[Snort-users] No Alerts in Windows w/ Snort 2.20 RC1

Michael Steele michaels at ...9077...
Mon Jul 26 19:19:02 EDT 2004


Remove all the extra switches and find out which one is causing the problem;
my guess would be the -A

Kindest regards, 
Michael...

WINSNORT.com Management Team Member
-- 
Pick up your FREE Windows or UNIX Snort installation guides       
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> -----Original Message-----
> From: snort-users-admin at lists.sourceforge.net [mailto:snort-users-
> admin at lists.sourceforge.net] On Behalf Of mike at ...4308...
> Sent: Monday, July 26, 2004 3:36 PM
> To: snort-users at lists.sourceforge.net
> Subject: [Snort-users] No Alerts in Windows w/ Snort 2.20 RC1
> 
> I finally got snort to seem to run fine, however no alerts are being
> generated when it should be. All there is, is the log file with 0 size.
> The
> config file is very similar to the config file I use on my linux boxes and
> they all work perfectly.  I am not sure what could be wrong.  I saw a
> previous set of messages on the list dealing with logging to an sql
> database
> and no alerts, so i am not sure if it is related but that one seemed
> unresolved (at least in the archives).
> 
> The following are the specs:
> Windows Server 2003 Standard
> Dual XEON 3ghz CPUS (w/ hyperthreading)
> 2 Gigs of Ram
> Intel(R) PRO/1000 MT Network Connection
> Snort 2.20 RC1 - http://www.snort.org/dl/binaries/win32/snort-2_2_0RC1.exe
> WinPcap 3.0 - http://winpcap.polito.it/install/bin/WinPcap_3_0.exe
>    (Tried latest however gave a dll entry error, saw thread that said this
> works)
> LibnetNT the included version
>    (Tried 'upgrading' from url of:
> http://www.eeye.com/html/Research/Tools/libnetnt.html, however saw no
> difference minus a runtime error when i killed snort)
> 
> My command line is:
> C:\Snort\bin\snort.exe -c "C:\snort\etc\snort.conf" -l "C:\snort\Log" -A
> full -i 1 -d -e -X
> 
> I also tried:
> bin\snort -c c:\snort\etc\snort.conf -A console -b
> 
> but it doesn't show any alerts to the console or to file.  It is
> definately
> seeing lots of packets, and I can even see it getting the attack packet I
> send:
> 0x0000: 00 C0 9F 3F 13 53 00 03 31 C5 CC 00 08 00 45 00  ...?.S..1.....E.
> 0x0010: 00 A2 A0 F4 40 00 32 06 26 DB 42 4F BC A0 43 13  .... at ...2484...&.BO..C.
> 0x0020: 3E 84 D5 89 00 50 A9 11 B7 52 E9 0F 27 90 80 18  >....P...R..'...
> 0x0030: 16 D0 F3 AC 00 00 01 01 08 0A 0F 42 17 A8 00 00  ...........B....
> 0x0040: 00 00 47 45 54 20 2F 63 6D 64 2E 65 78 65 20 48  ..GET /cmd.exe H
> 0x0050: 54 54 50 2F 31 2E 30 0D 0A 55 73 65 72 2D 41 67  TTP/1.0..User-Ag
> 0x0060: 65 6E 74 3A 20 57 67 65 74 2F 31 2E 38 2E 32 0D  ent: Wget/1.8.2.
> 
> However no alert.  My rule files are in unix file format, however i
> switched
> one to PC and it still didn't pick anything up.
> 
> For when I run snort with the -A console the output is:
> Running in IDS mode
> Log directory = log
> 
> Initializing Network Interface
> \Device\NPF_{66C08459-44B6-49F8-B602-E9E0D2731745}
> 
>         --== Initializing Snort ==--
> Initializing Output Plugins!
> Decoding Ethernet on interface
> \Device\NPF_{66C08459-44B6-49F8-B602-E9E0D2731745}
> Initializing Preprocessors!
> Initializing Plug-ins!
> Parsing Rules file c:\snort\etc\snort.conf
> 
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> Initializing rule chains...
> ,-----------[Flow Config]----------------------
> | Stats Interval:  0
> | Hash Method:     2
> | Memcap:          10485760
> | Rows  :          4099
> | Overhead Bytes:  16400(%0.16)
> `----------------------------------------------
> No arguments to frag2 directive, setting defaults to:
>     Fragment timeout: 60 seconds
>     Fragment memory cap: 4194304 bytes
>     Fragment min_ttl:   0
>     Fragment ttl_limit: 5
>     Fragment Problems: 0
>     Self preservation threshold: 500
>     Self preservation period: 90
>     Suspend threshold: 1000
>     Suspend period: 30
> Stream4 config:
>     Stateful inspection: ACTIVE
>     Session statistics: INACTIVE
>     Session timeout: 30 seconds
>     Session memory cap: 8388608 bytes
>     State alerts: INACTIVE
>     Evasion alerts: INACTIVE
>     Scan alerts: INACTIVE
>     Log Flushed Streams: INACTIVE
>     MinTTL: 1
>     TTL Limit: 5
>     Async Link: 0
>     State Protection: 0
>     Self preservation threshold: 50
>     Self preservation period: 90
>     Suspend threshold: 200
>     Suspend period: 30
> Stream4_reassemble config:
>     Server reassembly: INACTIVE
>     Client reassembly: ACTIVE
>     Reassembler alerts: ACTIVE
>     Zero out flushed packets: INACTIVE
>     flush_data_diff_size: 500
>     Ports: 21 23 25 53 80 110 111 143 513 1433
>     Emergency Ports: 21 23 25 53 80 110 111 143 513 1433
> HttpInspect Config:
>     GLOBAL CONFIG
>       Max Pipeline Requests:    0
>       Inspection Type:          STATELESS
>       Detect Proxy Usage:       NO
>       IIS Unicode Map Filename: c:\snort\etc\unicode.map
>       IIS Unicode Map Codepage: 1252
>     DEFAULT SERVER CONFIG:
>       Ports: 80 8080 8180
>       Flow Depth: 300
>       Max Chunk Length: 500000
>       Inspect Pipeline Requests: YES
>       URI Discovery Strict Mode: NO
>       Allow Proxy Usage: NO
>       Disable Alerting: NO
>       Oversize Dir Length: 500
>       Only inspect URI: NO
>       Ascii: YES alert: NO
>       Double Decoding: YES alert: YES
>       %U Encoding: YES alert: YES
>       Bare Byte: YES alert: YES
>       Base36: OFF
>       UTF 8: OFF
>       IIS Unicode: YES alert: YES
>       Multiple Slash: YES alert: NO
>       IIS Backslash: YES alert: NO
>       Directory Traversal: YES alert: NO
>       Web Root Traversal: YES alert: YES
>       Apache WhiteSpace: YES alert: YES
>       IIS Delimiter: YES alert: YES
>       IIS Unicode Map: GLOBAL IIS UNICODE MAP CONFIG
>       Non-RFC Compliant Characters: NONE
> rpc_decode arguments:
>     Ports to decode RPC on: 111 32771
>     alert_fragments: INACTIVE
>     alert_large_fragments: ACTIVE
>     alert_incomplete: ACTIVE
>     alert_multiple_requests: ACTIVE
> telnet_decode arguments:
>     Ports to decode telnet on: 21 23 25 119
> 1768 Snort rules read...
> 1768 Option Chains linked into 241 Chain Headers
> 0 Dynamic rules
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> 
> 
> +-----------------------[thresholding-config]-----------------------------
> --
> ---
> | memory-cap : 1048576 bytes
> +-----------------------[thresholding-global]-----------------------------
> --
> ---
> | none
> +-----------------------[thresholding-local]------------------------------
> --
> ---
> | gen-id=1      sig-id=2495      type=Both       tracking=dst count=20
> seconds=60
> | gen-id=1      sig-id=2494      type=Both       tracking=dst count=20
> seconds=60
> | gen-id=1      sig-id=2496      type=Both       tracking=dst count=20
> seconds=60
> | gen-id=1      sig-id=2275       type=Threshold tracking=dst count=5
> seconds=60
> | gen-id=1      sig-id=2523      type=Both       tracking=dst count=10
> seconds=10
> +-----------------------[suppression]-------------------------------------
> --
> ---
> --------------------------------------------------------------------------
> --
> ---
> Rule application order: ->activation->dynamic->alert->pass->log
> 
>         --== Initialization Complete ==--
> 
> -*> Snort! <*-
> Version 2.2.0RC1-ODBC-MySQL-FlexRESP-WIN32 (Build 28)
> By Martin Roesch (roesch at ...1935..., www.snort.org)
> 1.7-WIN32 Port By Michael Davis (mike at ...92...,
> www.datanerds.net/~mike)
> 1.8 - 2.x WIN32 Port By Chris Reid (chris.reid at ...3029...)
> Snort received 36 packets
>     Analyzed: 36(100.000%)
>     Dropped: 0(0.000%)
> ==========================================================================
> ==
> ===
> Breakdown by protocol:
>     TCP: 21         (58.333%)
>     UDP: 4          (11.111%)
>    ICMP: 2          (5.556%)
>     ARP: 0          (0.000%)
>   EAPOL: 0          (0.000%)
>    IPv6: 0          (0.000%)
>     IPX: 0          (0.000%)
>   OTHER: 4          (11.111%)
> DISCARD: 0          (0.000%)
> ==========================================================================
> ==
> ===
> Action Stats:
> ALERTS: 0
> LOGGED: 0
> PASSED: 0
> ==========================================================================
> ==
> ===
> TCP Stream Reassembly Stats:
>     TCP Packets Used: 12         (33.333%)
>     Stream Trackers: 1
>     Stream flushes: 0
>     Segments used: 0
>     Stream4 Memory Faults: 0
> ==========================================================================
> ==
> ===
> Final Flow Statistics
> pcap_loop: read error: PacketReceivePacket failed
> ,----[ FLOWCACHE STATS ]----------
> Memcap: 10485760 Overhead Bytes 16400 used(%0.161858)/blocks (16972/5)
> Overhead blocks: 1 Could Hold: (73326)
> IPV4 count: 4 frees: 0 low_time: 1090880204, high_time: 1090880208, diff:
> 0h:00:04s
>     finds: 17 reversed: 0(%0.000000)
>     find_sucess: 0 find_fail: 0 percent_success: (%0.000000) new_flows: 4
>  Protocol: 1 (%5.882353) finds: 1  reversed: 0(%0.000000)
>   find_sucess: 0 find_fail: 0 percent_success: (%0.000000) new_flows: 1
>  Protocol: 6 (%70.000000) finds: 14  reversed: 0(%0.000000)
>   find_sucess: 0 find_fail: 0 percent_success: (%0.000000) new_flows: 1
>  Protocol: 17 (%25.000000) finds: 5  reversed: 0(%0.000000)
>   find_sucess: 0 find_fail: 0 percent_success: (%0.000000) new_flows: 2
> 
> 
> 
> 
> 
> The snort.conf file
> 
> #--------------------------------------------------
> #   http://www.snort.org     Snort 2.1.0 Ruleset
> #     Contact: snort-sigs at lists.sourceforge.net
> #--------------------------------------------------
> # $Id: snort.conf,v 1.142 2004/03/20 21:58:42 cazz Exp $
> #
> ###################################################
> # This file contains a sample snort configuration.
> # You can take the following steps to create your own custom
> configuration:
> #
> #  1) Set the network variables for your network
> #  2) Configure preprocessors
> #  3) Configure output plugins
> #  4) Customize your rule set
> #
> ###################################################
> # Step #1: Set the network variables:
> #
> # You must change the following variables to reflect your local network.
> The
> # variable is currently setup for an RFC 1918 address space.
> #
> # You can specify it explicitly as:
> #
> # var HOME_NET 10.1.1.0/24
> #
> # or use global variable $<interfacename>_ADDRESS which will be always
> # initialized to IP address and netmask of the network interface which you
> run
> # snort at.  Under Windows, this must be specified as
> # $(<interfacename>_ADDRESS), such as:
> # $(\Device\Packet_{12345678-90AB-CDEF-1234567890AB}_ADDRESS)
> #
> # var HOME_NET $eth0_ADDRESS
> #
> # You can specify lists of IP addresses for HOME_NET
> # by separating the IPs with commas like this:
> #
> # var HOME_NET [10.1.1.0/24,192.168.1.0/24]
> #
> # MAKE SURE YOU DON'T PLACE ANY SPACES IN YOUR LIST!
> #
> # or you can specify the variable to be any IP address
> # like this:
> 
> var HOME_NET any
> 
> # Set up the external network addresses as well.  A good start may be
> "any"
> var EXTERNAL_NET any
> 
> # Configure your server lists.  This allows snort to only look for attacks
> to
> # systems that have a service up.  Why look for HTTP attacks if you are
> not
> # running a web server?  This allows quick filtering based on IP addresses
> # These configurations MUST follow the same configuration scheme as
> defined
> # above for $HOME_NET.
> 
> # List of DNS servers on your network
> var DNS_SERVERS $HOME_NET
> 
> # List of SMTP servers on your network
> var SMTP_SERVERS $HOME_NET
> 
> # List of web servers on your network
> var HTTP_SERVERS $HOME_NET
> 
> # List of sql servers on your network
> var SQL_SERVERS $HOME_NET
> 
> # List of telnet servers on your network
> var TELNET_SERVERS $HOME_NET
> 
> # List of snmp servers on your network
> var SNMP_SERVERS $HOME_NET
> 
> # Configure your service ports.  This allows snort to look for attacks
> destined
> # to a specific application only on the ports that application runs on.
> For
> # example, if you run a web server on port 8081, set your HTTP_PORTS
> variable
> # like this:
> #
> # var HTTP_PORTS 8081
> #
> # Port lists must either be continuous [eg 80:8080], or a single port [eg
> 80].
> # We will adding support for a real list of ports in the future.
> 
> # Ports you run web servers on
> #
> # Please note:  [80,8080] does not work.
> # If you wish to define multiple HTTP ports,
> #
> ## var HTTP_PORTS 80
> ## include somefile.rules
> ## var HTTP_PORTS 8080
> ## include somefile.rules
> var HTTP_PORTS 80
> 
> # Ports you want to look for SHELLCODE on.
> var SHELLCODE_PORTS !80
> 
> # Ports you do oracle attacks on
> var ORACLE_PORTS 1521
> 
> # other variables
> #
> # AIM servers.  AOL has a habit of adding new AIM servers, so instead of
> # modifying the signatures when they do, we add them to this list of
> servers.
> var AIM_SERVERS
> [64.12.24.0/24,64.12.25.0/24,64.12.26.14/24,64.12.28.0/24,64.12.29.0/24,64
> .1
> 2.161.0/24,64.12.163.0/24,205.188.5.0/24,205.188.9.0/24]
> 
> # Path to your rules files (this can be a relative path)
> var RULE_PATH c:\snort\rules
> 
> # Configure the snort decoder
> # ============================
> #
> # Snort's decoder will alert on lots of things such as header
> # truncation or options of unusual length or infrequently used tcp options
> #
> #
> # 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
> #
> # In snort 2.0.1 and above, this only alerts when a TCP option is detected
> # that shows T/TCP being actively used on the network.  If this is normal
> # behavior for your network, disable the next option.
> #
> # 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
> 
> # Configure the detection engine
> # ===============================
> #
> # Use a different pattern matcher in case you have a machine with very
> limited
> # resources:
> #
> # config detection: search-method lowmem
> 
> ###################################################
> # Step #2: Configure preprocessors
> #
> # General configuration for preprocessors is of
> # the form
> # preprocessor <name_of_processor>: <configuration_options>
> 
> # Configure Flow tracking module
> # -------------------------------
> #
> # The Flow tracking module is meant to start unifying the state keeping
> # mechanisms of snort into a single place. Right now, only a portscan
> detector
> # is implemented but in the long term,  many of the stateful subsystems of
> # snort will be migrated over to becoming flow plugins. This must be
> enabled
> # for flow-portscan to work correctly.
> #
> # See README.flow for additional information
> #
> preprocessor flow: stats_interval 0 hash 2
> 
> # frag2: IP defragmentation support
> # -------------------------------
> # This preprocessor performs IP defragmentation.  This plugin will also
> detect
> # people launching fragmentation attacks (usually DoS) against hosts.  No
> # arguments loads the default configuration of the preprocessor, which is
> a
> 60
> # second timeout and a 4MB fragment buffer.
> 
> # The following (comma delimited) options are available for frag2
> #    timeout [seconds] - sets the number of [seconds] that an unfinished
> #                        fragment will be kept around waiting for
> completion,
> #                        if this time expires the fragment will be flushed
> #    memcap [bytes] - limit frag2 memory usage to [number] bytes
> #                      (default:  4194304)
> #
> #    min_ttl [number] - minimum ttl to accept
> #
> #    ttl_limit [number] - difference of ttl to accept without alerting
> #                         will cause false positves with router flap
> #
> # Frag2 uses Generator ID 113 and uses the following SIDS
> # for that GID:
> #  SID     Event description
> # -----   -------------------
> #   1       Oversized fragment (reassembled frag > 64k bytes)
> #   2       Teardrop-type attack
> 
> preprocessor frag2
> 
> # stream4: stateful inspection/stream reassembly for Snort
> #----------------------------------------------------------------------
> # Use in concert with the -z [all|est] command line switch to defeat
> stick/snot
> # against TCP rules.  Also performs full TCP stream reassembly, stateful
> # inspection of TCP streams, etc.  Can statefully detect various portscan
> # types, fingerprinting, ECN, etc.
> 
> # stateful inspection directive
> # no arguments loads the defaults (timeout 30, memcap 8388608)
> # options (options are comma delimited):
> #   detect_scans - stream4 will detect stealth portscans and generate
> alerts
> #                  when it sees them when this option is set
> #   detect_state_problems - detect TCP state problems, this tends to be
> very
> #                           noisy because there are a lot of crappy ip
> stack
> #                           implementations out there
> #
> #   disable_evasion_alerts - turn off the possibly noisy mitigation of
> #                            overlapping sequences.
> #
> #
> #   min_ttl [number]       - set a minium ttl that snort will accept to
> #                            stream reassembly
> #
> #   ttl_limit [number]     - differential of the initial ttl on a session
> versus
> #                             the normal that someone may be playing
> games.
> #                             Routing flap may cause lots of false
> positives.
> #
> #   keepstats [machine|binary] - keep session statistics, add "machine" to
> #                         get them in a flat format for machine reading,
> add
> #                         "binary" to get them in a unified binary output
> #                         format
> #   noinspect - turn off stateful inspection only
> #   timeout [number] - set the session timeout counter to [number]
> seconds,
> #                      default is 30 seconds
> #   memcap [number] - limit stream4 memory usage to [number] bytes
> #   log_flushed_streams - if an event is detected on a stream this option
> will
> #                         cause all packets that are stored in the stream4
> #                         packet buffers to be flushed to disk.  This only
> #                         works when logging in pcap mode!
> #
> # Stream4 uses Generator ID 111 and uses the following SIDS
> # for that GID:
> #  SID     Event description
> # -----   -------------------
> #   1       Stealth activity
> #   2       Evasive RST packet
> #   3       Evasive TCP packet retransmission
> #   4       TCP Window violation
> #   5       Data on SYN packet
> #   6       Stealth scan: full XMAS
> #   7       Stealth scan: SYN-ACK-PSH-URG
> #   8       Stealth scan: FIN scan
> #   9       Stealth scan: NULL scan
> #   10      Stealth scan: NMAP XMAS scan
> #   11      Stealth scan: Vecna scan
> #   12      Stealth scan: NMAP fingerprint scan stateful detect
> #   13      Stealth scan: SYN-FIN scan
> #   14      TCP forward overlap
> 
> preprocessor stream4: disable_evasion_alerts detect_scans  ttl_limit 6
> 
> # tcp stream reassembly directive
> # no arguments loads the default configuration
> #   Only reassemble the client,
> #   Only reassemble the default list of ports (See below),
> #   Give alerts for "bad" streams
> #
> # Available options (comma delimited):
> #   clientonly - reassemble traffic for the client side of a connection
> only
> #   serveronly - reassemble traffic for the server side of a connection
> only
> #   both - reassemble both sides of a session
> #   noalerts - turn off alerts from the stream reassembly stage of stream4
> #   ports [list] - use the space separated list of ports in [list], "all"
> #                  will turn on reassembly for all ports, "default" will
> turn
> #                  on reassembly for ports 21, 23, 25, 53, 80, 143, 110,
> 111
> #                  and 513
> 
> preprocessor stream4_reassemble
> 
> # http_inspect: normalize and detect HTTP traffic and protocol anomalies
> #
> # lots of options available here. See doc/README.http_inspect.
> # unicode.map should be wherever your snort.conf lives, or given
> # a full path to where snort can find it.
> preprocessor http_inspect: global \
>     iis_unicode_map unicode.map 1252
> 
> preprocessor http_inspect_server: server default \
>     profile all ports { 80 8080 8180 } oversize_dir_length 500
> 
> #
> #  Example unqiue server configuration
> #
> #preprocessor http_inspect_server: server 1.1.1.1 \
> #    ports { 80 3128 8080 } \
> #    flow_depth 0 \
> #    ascii no \
> #    double_decode yes \
> #    non_rfc_char { 0x00 } \
> #    chunk_length 500000 \
> #    non_strict \
> #    oversize_dir_length 300 \
> #    no_alerts
> 
> 
> # rpc_decode: normalize RPC traffic
> # ---------------------------------
> # RPC may be sent in alternate encodings besides the usual 4-byte encoding
> # that is used by default. This plugin takes the port numbers that RPC
> # services are running on as arguments - it is assumed that the given
> ports
> # are actually running this type of service. If not, change the ports or
> turn
> # it off.
> # The RPC decode preprocessor uses generator ID 106
> #
> # arguments: space separated list
> # alert_fragments - alert on any rpc fragmented TCP data
> # no_alert_multiple_requests - don't alert when >1 rpc query is in a
> packet
> # no_alert_large_fragments - don't alert when the fragmented
> #                            sizes exceed the current packet size
> # no_alert_incomplete - don't alert when a single segment
> #                       exceeds the current packet size
> 
> preprocessor rpc_decode: 111 32771
> 
> # bo: Back Orifice detector
> # -------------------------
> # Detects Back Orifice traffic on the network.  Takes no arguments in 2.0.
> #
> # The Back Orifice detector uses Generator ID 105 and uses the
> # following SIDS for that GID:
> #  SID     Event description
> # -----   -------------------
> #   1       Back Orifice traffic detected
> 
> preprocessor bo
> 
> # telnet_decode: Telnet negotiation string normalizer
> # ---------------------------------------------------
> # This preprocessor "normalizes" telnet negotiation strings from telnet
> and
> ftp
> # traffic.  It works in much the same way as the http_decode preprocessor,
> # searching for traffic that breaks up the normal data stream of a
> protocol
> and
> # replacing it with a normalized representation of that traffic so that
> the
> # "content" pattern matching keyword can work without requiring
> modifications.
> # This preprocessor requires no arguments.
> # Portscan uses Generator ID 109 and does not generate any SID currently.
> 
> preprocessor telnet_decode
> 
> # Flow-Portscan: detect a variety of portscans
> # ---------------------------------------
> # Note:  The Flow preprocessor (above) must first be enabled for
> Flow-Portscan to
> # work.
> #
> # This module detects portscans based off of flow creation in the flow
> # preprocessors.  The goal is to catch catch one->many hosts and one->many
> # ports scans.
> #
> # Flow-Portscan has numerous options available, please read
> # README.flow-portscan for help configuring this option.
> 
> # Flow-Portscan uses Generator ID 121 and uses the following SIDS for that
> GID:
> #  SID     Event description
> # -----   -------------------
> #   1       flow-portscan: Fixed Scale Scanner Limit Exceeded
> #   2       flow-portscan: Sliding Scale Scanner Limit Exceeded
> #   3       flow-portscan: Fixed Scale Talker Limit Exceeded
> #   4	    flow-portscan: Sliding Scale Talker Limit Exceeded
> 
> # preprocessor flow-portscan: \
> #	talker-sliding-scale-factor 0.50 \
> #	talker-fixed-threshold 30 \
> #	talker-sliding-threshold 30 \
> #	talker-sliding-window 20 \
> #	talker-fixed-window 30 \
> #	scoreboard-rows-talker 30000 \
> #	server-watchnet [10.2.0.0/30] \
> #	server-ignore-limit 200 \
> #	server-rows 65535 \
> #	server-learning-time 14400 \
> #	server-scanner-limit 4 \
> #	scanner-sliding-window 20 \
> #	scanner-sliding-scale-factor 0.50 \
> #	scanner-fixed-threshold 15 \
> #	scanner-sliding-threshold 40 \
> #	scanner-fixed-window 15 \
> #	scoreboard-rows-scanner 30000 \
> #	src-ignore-net [192.168.1.1/32,192.168.0.0/24] \
> #	dst-ignore-net [10.0.0.0/30] \
> #	alert-mode once \
> #	output-mode msg \
> #	tcp-penalties on
> 
> # arpspoof
> #----------------------------------------
> # Experimental ARP detection code from Jeff Nathan, detects ARP attacks,
> # unicast ARP requests, and specific ARP mapping monitoring.  To make use
> of
> # this preprocessor you must specify the IP and hardware address of hosts
> on
> # the same layer 2 segment as you.  Specify one host IP MAC combo per
> line.
> # Also takes a "-unicast" option to turn on unicast ARP request detection.
> # Arpspoof uses Generator ID 112 and uses the following SIDS for that GID:
> 
> #  SID     Event description
> # -----   -------------------
> #   1       Unicast ARP request
> #   2       Etherframe ARP mismatch (src)
> #   3       Etherframe ARP mismatch (dst)
> #   4       ARP cache overwrite attack
> 
> #preprocessor arpspoof
> #preprocessor arpspoof_detect_host: 192.168.40.1 f0:0f:00:f0:0f:00
> 
> 
> # Performance Statistics
> # ----------------------
> # Documentation for this is provided in the Snort Manual.  You should read
> it.
> # It is included in the release distribution as doc/snort_manual.pdf
> #
> # preprocessor perfmonitor: time 300 file /var/snort/snort.stats pktcnt
> 10000
> 
> ####################################################################
> # Step #3: Configure output plugins
> #
> # Uncomment and configure the output plugins you decide to use.  General
> # configuration for output plugins is of the form:
> #
> # output <name_of_plugin>: <configuration_options>
> #
> # alert_syslog: log alerts to syslog
> # ----------------------------------
> # Use one or more syslog facilities as arguments.  Win32 can also
> optionally
> # specify a particular hostname/port.  Under Win32, the default hostname
> is
> # '127.0.0.1', and the default port is 514.
> #
> # [Unix flavours should use this format...]
> # output alert_syslog: LOG_AUTH LOG_ALERT
> #
> # [Win32 can use any of these formats...]
> # output alert_syslog: LOG_AUTH LOG_ALERT
> # output alert_syslog: host=hostname, LOG_AUTH LOG_ALERT
> # output alert_syslog: host=hostname:port, LOG_AUTH LOG_ALERT
> 
> # log_tcpdump: log packets in binary tcpdump format
> # -------------------------------------------------
> # The only argument is the output file name.
> #
> # output log_tcpdump: tcpdump.log
> 
> # database: log to a variety of databases
> # ---------------------------------------
> # See the README.database file for more information about configuring
> # and using this plugin.
> #
> # output database: log, mysql, user=root password=test dbname=db
> host=localhost
> # output database: alert, postgresql, user=snort dbname=snort
> # output database: log, odbc, user=snort dbname=snort
> # output database: log, mssql, dbname=snort user=snort password=test
> # output database: log, oracle, dbname=snort user=snort password=test
> # unified: Snort unified binary format alerting and logging
> # -------------------------------------------------------------
> # The unified output plugin provides two new formats for logging and
> generating
> # alerts from Snort, the "unified" format.  The unified format is a
> straight
> # binary format for logging data out of Snort that is designed to be fast
> and
> # efficient.  Used with barnyard (the new alert/log processor), most of
> the
> # overhead for logging and alerting to various slow storage mechanisms
> such
> as
> # databases or the network can now be avoided.
> #
> # Check out the spo_unified.h file for the data formats.
> #
> # Two arguments are supported.
> #    filename - base filename to write to (current time_t is appended)
> #    limit    - maximum size of spool file in MB (default: 128)
> #
> # output alert_unified: filename snort.alert, limit 128
> # output log_unified: filename snort.log, limit 128
> 
> # You can optionally define new rule types and associate one or more
> output
> # plugins specifically to that type.
> #
> # This example will create a type that will log to just tcpdump.
> # ruletype suspicious
> # {
> #   type log
> #   output log_tcpdump: suspicious.log
> # }
> #
> # EXAMPLE RULE FOR SUSPICIOUS RULETYPE:
> # suspicious tcp $HOME_NET any -> $HOME_NET 6667 (msg:"Internal IRC
> Server";)
> #
> # This example will create a rule type that will log to syslog and a mysql
> # database:
> # ruletype redalert
> # {
> #   type alert
> #   output alert_syslog: LOG_AUTH LOG_ALERT
> #   output database: log, mysql, user=snort dbname=snort host=localhost
> # }
> #
> # EXAMPLE RULE FOR REDALERT RULETYPE:
> # redalert tcp $HOME_NET any -> $EXTERNAL_NET 31337 \
> #   (msg:"Someone is being LEET"; flags:A+;)
> 
> #
> # Include classification & priority settings
> #
> 
> include classification.config
> 
> #
> # Include reference systems
> #
> 
> include reference.config
> 
> ####################################################################
> # Step #4: Customize your rule set
> #
> # Up to date snort rules are available at http://www.snort.org
> #
> # The snort web site has documentation about how to write your own custom
> snort
> # rules.
> #
> # The rules included with this distribution generate alerts based on on
> # suspicious activity. Depending on your network environment, your
> security
> # policies, and what you consider to be suspicious, some of these rules
> may
> # either generate false positives ore may be detecting activity you
> consider
> to
> # be acceptable; therefore, you are encouraged to comment out rules that
> are
> # not applicable in your environment.
> #
> # The following individuals contributed many of rules in this
> distribution.
> #
> # Credits:
> #   Ron Gula <rgula at ...922...> of Network Security Wizards
> #   Max Vision <vision at ...4...>
> #   Martin Markgraf <martin at ...923...>
> #   Fyodor Yarochkin <fygrave at ...121...>
> #   Nick Rogness <nick at ...176...>
> #   Jim Forster <jforster at ...176...>
> #   Scott McIntyre <scott at ...315...>
> #   Tom Vandepoel <Tom.Vandepoel at ...271...>
> #   Brian Caswell <bmc at ...950...>
> #   Zeno <admin at ...4494...>
> #   Ryan Russell <ryan at ...35...>
> 
> 
> 
> #=========================================
> # Include all relevant rulesets here
> #
> # The following rulesets are disabled by default:
> #
> #   web-attacks, backdoor, shellcode, policy, porn, info, icmp-info,
> virus,
> #   chat, multimedia, and p2p
> #
> # These rules are either site policy specific or require tuning in order
> to
> not
> # generate false positive alerts in most enviornments.
> #
> # Please read the specific include file for more information and
> # README.alert_order for how rule ordering affects how alerts are
> triggered.
> #=========================================
> 
> include $RULE_PATH/local.rules
> include $RULE_PATH/bad-traffic.rules
> include $RULE_PATH/exploit.rules
> include $RULE_PATH/scan.rules
> include $RULE_PATH/finger.rules
> include $RULE_PATH/ftp.rules
> include $RULE_PATH/telnet.rules
> include $RULE_PATH/rpc.rules
> include $RULE_PATH/rservices.rules
> include $RULE_PATH/dos.rules
> include $RULE_PATH/ddos.rules
> include $RULE_PATH/dns.rules
> include $RULE_PATH/tftp.rules
> 
> include $RULE_PATH/web-cgi.rules
> include $RULE_PATH/web-coldfusion.rules
> include $RULE_PATH/web-iis.rules
> include $RULE_PATH/web-frontpage.rules
> include $RULE_PATH/web-misc.rules
> include $RULE_PATH/web-client.rules
> include $RULE_PATH/web-php.rules
> 
> include $RULE_PATH/sql.rules
> include $RULE_PATH/x11.rules
> include $RULE_PATH/icmp.rules
> include $RULE_PATH/netbios.rules
> include $RULE_PATH/misc.rules
> include $RULE_PATH/attack-responses.rules
> include $RULE_PATH/oracle.rules
> include $RULE_PATH/mysql.rules
> include $RULE_PATH/snmp.rules
> 
> include $RULE_PATH/smtp.rules
> include $RULE_PATH/imap.rules
> include $RULE_PATH/pop2.rules
> include $RULE_PATH/pop3.rules
> 
> include $RULE_PATH/nntp.rules
> include $RULE_PATH/other-ids.rules
> include $RULE_PATH/web-attacks.rules
> include $RULE_PATH/backdoor.rules
> include $RULE_PATH/shellcode.rules
> include $RULE_PATH/policy.rules
> include $RULE_PATH/porn.rules
> include $RULE_PATH/info.rules
> include $RULE_PATH/icmp-info.rules
> include $RULE_PATH/virus.rules
> include $RULE_PATH/chat.rules
> include $RULE_PATH/multimedia.rules
> include $RULE_PATH/p2p.rules
> include $RULE_PATH/experimental.rules
> 
> # Include any thresholding or suppression commands. See threshold.conf in
> the
> # <snort src>/etc directory for details. Commands don't necessarily need
> to
> be
> # contained in this conf, but a separate conf makes it easier to maintain
> them.
> # Uncomment if needed.
> # include threshold.conf
> config event_queue: log 2
> 
> 
> 
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