Re: Fwd: Snort 'hangs'

["Matheus Condi'ez" <conma293 () gmail com>]

Hello all,

Hope everyone has had a good easter off, I cam back into work today hoping
that I would be able to say that now the rules are updated that my problem
of snort hanging has gone away and that to recreate the problem try running
snort with mismatched sid-msg.map to snort.rules from pulledpork.....
 however when I got back in today and I saw the U2 file hadnt been updated
in 2 days I knew my demons were still with me.

It seems almost certain that something inside snort is writing to an
unideal memory space and slowly using up snorts mem resource to the point
where it freezes up, again it refuses to be killed off with pkill or a
kill, --> it simply does not catch the kill-signal.. in fact Ubuntu knows
that snort is still running after an attempted kill as you can tab it up
and it will recognise snort as a running process.... my only method here is
to reboot the VM every (11 days this time), which as you can imagine, is
very unideal,

> From another system I can look at the traffic signature at the time of
snorts last write to U2.. interestingly (and it was easter to allow this
could occur), contrary to my last observations, snort has not frozen up at
a time of high-level traffic where in the past it has, in fact the last U2
write was at a time of relatively extremely low traffic, this leads me to
believe that it freezes up based on an eventual overload of a finite memory
store as opposed to not being able to handle high-loads of traffic.

even more interestingly, I have an identical (as it is a VM) snort instance
running in a different environment, much less traffic yes, but based on my
above theory the finite resource should eventually be depleted ... the only
difference between the two is the threshold - in the snort that freezes up
I have the following thresholds

##Snort that freezes##
suppress gen_id 119, sig_id 0
suppress gen_id 120, sig_id 0
suppress gen_id 129, sig_id 0

##Snort that doesnt freeze##
#suppress gen_id 119, sig_id 0
#suppress gen_id 120, sig_id 0
suppress gen_id 129, sig_id 0

Where 119 is http inspect client, 120 is server and 129 is Stream5...
Stream5 are the errors that I can see outputted from snort as she freezes
up on me as shown below


S5: Session exceeded configured max bytes to queue 1048576 using 1049064
bytes (client queue). 203.99.71.141 61473 --> 10.1.1.1 80 (0) : LWstate 0x1
LWFlags 0x402003
S5: Pruned session from cache that was using 1165227 bytes (stale/timeout).
203.99.71.141 61473 --> 10.1.1.1 80 (0) : LWstate 0x1 LWFlags 0x612003
S5: Session exceeded configured max bytes to queue 1048576 using 1048582
bytes (client queue). 150.70.173.45 34411 --> 10.1.1.1 80 (0) : LWstate 0x1
LWFlags 0x402003
S5: Session exceeded configured max bytes to queue 1048576 using 1048738
bytes (client queue). 162.244.11.7 50218 --> 10.1.1.1 80 (0) : LWstate 0x1
LWFlags 0x402003
S5: Pruned session from cache that was using 1107119 bytes (stale/timeout).
162.244.11.7 50218 --> 10.1.1.1 80 (0) : LWstate 0x1 LWFlags 0x612003
S5: Session exceeded configured max segs to queue 2621 using 2621 segs
(client queue). 10.1.1.1 50520 --> 54.201.8.128 80 (0) : LWstate 0x9
LWFlags 0x406007
S5: Session exceeded configured max segs to queue 2621 using 2621 segs
(client queue). 10.1.1.1 51525 --> 54.201.8.128 80 (0) : LWstate 0x9
LWFlags 0x406007
S5: Session exceeded configured max segs to queue 2621 using 2621 segs
(client queue). 10.1.1.1 51254 --> 54.201.8.128 80 (0) : LWstate 0x9
LWFlags 0x406007
S5: Session exceeded configured max segs to queue 2621 using 2621 segs
(client queue). 10.1.1.1 58949 --> 54.201.8.150 80 (0) : LWstate 0x9
LWFlags 0x406007
S5: Session exceeded configured max segs to queue 2621 using 2621 segs
(client queue). 10.1.1.1 49485 --> 54.201.8.150 80 (0) : LWstate 0x9
LWFlags 0x406007
S5: Session exceeded configured max bytes to queue 1048576 using 1049311
bytes (client queue). 162.112.18.15 43014 --> 10.1.1.1 80 (0) : LWstate 0x1
LWFlags 0x402003
S5: Pruned session from cache that was using 1050091 bytes (stale/timeout).
162.112.18.15 43014 --> 10.1.1.1 80 (0) : LWstate 0x1 LWFlags 0x61a003
S5: Pruned session from cache that was using 1056918 bytes (stale/timeout).
46.118.124.57 65506 --> 10.1.1.1 80 (0) : LWstate 0x1 LWFlags 0x412003
S5: Session exceeded configured max segs to queue 2621 using 2621 segs
(client queue). 10.1.1.1 63019 --> 92.60.105.45 80 (0) : LWstate 0x9
LWFlags 0x44e007
S5: Session exceeded configured max bytes to queue 1048576 using 1049824
bytes (client queue). 198.143.0.248 43551 --> 10.1.1.1 80 (0) : LWstate 0x1
LWFlags 0x402003
S5: Pruned session from cache that was using 1058480 bytes (stale/timeout).
198.143.0.248 43551 --> 10.1.1.1 80 (0) : LWstate 0x1 LWFlags 0x61a003
S5: Session exceeded configured max segs to queue 2621 using 2621 segs
(client queue). 10.1.1.1 53071 --> 54.201.197.65 80 (0) : LWstate 0x9
LWFlags 0x406007



NB: 10.1.1.1 80 represents my web proxy for clients service



....help?





On Wed, Apr 16, 2014 at 8:34 AM, Tom Peters (thopeter)
<thopeter () cisco com>wrote:

>  Hi,
>
>  Just a note to say I am still looking at this.
>
>  Tom
>
>
>
>
>   From: Matheus Condi'ez <conma293 () gmail com>
> Date: Saturday, April 12, 2014 3:15 AM
> To: Thomas Peters <thopeter () cisco com>, Snortusers <
> snort-users () lists sourceforge net>
>
> Subject: Re: [Snort-users] Fwd: Snort 'hangs'
>
>   *Please send your Snort config and your logging output. You don't need
> to wait for a failure to send logs.*
>
>  #--------------------------------------------------
> #   VRT Rule Packages Snort.conf
> #
> #   For more information visit us at:
> #     http://www.snort.org                   Snort Website
> #     http://vrt-blog.snort.org/    Sourcefire VRT Blog
> #
> #     Mailing list Contact:      snort-sigs () lists sourceforge net
> #     False Positive reports:    fp () sourcefire com
> #     Snort bugs:                bugs () snort org
> #
> #     Compatible with Snort Versions:
> #     VERSIONS : 2.9.5.5
> #
> #     Snort build options:
> #     OPTIONS : --enable-gre --enable-mpls --enable-targetbased
> --enable-ppm --enable-perfprofiling --enable-zlib --enable-active-response
> --enable-normalizer --enable-reload --enable-react --enable-flexresp3
> #
> #     Additional information:
> #     This configuration file enables active response, to run snort in
> #     test mode -T you are required to supply an interface -i <interface>
> #     or test mode will fail to fully validate the configuration and
> #     exit with a FATAL error
> #--------------------------------------------------
>
>  ###################################################
> # This file contains a sample snort configuration.
> # You should take the following steps to create your own custom
> configuration:
> #
> #  1) Set the network variables.
> #  2) Configure the decoder
> #  3) Configure the base detection engine
> #  4) Configure dynamic loaded libraries
> #  5) Configure preprocessors
> #  6) Configure output plugins
> #  7) Customize your rule set
> #  8) Customize preprocessor and decoder rule set
> #  9) Customize shared object rule set
> ###################################################
>
>  ###################################################
> # Step #1: Set the network variables.  For more information, see
> README.variables
> ###################################################
>
>  # Setup the network addresses you are protecting
> ipvar HOME_NET any
>
>  # 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 $HOME_NET
>
>  # List of ports you run web servers on
> portvar HTTP_PORTS
> [36,80,81,82,83,84,85,86,87,88,89,90,311,383,555,591,593,631,801,808,818,901,972,1158,1220,1414,1533,1741,1830,2231,2301,2381,2809,3029,3037,3057,3128,3443,3702,4000,4343,4848,5117,5250,6080,6173,6988,7000,7001,7071,7144,7145,7510,7770,7777,7779,8000,8008,8014,8028,8080,8081,8082,8085,8088,8090,8118,8123,8180,8181,8222,8243,8280,8300,8500,8509,8800,8888,8899,9000,9060,9080,9090,9091,9111,9443,9999,10000,11371,12601,15489,29991,33300,34412,34443,34444,41080,44449,50000,50002,51423,53331,55252,55555,56712]
>
>  # List of ports you want to look for SHELLCODE on.
> portvar SHELLCODE_PORTS !80
>
>  # List of ports you might see oracle attacks on
> portvar ORACLE_PORTS 1024:
>
>  # List of ports you want to look for SSH connections on:
> portvar SSH_PORTS 22
>
>  # List of ports you run ftp servers on
> portvar FTP_PORTS [21,2100,3535]
>
>  # List of ports you run SIP servers on
> portvar SIP_PORTS [5060,5061,5600]
>
>  # List of file data ports for file inspection
> portvar FILE_DATA_PORTS [$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
> ]
>
>  # 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 ../rules
> var SO_RULE_PATH ../so_rules
> var PREPROC_RULE_PATH ../preproc_rules
>
>  # If you are using reputation preprocessor set these
> var LIST_PATH ../rules/iplists
> #var BLACK_LIST_PATH ../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 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/snort/lib/snort_dynamicpreprocessor/
>
>  # path to base preprocessor engine
> dynamicengine /usr/local/snort/lib/snort_dynamicengine/libsf_engine.so
>
>  # path to dynamic rules libraries
> dynamicdetection directory /usr/local/snort/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 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 2231 2301 2381 2809 3029 3037 3057 3128 3443 3702 4000 4343
> 4848 5117 5250 6080 6173 6988 7907 7000 7001 7071 7144 7145 7510 7802 7770
> 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 8082 8085 8088
> 8090 8118 8123 8180 8181 8222 8243 8280 8300 8500 8509 8800 8888 8899 9000
> 9060 9080 9090 9091 9111 9443 9999 10000 11371 12601 15489 29991 33300
> 34412 34443 34444 41080 44449 50000 50002 51423 53331 55252 55555 56712
> 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 2231 2301 2381 2809 3029
> 3037 3057 3128 3443 3702 4000 4343 4848 5117 5250 6080 6173 6988 7000 7001
> 7071 7144 7145 7510 7770 7777 7779 8000 8008 8014 8028 8080 8081 8082 8085
> 8088 8090 8118 8123 8180 8181 8222 8243 8280 8300 8500 8509 8800 8888 8899
> 9000 9060 9080 9090 9091 9111 9443 9999 10000 11371 12601 15489 29991 33300
> 34412 34443 34444 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 } 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 both, \
> #   whitelist $LIST_PATH/white_list.rules, \
>     blacklist $LIST_PATH/default.blacklist, \
>     blacklist $LIST_PATH/other.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.u2, limit 128
> output alert_fast
>
>  # 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/snort.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/bad-traffic.rules
> # include $SO_RULE_PATH/chat.rules
> # include $SO_RULE_PATH/dos.rules
> # include $SO_RULE_PATH/exploit.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
>
>
>  …..I have no log output that I am aware of → /var/log/snort only has my
> alert and U2 files for barnyard to deal with
>
>  as you can see im not using the SO Rules and am supressing HTTP Inspect
> and S5 -> would like to learn how to use the SO rules properly in future,
> but for now would like for snort to run without hanging for a week or more
> :-)
>
>  also I am using pulledpork - hence the one snort.rules file in addition
> to local.rules
>
>  *Threshold.conf->*
> ##SUPRESSING HTTP_INSPECT && STREAM5##
> suppress gen_id 119, sig_id 0
> suppress gen_id 120, sig_id 0
> suppress gen_id 129, sig_id 0
>
>  *What is the command line you use to start Snort?*
> sudo /usr/local/snort/bin/snort -c /usr/local/snort/etc/snort.conf -i eth0
> &
>
>  *What configuration parameters did you use to build Snort?*
> sudo tar zxvf snort-2.9.6.0.tar.gz
> cd snort-2.9.6.0
> sudo ./configure --prefix=/usr/local/snort --enable-sourcefire
> --enable-control-socket –enable-shared-rep –enable-build-dynamic-examples
> sudo make
> sudo make install
>
>
>  *Do you use OpenAppID?*
> No – dont know what that is sorry
>
>  *How long have you had this problem? What changed or have you always had
> it?*
> As long as the rules are up and processing – this is a new build, company
> was running an old version and I took over and updated it.
>
>
> On Sat, Apr 12, 2014 at 5:01 PM, conma293 <conma293 () gmail com> wrote:
>
> >  By logging output do you mean unified2 alerting? I don't know how to
> > output error logging??
> >
> >  Will get the rest of the details to you ASAP
> >
> > Sent from my iPhone
> >
> > On 12/04/2014, at 9:22 AM, "Tom Peters (thopeter)" <thopeter () cisco com>
> > wrote:
> >
> >   Matheus,
> >
> >  >> Snort:  s5: session exceeded configured max bytes to queue LWstate
> > 0x1 LWFlags (have updated memcap to half the max @500MB)
> >
> >  This error message (which has segs and bytes versions) means a TCP
> > connection exceeded the configured limit of unacked TCP data. It is common
> > in environments where Snort is only seeing one direction of the connection.
> > It does not mean you have a memory shortage.
> >
> >  It probably also has nothing to do with your problem.
> >
> >  I need more data to make any progress.
> >
> >  Please send your Snort config and your logging output. You don't need
> > to wait for a failure to send logs.
> >
> >  What is the command line you use to start Snort?
> >
> >  What configuration parameters did you use to build Snort?
> >
> >  Do you use OpenAppID?
> >
> >  How long have you had this problem? What changed or have you always had
> > it?
> >
> >  Tom
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