Snort mailing list archives

Re: detection_filter not working

From: "Al Lewis (allewi)" <allewi () cisco com>
Date: Sun, 22 Jan 2017 17:15:39 +0000

Anna,


I noticed in your rule that you had the timer set to 1 second for 20 packets. If the traffic is being generated by a 
tool (hping) you may want to capture it and make sure that all packets are falling within the time period set. Or try 
raising the timer/lowering the count.


Attached is another example. The pcap has been edited (timestamp intervals and ip’s) to get the traffic within the 
specified time period of one second.


cliffjumper:snort-2.9.9.0-released byob$ tcpdump -n -r etc/ANNA.pcap
reading from file etc/ANNA.pcap, link-type EN10MB (Ethernet)
11:59:54.130000 IP 127.0.0.1.55117 > 127.0.0.4.80: Flags [S], seq 980889214, win 1024, options [mss 1460], length 0
11:59:54.180000 IP 127.0.0.1.55117 > 127.0.1.4.80: Flags [S], seq 980889214, win 1024, options [mss 1460], length 0
11:59:54.230000 IP 127.0.0.1.55117 > 127.0.2.4.80: Flags [S], seq 980889214, win 1024, options [mss 1460], length 0
11:59:54.280000 IP 127.0.0.1.55117 > 127.0.3.4.80: Flags [S], seq 980889214, win 1024, options [mss 1460], length 0
11:59:54.330000 IP 127.0.0.1.55117 > 127.0.4.4.80: Flags [S], seq 980889214, win 1024, options [mss 1460], length 0
11:59:54.380000 IP 127.0.0.1.55117 > 127.0.5.4.80: Flags [S], seq 980889214, win 1024, options [mss 1460], length 0
11:59:54.430000 IP 127.0.0.1.55117 > 127.0.6.4.80: Flags [S], seq 980889214, win 1024, options [mss 1460], length 0
11:59:54.480000 IP 127.0.0.1.55117 > 127.0.7.4.80: Flags [S], seq 980889214, win 1024, options [mss 1460], length 0
11:59:54.530000 IP 127.0.0.1.55117 > 127.0.8.4.80: Flags [S], seq 980889214, win 1024, options [mss 1460], length 0
11:59:54.580000 IP 127.0.0.1.55117 > 127.0.9.4.80: Flags [S], seq 980889214, win 1024, options [mss 1460], length 0
11:59:54.630000 IP 127.0.0.1.55117 > 127.0.10.4.80: Flags [S], seq 980889214, win 1024, options [mss 1460], length 0


cliffjumper:snort-2.9.9.0-released byob$ ./bin/snort -c etc/ANNA.conf -r etc/ANNA.pcap -Acmg -q
01/22-11:59:54.630000  [**] [1:1000001:0] Syn scan [**] [Priority: 0] {TCP} 127.0.0.1:55117 -> 127.0.10.4:80
01/22-11:59:54.630000 00:00:00:00:00:00 -> 00:00:00:00:00:00 type:0x800 len:0x3A
127.0.0.1:55117 -> 127.0.10.4:80 TCP TTL:55 TOS:0x0 ID:21861 IpLen:20 DgmLen:44
******S* Seq: 0x3A772E7E  Ack: 0x0  Win: 0x400  TcpLen: 24
TCP Options (1) => MSS: 1460

=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+



ipvar HOME_NET 127.0.0.0/16

alert tcp any any -> $HOME_NET 80 ( \
msg:"Syn scan"; \
flags:S; \
  detection_filter:track by_src, count 10, seconds 1; \
        sid:1000001; )


I tried on 2.9.8.3 and on 2.9.9 and it works on both.


Hope this helps!




Albert Lewis
ENGINEER.SOFTWARE ENGINEERING
SOURCEfire, Inc. now part of Cisco
Email: allewi () cisco com<mailto:allewi () cisco com>

From: allewi <allewi () cisco com<mailto:allewi () cisco com>>
Date: Thursday, January 19, 2017 at 4:51 PM
To: Anna Kowalska <annak.koval () gmail com<mailto:annak.koval () gmail com>>
Cc: 'snort-users' <snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>>
Subject: Re: [Snort-users] detection_filter not working

Here one with a detection filter to get you started.


ALLEWI-M-8257:snort-2.9.8.3 allewi$ ./bin/snort -c etc/scan.conf -r etc/scan.pcap -Acmg -k none -q
12/02-08:42:23.035169  [**] [1:1000001:0] Possible ACK SCAN reply or RST scan [**] [Priority: 0] {TCP} 127.0.0.1:49156 
-> 127.0.0.1:34001
12/02-08:42:23.035169 00:00:00:00:00:00 -> 00:00:00:00:00:00 type:0x800 len:0x36
127.0.0.1:49156 -> 127.0.0.1:34001 TCP TTL:64 TOS:0x0 ID:25774 IpLen:20 DgmLen:40 DF
*****R** Seq: 0x522CDFB6  Ack: 0x0  Win: 0x0  TcpLen: 20

=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+


Uses this:

alert tcp any any -> any any ( \
        msg:"Possible ACK SCAN reply or RST scan"; \
        flags:R; \
        detection_filter:track by_src, count 20, seconds 3; \
        sid:1000001; )



Albert Lewis
ENGINEER.SOFTWARE ENGINEERING
SOURCEfire, Inc. now part of Cisco
Email: allewi () cisco com<mailto:allewi () cisco com>

From: "Russ Combs (rucombs)" <rucombs () cisco com<mailto:rucombs () cisco com>>
Date: Thursday, January 19, 2017 at 4:01 PM
To: 'snort-users' <snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>>
Subject: Re: [Snort-users] detection_filter not working

What is the original rule you had with threshold?

On 1/19/17 3:40 PM, Anna Kowalska wrote:
Hi,

Fatema, I tried it, but it didn't work. Joel gave me a suggestion that maybe my version of Snort (2.9.8.3) has a bug 
with detection_filter. After I finish working with my current project I will upgrade to 2.9.9 version and check if the 
problem will be gone.

2017-01-19 12:05 GMT+01:00 Al Lewis (allewi) <allewi () cisco com<mailto:allewi () cisco com>>:
Hello,

Did you get this working?


Albert Lewis
ENGINEER.SOFTWARE ENGINEERING
SOURCEfire, Inc. now part of Cisco
Email: allewi () cisco com<mailto:allewi () cisco com>

From: Anna Kowalska <annak.koval () gmail com<mailto:annak.koval () gmail com>>
Date: Saturday, January 14, 2017 at 8:20 AM
To: 'snort-users' <snort-users () lists sourceforge net<mailto:snort-users () lists sourceforge net>>
Subject: [Snort-users] detection_filter not working

Hi all,

I am struggling with making one rule work. I want to set alarm when snort detects too much of syn packets (possible tcp 
syn flood) and it works when I used threshold option in rule. Then I tried it with detection_filter and it doesn't give 
any alarm.
Here is the rule I wrote in my local.rules file:

alert tcp any any -> $HOME_NET 80 (msg:"syn flood attempt"; flags:S; classtype:attempted-dos; detection_filter: track 
by_src, count 20, seconds 1; sid: 1000024;)

I proceed with hping3, but snort generated no output. Please tell me what am I doing wrong, maybe I forgot to attach 
something to configurtion, but I really have no idea what could it be..

commandline: snort -i eth0 -c /etc/snort/snort.conf -A console

configuration file:
###################################################
# Step #3: Configure the base detection engine.  For more information, see  README.decode
###################################################

# Configure PCRE match limitations
config pcre_match_limit: 3500
config pcre_match_limit_recursion: 1500

# Configure the detection engine  See the Snort Manual, Configuring Snort - Includes - Config
config detection: search-method ac-split search-optimize max-pattern-len 20

# Configure the event queue.  For more information, see README.event_queue
config event_queue: max_queue 8 log 5 order_events content_length

###################################################
## Configure GTP if it is to be used.
## For more information, see README.GTP
####################################################

# config enable_gtp

###################################################
# Per packet and rule latency enforcement
# For more information see README.ppm
###################################################

# Per Packet latency configuration
#config ppm: max-pkt-time 250, \
#   fastpath-expensive-packets, \
#   pkt-log

# Per Rule latency configuration
#config ppm: max-rule-time 200, \
#   threshold 3, \
#   suspend-expensive-rules, \
#   suspend-timeout 20, \
#   rule-log alert

###################################################
# Configure Perf Profiling for debugging
# For more information see README.PerfProfiling
###################################################

#config profile_rules: print all, sort avg_ticks
#config profile_preprocs: print all, sort avg_ticks

###################################################
# Configure protocol aware flushing
# For more information see README.stream5
###################################################
config paf_max: 16000

###################################################
# Step #4: Configure dynamic loaded libraries.
# For more information, see Snort Manual, Configuring Snort - Dynamic Modules
###################################################

# path to dynamic preprocessor libraries
dynamicpreprocessor directory /usr/local/lib/snort_dynamicpreprocessor/

# path to base preprocessor engine
dynamicengine /usr/local/lib/snort_dynamicengine/libsf_engine.so

# path to dynamic rules libraries
dynamicdetection directory /usr/local/lib/snort_dynamicrules

###################################################
# Step #5: Configure preprocessors
# For more information, see the Snort Manual, Configuring Snort - Preprocessors
###################################################

# GTP Control Channle Preprocessor. For more information, see README.GTP
# preprocessor gtp: ports { 2123 3386 2152 }

# Inline packet normalization. For more information, see README.normalize
# Does nothing in IDS mode
preprocessor normalize_ip4
preprocessor normalize_tcp: block, rsv, pad, urp, req_urg, req_pay, req_urp, ips, ecn stream
preprocessor normalize_icmp4
preprocessor normalize_ip6
preprocessor normalize_icmp6

# Target-based IP defragmentation.  For more inforation, see README.frag3
preprocessor frag3_global: max_frags 65536
preprocessor frag3_engine: policy windows detect_anomalies overlap_limit 10 min_fragment_length 100 timeout 180

# Target-Based stateful inspection/stream reassembly.  For more inforation, see README.stream5
preprocessor stream5_global: track_tcp yes, \
   track_udp yes, \
   track_icmp no, \
   max_tcp 262144, \
   max_udp 131072, \
   max_active_responses 2, \
   min_response_seconds 5

preprocessor stream5_tcp: policy windows, detect_anomalies, require_3whs 180, \
   overlap_limit 10, small_segments 3 bytes 150, timeout 180, \
    ports client 21 22 23 25 42 53 70 79 109 110 111 113 119 135 136 137 139 143 \
        161 445 513 514 587 593 691 1433 1521 1741 2100 3306 6070 6665 6666 6667 6668 6669 \
        7000 8181 32770 32771 32772 32773 32774 32775 32776 32777 32778 32779, \
    ports both 36 80 81 82 83 84 85 86 87 88 89 90 110 311 383 443 465 563 555 591 593 631 636 801 808 818 901 972 989 
992 993 994 995 1158 1220 1414 1533 1741 1830 1942 2231 2301 2381 2578 2809 2980 3029 3037 3057 3128 3443 3702 4000 
4343 4848 5000 5117 5250 5450 5600 5814 6080 6173 6988 7907 7000 7001 7005 7071 7144 7145 7510 7802 7770 7777 7778 7779 
\
        7801 7900 7901 7902 7903 7904 7905 7906 7908 7909 7910 7911 7912 7913 7914 7915 7916 \
        7917 7918 7919 7920 8000 8001 8008 8014 8015 8020 8028 8040 8080 8081 8082 8085 8088 8090 8118 8123 8180 8181 
8182 8222 8243 8280 8300 8333 8344 8400 8443 8500 8509 8787 8800 8888 8899 8983 9000 9002 9060 9080 9090 9091 9111 9290 
9443 9447 9710 9788 9999 10000 11371 12601 13014 15489 19980 29991 33300 34412 34443 34444 40007 41080 44449 50000 
50002 51423 53331 55252 55555 56712
preprocessor stream5_icmp: timeout 30
preprocessor stream5_udp: timeout 180

# performance statistics.  For more information, see the Snort Manual, Configuring Snort - Preprocessors - Performance 
Monitor
# preprocessor perfmonitor: time 300 file /var/snort/snort.stats pktcnt 10000

# HTTP normalization and anomaly detection.  For more information, see README.http_inspect
preprocessor http_inspect: global iis_unicode_map unicode.map 1252 compress_depth 65535 decompress_depth 65535
preprocessor http_inspect_server: server default \
    http_methods { GET POST PUT SEARCH MKCOL COPY MOVE LOCK UNLOCK NOTIFY POLL BCOPY BDELETE BMOVE LINK UNLINK OPTIONS 
HEAD DELETE TRACE TRACK CONNECT SOURCE SUBSCRIBE UNSUBSCRIBE PROPFIND PROPPATCH BPROPFIND BPROPPATCH RPC_CONNECT 
PROXY_SUCCESS BITS_POST CCM_POST SMS_POST RPC_IN_DATA RPC_OUT_DATA RPC_ECHO_DATA } \
    chunk_length 500000 \
    server_flow_depth 0 \
    client_flow_depth 0 \
    post_depth 65495 \
    oversize_dir_length 500 \
    max_header_length 750 \
    max_headers 100 \
    max_spaces 200 \
    small_chunk_length { 10 5 } \
    ports { 36 80 81 82 83 84 85 86 87 88 89 90 311 383 555 591 593 631 801 808 818 901 972 1158 1220 1414 1533 1741 
1830 1942 2231 2301 2381 2578 2809 2980 3029 3037 3057 3128 3443 3702 4000 4343 4848 5000 5117 5250 5450 5600 5814 6080 
6173 6988 7000 7001 7005 7071 7144 7145 7510 7770 7777 7778 7779 8000 8001 8008 8014 8015 8020 8028 8040 8080 8081 8082 
8085 8088 8090 8118 8123 8180 8181 8182 8222 8243 8280 8300 8333 8344 8400 8443 8500 8509 8787 8800 8888 8899 8983 9000 
9002 9060 9080 9090 9091 9111 9290 9443 9447 9710 9788 9999 10000 11371 12601 13014 15489 19980 29991 33300 34412 34443 
34444 40007 41080 44449 50000 50002 51423 53331 55252 55555 56712 } \
    non_rfc_char { 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07 } \
    enable_cookie \
    extended_response_inspection \
    inspect_gzip \
    normalize_utf \
    unlimited_decompress \
    normalize_javascript \
    apache_whitespace no \
    ascii no \
    bare_byte no \
    directory no \
    double_decode no \
    iis_backslash no \
    iis_delimiter no \
    iis_unicode no \
    multi_slash no \
    utf_8 no \
    u_encode yes \
    webroot no

# ONC-RPC normalization and anomaly detection.  For more information, see the Snort Manual, Configuring Snort - 
Preprocessors - RPC Decode
preprocessor rpc_decode: 111 32770 32771 32772 32773 32774 32775 32776 32777 32778 32779 no_alert_multiple_requests 
no_alert_large_fragments no_alert_incomplete

# Back Orifice detection.
preprocessor bo

# FTP / Telnet normalization and anomaly detection.  For more information, see README.ftptelnet
preprocessor ftp_telnet: global inspection_type stateful encrypted_traffic no check_encrypted
preprocessor ftp_telnet_protocol: telnet \
    ayt_attack_thresh 20 \
    normalize ports { 23 } \
    detect_anomalies
preprocessor ftp_telnet_protocol: ftp server default \
    def_max_param_len 100 \
    ports { 21 2100 3535 } \
    telnet_cmds yes \
    ignore_telnet_erase_cmds yes \
    ftp_cmds { ABOR ACCT ADAT ALLO APPE AUTH CCC CDUP } \
    ftp_cmds { CEL CLNT CMD CONF CWD DELE ENC EPRT } \
    ftp_cmds { EPSV ESTA ESTP FEAT HELP LANG LIST LPRT } \
    ftp_cmds { LPSV MACB MAIL MDTM MIC MKD MLSD MLST } \
    ftp_cmds { MODE NLST NOOP OPTS PASS PASV PBSZ PORT } \
    ftp_cmds { PROT PWD QUIT REIN REST RETR RMD RNFR } \
    ftp_cmds { RNTO SDUP SITE SIZE SMNT STAT STOR STOU } \
    ftp_cmds { STRU SYST TEST TYPE USER XCUP XCRC XCWD } \
    ftp_cmds { XMAS XMD5 XMKD XPWD XRCP XRMD XRSQ XSEM } \
    ftp_cmds { XSEN XSHA1 XSHA256 } \
    alt_max_param_len 0 { ABOR CCC CDUP ESTA FEAT LPSV NOOP PASV PWD QUIT REIN STOU SYST XCUP XPWD } \
    alt_max_param_len 200 { ALLO APPE CMD HELP NLST RETR RNFR STOR STOU XMKD } \
    alt_max_param_len 256 { CWD RNTO } \
    alt_max_param_len 400 { PORT } \
    alt_max_param_len 512 { SIZE } \
    chk_str_fmt { ACCT ADAT ALLO APPE AUTH CEL CLNT CMD } \
    chk_str_fmt { CONF CWD DELE ENC EPRT EPSV ESTP HELP } \
    chk_str_fmt { LANG LIST LPRT MACB MAIL MDTM MIC MKD } \
    chk_str_fmt { MLSD MLST MODE NLST OPTS PASS PBSZ PORT } \
    chk_str_fmt { PROT REST RETR RMD RNFR RNTO SDUP SITE } \
    chk_str_fmt { SIZE SMNT STAT STOR STRU TEST TYPE USER } \
    chk_str_fmt { XCRC XCWD XMAS XMD5 XMKD XRCP XRMD XRSQ } \
    chk_str_fmt { XSEM XSEN XSHA1 XSHA256 } \
    cmd_validity ALLO < int [ char R int ] > \
    cmd_validity EPSV < [ { char 12 | char A char L char L } ] > \
    cmd_validity MACB < string > \
    cmd_validity MDTM < [ date nnnnnnnnnnnnnn[.n[n[n]]] ] string > \
    cmd_validity MODE < char ASBCZ > \
    cmd_validity PORT < host_port > \
    cmd_validity PROT < char CSEP > \
    cmd_validity STRU < char FRPO [ string ] > \
    cmd_validity TYPE < { char AE [ char NTC ] | char I | char L [ number ] } >
preprocessor ftp_telnet_protocol: ftp client default \
    max_resp_len 256 \
    bounce yes \
    ignore_telnet_erase_cmds yes \
    telnet_cmds yes


# SMTP normalization and anomaly detection.  For more information, see README.SMTP
preprocessor smtp: ports { 25 465 587 691 } \
    inspection_type stateful \
    b64_decode_depth 0 \
    qp_decode_depth 0 \
    bitenc_decode_depth 0 \
    uu_decode_depth 0 \
    log_mailfrom \
    log_rcptto \
    log_filename \
    log_email_hdrs \
    normalize cmds \
    normalize_cmds { ATRN AUTH BDAT CHUNKING DATA DEBUG EHLO EMAL ESAM ESND ESOM ETRN EVFY } \
    normalize_cmds { EXPN HELO HELP IDENT MAIL NOOP ONEX QUEU QUIT RCPT RSET SAML SEND SOML } \
    normalize_cmds { STARTTLS TICK TIME TURN TURNME VERB VRFY X-ADAT X-DRCP X-ERCP X-EXCH50 } \
    normalize_cmds { X-EXPS X-LINK2STATE XADR XAUTH XCIR XEXCH50 XGEN XLICENSE XQUE XSTA XTRN XUSR } \
    max_command_line_len 512 \
    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 DATA RSET QUIT ONEX QUEU STARTTLS TICK TIME TURNME 
VERB X-EXPS X-LINK2STATE XADR XAUTH XCIR XEXCH50 XGEN XLICENSE XQUE XSTA XTRN XUSR } \
    valid_cmds { ATRN AUTH BDAT CHUNKING DATA DEBUG EHLO EMAL ESAM ESND ESOM ETRN EVFY } \
    valid_cmds { EXPN HELO HELP IDENT MAIL NOOP ONEX QUEU QUIT RCPT RSET SAML SEND SOML } \
    valid_cmds { STARTTLS TICK TIME TURN TURNME VERB VRFY X-ADAT X-DRCP X-ERCP X-EXCH50 } \
    valid_cmds { X-EXPS X-LINK2STATE XADR XAUTH XCIR XEXCH50 XGEN XLICENSE XQUE XSTA XTRN XUSR } \
    xlink2state { enabled }

# Portscan detection.  For more information, see README.sfportscan
 preprocessor sfportscan: proto  { all } scan_type { all }  memcap { 10000000 } sense_level { high } logfile { 
/var/log/snort/PORTSCAN.log } detect_ack_scans

# ARP spoof detection.  For more information, see the Snort Manual - Configuring Snort - Preprocessors - ARP Spoof 
Preprocessor
# preprocessor arpspoof
# preprocessor arpspoof_detect_host: 192.168.40.1 f0:0f:00:f0:0f:00

# SSH anomaly detection.  For more information, see README.ssh
preprocessor ssh: server_ports { 22 } \
                  autodetect \
                  max_client_bytes 19600 \
                  max_encrypted_packets 20 \
                  max_server_version_len 100 \
                  enable_respoverflow enable_ssh1crc32 \
                  enable_srvoverflow enable_protomismatch

# SMB / DCE-RPC normalization and anomaly detection.  For more information, see README.dcerpc2
preprocessor dcerpc2: memcap 102400, events [co ]
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, smb_invalid_shares ["C$", "D$", "ADMIN$"]

# DNS anomaly detection.  For more information, see README.dns
preprocessor dns: ports { 53 } enable_rdata_overflow

# SSL anomaly detection and traffic bypass.  For more information, see README.ssl
preprocessor ssl: ports { 443 465 563 636 989 992 993 994 995 5061 7801 7802 7900 7901 7902 7903 7904 7905 7906 7907 
7908 7909 7910 7911 7912 7913 7914 7915 7916 7917 7918 7919 7920 }, trustservers, noinspect_encrypted

# SDF sensitive data preprocessor.  For more information see README.sensitive_data
preprocessor sensitive_data: alert_threshold 25

# SIP Session Initiation Protocol preprocessor.  For more information see README.sip
preprocessor sip: max_sessions 40000, \
   ports { 5060 5061 5600 }, \
   methods { invite \
             cancel \
             ack \
             bye \
             register \
             options \
             refer \
             subscribe \
             update \
             join \
             info \
             message \
             notify \
             benotify \
             do \
             qauth \
             sprack \
             publish \
             service \
             unsubscribe \
             prack }, \
   max_uri_len 512, \
   max_call_id_len 80, \
   max_requestName_len 20, \
   max_from_len 256, \
   max_to_len 256, \
   max_via_len 1024, \
   max_contact_len 512, \
   max_content_len 2048

# IMAP preprocessor.  For more information see README.imap
preprocessor imap: \
   ports { 143 } \
   b64_decode_depth 0 \
   qp_decode_depth 0 \
   bitenc_decode_depth 0 \
   uu_decode_depth 0

# POP preprocessor. For more information see README.pop
preprocessor pop: \
   ports { 110 } \
   b64_decode_depth 0 \
   qp_decode_depth 0 \
   bitenc_decode_depth 0 \
   uu_decode_depth 0

# Modbus preprocessor. For more information see README.modbus
preprocessor modbus: ports { 502 }

# DNP3 preprocessor. For more information see README.dnp3
preprocessor dnp3: ports { 20000 } \
   memcap 262144 \
   check_crc

# Reputation preprocessor. For more information see README.reputation
preprocessor reputation: \
   memcap 500, \
   priority whitelist, \
   nested_ip inner, \
   whitelist $WHITE_LIST_PATH/white_list.rules, \
   blacklist $BLACK_LIST_PATH/black_list.rules

###################################################
# Step #6: Configure output plugins
# For more information, see Snort Manual, Configuring Snort - Output Modules
###################################################

# unified2
# Recommended for most installs
# output unified2: filename merged.log, limit 128, nostamp, mpls_event_types, vlan_event_types

# Additional configuration for specific types of installs
# output alert_unified2: filename snort.alert, limit 128, nostamp
# output log_unified2: filename snort.log, limit 128, nostamp

# syslog
# output alert_syslog: LOG_AUTH LOG_ALERT

# pcap
# output log_tcpdump: tcpdump.log

# metadata reference data.  do not modify these lines
include classification.config
include reference.config


###################################################
# Step #7: Customize your rule set
# For more information, see Snort Manual, Writing Snort Rules
#
# NOTE: All categories are enabled in this conf file
###################################################

# site specific rules
include $RULE_PATH/local.rules

include $RULE_PATH/app-detect.rules
include $RULE_PATH/attack-responses.rules
include $RULE_PATH/backdoor.rules
include $RULE_PATH/bad-traffic.rules
include $RULE_PATH/blacklist.rules
include $RULE_PATH/botnet-cnc.rules
include $RULE_PATH/browser-chrome.rules
include $RULE_PATH/browser-firefox.rules
include $RULE_PATH/browser-ie.rules
include $RULE_PATH/browser-other.rules
include $RULE_PATH/browser-plugins.rules
include $RULE_PATH/browser-webkit.rules
include $RULE_PATH/chat.rules
include $RULE_PATH/content-replace.rules
include $RULE_PATH/ddos.rules
include $RULE_PATH/dns.rules
include $RULE_PATH/dos.rules
include $RULE_PATH/experimental.rules
include $RULE_PATH/exploit-kit.rules
include $RULE_PATH/exploit.rules
include $RULE_PATH/file-executable.rules
include $RULE_PATH/file-flash.rules
include $RULE_PATH/file-identify.rules
include $RULE_PATH/file-image.rules
include $RULE_PATH/file-java.rules
include $RULE_PATH/file-multimedia.rules
include $RULE_PATH/file-office.rules
include $RULE_PATH/file-other.rules
include $RULE_PATH/file-pdf.rules
include $RULE_PATH/finger.rules
include $RULE_PATH/ftp.rules
include $RULE_PATH/icmp-info.rules
include $RULE_PATH/icmp.rules
include $RULE_PATH/imap.rules
include $RULE_PATH/indicator-compromise.rules
include $RULE_PATH/indicator-obfuscation.rules
include $RULE_PATH/indicator-scan.rules
include $RULE_PATH/indicator-shellcode.rules
include $RULE_PATH/info.rules
include $RULE_PATH/malware-backdoor.rules
include $RULE_PATH/malware-cnc.rules
include $RULE_PATH/malware-other.rules
include $RULE_PATH/malware-tools.rules
include $RULE_PATH/misc.rules
include $RULE_PATH/multimedia.rules
include $RULE_PATH/mysql.rules
include $RULE_PATH/netbios.rules
include $RULE_PATH/nntp.rules
include $RULE_PATH/oracle.rules
include $RULE_PATH/os-linux.rules
include $RULE_PATH/os-mobile.rules
include $RULE_PATH/os-other.rules
include $RULE_PATH/os-solaris.rules
include $RULE_PATH/os-windows.rules
include $RULE_PATH/other-ids.rules
include $RULE_PATH/p2p.rules
include $RULE_PATH/phishing-spam.rules
include $RULE_PATH/policy-multimedia.rules
include $RULE_PATH/policy-other.rules
include $RULE_PATH/policy.rules
include $RULE_PATH/policy-social.rules
include $RULE_PATH/policy-spam.rules
include $RULE_PATH/pop2.rules
include $RULE_PATH/pop3.rules
include $RULE_PATH/protocol-dns.rules
include $RULE_PATH/protocol-finger.rules
include $RULE_PATH/protocol-ftp.rules
include $RULE_PATH/protocol-icmp.rules
include $RULE_PATH/protocol-imap.rules
include $RULE_PATH/protocol-nntp.rules
include $RULE_PATH/protocol-other.rules
include $RULE_PATH/protocol-pop.rules
include $RULE_PATH/protocol-rpc.rules
include $RULE_PATH/protocol-scada.rules
include $RULE_PATH/protocol-services.rules
include $RULE_PATH/protocol-snmp.rules
include $RULE_PATH/protocol-telnet.rules
include $RULE_PATH/protocol-tftp.rules
include $RULE_PATH/protocol-voip.rules
include $RULE_PATH/pua-adware.rules
include $RULE_PATH/pua-other.rules
include $RULE_PATH/pua-p2p.rules
include $RULE_PATH/pua-toolbars.rules
include $RULE_PATH/rpc.rules
include $RULE_PATH/rservices.rules
include $RULE_PATH/scada.rules
include $RULE_PATH/scan.rules
include $RULE_PATH/server-apache.rules
include $RULE_PATH/server-iis.rules
include $RULE_PATH/server-mail.rules
include $RULE_PATH/server-mssql.rules
include $RULE_PATH/server-mysql.rules
include $RULE_PATH/server-oracle.rules
include $RULE_PATH/server-other.rules
include $RULE_PATH/server-samba.rules
include $RULE_PATH/server-webapp.rules
include $RULE_PATH/shellcode.rules
include $RULE_PATH/smtp.rules
include $RULE_PATH/snmp.rules
include $RULE_PATH/specific-threats.rules
include $RULE_PATH/spyware-put.rules
include $RULE_PATH/sql.rules
include $RULE_PATH/telnet.rules
include $RULE_PATH/tftp.rules
include $RULE_PATH/virus.rules
include $RULE_PATH/voip.rules
include $RULE_PATH/web-activex.rules
include $RULE_PATH/web-attacks.rules
include $RULE_PATH/web-cgi.rules
include $RULE_PATH/web-client.rules
include $RULE_PATH/web-coldfusion.rules
include $RULE_PATH/web-frontpage.rules
include $RULE_PATH/web-iis.rules
include $RULE_PATH/web-misc.rules
include $RULE_PATH/web-php.rules
include $RULE_PATH/x11.rules

#Include MyRULES

include $RULE_PATH/mytest.rules
include $RULE_PATH/mylog.rules

###################################################
# Step #8: Customize your preprocessor and decoder alerts
# For more information, see README.decoder_preproc_rules
###################################################

# decoder and preprocessor event rules
 include $PREPROC_RULE_PATH/preprocessor.rules
 include $PREPROC_RULE_PATH/decoder.rules
 include $PREPROC_RULE_PATH/sensitive-data.rules

###################################################
# Step #9: Customize your Shared Object Snort Rules
# For more information, see http://vrt-blog.snort.org/2009/01/using-vrt-certified-shared-object-rules.html
###################################################

# dynamic library rules
# include $SO_RULE_PATH/browser-ie.rules
# include $SO_RULE_PATH/browser-other.rules
# include $SO_RULE_PATH/exploit-kit.rules
# include $SO_RULE_PATH/file-flash.rules
# include $SO_RULE_PATH/file-image.rules
# include $SO_RULE_PATH/file-java.rules
# include $SO_RULE_PATH/file-multimedia.rules
# include $SO_RULE_PATH/file-office.rules
# include $SO_RULE_PATH/file-other.rules
# include $SO_RULE_PATH/file-pdf.rules
# include $SO_RULE_PATH/indicator-shellcode.rules
# include $SO_RULE_PATH/malware-cnc.rules
# include $SO_RULE_PATH/malware-other.rules
# include $SO_RULE_PATH/netbios.rules
# include $SO_RULE_PATH/os-linux.rules
# include $SO_RULE_PATH/os-other.rules
# include $SO_RULE_PATH/os-windows.rules
# include $SO_RULE_PATH/policy-social.rules
# include $SO_RULE_PATH/protocol-dns.rules
# include $SO_RULE_PATH/protocol-nntp.rules
# include $SO_RULE_PATH/protocol-other.rules
# include $SO_RULE_PATH/protocol-snmp.rules
# include $SO_RULE_PATH/protocol-voip.rules
# include $SO_RULE_PATH/pua-p2p.rules
# include $SO_RULE_PATH/server-apache.rules
# include $SO_RULE_PATH/server-iis.rules
# include $SO_RULE_PATH/server-mail.rules
# include $SO_RULE_PATH/server-mysql.rules
# include $SO_RULE_PATH/server-oracle.rules
# include $SO_RULE_PATH/server-other.rules
# include $SO_RULE_PATH/server-webapp.rules

# legacy dynamic library rule files
# include $SO_RULE_PATH/bad-traffic.rules
# include $SO_RULE_PATH/browser-ie.rules
# include $SO_RULE_PATH/chat.rules
# include $SO_RULE_PATH/dos.rules
# include $SO_RULE_PATH/exploit.rules
# include $SO_RULE_PATH/file-flash.rules
# include $SO_RULE_PATH/icmp.rules
# include $SO_RULE_PATH/imap.rules
# include $SO_RULE_PATH/misc.rules
# include $SO_RULE_PATH/multimedia.rules
# include $SO_RULE_PATH/netbios.rules
# include $SO_RULE_PATH/nntp.rules
# include $SO_RULE_PATH/p2p.rules
# include $SO_RULE_PATH/smtp.rules
# include $SO_RULE_PATH/snmp.rules
# include $SO_RULE_PATH/specific-threats.rules
# include $SO_RULE_PATH/web-activex.rules
# include $SO_RULE_PATH/web-client.rules
# include $SO_RULE_PATH/web-iis.rules
# include $SO_RULE_PATH/web-misc.rules

# Event thresholding or suppression commands. See threshold.conf
include threshold.conf

rate_filter \
        gen_id 135, sig_id 1, \
        track by_src, \
        count 100, seconds 5, \
       new_action alert, timeout 10











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Current thread:

detection_filter not working Anna Kowalska (Jan 14)
- Re: detection_filter not working Joel Esler (jesler) (Jan 14)
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  - Re: detection_filter not working Anna Kowalska (Jan 19)
    - Re: detection_filter not working Russ (Jan 19)
    - Re: detection_filter not working Al Lewis (allewi) (Jan 19)
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    - Re: detection_filter not working Joel Esler (jesler) (Jan 19)
    - Re: detection_filter not working Al Lewis (allewi) (Jan 22)
    - Re: detection_filter not working Anna Kowalska (Jan 23)
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