[Snort-users] HTTP reassembly problem

João Lima joao.pedro.paulino.lima at ...11827...
Wed Oct 10 11:13:32 EDT 2012


No, I never said that. For me is alerting perfectly also.

My problem is that I want it to alert in the reassembled packet resulting
from stream5/http_inspect/paf.

In the end, what I want is to receive an unified2Packet with the complete
HTTP POST and not only part of the HTTP POST.

Is it possible anyway??

Best regards,

João Lima

2012/10/10 Joel Esler <jesler at ...1935...>

> Are you saying it's not alerting?
>
> It's working for me perfectly.  Make sure you are using the snort.conf
> from the VRT, current versions are here:
>
> http://www.snort.org/vrt/snort-conf-configurations/
>
> That's what I am testing against.
>
>
> On Oct 10, 2012, at 4:52 AM, João Lima <joao.pedro.paulino.lima at ...13610...7...>
> wrote:
>
> Yes I can.
>
> alert tcp any any -> 192.168.8.177 8081 (msg:"action type 50";
> sid:1000050; content:"|3c 78 73 64 3a 53 74 61 74 75 73 55 70 64 61 74 65
> 3e|";)
>
> Sorry. Should have sent the complete rule the first time.
>
> Best regards,
>
> João Lima
>
> 2012/10/9 Joel Esler <jesler at ...1935...>
>
>> I see the pcap, but I don't see a complete rule to test with.
>>
>> Can you provide that?
>>
>>
>> On Oct 9, 2012, at 5:19 PM, João Lima <joao.pedro.paulino.lima at ...13610...7...>
>> wrote:
>>
>> Hello,
>>
>> Does anyone can help me with this issue??
>>
>> Best regards,
>>
>> João Pedro Lima
>>
>> 2012/10/9 João Lima <joao.pedro.paulino.lima at ...11827...>
>>
>>> Sure,
>>>
>>> The pcap contains the complete HTTP session of the request. What I
>>> expect to obtain is packet 4 and 5 in just one "pseudo-packet" that
>>> represent the complete HTTP request.
>>>
>>> Best regards,
>>>
>>> João Pedro Lima
>>>
>>>
>>> 2012/10/9 Russ Combs <rcombs at ...1935...>
>>>
>>>> Can you send a pcap?
>>>>
>>>> On Tue, Oct 9, 2012 at 10:29 AM, João Lima <
>>>> joao.pedro.paulino.lima at ...11827...> wrote:
>>>>
>>>>> Hello,
>>>>>
>>>>> I'm having a little problem with the reassembly of HTTP PDUs...
>>>>>
>>>>> My scenario is the following: I have one HTTP POST that is spread
>>>>> across  two TCP packets... What I'm trying to do is to find one message an
>>>>> alert when it is found in order to be able to process it in a custom
>>>>> system...
>>>>>
>>>>> However, I've already tried almost every configuration of stream5 and
>>>>> http_inspect, and I'm only able to retrieve the first packet of the two
>>>>> that compose the HTTP POST... All the documentation says it is possible
>>>>> that Snort is able to reassemble  packets, but I've found no information
>>>>> about its ability to return the send a unified2Packet with the reassembled
>>>>> packet...
>>>>>
>>>>> The HTTP server is running on port 8081...
>>>>>
>>>>> Can you tell me if I'm missing something either on the snort
>>>>> configuration or in the detection rule??
>>>>>
>>>>> Rule used to detect the packet:
>>>>>
>>>>> "alert tcp any any -> 192.168.8.177 any (msg:"Action type 50";
>>>>> sid:1000050; content:"|3c 78 73 64 .......|";)"
>>>>>
>>>>> My snort.conf is below:
>>>>>
>>>>> # Setup the network addresses you are protecting
>>>>> ipvar HOME_NET [192.168.0.0/16,10.0.0.0/8,172.16.0.0/12]
>>>>>
>>>>> # Set up the external network addresses. Leave as "any" in most
>>>>> situations
>>>>> ipvar EXTERNAL_NET any
>>>>>
>>>>> # List of DNS servers on your network
>>>>> ipvar DNS_SERVERS $HOME_NET
>>>>>
>>>>> # List of SMTP servers on your network
>>>>> ipvar SMTP_SERVERS $HOME_NET
>>>>>
>>>>> # List of web servers on your network
>>>>> ipvar HTTP_SERVERS $HOME_NET
>>>>>
>>>>>  # List of sql servers on your network
>>>>> ipvar SQL_SERVERS $HOME_NET
>>>>>
>>>>> # List of telnet servers on your network
>>>>> ipvar TELNET_SERVERS $HOME_NET
>>>>>
>>>>> # List of ssh servers on your network
>>>>> ipvar SSH_SERVERS $HOME_NET
>>>>>
>>>>> # List of ftp servers on your network
>>>>> ipvar FTP_SERVERS $HOME_NET
>>>>>
>>>>> # List of sip servers on your network
>>>>> ipvar SIP_SERVERS $HOME_NET
>>>>>
>>>>> # List of ports you run web servers on
>>>>> portvar HTTP_PORTS
>>>>> [80,81,311,591,593,901,1220,1414,1830,2301,2381,2809,3128,3702,4343,5250,7001,7145,7510,7777,7779,8000,8008,8014,8028,8080,8081,8088,8118,8123,8180,8181,8243,8280,8800,8888,8899,9080,9090,9091,9443,9999,11371,55555]
>>>>>
>>>>> # List of ports you want to look for SHELLCODE on.
>>>>> portvar SHELLCODE_PORTS !80
>>>>>
>>>>> # List of ports you might see oracle attacks on
>>>>> portvar ORACLE_PORTS 1024:
>>>>>
>>>>> # List of ports you want to look for SSH connections on:
>>>>> portvar SSH_PORTS 22
>>>>>
>>>>> # List of ports you run ftp servers on
>>>>> portvar FTP_PORTS [21,2100,3535]
>>>>>
>>>>> # List of ports you run SIP servers on
>>>>> portvar SIP_PORTS [5060,5061,5600]
>>>>>
>>>>> # List of file data ports for file inspection
>>>>> portvar FILE_DATA_PORTS [$HTTP_PORTS,110,143]
>>>>>
>>>>> # List of GTP ports for GTP preprocessor
>>>>> portvar GTP_PORTS [2123,2152,3386]
>>>>>
>>>>> # other variables, these should not be modified
>>>>> ipvar 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
>>>>> ]
>>>>>
>>>>> include /etc/nsm/CSIS/local.variables
>>>>>
>>>>> # Path to your rules files (this can be a relative path)
>>>>> # Note for Windows users:  You are advised to make this an absolute
>>>>> path,
>>>>> # such as:  c:\snort\rules
>>>>> var RULE_PATH /etc/nsm/rules
>>>>> var SO_RULE_PATH /etc/nsm/rules
>>>>> var PREPROC_RULE_PATH /etc/nsm/preproc_rules
>>>>>
>>>>> # If you are using reputation preprocessor set these
>>>>> # Currently there is a bug with relative paths, they are relative to
>>>>> where snort is
>>>>> # not relative to snort.conf like the above variables
>>>>> # This is completely inconsistent with how other vars work, BUG 89986
>>>>> # Set the absolute path appropriately
>>>>> var WHITE_LIST_PATH /etc/nsm/rules
>>>>> var BLACK_LIST_PATH /etc/nsm/rules
>>>>>
>>>>> ###################################################
>>>>> # Step #2: Configure the decoder.  For more information, see
>>>>> README.decode
>>>>> ###################################################
>>>>>
>>>>> # Stop generic decode events:
>>>>> config disable_decode_alerts
>>>>>
>>>>> # Stop Alerts on experimental TCP options
>>>>> config disable_tcpopt_experimental_alerts
>>>>>
>>>>> # Stop Alerts on obsolete TCP options
>>>>> config disable_tcpopt_obsolete_alerts
>>>>>
>>>>> # Stop Alerts on T/TCP alerts
>>>>> config disable_tcpopt_ttcp_alerts
>>>>>
>>>>> # Stop Alerts on all other TCPOption type events:
>>>>> config disable_tcpopt_alerts
>>>>>
>>>>> # Stop Alerts on invalid ip options
>>>>> config disable_ipopt_alerts
>>>>>
>>>>> # Alert if value in length field (IP, TCP, UDP) is greater th elength
>>>>> of the packet
>>>>> # config enable_decode_oversized_alerts
>>>>>
>>>>> # Same as above, but drop packet if in Inline mode (requires
>>>>> enable_decode_oversized_alerts)
>>>>> # config enable_decode_oversized_drops
>>>>>
>>>>> # Configure IP / TCP checksum mode
>>>>> config checksum_mode: all
>>>>>
>>>>> # Configure maximum number of flowbit references.  For more
>>>>> information, see README.flowbits
>>>>> # config flowbits_size: 64
>>>>>
>>>>> # Configure ports to ignore
>>>>> # config ignore_ports: tcp 21 6667:6671 1356
>>>>> # config ignore_ports: udp 1:17 53
>>>>>
>>>>> # Configure active response for non inline operation. For more
>>>>> information, see REAMDE.active
>>>>> # config response: eth0 attempts 2
>>>>>
>>>>> # Configure DAQ related options for inline operation. For more
>>>>> information, see README.daq
>>>>> #
>>>>> # config daq: <type>
>>>>> # config daq_dir: <dir>
>>>>> # config daq_mode: <mode>
>>>>> # config daq_var: <var>
>>>>> #
>>>>> # <type> ::= pcap | afpacket | dump | nfq | ipq | ipfw
>>>>> # <mode> ::= read-file | passive | inline
>>>>> # <var> ::= arbitrary <name>=<value passed to DAQ
>>>>> # <dir> ::= path as to where to look for DAQ module so's
>>>>>
>>>>> # Configure specific UID and GID to run snort as after dropping privs.
>>>>> For more information see snort -h command line options
>>>>> #
>>>>> # config set_gid:
>>>>> # config set_uid:
>>>>>
>>>>> # Configure default snaplen. Snort defaults to MTU of in use
>>>>> interface. For more information see README
>>>>> #
>>>>> # config snaplen:
>>>>> #
>>>>>
>>>>> # Configure default bpf_file to use for filtering what traffic reaches
>>>>> snort. For more information see snort -h command line options (-F)
>>>>> #
>>>>> # config bpf_file:
>>>>> #
>>>>>
>>>>> # Configure default log directory for snort to log to.  For more
>>>>> information see snort -h command line options (-l)
>>>>> #
>>>>> # config logdir:
>>>>>
>>>>>
>>>>> ###################################################
>>>>> # 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 3 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: 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 79 109 110 111 113 119 135 136 137
>>>>> 139 143 \
>>>>>         161 445 513 514 587 593 691 1433 1521 2100 3306 6070 6665 6666
>>>>> 6667 6668 6669 \
>>>>>         7000 8181 32770 32771 32772 32773 32774 32775 32776 32777
>>>>> 32778 32779, \
>>>>>     ports both 80 81 311 443 465 563 591 593 636 901 989 992 993 994
>>>>> 995 1220 1414 1830 2301 2381 2809 3128 3702 4343 5250 7907 7001 7145 7510
>>>>> 7802 7777 7779 \
>>>>>         7801 7900 7901 7902 7903 7904 7905 7906 7908 7909 7910 7911
>>>>> 7912 7913 7914 7915 7916 \
>>>>>         7917 7918 7919 7920 8000 8008 8014 8028 8080 8081 8088 8118
>>>>> 8123 8180 8243 8280 8800 8888 8899 9080 9090 9091 9443 9999 11371 55555
>>>>> preprocessor stream5_udp: timeout 180
>>>>>
>>>>> # performance statistics.  For more information, see the Snort Manual,
>>>>> Configuring Snort - Preprocessors - Performance Monitor
>>>>> preprocessor perfmonitor: time 300 file
>>>>> /nsm/sensor_data/onion-desktop-eth0/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 0 \
>>>>>     small_chunk_length { 10 5 } \
>>>>>     ports { 80 81 311 591 593 901 1220 1414 1830 2301 2381 2809 3128
>>>>> 3702 4343 5250 7001 7145 7510 7777 7779 8000 8008 8014 8028 8080 8081 8088
>>>>> 8118 8123 8180 8181 8243 8280 8800 8888 8899 9080 9090 9091 9443 9999 11371
>>>>> 55555 } \
>>>>>     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 } memcap { 10000000 }
>>>>> sense_level { low }
>>>>>
>>>>> # 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 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 snort.unified2, limit 128
>>>>>
>>>>> include /etc/nsm/CSIS/fifo.output
>>>>>
>>>>> # 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
>>>>>
>>>>> # database
>>>>> # output database: alert, <db_type>, user=<username>
>>>>> password=<password> test dbname=<name> host=<hostname>
>>>>> # output database: log, <db_type>, user=<username> password=<password>
>>>>> test dbname=<name> host=<hostname>
>>>>>
>>>>> # prelude
>>>>> # output alert_prelude
>>>>>
>>>>> # 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/specificationBased.rules
>>>>>
>>>>> # rules downloaded by PulledPork
>>>>> include $RULE_PATH/downloaded.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-sourcefire.blogspot.com/2009/01/using-vrt-certified-shared-object-rules.html
>>>>> ###################################################
>>>>>
>>>>> # dynamic library rules
>>>>> include $SO_RULE_PATH/so_rules.rules
>>>>>
>>>>> # Event thresholding or suppression commands. See threshold.conf
>>>>> include threshold.conf
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------------------------
>>>>> Don't let slow site performance ruin your business. Deploy New Relic
>>>>> APM
>>>>> Deploy New Relic app performance management and know exactly
>>>>> what is happening inside your Ruby, Python, PHP, Java, and .NET app
>>>>> Try New Relic at no cost today and get our sweet Data Nerd shirt too!
>>>>> http://p.sf.net/sfu/newrelic-dev2dev
>>>>> _______________________________________________
>>>>> Snort-users mailing list
>>>>> Snort-users at lists.sourceforge.net
>>>>> Go to this URL to change user options or unsubscribe:
>>>>> https://lists.sourceforge.net/lists/listinfo/snort-users
>>>>> Snort-users list archive:
>>>>> http://www.geocrawler.com/redir-sf.php3?list=snort-users
>>>>>
>>>>> Please visit http://blog.snort.org to stay current on all the latest
>>>>> Snort news!
>>>>>
>>>>
>>>>
>>>
>> <StatusUpdateSequence3.pcap>
>> ------------------------------------------------------------------------------
>>
>> Don't let slow site performance ruin your business. Deploy New Relic APM
>> Deploy New Relic app performance management and know exactly
>> what is happening inside your Ruby, Python, PHP, Java, and .NET app
>> Try New Relic at no cost today and get our sweet Data Nerd shirt too!
>>
>> http://p.sf.net/sfu/newrelic-dev2dev_______________________________________________
>> Snort-users mailing list
>> Snort-users at lists.sourceforge.net
>> Go to this URL to change user options or unsubscribe:
>> https://lists.sourceforge.net/lists/listinfo/snort-users
>> Snort-users list archive:
>> http://www.geocrawler.com/redir-sf.php3?list=snort-users
>>
>> Please visit http://blog.snort.org to stay current on all the latest
>> Snort news!
>>
>>
>>
>
>
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