp 1025:, rpc-over-http-server 1025:], \
+ smb_max_chain 3
+
+####################
+ #
+# DNS preprocessor #
+ #
+####################
+
+preprocessor dns: \
+ ports { 53 } \
+ enable_rdata_overflow
+
+##############################
+ #
+# NEW #
+# Ignore SSL and Encryption #
+ #
+##############################
+
+preprocessor ssl: ports { 443 465 563 636 989 992 993 994 995 }, trustservers, noinspect_encrypted
+
+#####################
+ #
+# Snort Output Logs #
+ #
+#####################
+
+$snortalertlogtype_type
+$alertsystemlog_type
+$tcpdumplog_type
+$snortmysqllog_info_chk
+$snortunifiedlog_type
+$spoink_type
+
+#################
+ #
+# Misc Includes #
+ #
+#################
+
+include /usr/local/etc/snort/reference.config
+include /usr/local/etc/snort/classification.config
+include /usr/local/etc/snort/threshold.conf
+
+# Snort user pass through configuration
+{$snort_config_pass_thru}
+
+###################
+ #
+# Rules Selection #
+ #
+###################
+
+{$selected_rules_sections}
+
+EOD;
+
+ return $snort_conf_text;
+}
+
+/* check downloaded text from snort.org to make sure that an error did not occur
+ * for example, if you are not a premium subscriber you can only download rules
+ * so often, etc.
+ */
+function check_for_common_errors($filename) {
+ global $snort_filename, $snort_filename_md5, $console_mode;
+ ob_flush();
+ $contents = file_get_contents($filename);
+ if(stristr($contents, "You don't have permission")) {
+ if(!$console_mode) {
+ update_all_status("An error occured while downloading {$filename}.");
+ hide_progress_bar_status();
+ } else {
+ log_error("An error occured. Scroll down to inspect it's contents.");
+ echo "An error occured. Scroll down to inspect it's contents.";
+ }
+ if(!$console_mode) {
+ update_output_window(strip_tags("$contents"));
+ } else {
+ $contents = strip_tags($contents);
+ log_error("Error downloading snort rules: {$contents}");
+ echo "Error downloading snort rules: {$contents}";
+ }
+ scroll_down_to_bottom_of_page();
+ exit;
+ }
+}
+
+/* force browser to scroll all the way down */
+function scroll_down_to_bottom_of_page() {
+ global $snort_filename, $console_mode;
+ ob_flush();
+ if(!$console_mode)
+ echo "\n<script type=\"text/javascript\">parent.scrollTo(0,1500);\n</script>";
+}
+
+/* ensure downloaded file looks sane */
+function verify_downloaded_file($filename) {
+ global $snort_filename, $snort_filename_md5, $console_mode;
+ ob_flush();
+ if(filesize($filename)<9500) {
+ if(!$console_mode) {
+ update_all_status("Checking {$filename}...");
+ check_for_common_errors($filename);
+ }
+ }
+ update_all_status("Verifying {$filename}...");
+ if(!file_exists($filename)) {
+ if(!$console_mode) {
+ update_all_status("Could not fetch snort rules ({$filename}). Check oinkid key and dns and try again.");
+ hide_progress_bar_status();
+ } else {
+ log_error("Could not fetch snort rules ({$filename}). Check oinkid key and dns and try again.");
+ echo "Could not fetch snort rules ({$filename}). Check oinkid key and dns and try again.";
+ }
+ exit;
+ }
+ update_all_status("Verifyied {$filename}.");
+}
+
+/* extract rules */
+function extract_snort_rules_md5($tmpfname) {
+ global $snort_filename, $snort_filename_md5, $console_mode;
+ ob_flush();
+ if(!$console_mode) {
+ $static_output = gettext("Extracting snort rules...");
+ update_all_status($static_output);
+ }
+ if(!is_dir("/usr/local/etc/snort/rules/"))
+ mkdir("/usr/local/etc/snort/rules/");
+ $cmd = "/usr/bin/tar xzf {$tmpfname}/{$snort_filename} -C /usr/local/etc/snort/ rules/";
+ $handle = popen("{$cmd} 2>&1", 'r');
+ while(!feof($handle)) {
+ $buffer = fgets($handle);
+ update_output_window($buffer);
+ }
+ pclose($handle);
+
+ if(!$console_mode) {
+ $static_output = gettext("Snort rules extracted.");
+ update_all_status($static_output);
+ } else {
+ log_error("Snort rules extracted.");
+ echo "Snort rules extracted.";
+ }
+}
+
+/* verify MD5 against downloaded item */
+function verify_snort_rules_md5($tmpfname) {
+ global $snort_filename, $snort_filename_md5, $console_mode;
+ ob_flush();
+ if(!$console_mode) {
+ $static_output = gettext("Verifying md5 signature...");
+ update_all_status($static_output);
+ }
+
+ $md555 = file_get_contents("{$tmpfname}/{$snort_filename_md5}");
+ $md5 = `/bin/echo "{$md555}" | /usr/bin/awk '{ print $4 }'`;
+ $file_md5_ondisk = `/sbin/md5 {$tmpfname}/{$snort_filename} | /usr/bin/awk '{ print $4 }'`;
+ if($md5 == $file_md5_ondisk) {
+ if(!$console_mode) {
+ $static_output = gettext("snort rules: md5 signature of rules mismatch.");
+ update_all_status($static_output);
+ hide_progress_bar_status();
+ } else {
+ log_error("snort rules: md5 signature of rules mismatch.");
+ echo "snort rules: md5 signature of rules mismatch.";
+ }
+ exit;
+ }
+}
+
+/* hide progress bar */
+function hide_progress_bar_status() {
+ global $snort_filename, $snort_filename_md5, $console_mode;
+ ob_flush();
+ if(!$console_mode)
+ echo "\n<script type=\"text/javascript\">document.progressbar.style.visibility='hidden';\n</script>";
+}
+
+/* unhide progress bar */
+function unhide_progress_bar_status() {
+ global $snort_filename, $snort_filename_md5, $console_mode;
+ ob_flush();
+ if(!$console_mode)
+ echo "\n<script type=\"text/javascript\">document.progressbar.style.visibility='visible';\n</script>";
+}
+
+/* update both top and bottom text box during an operation */
+function update_all_status($status) {
+ global $snort_filename, $snort_filename_md5, $console_mode;
+ ob_flush();
+ if(!$console_mode) {
+ update_status($status);
+ update_output_window($status);
+ }
+}
+
+/* obtain alert description for an ip address */
+function get_snort_alert($ip) {
+ global $snort_alert_file_split, $snort_config;
+ if(!file_exists("/var/log/snort/alert"))
+ return;
+ if(!$snort_config)
+ $snort_config = read_snort_config_cache();
+ if($snort_config[$ip])
+ return $snort_config[$ip];
+ if(!$snort_alert_file_split)
+ $snort_alert_file_split = split("\n", file_get_contents("/var/log/snort/alert"));
+ foreach($snort_alert_file_split as $fileline) {
+ if (preg_match("/\[\*\*\] (\[.*\]) (.*) (\[\*\*\])/", $fileline, $matches))
+ $alert_title = $matches[2];
+ if (preg_match("/(\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b)/", $fileline, $matches))
+ $alert_ip = $matches[0];
+ if($alert_ip == $ip) {
+ if(!$snort_config[$ip])
+ $snort_config[$ip] = $alert_title;
+ return $alert_title;
+ }
+ }
+ return "n/a";
+}
+
+function make_clickable($buffer) {
+ global $config, $g;
+ /* if clickable urls is disabled, simply return buffer back to caller */
+ $clickablalerteurls = $config['installedpackages']['snort']['config'][0]['oinkmastercode'];
+ if(!$clickablalerteurls)
+ return $buffer;
+ $buffer = eregi_replace("(^|[ \n\r\t])((http(s?)://)(www\.)?([a-z0-9_-]+(\.[a-z0-9_-]+)+)(/[^/ \n\r]*)*)","\\1<a href=\"\\2\" target=\"_blank\">\\2</a>", $buffer);
+ $buffer = eregi_replace("(^|[ \n\r\t])((ftp://)(www\.)?([a-z0-9_-]+(\.[a-z0-9_-]+)+)(/[^/ \n\r]*)*)","\\1<a href=\"\\2\" target=\"_blank\">\\2</a>", $buffer);
+ $buffer = eregi_replace("([a-z_-][a-z0-9\._-]*@[a-z0-9_-]+(\.[a-z0-9_-]+)+)","<a href=\"mailto:\\1\">\\1</a>", $buffer);
+ $buffer = eregi_replace("(^|[ \n\r\t])(www\.([a-z0-9_-]+(\.[a-z0-9_-]+)+)(/[^/ \n\r]*)*)","\\1<a href=\"http://\\2\" target=\"_blank\">\\2</a>", $buffer);
+ $buffer = eregi_replace("(^|[ \n\r\t])(ftp\.([a-z0-9_-]+(\.[a-z0-9_-]+)+)(/[^/ \n\r]*)*)","\\1<a href=\"ftp://\\2\" target=\"_blank\">\\2</a>", $buffer);
+
+ return $buffer;
+}
+
+function read_snort_config_cache() {
+ global $g, $config, $snort_config;
+ if($snort_config)
+ return $snort_config;
+ if(file_exists($g['tmp_path'] . '/snort_config.cache')) {
+ $snort_config = unserialize(file_get_contents($g['tmp_path'] . '/snort_config.cache'));
+ return $snort_config;
+ }
+ return;
+}
+
+function write_snort_config_cache($snort_config) {
+ global $g, $config;
+ conf_mount_rw();
+ $configcache = fopen($g['tmp_path'] . '/snort_config.cache', "w");
+ if(!$configcache) {
+ log_error("Could not open {$g['tmp_path']}/snort_config.cache for writing.");
+ return false;
+ }
+ fwrite($configcache, serialize($snort_config));
+ fclose($configcache);
+ conf_mount_ro();
+ return true;
+}
+
+function snort_advanced() {
+ global $g, $config;
+ sync_package_snort();
+}
+
+function snort_define_servers() {
+ global $g, $config;
+ sync_package_snort();
+}
+
+?>
diff --git a/config/snort-dev/snort.xml b/config/snort-dev/snort.xml index 9c037222..20655170 100644 --- a/config/snort-dev/snort.xml +++ b/config/snort-dev/snort.xml @@ -328,9 +328,10 @@ </field> </fields> <custom_add_php_command> + sync_package_snort(); </custom_add_php_command> <custom_php_resync_config_command> - sync_package_snort(); + sync_package_snort_install(); </custom_php_resync_config_command> <custom_php_install_command> sync_package_snort_reinstall(); |