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%YAML 1.1
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---
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# Suricata configuration file. In addition to the comments describing all
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# options in this file, full documentation can be found at:
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# https://redmine.openinfosecfoundation.org/projects/suricata/wiki/Suricatayaml
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##
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## Step 1: inform Suricata about your network
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##
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vars:
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# more specifc is better for alert accuracy and performance
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address-groups:
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HOME_NET: "[192.168.0.0/16]"
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EXTERNAL_NET: "!$HOME_NET"
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HTTP_SERVERS: "$HOME_NET"
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SMTP_SERVERS: "$HOME_NET"
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SQL_SERVERS: "$HOME_NET"
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DNS_SERVERS: "$HOME_NET"
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TELNET_SERVERS: "$HOME_NET"
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AIM_SERVERS: "$EXTERNAL_NET"
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DNP3_SERVER: "$HOME_NET"
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DNP3_CLIENT: "$HOME_NET"
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MODBUS_CLIENT: "$HOME_NET"
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MODBUS_SERVER: "$HOME_NET"
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ENIP_CLIENT: "$HOME_NET"
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ENIP_SERVER: "$HOME_NET"
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port-groups:
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HTTP_PORTS: "80"
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SHELLCODE_PORTS: "!80"
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ORACLE_PORTS: 1521
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SSH_PORTS: 22
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DNP3_PORTS: 20000
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MODBUS_PORTS: 502
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##
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## Step 2: select the rules to enable or disable
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##
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default-rule-path: /usr/local/etc/suricata/rules
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rule-files:
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- emerging-current_events.rules
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classification-file: /usr/local/etc/suricata/classification.config
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reference-config-file: /usr/local/etc/suricata/reference.config
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# threshold-file: /usr/local/etc/suricata/threshold.config
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##
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## Step 3: select outputs to enable
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##
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# The default logging directory. Any log or output file will be
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# placed here if its not specified with a full path name. This can be
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# overridden with the -l command line parameter.
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default-log-dir: /var/log/suricata_ac/
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# global stats configuration
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stats:
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enabled: yes
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# The interval field (in seconds) controls at what interval
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# the loggers are invoked.
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interval: 8
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# Configure the type of alert (and other) logging you would like.
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outputs:
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# a line based alerts log similar to Snort's fast.log
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- fast:
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enabled: yes
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filename: fast.log
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append: yes
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#filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
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# Extensible Event Format (nicknamed EVE) event log in JSON format
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- eve-log:
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enabled: no
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# a full alerts log containing much information for signature writers
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# or for investigating suspected false positives.
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- alert-debug:
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enabled: yes
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filename: alert-debug.log
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append: yes
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#filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
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# Stats.log contains data from various counters of the suricata engine.
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- stats:
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enabled: yes
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filename: stats.log
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totals: yes # stats for all threads merged together
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threads: no # per thread stats
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#null-values: yes # print counters that have value 0
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# a line based information for dropped packets in IPS mode
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- drop:
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enabled: yes
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filename: drop.log
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append: yes
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#filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
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# Logging configuration. This is not about logging IDS alerts/events, but
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# output about what Suricata is doing, like startup messages, errors, etc.
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logging:
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# The default log level, can be overridden in an output section.
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# Note that debug level logging will only be emitted if Suricata was
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# compiled with the --enable-debug configure option.
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#
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# This value is overriden by the SC_LOG_LEVEL env var.
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default-log-level: debug
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##
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## Step 4: configure common capture settings
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##
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## See "Advanced Capture Options" below for more options, including NETMAP
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## and PF_RING.
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##
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##
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## Step 5: App Layer Protocol Configuration
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##
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# Configure the app-layer parsers. The protocols section details each
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# protocol.
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#
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# The option "enabled" takes 3 values - "yes", "no", "detection-only".
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# "yes" enables both detection and the parser, "no" disables both, and
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# "detection-only" enables protocol detection only (parser disabled).
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app-layer:
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protocols:
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tls:
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enabled: yes
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detection-ports:
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dp: 443
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# Completely stop processing TLS/SSL session after the handshake
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# completed. If bypass is enabled this will also trigger flow
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# bypass. If disabled (the default), TLS/SSL session is still
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# tracked for Heartbleed and other anomalies.
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#no-reassemble: yes
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dcerpc:
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enabled: yes
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ftp:
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enabled: yes
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ssh:
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enabled: yes
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smtp:
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enabled: yes
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# Configure SMTP-MIME Decoder
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mime:
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# Decode MIME messages from SMTP transactions
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# (may be resource intensive)
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# This field supercedes all others because it turns the entire
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# process on or off
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decode-mime: yes
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# Decode MIME entity bodies (ie. base64, quoted-printable, etc.)
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decode-base64: yes
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decode-quoted-printable: yes
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# Maximum bytes per header data value stored in the data structure
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# (default is 2000)
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header-value-depth: 2000
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# Extract URLs and save in state data structure
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extract-urls: yes
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# Set to yes to compute the md5 of the mail body. You will then
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# be able to journalize it.
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body-md5: no
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# Configure inspected-tracker for file_data keyword
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inspected-tracker:
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content-limit: 100000
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content-inspect-min-size: 32768
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content-inspect-window: 4096
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imap:
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enabled: detection-only
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msn:
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enabled: detection-only
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smb:
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enabled: yes
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detection-ports:
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dp: 139
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# smb2 detection is disabled internally inside the engine.
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#smb2:
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# enabled: yes
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dns:
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# memcaps. Globally and per flow/state.
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#global-memcap: 16mb
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#state-memcap: 512kb
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# How many unreplied DNS requests are considered a flood.
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# If the limit is reached, app-layer-event:dns.flooded; will match.
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#request-flood: 500
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tcp:
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enabled: yes
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detection-ports:
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dp: 53
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udp:
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enabled: yes
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detection-ports:
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dp: 53
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http:
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enabled: yes
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# memcap: 64mb
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# default-config: Used when no server-config matches
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libhtp:
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default-config:
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personality: IDS
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# Can be specified in kb, mb, gb. Just a number indicates
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# it's in bytes.
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request-body-limit: 100kb
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response-body-limit: 100kb
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# inspection limits
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request-body-minimal-inspect-size: 32kb
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request-body-inspect-window: 4kb
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response-body-minimal-inspect-size: 40kb
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response-body-inspect-window: 16kb
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# response body decompression (0 disables)
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response-body-decompress-layer-limit: 2
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# auto will use http-body-inline mode in IPS mode, yes or no set it statically
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http-body-inline: auto
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# decoding
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double-decode-path: no
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double-decode-query: no
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server-config:
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modbus:
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enabled: no
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detection-ports:
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dp: 502
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# Stream reassembly size for modbus. By default track it completely.
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stream-depth: 0
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# DNP3
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dnp3:
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enabled: no
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detection-ports:
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dp: 20000
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# SCADA EtherNet/IP and CIP protocol support
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enip:
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enabled: no
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detection-ports:
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dp: 44818
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sp: 44818
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# Limit for the maximum number of asn1 frames to decode (default 256)
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asn1-max-frames: 256
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##############################################################################
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##
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## Advanced settings below
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##
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##############################################################################
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coredump:
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max-dump: unlimited
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host-mode: auto
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runmode: workers
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default-packet-size: 9014
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legacy:
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uricontent: enabled
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# Set the order of alerts bassed on actions
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# The default order is pass, drop, reject, alert
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# action-order:
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# - pass
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# - drop
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# - reject
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# - alert
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# IP Reputation
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#reputation-categories-file: /usr/local/etc/suricata/iprep/categories.txt
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#default-reputation-path: /usr/local/etc/suricata/iprep
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#reputation-files:
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# - reputation.list
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# When run with the option --engine-analysis, the engine will read each of
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# the parameters below, and print reports for each of the enabled sections
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# and exit. The reports are printed to a file in the default log dir
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# given by the parameter "default-log-dir", with engine reporting
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# subsection below printing reports in its own report file.
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engine-analysis:
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# enables printing reports for fast-pattern for every rule.
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rules-fast-pattern: yes
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# enables printing reports for each rule
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rules: yes
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#recursion and match limits for PCRE where supported
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pcre:
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match-limit: 3500
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match-limit-recursion: 1500
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##
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## Advanced Traffic Tracking and Reconstruction Settings
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##
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# Host specific policies for defragmentation and TCP stream
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# reassembly. The host OS lookup is done using a radix tree, just
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# like a routing table so the most specific entry matches.
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host-os-policy:
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# Make the default policy windows.
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windows: [0.0.0.0/0]
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bsd: []
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bsd-right: []
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old-linux: []
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linux: []
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old-solaris: []
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solaris: []
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hpux10: []
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hpux11: []
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irix: []
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macos: []
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vista: []
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windows2k3: []
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# Defrag settings:
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defrag:
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memcap: 32mb
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hash-size: 65536
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trackers: 65535 # number of defragmented flows to follow
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max-frags: 65535 # number of fragments to keep (higher than trackers)
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prealloc: yes
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timeout: 60
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# Flow settings:
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flow:
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memcap: 512mb
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hash-size: 65536
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prealloc: 10000
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emergency-recovery: 30
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vlan:
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use-for-tracking: true
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flow-timeouts:
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default:
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new: 30
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established: 300
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closed: 0
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bypassed: 100
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emergency-new: 10
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emergency-established: 100
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emergency-closed: 0
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emergency-bypassed: 50
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tcp:
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new: 60
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established: 600
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closed: 60
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bypassed: 100
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emergency-new: 5
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emergency-established: 100
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emergency-closed: 10
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emergency-bypassed: 50
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udp:
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new: 30
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established: 300
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bypassed: 100
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emergency-new: 10
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emergency-established: 100
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emergency-bypassed: 50
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icmp:
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new: 30
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established: 300
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bypassed: 100
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emergency-new: 10
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emergency-established: 100
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emergency-bypassed: 50
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stream:
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memcap: 256mb
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checksum-validation: yes # reject wrong csums
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inline: auto # auto will use inline mode in IPS mode, yes or no set it statically
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reassembly:
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memcap: 256mb
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depth: 1mb # reassemble 1mb into a stream
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toserver-chunk-size: 2560
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toclient-chunk-size: 2560
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randomize-chunk-size: yes
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# Host table:
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host:
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hash-size: 4096
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prealloc: 1000
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memcap: 32mb
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detect:
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profile: medium
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custom-values:
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toclient-groups: 3
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toserver-groups: 25
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sgh-mpm-context: auto
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inspection-recursion-limit: 3000
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prefilter:
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default: mpm
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grouping:
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profiling:
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grouping:
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dump-to-disk: false
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include-rules: false # very verbose
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include-mpm-stats: false
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mpm-algo: auto
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spm-algo: auto
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# Suricata is multi-threaded. Here the threading can be influenced.
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threading:
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set-cpu-affinity: no
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detect-thread-ratio: 1.0
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# Luajit has a strange memory requirement, it's 'states' need to be in the
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# first 2G of the process' memory.
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#
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# 'luajit.states' is used to control how many states are preallocated.
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# State use: per detect script: 1 per detect thread. Per output script: 1 per
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# script.
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luajit:
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states: 128
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# Profiling settings. Only effective if Suricata has been built with the
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# the --enable-profiling configure flag.
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#
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profiling:
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# Run profiling for every xth packet. The default is 1, which means we
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# profile every packet. If set to 1000, one packet is profiled for every
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# 1000 received.
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#sample-rate: 1000
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# rule profiling
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rules:
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# Profiling can be disabled here, but it will still have a
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# performance impact if compiled in.
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enabled: yes
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filename: rule_perf.log
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append: yes
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# Sort options: ticks, avgticks, checks, matches, maxticks
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sort: avgticks
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# Limit the number of items printed at exit (ignored for json).
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limit: 100
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# output to json
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json: yes
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# per keyword profiling
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keywords:
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enabled: yes
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filename: keyword_perf.log
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append: yes
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# per rulegroup profiling
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rulegroups:
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enabled: yes
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filename: rule_group_perf.log
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append: yes
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# packet profiling
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packets:
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# Profiling can be disabled here, but it will still have a
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# performance impact if compiled in.
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enabled: yes
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filename: packet_stats.log
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append: yes
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# per packet csv output
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csv:
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# Output can be disabled here, but it will still have a
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# performance impact if compiled in.
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enabled: no
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filename: packet_stats.csv
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# profiling of locking. Only available when Suricata was built with
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# --enable-profiling-locks.
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locks:
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enabled: no
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filename: lock_stats.log
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append: yes
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pcap-log:
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enabled: no
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filename: pcaplog_stats.log
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append: yes
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# Netmap support
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netmap:
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# To specify OS endpoint add plus sign at the end (e.g. "eth0+")
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- interface: int
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threads: auto
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copy-mode: ips
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copy-iface: int+
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- interface: int+
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threads: auto
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copy-mode: ips
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copy-iface: int
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- interface: default
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