Trying to run snort 3.0 on ubuntu 18.04 , I get the following error The Next CEO of Stack OverflowIssue on Snort rules to track IRC servers activitiesSnort http_inspect preprocessor will not alert to traffichow to know if snort detects syn flood attacks since snort alert is not logging any thingsnort 2.9.7.0 unable to load rule from local.conf while in test modeSnort doesn't detect rules except pingSnort only alerting about IP its running onHow do I use a snort instance to protect a web serverSnort pcap analysis with ET rulesSnort Errors: ERROR: /etc/snort/snort.conf(0) Unable to open rules file “/etc/snort/snort.conf”: No such file or directoryWindows Snort Error--ERROR: C:Snortetcsnort.conf(0) Failed to parse the IP address: 32.0.0.0/35.0.0.0

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Trying to run snort 3.0 on ubuntu 18.04 , I get the following error



The Next CEO of Stack OverflowIssue on Snort rules to track IRC servers activitiesSnort http_inspect preprocessor will not alert to traffichow to know if snort detects syn flood attacks since snort alert is not logging any thingsnort 2.9.7.0 unable to load rule from local.conf while in test modeSnort doesn't detect rules except pingSnort only alerting about IP its running onHow do I use a snort instance to protect a web serverSnort pcap analysis with ET rulesSnort Errors: ERROR: /etc/snort/snort.conf(0) Unable to open rules file “/etc/snort/snort.conf”: No such file or directoryWindows Snort Error--ERROR: C:Snortetcsnort.conf(0) Failed to parse the IP address: 32.0.0.0/35.0.0.0










0















 victim@victim:~$ sudo snort -c /etc/snort/snort.conf



--------------------------------------------------

o")~ Snort++ 3.0.0-250

--------------------------------------------------

Loading /etc/snort/snort.conf:

FATAL: can't load /etc/snort/snort.conf: /etc/snort/snort.conf:2: unexpected symbol near '#'

Fatal Error, Quitting..




I have tried previous post but nothing works.



#--------------------------------------------------
# VRT Rule Packages Snort.conf
#
# For more information visit us at:
# http://www.snort.org Snort Website
# http://vrt-sourcefire.blogspot.com/ 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 : 2.9.0.0
#
# Snort build options:
# OPTIONS : --enable-ipv6 --enable-gre --enable-mpls --enable-targetbased --enable-decoder-preprocessor-rules --enable-ppm --enable-perfprofiling --enable-zlib --enable-active-response --enable-normalizer --enable-reload --enable-react --enable-flexresp3
#--------------------------------------------------

###################################################
# 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 ports you run web servers on
portvar HTTP_PORTS [80,311,591,593,901,1220,1414,2301,2381,2809,3128,3702,5250,7777,7779,8000,8008,8028,8080,8088,8118,8123,8180,8243,8280,8888,9090,9091,9443,9999,11371]

# 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

# 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:snortrules
var RULE_PATH /etc/snort/rules
var SO_RULE_PATH /etc/snort/so_rules
var PREPROC_RULE_PATH /etc/snort/preproc_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


###################################################
# 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

###################################################
# 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

###################################################
# 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
###################################################

# 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: max_tcp 8192, track_tcp yes, track_udp yes, track_icmp no 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 6665 6666 6667 6668 6669
7000 32770 32771 32772 32773 32774 32775 32776 32777 32778 32779,
ports both 80 311 443 465 563 591 593 636 901 989 992 993 994 995 1220 1414 2301 2381 2809 3128 3702 5250 6907 7702 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 8028 8080 8088 8118 8123 8180 8243 8280 8888 9090 9091 9443 9999 11371
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 20480 decompress_depth 20480
preprocessor http_inspect_server: server default
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
ports 80 311 591 593 901 1220 1414 2301 2381 2809 3128 3702 5250 7777 7779 8000 8008 8028 8080 8088 8118 8123 8180 8243 8280 8888 9090 9091 9443 9999 11371
non_rfc_char 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07
enable_cookie
extended_response_inspection
inspect_gzip
normalize_utf
unlimited_decompress
apache_whitespace no
ascii no
bare_byte no
base36 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
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 >
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 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
enable_mime_decoding
max_mime_depth 20480
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

# 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 7702 7900 7901 7902 7903 7904 7905 7906 6907 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

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

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

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

# syslog
# output alert_syslog: LOG_AUTH LOG_ALERT

# pcap
# output log_tcpdump: tcpdump.log

# 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/attack-responses.rules
include $RULE_PATH/backdoor.rules
include $RULE_PATH/bad-traffic.rules
include $RULE_PATH/blacklist.rules
include $RULE_PATH/botnet-cnc.rules
include $RULE_PATH/chat.rules
include $RULE_PATH/content-replace.rules
include $RULE_PATH/ddos.rules
include $RULE_PATH/dns.rules
include $RULE_PATH/dos.rules
include $RULE_PATH/exploit.rules
include $RULE_PATH/finger.rules
include $RULE_PATH/ftp.rules
include $RULE_PATH/icmp.rules
include $RULE_PATH/icmp-info.rules
include $RULE_PATH/imap.rules
include $RULE_PATH/info.rules
include $RULE_PATH/misc.rules
include $RULE_PATH/multimedia.rules
include $RULE_PATH/mysql.rules
include $RULE_PATH/netbios.rules
include $RULE_PATH/nntp.rules
include $RULE_PATH/oracle.rules
include $RULE_PATH/other-ids.rules
include $RULE_PATH/p2p.rules
include $RULE_PATH/phishing-spam.rules
include $RULE_PATH/policy.rules
include $RULE_PATH/pop2.rules
include $RULE_PATH/pop3.rules
include $RULE_PATH/rpc.rules
include $RULE_PATH/rservices.rules
include $RULE_PATH/scada.rules
include $RULE_PATH/scan.rules
include $RULE_PATH/shellcode.rules
include $RULE_PATH/smtp.rules
include $RULE_PATH/snmp.rules
include $RULE_PATH/specific-threats.rules
include $RULE_PATH/spyware-put.rules
include $RULE_PATH/sql.rules
include $RULE_PATH/telnet.rules
include $RULE_PATH/tftp.rules
include $RULE_PATH/virus.rules
include $RULE_PATH/voip.rules
include $RULE_PATH/web-activex.rules
include $RULE_PATH/web-attacks.rules
include $RULE_PATH/web-cgi.rules
include $RULE_PATH/web-client.rules
include $RULE_PATH/web-coldfusion.rules
include $RULE_PATH/web-frontpage.rules
include $RULE_PATH/web-iis.rules
include $RULE_PATH/web-misc.rules
include $RULE_PATH/web-php.rules
include $RULE_PATH/x11.rules

###################################################
# 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/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/sql.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









share|improve this question




























    0















     victim@victim:~$ sudo snort -c /etc/snort/snort.conf



    --------------------------------------------------

    o")~ Snort++ 3.0.0-250

    --------------------------------------------------

    Loading /etc/snort/snort.conf:

    FATAL: can't load /etc/snort/snort.conf: /etc/snort/snort.conf:2: unexpected symbol near '#'

    Fatal Error, Quitting..




    I have tried previous post but nothing works.



    #--------------------------------------------------
    # VRT Rule Packages Snort.conf
    #
    # For more information visit us at:
    # http://www.snort.org Snort Website
    # http://vrt-sourcefire.blogspot.com/ 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 : 2.9.0.0
    #
    # Snort build options:
    # OPTIONS : --enable-ipv6 --enable-gre --enable-mpls --enable-targetbased --enable-decoder-preprocessor-rules --enable-ppm --enable-perfprofiling --enable-zlib --enable-active-response --enable-normalizer --enable-reload --enable-react --enable-flexresp3
    #--------------------------------------------------

    ###################################################
    # 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 ports you run web servers on
    portvar HTTP_PORTS [80,311,591,593,901,1220,1414,2301,2381,2809,3128,3702,5250,7777,7779,8000,8008,8028,8080,8088,8118,8123,8180,8243,8280,8888,9090,9091,9443,9999,11371]

    # 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

    # 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:snortrules
    var RULE_PATH /etc/snort/rules
    var SO_RULE_PATH /etc/snort/so_rules
    var PREPROC_RULE_PATH /etc/snort/preproc_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


    ###################################################
    # 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

    ###################################################
    # 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

    ###################################################
    # 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
    ###################################################

    # 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: max_tcp 8192, track_tcp yes, track_udp yes, track_icmp no 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 6665 6666 6667 6668 6669
    7000 32770 32771 32772 32773 32774 32775 32776 32777 32778 32779,
    ports both 80 311 443 465 563 591 593 636 901 989 992 993 994 995 1220 1414 2301 2381 2809 3128 3702 5250 6907 7702 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 8028 8080 8088 8118 8123 8180 8243 8280 8888 9090 9091 9443 9999 11371
    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 20480 decompress_depth 20480
    preprocessor http_inspect_server: server default
    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
    ports 80 311 591 593 901 1220 1414 2301 2381 2809 3128 3702 5250 7777 7779 8000 8008 8028 8080 8088 8118 8123 8180 8243 8280 8888 9090 9091 9443 9999 11371
    non_rfc_char 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07
    enable_cookie
    extended_response_inspection
    inspect_gzip
    normalize_utf
    unlimited_decompress
    apache_whitespace no
    ascii no
    bare_byte no
    base36 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
    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 >
    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 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
    enable_mime_decoding
    max_mime_depth 20480
    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

    # 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 7702 7900 7901 7902 7903 7904 7905 7906 6907 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

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

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

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

    # syslog
    # output alert_syslog: LOG_AUTH LOG_ALERT

    # pcap
    # output log_tcpdump: tcpdump.log

    # 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/attack-responses.rules
    include $RULE_PATH/backdoor.rules
    include $RULE_PATH/bad-traffic.rules
    include $RULE_PATH/blacklist.rules
    include $RULE_PATH/botnet-cnc.rules
    include $RULE_PATH/chat.rules
    include $RULE_PATH/content-replace.rules
    include $RULE_PATH/ddos.rules
    include $RULE_PATH/dns.rules
    include $RULE_PATH/dos.rules
    include $RULE_PATH/exploit.rules
    include $RULE_PATH/finger.rules
    include $RULE_PATH/ftp.rules
    include $RULE_PATH/icmp.rules
    include $RULE_PATH/icmp-info.rules
    include $RULE_PATH/imap.rules
    include $RULE_PATH/info.rules
    include $RULE_PATH/misc.rules
    include $RULE_PATH/multimedia.rules
    include $RULE_PATH/mysql.rules
    include $RULE_PATH/netbios.rules
    include $RULE_PATH/nntp.rules
    include $RULE_PATH/oracle.rules
    include $RULE_PATH/other-ids.rules
    include $RULE_PATH/p2p.rules
    include $RULE_PATH/phishing-spam.rules
    include $RULE_PATH/policy.rules
    include $RULE_PATH/pop2.rules
    include $RULE_PATH/pop3.rules
    include $RULE_PATH/rpc.rules
    include $RULE_PATH/rservices.rules
    include $RULE_PATH/scada.rules
    include $RULE_PATH/scan.rules
    include $RULE_PATH/shellcode.rules
    include $RULE_PATH/smtp.rules
    include $RULE_PATH/snmp.rules
    include $RULE_PATH/specific-threats.rules
    include $RULE_PATH/spyware-put.rules
    include $RULE_PATH/sql.rules
    include $RULE_PATH/telnet.rules
    include $RULE_PATH/tftp.rules
    include $RULE_PATH/virus.rules
    include $RULE_PATH/voip.rules
    include $RULE_PATH/web-activex.rules
    include $RULE_PATH/web-attacks.rules
    include $RULE_PATH/web-cgi.rules
    include $RULE_PATH/web-client.rules
    include $RULE_PATH/web-coldfusion.rules
    include $RULE_PATH/web-frontpage.rules
    include $RULE_PATH/web-iis.rules
    include $RULE_PATH/web-misc.rules
    include $RULE_PATH/web-php.rules
    include $RULE_PATH/x11.rules

    ###################################################
    # 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/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/sql.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









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       victim@victim:~$ sudo snort -c /etc/snort/snort.conf



      --------------------------------------------------

      o")~ Snort++ 3.0.0-250

      --------------------------------------------------

      Loading /etc/snort/snort.conf:

      FATAL: can't load /etc/snort/snort.conf: /etc/snort/snort.conf:2: unexpected symbol near '#'

      Fatal Error, Quitting..




      I have tried previous post but nothing works.



      #--------------------------------------------------
      # VRT Rule Packages Snort.conf
      #
      # For more information visit us at:
      # http://www.snort.org Snort Website
      # http://vrt-sourcefire.blogspot.com/ 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 : 2.9.0.0
      #
      # Snort build options:
      # OPTIONS : --enable-ipv6 --enable-gre --enable-mpls --enable-targetbased --enable-decoder-preprocessor-rules --enable-ppm --enable-perfprofiling --enable-zlib --enable-active-response --enable-normalizer --enable-reload --enable-react --enable-flexresp3
      #--------------------------------------------------

      ###################################################
      # 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 ports you run web servers on
      portvar HTTP_PORTS [80,311,591,593,901,1220,1414,2301,2381,2809,3128,3702,5250,7777,7779,8000,8008,8028,8080,8088,8118,8123,8180,8243,8280,8888,9090,9091,9443,9999,11371]

      # 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

      # 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:snortrules
      var RULE_PATH /etc/snort/rules
      var SO_RULE_PATH /etc/snort/so_rules
      var PREPROC_RULE_PATH /etc/snort/preproc_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


      ###################################################
      # 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

      ###################################################
      # 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

      ###################################################
      # 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
      ###################################################

      # 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: max_tcp 8192, track_tcp yes, track_udp yes, track_icmp no 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 6665 6666 6667 6668 6669
      7000 32770 32771 32772 32773 32774 32775 32776 32777 32778 32779,
      ports both 80 311 443 465 563 591 593 636 901 989 992 993 994 995 1220 1414 2301 2381 2809 3128 3702 5250 6907 7702 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 8028 8080 8088 8118 8123 8180 8243 8280 8888 9090 9091 9443 9999 11371
      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 20480 decompress_depth 20480
      preprocessor http_inspect_server: server default
      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
      ports 80 311 591 593 901 1220 1414 2301 2381 2809 3128 3702 5250 7777 7779 8000 8008 8028 8080 8088 8118 8123 8180 8243 8280 8888 9090 9091 9443 9999 11371
      non_rfc_char 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07
      enable_cookie
      extended_response_inspection
      inspect_gzip
      normalize_utf
      unlimited_decompress
      apache_whitespace no
      ascii no
      bare_byte no
      base36 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
      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 >
      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 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
      enable_mime_decoding
      max_mime_depth 20480
      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

      # 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 7702 7900 7901 7902 7903 7904 7905 7906 6907 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

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

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

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

      # syslog
      # output alert_syslog: LOG_AUTH LOG_ALERT

      # pcap
      # output log_tcpdump: tcpdump.log

      # 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/attack-responses.rules
      include $RULE_PATH/backdoor.rules
      include $RULE_PATH/bad-traffic.rules
      include $RULE_PATH/blacklist.rules
      include $RULE_PATH/botnet-cnc.rules
      include $RULE_PATH/chat.rules
      include $RULE_PATH/content-replace.rules
      include $RULE_PATH/ddos.rules
      include $RULE_PATH/dns.rules
      include $RULE_PATH/dos.rules
      include $RULE_PATH/exploit.rules
      include $RULE_PATH/finger.rules
      include $RULE_PATH/ftp.rules
      include $RULE_PATH/icmp.rules
      include $RULE_PATH/icmp-info.rules
      include $RULE_PATH/imap.rules
      include $RULE_PATH/info.rules
      include $RULE_PATH/misc.rules
      include $RULE_PATH/multimedia.rules
      include $RULE_PATH/mysql.rules
      include $RULE_PATH/netbios.rules
      include $RULE_PATH/nntp.rules
      include $RULE_PATH/oracle.rules
      include $RULE_PATH/other-ids.rules
      include $RULE_PATH/p2p.rules
      include $RULE_PATH/phishing-spam.rules
      include $RULE_PATH/policy.rules
      include $RULE_PATH/pop2.rules
      include $RULE_PATH/pop3.rules
      include $RULE_PATH/rpc.rules
      include $RULE_PATH/rservices.rules
      include $RULE_PATH/scada.rules
      include $RULE_PATH/scan.rules
      include $RULE_PATH/shellcode.rules
      include $RULE_PATH/smtp.rules
      include $RULE_PATH/snmp.rules
      include $RULE_PATH/specific-threats.rules
      include $RULE_PATH/spyware-put.rules
      include $RULE_PATH/sql.rules
      include $RULE_PATH/telnet.rules
      include $RULE_PATH/tftp.rules
      include $RULE_PATH/virus.rules
      include $RULE_PATH/voip.rules
      include $RULE_PATH/web-activex.rules
      include $RULE_PATH/web-attacks.rules
      include $RULE_PATH/web-cgi.rules
      include $RULE_PATH/web-client.rules
      include $RULE_PATH/web-coldfusion.rules
      include $RULE_PATH/web-frontpage.rules
      include $RULE_PATH/web-iis.rules
      include $RULE_PATH/web-misc.rules
      include $RULE_PATH/web-php.rules
      include $RULE_PATH/x11.rules

      ###################################################
      # 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/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/sql.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









      share|improve this question
















       victim@victim:~$ sudo snort -c /etc/snort/snort.conf



      --------------------------------------------------

      o")~ Snort++ 3.0.0-250

      --------------------------------------------------

      Loading /etc/snort/snort.conf:

      FATAL: can't load /etc/snort/snort.conf: /etc/snort/snort.conf:2: unexpected symbol near '#'

      Fatal Error, Quitting..




      I have tried previous post but nothing works.



      #--------------------------------------------------
      # VRT Rule Packages Snort.conf
      #
      # For more information visit us at:
      # http://www.snort.org Snort Website
      # http://vrt-sourcefire.blogspot.com/ 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 : 2.9.0.0
      #
      # Snort build options:
      # OPTIONS : --enable-ipv6 --enable-gre --enable-mpls --enable-targetbased --enable-decoder-preprocessor-rules --enable-ppm --enable-perfprofiling --enable-zlib --enable-active-response --enable-normalizer --enable-reload --enable-react --enable-flexresp3
      #--------------------------------------------------

      ###################################################
      # 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 ports you run web servers on
      portvar HTTP_PORTS [80,311,591,593,901,1220,1414,2301,2381,2809,3128,3702,5250,7777,7779,8000,8008,8028,8080,8088,8118,8123,8180,8243,8280,8888,9090,9091,9443,9999,11371]

      # 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

      # 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:snortrules
      var RULE_PATH /etc/snort/rules
      var SO_RULE_PATH /etc/snort/so_rules
      var PREPROC_RULE_PATH /etc/snort/preproc_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


      ###################################################
      # 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

      ###################################################
      # 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

      ###################################################
      # 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
      ###################################################

      # 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: max_tcp 8192, track_tcp yes, track_udp yes, track_icmp no 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 6665 6666 6667 6668 6669
      7000 32770 32771 32772 32773 32774 32775 32776 32777 32778 32779,
      ports both 80 311 443 465 563 591 593 636 901 989 992 993 994 995 1220 1414 2301 2381 2809 3128 3702 5250 6907 7702 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 8028 8080 8088 8118 8123 8180 8243 8280 8888 9090 9091 9443 9999 11371
      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 20480 decompress_depth 20480
      preprocessor http_inspect_server: server default
      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
      ports 80 311 591 593 901 1220 1414 2301 2381 2809 3128 3702 5250 7777 7779 8000 8008 8028 8080 8088 8118 8123 8180 8243 8280 8888 9090 9091 9443 9999 11371
      non_rfc_char 0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07
      enable_cookie
      extended_response_inspection
      inspect_gzip
      normalize_utf
      unlimited_decompress
      apache_whitespace no
      ascii no
      bare_byte no
      base36 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
      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 >
      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 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
      enable_mime_decoding
      max_mime_depth 20480
      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

      # 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 7702 7900 7901 7902 7903 7904 7905 7906 6907 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

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

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

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

      # syslog
      # output alert_syslog: LOG_AUTH LOG_ALERT

      # pcap
      # output log_tcpdump: tcpdump.log

      # 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/attack-responses.rules
      include $RULE_PATH/backdoor.rules
      include $RULE_PATH/bad-traffic.rules
      include $RULE_PATH/blacklist.rules
      include $RULE_PATH/botnet-cnc.rules
      include $RULE_PATH/chat.rules
      include $RULE_PATH/content-replace.rules
      include $RULE_PATH/ddos.rules
      include $RULE_PATH/dns.rules
      include $RULE_PATH/dos.rules
      include $RULE_PATH/exploit.rules
      include $RULE_PATH/finger.rules
      include $RULE_PATH/ftp.rules
      include $RULE_PATH/icmp.rules
      include $RULE_PATH/icmp-info.rules
      include $RULE_PATH/imap.rules
      include $RULE_PATH/info.rules
      include $RULE_PATH/misc.rules
      include $RULE_PATH/multimedia.rules
      include $RULE_PATH/mysql.rules
      include $RULE_PATH/netbios.rules
      include $RULE_PATH/nntp.rules
      include $RULE_PATH/oracle.rules
      include $RULE_PATH/other-ids.rules
      include $RULE_PATH/p2p.rules
      include $RULE_PATH/phishing-spam.rules
      include $RULE_PATH/policy.rules
      include $RULE_PATH/pop2.rules
      include $RULE_PATH/pop3.rules
      include $RULE_PATH/rpc.rules
      include $RULE_PATH/rservices.rules
      include $RULE_PATH/scada.rules
      include $RULE_PATH/scan.rules
      include $RULE_PATH/shellcode.rules
      include $RULE_PATH/smtp.rules
      include $RULE_PATH/snmp.rules
      include $RULE_PATH/specific-threats.rules
      include $RULE_PATH/spyware-put.rules
      include $RULE_PATH/sql.rules
      include $RULE_PATH/telnet.rules
      include $RULE_PATH/tftp.rules
      include $RULE_PATH/virus.rules
      include $RULE_PATH/voip.rules
      include $RULE_PATH/web-activex.rules
      include $RULE_PATH/web-attacks.rules
      include $RULE_PATH/web-cgi.rules
      include $RULE_PATH/web-client.rules
      include $RULE_PATH/web-coldfusion.rules
      include $RULE_PATH/web-frontpage.rules
      include $RULE_PATH/web-iis.rules
      include $RULE_PATH/web-misc.rules
      include $RULE_PATH/web-php.rules
      include $RULE_PATH/x11.rules

      ###################################################
      # 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/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/sql.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






      ubuntu-18.04 snort






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      edited Mar 21 at 18:07









      Jason Aller

      3,08693133




      3,08693133










      asked Mar 21 at 17:15









      qovaqova

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