diff options
Diffstat (limited to 'config/snort/snort.inc')
| -rwxr-xr-x | config/snort/snort.inc | 296 |
1 files changed, 241 insertions, 55 deletions
diff --git a/config/snort/snort.inc b/config/snort/snort.inc index f1f5ad9b..d69f6237 100755 --- a/config/snort/snort.inc +++ b/config/snort/snort.inc @@ -47,7 +47,7 @@ global $rebuild_rules; /* package version */ $snort_version = "2.9.4.6"; -$pfSense_snort_version = "2.5.9"; +$pfSense_snort_version = "2.6.0"; $snort_package_version = "Snort {$snort_version} pkg v. {$pfSense_snort_version}"; // Define SNORTDIR and SNORTLIBDIR constants according to FreeBSD version (PBI support or no PBI) @@ -83,6 +83,101 @@ $rebuild_rules = false; if (!is_array($config['installedpackages']['snortglobal'])) $config['installedpackages']['snortglobal'] = array(); +function snort_get_alias_value($alias) { + /***************************************************/ + /* This function returns the value of the passed */ + /* Alias, or an empty string if the value cannot */ + /* be determined. */ + /* */ + /* On Entry: $alias ==> Alias to be evaluated */ + /* Returns: Alias value as a string or an empty */ + /* string */ + /***************************************************/ + + global $config; + + $entries = array(); + $tmp = ""; + + // If no Aliases are defined in the configuration, + // return an empty string. + if (empty($config['aliases'])) + return $tmp; + + // See if we were passed a valid Alias and return + // an empty string if not. + if (!is_alias($alias)) + return $tmp; + + // We have a valid Alias, so find its value or + // values and return as a string. + return snort_unpack_alias($alias); +} + +function snort_unpack_alias($alias) { + + /**************************************************/ + /* This function unpacks an Alias to determine */ + /* the actual values it represents. Any nested */ + /* Aliases encountered are also unpacked via */ + /* recursive calls to this function. */ + /* */ + /* Fully-qualified-domain-name (FQDN) aliases */ + /* are detected and resolved via a pfctl() call. */ + /**************************************************/ + + global $config; + $value = ""; + + // Find the matching Alias entry in config + foreach ($config['aliases']['alias'] as $aliased) { + if($aliased['name'] == $alias) { + $addr = array(); + $addr = explode(" ", trim($aliased['address'])); + foreach ($addr as $a) { + if (!is_alias($a) && !empty($a)) { + if (is_ipaddr($a) || is_subnet($a) || is_port($a)) + // If address, subnet or port, we found the final value + $value .= $a . " "; + elseif (is_hostname($a)) { + // Found a FQDN value for this Alias, so resolve it + $entries = array(); + exec("/sbin/pfctl -t " . escapeshellarg($alias) . " -T show", $entries); + $value .= trim(implode(" ", $entries)); + } + else + continue; + } + elseif (is_alias($a)) + // Found a nested Alias, so recursively resolve it + $value .= snort_unpack_alias($a) . " "; + } + return trim($value); + } + } + return $value; +} + +function snort_is_single_addr_alias($alias) { + /***************************************************/ + /* This function evaluates the passed Alias to */ + /* determine if it represents a single IP address, */ + /* or a network in CIDR form, and returns TRUE if */ + /* the condition is met, and FALSE if not. */ + /* */ + /* On Entry: $alias ==> Alias to be evaluated */ + /* Returns: TRUE if Alias represents a single */ + /* IP address or network, and FALSE */ + /* if not. */ + /***************************************************/ + + /* If spaces in expanded Alias, it's not a single entity */ + if (strpos(snort_get_alias_value($alias), " ") !== false) + return false; + else + return true; +} + function snort_get_blocked_ips() { $blocked_ips = ""; exec('/sbin/pfctl -t snort2c -T show', $blocked_ips); @@ -164,8 +259,13 @@ function snort_load_suppress_sigs($snortcfg, $track_by=false) { if (preg_match('/\s*suppress\s*gen_id\b\s*(\d+),\s*sig_id\b\s*(\d+)\s*$/i', $line, $matches)) { $genid = $matches[1]; $sigid = $matches[2]; - if (!empty($genid) && !empty($sigid)) + if (!empty($genid) && !empty($sigid)) { + if (!is_array($suppress[$genid])) + $suppress[$genid] = array(); + if (!is_array($suppress[$genid][$sigid])) + $suppress[$genid][$sigid] = array(); $suppress[$genid][$sigid] = "suppress"; + } } /* Get "track by IP" entries if requested */ @@ -176,8 +276,17 @@ function snort_load_suppress_sigs($snortcfg, $track_by=false) { $sigid = $matches[2]; $whichip = trim($matches[3]); $ip = $matches[4]; - if (!empty($genid) && !empty($sigid) && !empty($whichip) && !empty($ip)) + if (!empty($genid) && !empty($sigid) && !empty($whichip) && !empty($ip)) { + if (!is_array($suppress[$genid])) + $suppress[$genid] = array(); + if (!is_array($suppress[$genid][$sigid])) + $suppress[$genid][$sigid] = array(); + if (!is_array($suppress[$genid][$sigid][$whichip])) + $suppress[$genid][$sigid][$whichip] = array(); + if (!is_array($suppress[$genid][$sigid][$whichip][$ip])) + $suppress[$genid][$sigid][$whichip][$ip] = array(); $suppress[$genid][$sigid][$whichip][$ip] = "suppress"; + } } /* See if entry suppresses only by SRC or DST IPv6 address */ if (preg_match('/\s*suppress\s*gen_id\b\s*(\d+),\s*sig_id\b\s*(\d+),\s*track\s*(by_src|by_dst),\s*ip\s*([0-9a-f\.:]+)\s*$/i', $line, $matches)) { @@ -185,8 +294,17 @@ function snort_load_suppress_sigs($snortcfg, $track_by=false) { $sigid = $matches[2]; $whichip = trim($matches[3]); $ip = trim($matches[4]); - if (!empty($genid) && !empty($sigid) && !empty($whichip) && !empty($ip)) + if (!empty($genid) && !empty($sigid) && !empty($whichip) && !empty($ip)) { + if (!is_array($suppress[$genid])) + $suppress[$genid] = array(); + if (!is_array($suppress[$genid][$sigid])) + $suppress[$genid][$sigid] = array(); + if (!is_array($suppress[$genid][$sigid][$whichip])) + $suppress[$genid][$sigid][$whichip] = array(); + if (!is_array($suppress[$genid][$sigid][$whichip][$ip])) + $suppress[$genid][$sigid][$whichip][$ip] = array(); $suppress[$genid][$sigid][$whichip][$ip] = "suppress"; + } } } } @@ -241,7 +359,7 @@ function snort_build_list($snortcfg, $listname = "", $whitelist = false) { $vips = $list['vips']; $vpns = $list['vpnips']; if (!empty($list['address']) && is_alias($list['address'])) { - $home_net = explode(" ", trim(filter_expand_alias($list['address']))); + $home_net = explode(" ", trim(snort_get_alias_value($list['address']))); } } @@ -1769,24 +1887,33 @@ function snort_modify_sids(&$rule_map, $snortcfg) { unset($enablesid, $disablesid); } -/* Start of main config files */ -/* open snort.sh for writing" */ function snort_create_rc() { + + /*********************************************************/ + /* This function builds the /usr/local/etc/rc.d/snort.sh */ + /* shell script for starting and stopping Snort. The */ + /* script is rebuilt on each package sync operation and */ + /* after any changes to snort.conf saved in the GUI. */ + /*********************************************************/ + global $config, $g; $snortdir = SNORTDIR; $rcdir = RCFILEPREFIX; + // If no interfaces are configured for Snort, exit if (!is_array($config['installedpackages']['snortglobal']['rule'])) return; - - $snortconf =& $config['installedpackages']['snortglobal']['rule']; - /* do not start config build if rules is empty */ + $snortconf = $config['installedpackages']['snortglobal']['rule']; if (empty($snortconf)) return; + // At least one interface is configured, so OK $start_snort_iface_start = array(); $start_snort_iface_stop = array(); + + // Loop thru each configured interface and build + // the shell script. foreach ($snortconf as $value) { $snort_uuid = $value['uuid']; $if_real = snort_get_real_interface($value['interface']); @@ -1794,7 +1921,7 @@ function snort_create_rc() { $start_barnyard = <<<EOE if [ ! -f {$g['varrun_path']}/barnyard2_{$if_real}{$snort_uuid}.pid ]; then - pid=`/bin/pgrep -xf '/usr/local/bin/barnyard2 -r {$snort_uuid} -f snort_{$snort_uuid}_{$if_real}.u2 --pid-path {$g['varrun_path']} --nolock-pidfile -c {$snortdir}/snort_{$snort_uuid}_{$if_real}/barnyard2.conf -d /var/log/snort/snort_{$if_real}{$snort_uuid} -D -q' > {$g['varrun_path']}/barnyard2_{$if_real}{$snort_uuid}.pid` + pid=`/bin/pgrep -f "barnyard2 -r {$snort_uuid} "` else pid=`/bin/pgrep -F {$g['varrun_path']}/barnyard2_{$if_real}{$snort_uuid}.pid` fi @@ -1835,9 +1962,9 @@ EOE; /bin/rm /var/run/barnyard2_{$if_real}{$snort_uuid}.pid fi else - pid=`/bin/pgrep -xf '/usr/local/bin/barnyard2 -r {$snort_uuid} -f snort_{$snort_uuid}_{$if_real}.u2 --pid-path {$g['varrun_path']} --nolock-pidfile -c {$snortdir}/snort_{$snort_uuid}_{$if_real}/barnyard2.conf -d /var/log/snort/snort_{$if_real}{$snort_uuid} -D -q'` + pid=`/bin/pgrep -f "barnyard2 -r {$snort_uuid} "` if [ ! -z \$pid ]; then - /bin/pkill -xf '/usr/local/bin/barnyard2 -r {$snort_uuid} -f snort_{$snort_uuid}_{$if_real}.u2 --pid-path {$g['varrun_path']} --nolock-pidfile -c {$snortdir}/snort_{$snort_uuid}_{$if_real}/barnyard2.conf -d /var/log/snort/snort_{$if_real}{$snort_uuid} -D -q' + /bin/pkill -f "barnyard2 -r {$snort_uuid} " time=0 timeout=30 while kill -0 \$pid 2>/dev/null; do sleep 1 @@ -1860,10 +1987,11 @@ EOE; ###### For Each Iface # Start snort and barnyard2 if [ ! -f {$g['varrun_path']}/snort_{$if_real}{$snort_uuid}.pid ]; then - pid=`/bin/pgrep -xf '/usr/local/bin/snort -R {$snort_uuid} -D -q -l /var/log/snort/snort_{$if_real}{$snort_uuid} --pid-path {$g['varrun_path']} --nolock-pidfile -G {$snort_uuid} -c {$snortdir}/snort_{$snort_uuid}_{$if_real}/snort.conf -i {$if_real}'` + pid=`/bin/pgrep -f "snort -R {$snort_uuid} "` else pid=`/bin/pgrep -F {$g['varrun_path']}/snort_{$if_real}{$snort_uuid}.pid` fi + if [ ! -z \$pid ]; then /usr/bin/logger -p daemon.info -i -t SnortStartup "Snort SOFT RESTART for {$value['descr']}({$snort_uuid}_{$if_real})..." /bin/pkill -HUP \$pid @@ -1895,10 +2023,10 @@ EOE; /bin/rm /var/run/snort_{$if_real}{$snort_uuid}.pid fi else - pid=`/bin/pgrep -xf '/usr/local/bin/snort -R {$snort_uuid} -D -q -l /var/log/snort/snort_{$if_real}{$snort_uuid} --pid-path {$g['varrun_path']} --nolock-pidfile -G {$snort_uuid} -c {$snortdir}/snort_{$snort_uuid}_{$if_real}/snort.conf -i {$if_real}'` + pid=`/bin/pgrep -f "snort -R {$snort_uuid} "` if [ ! -z \$pid ]; then /usr/bin/logger -p daemon.info -i -t SnortStartup "Snort STOP for {$value['descr']}({$snort_uuid}_{$if_real})..." - /bin/pkill -xf '/usr/local/bin/snort -R {$snort_uuid} -D -q -l /var/log/snort/snort_{$if_real}{$snort_uuid} --pid-path {$g['varrun_path']} --nolock-pidfile -G {$snort_uuid} -c {$snortdir}/snort_{$snort_uuid}_{$if_real}/snort.conf -i {$if_real}' + /bin/pkill -f "snort -R {$snort_uuid} " time=0 timeout=30 while kill -0 \$pid 2>/dev/null; do sleep 1 @@ -1925,7 +2053,7 @@ EOE; # This file was automatically generated # by the pfSense service handler. # Code added to protect from double starts on pfSense bootup -######## Begining of Main snort.sh +######## Start of main snort.sh rc_start() { {$rc_start} @@ -2236,6 +2364,10 @@ function snort_prepare_rule_files($snortcfg, $snortcfgdir) { log_error('[Snort] Enabling any flowbit-required rules for: ' . snort_get_friendly_interface($snortcfg['interface']) . '...'); $fbits = snort_resolve_flowbits($all_rules, $enabled_rules); + /* Check for and disable any flowbit-required rules the user has */ + /* manually forced to a disabled state. */ + snort_modify_sids($fbits, $snortcfg); + /* Check for and disable any flowbit-required rules dependent upon */ /* disabled preprocessors if this option is enabled for the interface. */ if ($snortcfg['preproc_auto_rule_disable'] == "on") { @@ -2548,14 +2680,15 @@ function snort_generate_conf($snortcfg) { $ssh_port = "22"; $snort_ports = array( "dns_ports" => "53", "smtp_ports" => "25", "mail_ports" => "25,143,465,691", - "http_ports" => "80,901,3128,8080,9000", "oracle_ports" => "1521", "mssql_ports" => "1433", - "telnet_ports" => "23","snmp_ports" => "161", "ftp_ports" => "21", + "http_ports" => "36,80,81,82,83,84,85,86,87,88,89,90,311,383,591,593,631,901,1220,1414,1741,1830,2301,2381,2809,3037,3057,3128,3443,3702,4343,4848,5250,6080,6988,7000,7001,7144,7145,7510,7777,7779,8000,8008,8014,8028,8080,8085,8088,8090,8118,8123,8180,8181,8222,8243,8280,8300,8500,8800,8888,8899,9000,9060,9080,9090,9091,9443,9999,10000,11371,34443,34444,41080,50000,50002,55555", + "oracle_ports" => "1024:", "mssql_ports" => "1433", + "telnet_ports" => "23","snmp_ports" => "161", "ftp_ports" => "21,2100,3535", "ssh_ports" => $ssh_port, "pop2_ports" => "109", "pop3_ports" => "110", "imap_ports" => "143", "sip_proxy_ports" => "5060:5090,16384:32768", - "sip_ports" => "5060,5061", "auth_ports" => "113", "finger_ports" => "79", + "sip_ports" => "5060,5061, 5600", "auth_ports" => "113", "finger_ports" => "79", "irc_ports" => "6665,6666,6667,6668,6669,7000", "smb_ports" => "139,445", "nntp_ports" => "119", "rlogin_ports" => "513", "rsh_ports" => "514", - "ssl_ports" => "443,465,563,636,989,990,992,993,994,995", + "ssl_ports" => "443,465,563,636,989,992,993,994,995,7801,7802,7900,7901,7902,7903,7904,7905,7906,7907,7908,7909,7910,7911,7912,7913,7914,7915,7916,7917,7918,7919,7920", "file_data_ports" => "\$HTTP_PORTS,110,143", "shellcode_ports" => "!80", "sun_rpc_ports" => "111,32770,32771,32772,32773,32774,32775,32776,32777,32778,32779", "DCERPC_NCACN_IP_TCP" => "139,445", "DCERPC_NCADG_IP_UDP" => "138,1024:", @@ -2568,7 +2701,7 @@ function snort_generate_conf($snortcfg) { $portvardef = ""; foreach ($snort_ports as $alias => $avalue) { if (!empty($snortcfg["def_{$alias}"]) && is_alias($snortcfg["def_{$alias}"])) - $snort_ports[$alias] = filter_expand_alias($snortcfg["def_{$alias}"]); + $snort_ports[$alias] = snort_get_alias_value($snortcfg["def_{$alias}"]); $snort_ports[$alias] = preg_replace('/\s+/', ',', trim($snort_ports[$alias])); $portvardef .= "portvar " . strtoupper($alias) . " [" . $snort_ports[$alias] . "]\n"; } @@ -2633,19 +2766,23 @@ preprocessor http_inspect_server: server default profile {$http_server_profile} EOD; /* def ftp_preprocessor */ + $telnet_ports = str_replace(",", " ", $snort_ports['telnet_ports']); + $ftp_ports = str_replace(",", " ", $snort_ports['ftp_ports']); $ftp_preprocessor = <<<EOD -# ftp preprocessor # +# ftp_telnet preprocessor # preprocessor ftp_telnet: global \ inspection_type stateless preprocessor ftp_telnet_protocol: telnet \ - normalize \ - ayt_attack_thresh 200 + normalize ports { {$telnet_ports} } \ + ayt_attack_thresh 20 \ + detect_anomalies -preprocessor ftp_telnet_protocol: \ - ftp server default \ +preprocessor ftp_telnet_protocol: ftp server default \ def_max_param_len 100 \ - ports { 21 } \ + ports { $ftp_ports } \ + telnet_cmds yes \ + ignore_telnet_erase_cmds yes \ 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 } \ @@ -2676,12 +2813,14 @@ preprocessor ftp_telnet_protocol: \ preprocessor ftp_telnet_protocol: ftp client default \ max_resp_len 256 \ bounce yes \ + ignore_telnet_erase_cmds yes \ telnet_cmds yes EOD; $pop_ports = str_replace(",", " ", $snort_ports['pop3_ports']); $pop_preproc = <<<EOD +# POP preprocessor # preprocessor pop: \ ports { {$pop_ports} } \ memcap 1310700 \ @@ -2693,6 +2832,7 @@ EOD; $imap_ports = str_replace(",", " ", $snort_ports['imap_ports']); $imap_preproc = <<<EOD +# IMAP preprocessor # preprocessor imap: \ ports { {$imap_ports} } \ memcap 1310700 \ @@ -2711,10 +2851,12 @@ preprocessor SMTP: \ inspection_type stateful \ normalize cmds \ ignore_tls_data \ - 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 } \ + 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 } \ @@ -2752,12 +2894,12 @@ EOD; $sf_pscan_sense_level = $snortcfg['pscan_sense_level']; $sf_pscan_ignore_scanners = "\$HOME_NET"; if (!empty($snortcfg['pscan_ignore_scanners']) && is_alias($snortcfg['pscan_ignore_scanners'])) { - $sf_pscan_ignore_scanners = filter_expand_alias($snortcfg['pscan_ignore_scanners']); + $sf_pscan_ignore_scanners = snort_get_alias_value($snortcfg['pscan_ignore_scanners']); $sf_pscan_ignore_scanners = preg_replace('/\s+/', ',', trim($sf_pscan_ignore_scanners)); } $sf_portscan = <<<EOD -# sf Portscan # +# sf Portscan preprocessor # preprocessor sfportscan: scan_type { {$sf_pscan_type} } \ proto { {$sf_pscan_protocol} } \ memcap { {$sf_pscan_memcap} } \ @@ -2766,21 +2908,34 @@ preprocessor sfportscan: scan_type { {$sf_pscan_type} } \ EOD; - $sun_rpc_ports = str_replace(",", " ", $snort_ports['sun_rpc_ports']); + /* def ssh_preproc */ + $ssh_ports = str_replace(",", " ", $snort_ports['ssh_ports']); + $ssh_preproc = <<<EOD +# SSH preprocessor # +preprocessor ssh: server_ports { {$ssh_ports} } \ + autodetect \ + max_client_bytes 19600 \ + max_encrypted_packets 20 \ + max_server_version_len 100 \ + enable_respoverflow enable_ssh1crc32 \ + enable_srvoverflow enable_protomismatch + +EOD; + /* def other_preprocs */ + $sun_rpc_ports = str_replace(",", " ", $snort_ports['sun_rpc_ports']); $other_preprocs = <<<EOD - # Other preprocs # preprocessor rpc_decode: {$sun_rpc_ports} no_alert_multiple_requests no_alert_large_fragments no_alert_incomplete -# Back Orifice +# Back Orifice preprocessor # preprocessor bo EOD; /* def dce_rpc_2 */ $dce_rpc_2 = <<<EOD -# DCE/RPC 2 # +# DCE/RPC 2 # preprocessor dcerpc2: memcap 102400, events [co] preprocessor dcerpc2_server: default, policy WinXP, \ detect [smb [{$snort_ports['smb_ports']}], tcp 135, udp 135, rpc-over-http-server 593], \ @@ -2791,11 +2946,39 @@ EOD; $sip_ports = str_replace(",", " ", $snort_ports['sip_ports']); $sip_preproc = <<<EOD -# SIP preprocessor -preprocessor sip: ports { {$sip_ports} }, max_call_id_len 300, \ - max_from_len 100, max_to_len 200, max_via_len 1000, \ - max_requestName_len 50, max_uri_len 100, ignore_call_channel,\ - max_content_len 1000 +# SIP preprocessor # +preprocessor sip: max_sessions 40000, \ + ports { {$sip_ports} }, \ + methods { invite \ + cancel \ + ack \ + bye \ + register \ + options \ + refer \ + subscribe \ + update \ + join \ + info \ + message \ + notify \ + benotify \ + do \ + qauth \ + sprack \ + publish \ + service \ + unsubscribe \ + prack }, \ + max_call_id_len 80, \ + max_from_len 256, \ + max_to_len 256, \ + max_via_len 1024, \ + max_requestName_len 50, \ + max_uri_len 512, \ + ignore_call_channel, \ + max_content_len 2048, \ + max_contact_len 512 EOD; @@ -2837,10 +3020,13 @@ preprocessor gtp: ports { {$gtp_ports} } EOD; - $def_ssl_ports_ignore = str_replace(",", " ", $snort_ports['ssl_ports']); + /* def ssl_preprocessor */ + $ssl_ports = str_replace(",", " ", $snort_ports['ssl_ports']); $ssl_preproc = <<<EOD -# Ignore SSL and Encryption # -preprocessor ssl: ports { {$def_ssl_ports_ignore} }, trustservers, noinspect_encrypted +# SSL preprocessor # +preprocessor ssl: \ + ports { {$ssl_ports} }, \ + trustservers, noinspect_encrypted EOD; @@ -2872,7 +3058,7 @@ EOD; $vardef = ""; foreach ($snort_servers as $alias => $avalue) { if (!empty($snortcfg["def_{$alias}"]) && is_alias($snortcfg["def_{$alias}"])) { - $avalue = filter_expand_alias($snortcfg["def_{$alias}"]); + $avalue = snort_get_alias_value($snortcfg["def_{$alias}"]); $avalue = str_replace(" ", ",", trim($avalue)); } $vardef .= "var " . strtoupper($alias) . " [{$avalue}]\n"; @@ -2885,7 +3071,7 @@ EOD; "ssl_preproc" => "ssl_preproc", "dnp3_preproc" => "dnp3_preproc", "modbus_preproc" => "modbus_preproc" ); $snort_preproc = array ( - "perform_stat", "http_inspect", "other_preprocs", "ftp_preprocessor", "smtp_preprocessor", "ssl_preproc", "sip_preproc", "gtp_preproc", + "perform_stat", "http_inspect", "other_preprocs", "ftp_preprocessor", "smtp_preprocessor", "ssl_preproc", "sip_preproc", "gtp_preproc", "ssh_preproc", "sf_portscan", "dce_rpc_2", "dns_preprocessor", "sensitive_data", "pop_preproc", "imap_preproc", "dnp3_preproc", "modbus_preproc" ); $default_disabled_preprocs = array( @@ -3071,7 +3257,7 @@ EOD; # snort configuration file # generated automatically by the pfSense subsystems do not modify manually -# Define Local Network # +# Define Local Network # var HOME_NET [{$home_net}] var EXTERNAL_NET [{$external_net}] @@ -3079,16 +3265,16 @@ var EXTERNAL_NET [{$external_net}] var RULE_PATH {$snortcfgdir}/rules var PREPROC_RULE_PATH {$snortcfgdir}/preproc_rules -# Define Servers # +# Define Servers # {$vardef} -# Define Server Ports # +# Define Server Ports # {$portvardef} # Configure quiet startup mode # config quiet -# Configure the snort decoder # +# Configure the snort decoder # config checksum_mode: {$cksumcheck} config disable_decode_alerts config disable_tcpopt_experimental_alerts @@ -3098,14 +3284,14 @@ config disable_tcpopt_alerts config disable_ipopt_alerts config disable_decode_drops -# Enable the GTP decoder # +# Enable the GTP decoder # config enable_gtp # Configure PCRE match limitations config pcre_match_limit: 3500 config pcre_match_limit_recursion: 1500 -# Configure the detection engine # +# Configure the detection engine # config detection: {$cfg_detect_settings} config event_queue: max_queue 8 log 5 order_events content_length @@ -3134,7 +3320,7 @@ preprocessor frag3_global: {$frag3_memcap}, {$frag3_max_frags}{$frag3_disabled} preprocessor frag3_engine: {$frag3_policy} detect_anomalies {$frag3_timeout} {$frag3_overlap_limit} {$frag3_min_frag_len} preprocessor stream5_global:{$stream5_reassembly} track_tcp {$stream5_track_tcp}, track_udp {$stream5_track_udp}, track_icmp {$stream5_track_icmp}, max_tcp 262144, max_udp 131072, max_active_responses 2, min_response_seconds 5{$stream5_mem_cap} -preprocessor stream5_tcp: {$stream5_policy}, {$stream5_overlap_limit}, {$stream5_tcp_timeout}, ports both all{$stream5_max_queued_bytes_type}{$stream5_max_queued_segs_type}{$stream5_require_3whs}{$stream5_no_reassemble_async}$stream5_dont_store_lg_pkts +preprocessor stream5_tcp: {$stream5_policy}, {$stream5_overlap_limit}, {$stream5_tcp_timeout}, ports both all{$stream5_max_queued_bytes_type}{$stream5_max_queued_segs_type}{$stream5_require_3whs}{$stream5_no_reassemble_async}{$stream5_dont_store_lg_pkts} preprocessor stream5_udp: {$stream5_udp_timeout} preprocessor stream5_icmp: {$stream5_icmp_timeout} |