diff options
Diffstat (limited to 'config/snort')
| -rw-r--r-- | config/snort/pfsense_rules/pfsense-voip.rules | 3 | ||||
| -rw-r--r-- | config/snort/pfsense_rules/pfsense_rules.tar.gz.md5 | 1 | ||||
| -rw-r--r-- | config/snort/pfsense_rules/rules/pfsense-voip.rules | 11 | ||||
| -rwxr-xr-x | config/snort/snort.inc | 2 | ||||
| -rw-r--r-- | config/snort/snort_download_rules.php | 89 |
5 files changed, 96 insertions, 10 deletions
diff --git a/config/snort/pfsense_rules/pfsense-voip.rules b/config/snort/pfsense_rules/pfsense-voip.rules deleted file mode 100644 index f168403d..00000000 --- a/config/snort/pfsense_rules/pfsense-voip.rules +++ /dev/null @@ -1,3 +0,0 @@ -alert ip any any -> $HOME_NET $SIP_PROXY_PORTS (msg:"OPTIONS SIP scan"; content:"OPTIONS"; depth:7; threshold: type both , track by_src, count 30, seconds 3; sid:5000004; rev:1;) -alert ip any any -> $SIP_PROXY_IP $SIP_PROXY_PORTS (msg:"Excessive number of SIP 4xx Responses - possible user or password guessing attack"; pcre:"/^SIP\/2.0 4\d{2}"; threshold: type both, track by_src, count 100, seconds 60; sid:5000009; rev:1;) -alert ip any any -> $SIP_PROXY_IP $SIP_PROXY_PORTS (msg:"Ghost call attack"; content:"SIP/2.0 180"; depth:11; threshold: type both, track by_src, count 100, seconds 60; sid:5000009; rev:1;) diff --git a/config/snort/pfsense_rules/pfsense_rules.tar.gz.md5 b/config/snort/pfsense_rules/pfsense_rules.tar.gz.md5 new file mode 100644 index 00000000..97a55e1d --- /dev/null +++ b/config/snort/pfsense_rules/pfsense_rules.tar.gz.md5 @@ -0,0 +1 @@ +101
\ No newline at end of file diff --git a/config/snort/pfsense_rules/rules/pfsense-voip.rules b/config/snort/pfsense_rules/rules/pfsense-voip.rules new file mode 100644 index 00000000..3142c0b6 --- /dev/null +++ b/config/snort/pfsense_rules/rules/pfsense-voip.rules @@ -0,0 +1,11 @@ +alert ip any any -> $HOME_NET $SIP_PROXY_PORTS (msg:"OPTIONS SIP scan"; content:"OPTIONS"; depth:7; threshold: type both , track by_src, count 30, seconds 3; sid:5000004; rev:1;) +# Excessive number of SIP 4xx Responses Does not work +#### alert ip any any -> $SIP_PROXY_IP $SIP_PROXY_PORTS (msg:"Excessive number of SIP 4xx Responses - possible user or password guessing attack"; pcre:"/^SIP\/2.0 4\d{2}"; threshold: type both, track by_src, count 100, seconds 60; sid:5000008; rev:1;) +alert ip any any -> $SIP_PROXY_IP $SIP_PROXY_PORTS (msg:"Ghost call attack"; content:"SIP/2.0 180"; depth:11; threshold: type both, track by_src, count 100, seconds 60; sid:5000009; rev:1;) + +# Rule for alerting of INVITE flood attack: +alert ip any any -> $SIP_PROXY_IP $SIP_PROXY_PORTS (msg:"INVITE message flooding"; content:"INVITE"; depth:6; threshold: type both , track by_src, count 100, seconds 60; sid:5000002; rev:1;) +# Rule for alerting of REGISTER flood attack: +alert ip any any -> $SIP_PROXY_IP $SIP_PROXY_PORTS (msg:"REGISTER message flooding"; content:"REGISTER"; depth:8; threshold: type both , track by_src, count 100, seconds 60; sid:5000005; rev:1;) +# Threshold rule for unauthorized responses: +alert ip any any -> $SIP_PROXY_IP $SIP_PROXY_PORTS (msg:"INVITE message flooding"; content:"SIP/2.0 401 Unauthorized"; depth:24; threshold: type both, track by_src, count 100, seconds 60; sid:5000008; rev:1;) diff --git a/config/snort/snort.inc b/config/snort/snort.inc index 7c3b3622..750e1a7c 100755 --- a/config/snort/snort.inc +++ b/config/snort/snort.inc @@ -412,6 +412,7 @@ var POP_SERVERS \$HOME_NET var IMAP_SERVERS \$HOME_NET var RPC_SERVERS \$HOME_NET var WWW_SERVERS \$HOME_NET +var SIP_PROXY_IP \$HOME_NET var AIM_SERVERS \ [64.12.24.0/23,64.12.28.0/23,64.12.161.0/24,64.12.163.0/24,64.12.200.0/24,205.188.3.0/24,205.188.5.0/24,205.188.7.0/24,205.188.9.0/24,205.188.153.0/24,205.188.179.0/24,205.188.248.0/24] @@ -444,6 +445,7 @@ portvar SSH_PORTS {$ssh_port} portvar TELNET_PORTS 23 portvar MAIL_PORTS [25,143,465,691] portvar SSL_PORTS [25,443,465,636,993,995] +portvar SIP_PROXY_PORTS [5060] # DCERPC NCACN-IP-TCP portvar DCERPC_NCACN_IP_TCP [139,445] diff --git a/config/snort/snort_download_rules.php b/config/snort/snort_download_rules.php index 077e8d72..cb3fdd87 100644 --- a/config/snort/snort_download_rules.php +++ b/config/snort/snort_download_rules.php @@ -34,6 +34,8 @@ $snort_filename_md5 = "snortrules-snapshot-2.8.tar.gz.md5"; $snort_filename = "snortrules-snapshot-2.8.tar.gz"; $emergingthreats_filename_md5 = "version.txt"; $emergingthreats_filename = "emerging.rules.tar.gz"; +$pfsense_rules_filename_md5 = "pfsense_rules.tar.gz.md5"; +$pfsense_rules_filename = "pfsense_rules.tar.gz"; require_once("guiconfig.inc"); require_once("functions.inc"); @@ -204,6 +206,20 @@ if ($emergingthreats_url_chk == on) { update_status(gettext("Done. downloading md5")); } +/* download md5 sig from pfsense.org */ +if (file_exists("{$tmpfname}/{$pfsense_rules_filename_md5}")) { + update_status(gettext("md5 temp file exists...")); +} else { + update_status(gettext("Downloading pfsense md5 file...")); + ini_set('user_agent','Mozilla/4.0 (compatible; MSIE 6.0)'); + $image = @file_get_contents("http://www.pfsense.com/packages/config/snort/pfsense_rules/pfsense_rules.tar.gz.md5"); +// $image = @file_get_contents("http://www.mtest.local/pub-bin/oinkmaster.cgi/{$oinkid}/pfsense_rules.tar.gz.md5"); + $f = fopen("{$tmpfname}/pfsense_rules.tar.gz.md5", 'w'); + fwrite($f, $image); + fclose($f); + update_status(gettext("Done. downloading md5")); +} + /* Time stamps define */ $last_md5_download = $config['installedpackages']['snort']['last_md5_download']; $last_rules_install = $config['installedpackages']['snort']['last_rules_install']; @@ -235,6 +251,18 @@ if (0 == filesize("{$tmpfname}/version.txt")){ } } +/* If pfsense md5 file is empty wait 15min exit */ +if (0 == filesize("{$tmpfname}/$pfsense_rules_filename_md5")){ + update_status(gettext("Please wait... You may only check for New Pfsense Rules every 15 minutes...")); + update_output_window(gettext("Rules are released to support Pfsense packages.")); + hide_progress_bar_status(); + /* Display last time of sucsessful md5 check from cache */ + echo "\n<p align=center><b>You last checked for updates: </b>{$last_md5_download}</p>\n"; + echo "\n<p align=center><b>You last installed for rules: </b>{$last_rules_install}</p>\n"; + echo "\n\n</body>\n</html>\n"; + exit(0); +} + /* Check if were up to date snort.org */ if (file_exists("{$snortdir}/snortrules-snapshot-2.8.tar.gz.md5")){ $md5_check_new_parse = file_get_contents("{$tmpfname}/{$snort_filename_md5}"); @@ -280,6 +308,17 @@ if ($emerg_md5_check_new == $emerg_md5_check_old) { } } +/* Check if were up to date pfsense.org */ +if (file_exists("{$snortdir}/$pfsense_rules_filename_md5")){ +$pfsense_md5_check_new_parse = file_get_contents("{$tmpfname}/{$snort_filename_md5}"); +$pfsense_md5_check_new = `/bin/echo "{$pfsense_md5_check_new_parse}" | /usr/bin/awk '{ print $1 }'`; +$pfsense_md5_check_old_parse = file_get_contents("{$snortdir}/{$snort_filename_md5}"); +$pfsense_md5_check_old = `/bin/echo "{$md5_check_old_parse}" | /usr/bin/awk '{ print $1 }'`; +if ($pfsense_md5_check_new == $pfsense_md5_check_old) { + $pfsense_md5_check_ok = on; + } +} + /* Make Clean Snort Directory emergingthreats not checked */ if ($snort_md5_check_ok == on && $emergingthreats_url_chk != on) { update_status(gettext("Cleaning the snort Directory...")); @@ -290,13 +329,13 @@ if ($snort_md5_check_ok == on && $emergingthreats_url_chk != on) { } /* Check if were up to date exits */ -if ($snort_md5_check_ok == on && $emerg_md5_check_chk_ok == on) { +if ($snort_md5_check_ok == on && $emerg_md5_check_chk_ok == on && $pfsense_md5_check_ok == on) { update_status(gettext("Your rules are up to date...")); update_output_window(gettext("You may start Snort now...")); exit(0); } -if ($snort_md5_check_ok == on && $emergingthreats_url_chk != on) { +if ($snort_md5_check_ok == on && $pfsense_md5_check_ok == on && $emergingthreats_url_chk != on) { update_status(gettext("Your rules are up to date...")); update_output_window(gettext("You may start Snort now...")); exit(0); @@ -318,7 +357,7 @@ if (file_exists("{$tmpfname}/{$snort_filename}")) { update_status(gettext("There is a new set of Snort rules posted. Downloading...")); update_output_window(gettext("May take 4 to 10 min...")); // download_file_with_progress_bar("http://www.mtest.local/pub-bin/oinkmaster.cgi/{$oinkid}/snortrules-snapshot-2.8{$premium_subscriber}.tar.gz", $tmpfname . "/{$snort_filename}", "read_body_firmware"); - download_file_with_progress_bar("http://dl.snort.org/{$premium_url}/snortrules-snapshot-2.8{$premium_subscriber}.tar.gz?oink_code={$oinkid}", $tmpfname . "/{$snort_filename}", "read_body_firmware"); + download_file_with_progress_bar("http://dl.snort.org/{$premium_url}/snortrules-snapshot-2.8{$premium_subscriber}.tar.gz?oink_code={$oinkid}", $tmpfname . "/{$snort_filename}", "read_body_firmware"); update_all_status($static_output); update_status(gettext("Done downloading rules file.")); } @@ -340,6 +379,21 @@ if (file_exists("{$tmpfname}/{$emergingthreats_filename}")) { } } +/* download pfsense rules file */ +if ($pfsense_md5_check_ok != on) { +if (file_exists("{$tmpfname}/{$pfsense_rules_filename}")) { + update_status(gettext("Snortrule tar file exists...")); +} else { + unhide_progress_bar_status(); + update_status(gettext("There is a new set of Pfsense rules posted. Downloading...")); + update_output_window(gettext("May take 4 to 10 min...")); +// download_file_with_progress_bar("http://www.mtest.local/pub-bin/oinkmaster.cgi/{$oinkid}/pfsense_rules.tar.gz", $tmpfname . "/{$pfsense_rules_filename}", "read_body_firmware"); + download_file_with_progress_bar("http://www.pfsense.com/packages/config/snort/pfsense_rules/pfsense_rules.tar.gz", $tmpfname . "/{$pfsense_rules_filename}", "read_body_firmware"); + update_all_status($static_output); + update_status(gettext("Done downloading rules file.")); + } +} + /* Compair md5 sig to file sig */ //$premium_url_chk = $config['installedpackages']['snort']['config'][0]['subscriber']; @@ -409,10 +463,19 @@ if (file_exists("{$tmpfname}/{$emergingthreats_filename}")) { } } +/* Untar Pfsense rules to tmp */ +if ($pfsense_md5_check_ok != on) { +if (file_exists("{$tmpfname}/{$pfsense_rules_filename}")) { + update_status(gettext("Extracting Pfsense rules...")); + update_output_window(gettext("May take a while...")); + exec("/usr/bin/tar xzf {$tmpfname}/{$pfsense_rules_filename} -C {$tmpfname} rules/"); + } +} + /* Untar snort signatures */ if ($snort_md5_check_ok != on) { if (file_exists("{$tmpfname}/{$snort_filename}")) { -$signature_info_chk = $config['installedpackages']['snort']['config'][0]['signatureinfo']; +$signature_info_chk = $config['installedpackages']['snortadvanced']['config'][0]['signatureinfo']; if ($premium_url_chk == on) { update_status(gettext("Extracting Signatures...")); update_output_window(gettext("May take a while...")); @@ -423,7 +486,7 @@ if ($premium_url_chk == on) { } /* Make Clean Snort Directory */ -if ($snort_md5_check_ok != on && $emerg_md5_check_chk_ok != on) { +if ($snort_md5_check_ok != on && $emerg_md5_check_chk_ok != on && $pfsense_md5_check_ok != on) { if (file_exists("{$snortdir}/rules")) { update_status(gettext("Cleaning the snort Directory...")); update_output_window(gettext("removing...")); @@ -440,8 +503,8 @@ if (file_exists("{$snortdir}/rules")) { } } -/* Copy snort rules and emergingthreats dir to snort dir */ -if ($snort_md5_check_ok != on || $emerg_md5_check_chk_ok != on) { +/* Copy snort rules and emergingthreats and pfsense dir to snort dir */ +if ($snort_md5_check_ok != on || $emerg_md5_check_chk_ok != on || $pfsense_md5_check_ok != on) { if (file_exists("{$tmpfname}/rules")) { update_status(gettext("Copying rules...")); update_output_window(gettext("May take a while...")); @@ -483,6 +546,18 @@ if (file_exists("{$tmpfname}/$emergingthreats_filename_md5")) { } } +/* Copy Pfsense md5 sig to snort dir */ +if ($pfsense_md5_check_ok != on) { +if (file_exists("{$tmpfname}/$pfsense_rules_filename_md5")) { + update_status(gettext("Copying Pfsense md5 sig to snort directory...")); + exec("/bin/cp {$tmpfname}/$pfsense_rules_filename_md5 {$snortdir}/$pfsense_rules_filename_md5"); +} else { + update_status(gettext("The Pfsense md5 file does not exist...")); + update_output_window(gettext("Error copping config...")); + exit(0); + } +} + /* Copy configs to snort dir */ if ($snort_md5_check_ok != on) { if (file_exists("{$tmpfname}/etc/Makefile.am")) { |