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1893 lines
71 KiB
YAML
1893 lines
71 KiB
YAML
%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://suricata.readthedocs.io/en/latest/configuration/suricata-yaml.html
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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 specific is better for alert accuracy and performance
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address-groups:
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HOME_NET: "[192.168.0.0/16,10.0.0.0/8,172.16.0.0/12]"
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#HOME_NET: "[192.168.0.0/16]"
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#HOME_NET: "[10.0.0.0/8]"
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#HOME_NET: "[172.16.0.0/12]"
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#HOME_NET: "any"
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EXTERNAL_NET: "!$HOME_NET"
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#EXTERNAL_NET: "any"
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HTTP_SERVERS: "$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: "$EXTERNAL_NET"
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DC_SERVERS: "$HOME_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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FILE_DATA_PORTS: "[$HTTP_PORTS,110,143]"
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FTP_PORTS: 21
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GENEVE_PORTS: 6081
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VXLAN_PORTS: 4789
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TEREDO_PORTS: 3544
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##
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## Step 2: 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 it's 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: @e_logdir@
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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 the interval at
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# which stats are updated in the log.
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interval: 8
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# Add decode events to stats.
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#decoder-events: true
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# Decoder event prefix in stats. Has been 'decoder' before, but that leads
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# to missing events in the eve.stats records. See issue #2225.
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#decoder-events-prefix: "decoder.event"
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# Add stream events as stats.
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#stream-events: false
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# Plugins -- Experimental -- specify the filename for each plugin shared object
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plugins:
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# - /path/to/plugin.so
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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: @e_enable_evelog@
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filetype: regular #regular|syslog|unix_dgram|unix_stream|redis
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filename: eve.json
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# Enable for multi-threaded eve.json output; output files are amended with
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# with an identifier, e.g., eve.9.json
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#threaded: false
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#prefix: "@cee: " # prefix to prepend to each log entry
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# the following are valid when type: syslog above
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#identity: "suricata"
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#facility: local5
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#level: Info ## possible levels: Emergency, Alert, Critical,
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## Error, Warning, Notice, Info, Debug
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#ethernet: no # log ethernet header in events when available
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#redis:
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# server: 127.0.0.1
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# port: 6379
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# async: true ## if redis replies are read asynchronously
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# mode: list ## possible values: list|lpush (default), rpush, channel|publish
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# ## lpush and rpush are using a Redis list. "list" is an alias for lpush
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# ## publish is using a Redis channel. "channel" is an alias for publish
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# key: suricata ## key or channel to use (default to suricata)
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# Redis pipelining set up. This will enable to only do a query every
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# 'batch-size' events. This should lower the latency induced by network
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# connection at the cost of some memory. There is no flushing implemented
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# so this setting should be reserved to high traffic Suricata deployments.
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# pipelining:
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# enabled: yes ## set enable to yes to enable query pipelining
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# batch-size: 10 ## number of entries to keep in buffer
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# Include top level metadata. Default yes.
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#metadata: no
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# include the name of the input pcap file in pcap file processing mode
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pcap-file: false
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# Community Flow ID
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# Adds a 'community_id' field to EVE records. These are meant to give
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# records a predictable flow ID that can be used to match records to
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# output of other tools such as Zeek (Bro).
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#
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# Takes a 'seed' that needs to be same across sensors and tools
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# to make the id less predictable.
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# enable/disable the community id feature.
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community-id: false
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# Seed value for the ID output. Valid values are 0-65535.
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community-id-seed: 0
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# HTTP X-Forwarded-For support by adding an extra field or overwriting
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# the source or destination IP address (depending on flow direction)
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# with the one reported in the X-Forwarded-For HTTP header. This is
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# helpful when reviewing alerts for traffic that is being reverse
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# or forward proxied.
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xff:
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enabled: no
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# Two operation modes are available: "extra-data" and "overwrite".
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mode: extra-data
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# Two proxy deployments are supported: "reverse" and "forward". In
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# a "reverse" deployment the IP address used is the last one, in a
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# "forward" deployment the first IP address is used.
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deployment: reverse
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# Header name where the actual IP address will be reported. If more
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# than one IP address is present, the last IP address will be the
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# one taken into consideration.
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header: X-Forwarded-For
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types:
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- alert:
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# payload: yes # enable dumping payload in Base64
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# payload-buffer-size: 4kb # max size of payload buffer to output in eve-log
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# payload-printable: yes # enable dumping payload in printable (lossy) format
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# packet: yes # enable dumping of packet (without stream segments)
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# metadata: no # enable inclusion of app layer metadata with alert. Default yes
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# http-body: yes # Requires metadata; enable dumping of HTTP body in Base64
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# http-body-printable: yes # Requires metadata; enable dumping of HTTP body in printable format
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# Enable the logging of tagged packets for rules using the
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# "tag" keyword.
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tagged-packets: yes
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- anomaly:
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# Anomaly log records describe unexpected conditions such
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# as truncated packets, packets with invalid IP/UDP/TCP
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# length values, and other events that render the packet
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# invalid for further processing or describe unexpected
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# behavior on an established stream. Networks which
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# experience high occurrences of anomalies may experience
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# packet processing degradation.
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#
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# Anomalies are reported for the following:
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# 1. Decode: Values and conditions that are detected while
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# decoding individual packets. This includes invalid or
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# unexpected values for low-level protocol lengths as well
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# as stream related events (TCP 3-way handshake issues,
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# unexpected sequence number, etc).
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# 2. Stream: This includes stream related events (TCP
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# 3-way handshake issues, unexpected sequence number,
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# etc).
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# 3. Application layer: These denote application layer
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# specific conditions that are unexpected, invalid or are
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# unexpected given the application monitoring state.
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#
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# By default, anomaly logging is enabled. When anomaly
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# logging is enabled, applayer anomaly reporting is
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# also enabled.
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enabled: yes
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#
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# Choose one or more types of anomaly logging and whether to enable
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# logging of the packet header for packet anomalies.
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types:
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# decode: no
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# stream: no
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# applayer: yes
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#packethdr: no
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- http:
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extended: yes # enable this for extended logging information
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# custom allows additional HTTP fields to be included in eve-log.
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# the example below adds three additional fields when uncommented
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#custom: [Accept-Encoding, Accept-Language, Authorization]
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# set this value to one and only one from {both, request, response}
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# to dump all HTTP headers for every HTTP request and/or response
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# dump-all-headers: none
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- dns:
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# This configuration uses the new DNS logging format,
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# the old configuration is still available:
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# https://suricata.readthedocs.io/en/latest/output/eve/eve-json-output.html#dns-v1-format
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# As of Suricata 5.0, version 2 of the eve dns output
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# format is the default.
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#version: 2
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# Enable/disable this logger. Default: enabled.
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#enabled: yes
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# Control logging of requests and responses:
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# - requests: enable logging of DNS queries
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# - responses: enable logging of DNS answers
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# By default both requests and responses are logged.
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#requests: no
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#responses: no
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# Format of answer logging:
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# - detailed: array item per answer
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# - grouped: answers aggregated by type
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# Default: all
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#formats: [detailed, grouped]
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# DNS record types to log, based on the query type.
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# Default: all.
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#types: [a, aaaa, cname, mx, ns, ptr, txt]
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- tls:
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extended: yes # enable this for extended logging information
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# output TLS transaction where the session is resumed using a
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# session id
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#session-resumption: no
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# custom controls which TLS fields that are included in eve-log
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#custom: [subject, issuer, session_resumed, serial, fingerprint, sni, version, not_before, not_after, certificate, chain, ja3, ja3s]
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- files:
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force-magic: no # force logging magic on all logged files
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# force logging of checksums, available hash functions are md5,
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# sha1 and sha256
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#force-hash: [md5]
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#- drop:
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# alerts: yes # log alerts that caused drops
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# flows: all # start or all: 'start' logs only a single drop
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# # per flow direction. All logs each dropped pkt.
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- smtp:
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#extended: yes # enable this for extended logging information
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# this includes: bcc, message-id, subject, x_mailer, user-agent
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# custom fields logging from the list:
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# reply-to, bcc, message-id, subject, x-mailer, user-agent, received,
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# x-originating-ip, in-reply-to, references, importance, priority,
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# sensitivity, organization, content-md5, date
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#custom: [received, x-mailer, x-originating-ip, relays, reply-to, bcc]
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# output md5 of fields: body, subject
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# for the body you need to set app-layer.protocols.smtp.mime.body-md5
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# to yes
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#md5: [body, subject]
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#- dnp3
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- ftp
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- rdp
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- nfs
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- smb
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- tftp
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- ike
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- dcerpc
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- krb5
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- snmp
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- rfb
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- sip
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- dhcp:
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enabled: yes
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# When extended mode is on, all DHCP messages are logged
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# with full detail. When extended mode is off (the
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# default), just enough information to map a MAC address
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# to an IP address is logged.
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extended: no
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- ssh
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- mqtt:
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# passwords: yes # enable output of passwords
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# HTTP2 logging. HTTP2 support is currently experimental and
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# disabled by default. To enable, uncomment the following line
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# and be sure to enable http2 in the app-layer section.
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#- http2
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- stats:
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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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deltas: no # include delta values
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# bi-directional flows
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- flow
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# uni-directional flows
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#- netflow
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# Metadata event type. Triggered whenever a pktvar is saved
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# and will include the pktvars, flowvars, flowbits and
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# flowints.
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#- metadata
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# a line based log of HTTP requests (no alerts)
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- http-log:
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enabled: no
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filename: http.log
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append: yes
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#extended: yes # enable this for extended logging information
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#custom: yes # enable the custom logging format (defined by customformat)
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#customformat: "%{%D-%H:%M:%S}t.%z %{X-Forwarded-For}i %H %m %h %u %s %B %a:%p -> %A:%P"
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#filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
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# a line based log of TLS handshake parameters (no alerts)
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- tls-log:
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enabled: no # Log TLS connections.
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filename: tls.log # File to store TLS logs.
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append: yes
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#extended: yes # Log extended information like fingerprint
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#custom: yes # enabled the custom logging format (defined by customformat)
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#customformat: "%{%D-%H:%M:%S}t.%z %a:%p -> %A:%P %v %n %d %D"
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#filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
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# output TLS transaction where the session is resumed using a
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# session id
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#session-resumption: no
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# output module to store certificates chain to disk
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- tls-store:
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enabled: no
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#certs-log-dir: certs # directory to store the certificates files
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# Packet log... log packets in pcap format. 3 modes of operation: "normal"
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# "multi" and "sguil".
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#
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# In normal mode a pcap file "filename" is created in the default-log-dir,
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# or as specified by "dir".
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# In multi mode, a file is created per thread. This will perform much
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# better, but will create multiple files where 'normal' would create one.
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# In multi mode the filename takes a few special variables:
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# - %n -- thread number
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# - %i -- thread id
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# - %t -- timestamp (secs or secs.usecs based on 'ts-format'
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# E.g. filename: pcap.%n.%t
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#
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# Note that it's possible to use directories, but the directories are not
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# created by Suricata. E.g. filename: pcaps/%n/log.%s will log into the
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# per thread directory.
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#
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# Also note that the limit and max-files settings are enforced per thread.
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# So the size limit when using 8 threads with 1000mb files and 2000 files
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# is: 8*1000*2000 ~ 16TiB.
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#
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# In Sguil mode "dir" indicates the base directory. In this base dir the
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# pcaps are created in the directory structure Sguil expects:
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#
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# $sguil-base-dir/YYYY-MM-DD/$filename.<timestamp>
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#
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# By default all packets are logged except:
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# - TCP streams beyond stream.reassembly.depth
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# - encrypted streams after the key exchange
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#
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- pcap-log:
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enabled: no
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filename: log.pcap
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# File size limit. Can be specified in kb, mb, gb. Just a number
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# is parsed as bytes.
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limit: 1000mb
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# If set to a value, ring buffer mode is enabled. Will keep maximum of
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# "max-files" of size "limit"
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max-files: 2000
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# Compression algorithm for pcap files. Possible values: none, lz4.
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# Enabling compression is incompatible with the sguil mode. Note also
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# that on Windows, enabling compression will *increase* disk I/O.
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compression: none
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# Further options for lz4 compression. The compression level can be set
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# to a value between 0 and 16, where higher values result in higher
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# compression.
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#lz4-checksum: no
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#lz4-level: 0
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mode: normal # normal, multi or sguil.
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# Directory to place pcap files. If not provided the default log
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# directory will be used. Required for "sguil" mode.
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#dir: /nsm_data/
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#ts-format: usec # sec or usec second format (default) is filename.sec usec is filename.sec.usec
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use-stream-depth: no #If set to "yes" packets seen after reaching stream inspection depth are ignored. "no" logs all packets
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honor-pass-rules: no # If set to "yes", flows in which a pass rule matched will stop being logged.
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# a full alert 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: no
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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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# alert output to prelude (https://www.prelude-siem.org/) only
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# available if Suricata has been compiled with --enable-prelude
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- alert-prelude:
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enabled: no
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profile: suricata
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log-packet-content: no
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log-packet-header: yes
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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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append: yes # append to file (yes) or overwrite it (no)
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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. Default: no
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# a line based alerts log similar to fast.log into syslog
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- syslog:
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enabled: no
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# reported identity to syslog. If omitted the program name (usually
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# suricata) will be used.
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#identity: "suricata"
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facility: local5
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#level: Info ## possible levels: Emergency, Alert, Critical,
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## Error, Warning, Notice, Info, Debug
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# Output module for storing files on disk. Files are stored in
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# directory names consisting of the first 2 characters of the
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# SHA256 of the file. Each file is given its SHA256 as a filename.
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#
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# When a duplicate file is found, the timestamps on the existing file
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# are updated.
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#
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# Unlike the older filestore, metadata is not written by default
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# as each file should already have a "fileinfo" record in the
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# eve-log. If write-fileinfo is set to yes, then each file will have
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# one more associated .json files that consist of the fileinfo
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# record. A fileinfo file will be written for each occurrence of the
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# file seen using a filename suffix to ensure uniqueness.
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#
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# To prune the filestore directory see the "suricatactl filestore
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# prune" command which can delete files over a certain age.
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- file-store:
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version: 2
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enabled: no
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# Set the directory for the filestore. Relative pathnames
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# are contained within the "default-log-dir".
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#dir: filestore
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# Write out a fileinfo record for each occurrence of a file.
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# Disabled by default as each occurrence is already logged
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# as a fileinfo record to the main eve-log.
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#write-fileinfo: yes
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# Force storing of all files. Default: no.
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#force-filestore: yes
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# Override the global stream-depth for sessions in which we want
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# to perform file extraction. Set to 0 for unlimited; otherwise,
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# must be greater than the global stream-depth value to be used.
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#stream-depth: 0
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# Uncomment the following variable to define how many files can
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# remain open for filestore by Suricata. Default value is 0 which
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# means files get closed after each write to the file.
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#max-open-files: 1000
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|
# Force logging of checksums: available hash functions are md5,
|
|
# sha1 and sha256. Note that SHA256 is automatically forced by
|
|
# the use of this output module as it uses the SHA256 as the
|
|
# file naming scheme.
|
|
#force-hash: [sha1, md5]
|
|
# NOTE: X-Forwarded configuration is ignored if write-fileinfo is disabled
|
|
# HTTP X-Forwarded-For support by adding an extra field or overwriting
|
|
# the source or destination IP address (depending on flow direction)
|
|
# with the one reported in the X-Forwarded-For HTTP header. This is
|
|
# helpful when reviewing alerts for traffic that is being reverse
|
|
# or forward proxied.
|
|
xff:
|
|
enabled: no
|
|
# Two operation modes are available, "extra-data" and "overwrite".
|
|
mode: extra-data
|
|
# Two proxy deployments are supported, "reverse" and "forward". In
|
|
# a "reverse" deployment the IP address used is the last one, in a
|
|
# "forward" deployment the first IP address is used.
|
|
deployment: reverse
|
|
# Header name where the actual IP address will be reported. If more
|
|
# than one IP address is present, the last IP address will be the
|
|
# one taken into consideration.
|
|
header: X-Forwarded-For
|
|
|
|
# Log TCP data after stream normalization
|
|
# Two types: file or dir:
|
|
# - file logs into a single logfile.
|
|
# - dir creates 2 files per TCP session and stores the raw TCP
|
|
# data into them.
|
|
# Use 'both' to enable both file and dir modes.
|
|
#
|
|
# Note: limited by "stream.reassembly.depth"
|
|
- tcp-data:
|
|
enabled: no
|
|
type: file
|
|
filename: tcp-data.log
|
|
|
|
# Log HTTP body data after normalization, de-chunking and unzipping.
|
|
# Two types: file or dir.
|
|
# - file logs into a single logfile.
|
|
# - dir creates 2 files per HTTP session and stores the
|
|
# normalized data into them.
|
|
# Use 'both' to enable both file and dir modes.
|
|
#
|
|
# Note: limited by the body limit settings
|
|
- http-body-data:
|
|
enabled: no
|
|
type: file
|
|
filename: http-data.log
|
|
|
|
# Lua Output Support - execute lua script to generate alert and event
|
|
# output.
|
|
# Documented at:
|
|
# https://suricata.readthedocs.io/en/latest/output/lua-output.html
|
|
- lua:
|
|
enabled: no
|
|
#scripts-dir: /etc/suricata/lua-output/
|
|
scripts:
|
|
# - script1.lua
|
|
|
|
# Logging configuration. This is not about logging IDS alerts/events, but
|
|
# output about what Suricata is doing, like startup messages, errors, etc.
|
|
logging:
|
|
# The default log level: can be overridden in an output section.
|
|
# Note that debug level logging will only be emitted if Suricata was
|
|
# compiled with the --enable-debug configure option.
|
|
#
|
|
# This value is overridden by the SC_LOG_LEVEL env var.
|
|
default-log-level: notice
|
|
|
|
# The default output format. Optional parameter, should default to
|
|
# something reasonable if not provided. Can be overridden in an
|
|
# output section. You can leave this out to get the default.
|
|
#
|
|
# This value is overridden by the SC_LOG_FORMAT env var.
|
|
#default-log-format: "[%i] %t - (%f:%l) <%d> (%n) -- "
|
|
|
|
# A regex to filter output. Can be overridden in an output section.
|
|
# Defaults to empty (no filter).
|
|
#
|
|
# This value is overridden by the SC_LOG_OP_FILTER env var.
|
|
default-output-filter:
|
|
|
|
# Define your logging outputs. If none are defined, or they are all
|
|
# disabled you will get the default: console output.
|
|
outputs:
|
|
- console:
|
|
enabled: yes
|
|
# type: json
|
|
- file:
|
|
enabled: yes
|
|
level: info
|
|
filename: suricata.log
|
|
# type: json
|
|
- syslog:
|
|
enabled: no
|
|
facility: local5
|
|
format: "[%i] <%d> -- "
|
|
# type: json
|
|
|
|
|
|
##
|
|
## Step 3: Configure common capture settings
|
|
##
|
|
## See "Advanced Capture Options" below for more options, including Netmap
|
|
## and PF_RING.
|
|
##
|
|
|
|
# Linux high speed capture support
|
|
af-packet:
|
|
- interface: eth0
|
|
# Number of receive threads. "auto" uses the number of cores
|
|
#threads: auto
|
|
# Default clusterid. AF_PACKET will load balance packets based on flow.
|
|
cluster-id: 99
|
|
# Default AF_PACKET cluster type. AF_PACKET can load balance per flow or per hash.
|
|
# This is only supported for Linux kernel > 3.1
|
|
# possible value are:
|
|
# * cluster_flow: all packets of a given flow are sent to the same socket
|
|
# * cluster_cpu: all packets treated in kernel by a CPU are sent to the same socket
|
|
# * cluster_qm: all packets linked by network card to a RSS queue are sent to the same
|
|
# socket. Requires at least Linux 3.14.
|
|
# * cluster_ebpf: eBPF file load balancing. See doc/userguide/capture-hardware/ebpf-xdp.rst for
|
|
# more info.
|
|
# Recommended modes are cluster_flow on most boxes and cluster_cpu or cluster_qm on system
|
|
# with capture card using RSS (requires cpu affinity tuning and system IRQ tuning)
|
|
cluster-type: cluster_flow
|
|
# In some fragmentation cases, the hash can not be computed. If "defrag" is set
|
|
# to yes, the kernel will do the needed defragmentation before sending the packets.
|
|
defrag: yes
|
|
# To use the ring feature of AF_PACKET, set 'use-mmap' to yes
|
|
#use-mmap: yes
|
|
# Lock memory map to avoid it being swapped. Be careful that over
|
|
# subscribing could lock your system
|
|
#mmap-locked: yes
|
|
# Use tpacket_v3 capture mode, only active if use-mmap is true
|
|
# Don't use it in IPS or TAP mode as it causes severe latency
|
|
#tpacket-v3: yes
|
|
# Ring size will be computed with respect to "max-pending-packets" and number
|
|
# of threads. You can set manually the ring size in number of packets by setting
|
|
# the following value. If you are using flow "cluster-type" and have really network
|
|
# intensive single-flow you may want to set the "ring-size" independently of the number
|
|
# of threads:
|
|
#ring-size: 2048
|
|
# Block size is used by tpacket_v3 only. It should set to a value high enough to contain
|
|
# a decent number of packets. Size is in bytes so please consider your MTU. It should be
|
|
# a power of 2 and it must be multiple of page size (usually 4096).
|
|
#block-size: 32768
|
|
# tpacket_v3 block timeout: an open block is passed to userspace if it is not
|
|
# filled after block-timeout milliseconds.
|
|
#block-timeout: 10
|
|
# On busy systems, set it to yes to help recover from a packet drop
|
|
# phase. This will result in some packets (at max a ring flush) not being inspected.
|
|
#use-emergency-flush: yes
|
|
# recv buffer size, increased value could improve performance
|
|
# buffer-size: 32768
|
|
# Set to yes to disable promiscuous mode
|
|
# disable-promisc: no
|
|
# Choose checksum verification mode for the interface. At the moment
|
|
# of the capture, some packets may have an invalid checksum due to
|
|
# the checksum computation being offloaded to the network card.
|
|
# Possible values are:
|
|
# - kernel: use indication sent by kernel for each packet (default)
|
|
# - yes: checksum validation is forced
|
|
# - no: checksum validation is disabled
|
|
# - auto: Suricata uses a statistical approach to detect when
|
|
# checksum off-loading is used.
|
|
# Warning: 'capture.checksum-validation' must be set to yes to have any validation
|
|
#checksum-checks: kernel
|
|
# BPF filter to apply to this interface. The pcap filter syntax applies here.
|
|
#bpf-filter: port 80 or udp
|
|
# You can use the following variables to activate AF_PACKET tap or IPS mode.
|
|
# If copy-mode is set to ips or tap, the traffic coming to the current
|
|
# interface will be copied to the copy-iface interface. If 'tap' is set, the
|
|
# copy is complete. If 'ips' is set, the packet matching a 'drop' action
|
|
# will not be copied.
|
|
#copy-mode: ips
|
|
#copy-iface: eth1
|
|
# For eBPF and XDP setup including bypass, filter and load balancing, please
|
|
# see doc/userguide/capture-hardware/ebpf-xdp.rst for more info.
|
|
|
|
# Put default values here. These will be used for an interface that is not
|
|
# in the list above.
|
|
- interface: default
|
|
#threads: auto
|
|
#use-mmap: no
|
|
#tpacket-v3: yes
|
|
|
|
# Cross platform libpcap capture support
|
|
pcap:
|
|
- interface: eth0
|
|
# On Linux, pcap will try to use mmap'ed capture and will use "buffer-size"
|
|
# as total memory used by the ring. So set this to something bigger
|
|
# than 1% of your bandwidth.
|
|
#buffer-size: 16777216
|
|
#bpf-filter: "tcp and port 25"
|
|
# Choose checksum verification mode for the interface. At the moment
|
|
# of the capture, some packets may have an invalid checksum due to
|
|
# the checksum computation being offloaded to the network card.
|
|
# Possible values are:
|
|
# - yes: checksum validation is forced
|
|
# - no: checksum validation is disabled
|
|
# - auto: Suricata uses a statistical approach to detect when
|
|
# checksum off-loading is used. (default)
|
|
# Warning: 'capture.checksum-validation' must be set to yes to have any validation
|
|
#checksum-checks: auto
|
|
# With some accelerator cards using a modified libpcap (like Myricom), you
|
|
# may want to have the same number of capture threads as the number of capture
|
|
# rings. In this case, set up the threads variable to N to start N threads
|
|
# listening on the same interface.
|
|
#threads: 16
|
|
# set to no to disable promiscuous mode:
|
|
#promisc: no
|
|
# set snaplen, if not set it defaults to MTU if MTU can be known
|
|
# via ioctl call and to full capture if not.
|
|
#snaplen: 1518
|
|
# Put default values here
|
|
- interface: default
|
|
#checksum-checks: auto
|
|
|
|
# Settings for reading pcap files
|
|
pcap-file:
|
|
# Possible values are:
|
|
# - yes: checksum validation is forced
|
|
# - no: checksum validation is disabled
|
|
# - auto: Suricata uses a statistical approach to detect when
|
|
# checksum off-loading is used. (default)
|
|
# Warning: 'checksum-validation' must be set to yes to have checksum tested
|
|
checksum-checks: auto
|
|
|
|
# See "Advanced Capture Options" below for more options, including Netmap
|
|
# and PF_RING.
|
|
|
|
|
|
##
|
|
## Step 4: App Layer Protocol configuration
|
|
##
|
|
|
|
# Configure the app-layer parsers. The protocol's section details each
|
|
# protocol.
|
|
#
|
|
# The option "enabled" takes 3 values - "yes", "no", "detection-only".
|
|
# "yes" enables both detection and the parser, "no" disables both, and
|
|
# "detection-only" enables protocol detection only (parser disabled).
|
|
app-layer:
|
|
protocols:
|
|
rfb:
|
|
enabled: yes
|
|
detection-ports:
|
|
dp: 5900, 5901, 5902, 5903, 5904, 5905, 5906, 5907, 5908, 5909
|
|
mqtt:
|
|
enabled: yes
|
|
# max-msg-length: 1mb
|
|
# subscribe-topic-match-limit: 100
|
|
# unsubscribe-topic-match-limit: 100
|
|
krb5:
|
|
enabled: yes
|
|
snmp:
|
|
enabled: yes
|
|
ike:
|
|
enabled: yes
|
|
tls:
|
|
enabled: yes
|
|
detection-ports:
|
|
dp: 443
|
|
|
|
# Generate JA3 fingerprint from client hello. If not specified it
|
|
# will be disabled by default, but enabled if rules require it.
|
|
#ja3-fingerprints: auto
|
|
|
|
# What to do when the encrypted communications start:
|
|
# - default: keep tracking TLS session, check for protocol anomalies,
|
|
# inspect tls_* keywords. Disables inspection of unmodified
|
|
# 'content' signatures.
|
|
# - bypass: stop processing this flow as much as possible. No further
|
|
# TLS parsing and inspection. Offload flow bypass to kernel
|
|
# or hardware if possible.
|
|
# - full: keep tracking and inspection as normal. Unmodified content
|
|
# keyword signatures are inspected as well.
|
|
#
|
|
# For best performance, select 'bypass'.
|
|
#
|
|
#encryption-handling: default
|
|
|
|
dcerpc:
|
|
enabled: yes
|
|
ftp:
|
|
enabled: yes
|
|
# memcap: 64mb
|
|
rdp:
|
|
#enabled: yes
|
|
ssh:
|
|
enabled: yes
|
|
#hassh: yes
|
|
# HTTP2: Experimental HTTP 2 support. Disabled by default.
|
|
http2:
|
|
enabled: no
|
|
smtp:
|
|
enabled: yes
|
|
raw-extraction: no
|
|
# Configure SMTP-MIME Decoder
|
|
mime:
|
|
# Decode MIME messages from SMTP transactions
|
|
# (may be resource intensive)
|
|
# This field supersedes all others because it turns the entire
|
|
# process on or off
|
|
decode-mime: yes
|
|
|
|
# Decode MIME entity bodies (ie. Base64, quoted-printable, etc.)
|
|
decode-base64: yes
|
|
decode-quoted-printable: yes
|
|
|
|
# Maximum bytes per header data value stored in the data structure
|
|
# (default is 2000)
|
|
header-value-depth: 2000
|
|
|
|
# Extract URLs and save in state data structure
|
|
extract-urls: yes
|
|
# Set to yes to compute the md5 of the mail body. You will then
|
|
# be able to journalize it.
|
|
body-md5: no
|
|
# Configure inspected-tracker for file_data keyword
|
|
inspected-tracker:
|
|
content-limit: 100000
|
|
content-inspect-min-size: 32768
|
|
content-inspect-window: 4096
|
|
imap:
|
|
enabled: detection-only
|
|
smb:
|
|
enabled: yes
|
|
detection-ports:
|
|
dp: 139, 445
|
|
|
|
# Stream reassembly size for SMB streams. By default track it completely.
|
|
#stream-depth: 0
|
|
|
|
nfs:
|
|
enabled: yes
|
|
tftp:
|
|
enabled: yes
|
|
dns:
|
|
tcp:
|
|
enabled: yes
|
|
detection-ports:
|
|
dp: 53
|
|
udp:
|
|
enabled: yes
|
|
detection-ports:
|
|
dp: 53
|
|
http:
|
|
enabled: yes
|
|
# memcap: Maximum memory capacity for HTTP
|
|
# Default is unlimited, values can be 64mb, e.g.
|
|
|
|
# default-config: Used when no server-config matches
|
|
# personality: List of personalities used by default
|
|
# request-body-limit: Limit reassembly of request body for inspection
|
|
# by http_client_body & pcre /P option.
|
|
# response-body-limit: Limit reassembly of response body for inspection
|
|
# by file_data, http_server_body & pcre /Q option.
|
|
#
|
|
# For advanced options, see the user guide
|
|
|
|
|
|
# server-config: List of server configurations to use if address matches
|
|
# address: List of IP addresses or networks for this block
|
|
# personality: List of personalities used by this block
|
|
#
|
|
# Then, all the fields from default-config can be overloaded
|
|
#
|
|
# Currently Available Personalities:
|
|
# Minimal, Generic, IDS (default), IIS_4_0, IIS_5_0, IIS_5_1, IIS_6_0,
|
|
# IIS_7_0, IIS_7_5, Apache_2
|
|
libhtp:
|
|
default-config:
|
|
personality: IDS
|
|
|
|
# Can be specified in kb, mb, gb. Just a number indicates
|
|
# it's in bytes.
|
|
request-body-limit: 100kb
|
|
response-body-limit: 100kb
|
|
|
|
# inspection limits
|
|
request-body-minimal-inspect-size: 32kb
|
|
request-body-inspect-window: 4kb
|
|
response-body-minimal-inspect-size: 40kb
|
|
response-body-inspect-window: 16kb
|
|
|
|
# response body decompression (0 disables)
|
|
response-body-decompress-layer-limit: 2
|
|
|
|
# auto will use http-body-inline mode in IPS mode, yes or no set it statically
|
|
http-body-inline: auto
|
|
|
|
# Decompress SWF files.
|
|
# Two types: 'deflate', 'lzma', 'both' will decompress deflate and lzma
|
|
# compress-depth:
|
|
# Specifies the maximum amount of data to decompress,
|
|
# set 0 for unlimited.
|
|
# decompress-depth:
|
|
# Specifies the maximum amount of decompressed data to obtain,
|
|
# set 0 for unlimited.
|
|
swf-decompression:
|
|
enabled: yes
|
|
type: both
|
|
compress-depth: 100kb
|
|
decompress-depth: 100kb
|
|
|
|
# Use a random value for inspection sizes around the specified value.
|
|
# This lowers the risk of some evasion techniques but could lead
|
|
# to detection change between runs. It is set to 'yes' by default.
|
|
#randomize-inspection-sizes: yes
|
|
# If "randomize-inspection-sizes" is active, the value of various
|
|
# inspection size will be chosen from the [1 - range%, 1 + range%]
|
|
# range
|
|
# Default value of "randomize-inspection-range" is 10.
|
|
#randomize-inspection-range: 10
|
|
|
|
# decoding
|
|
double-decode-path: no
|
|
double-decode-query: no
|
|
|
|
# Can enable LZMA decompression
|
|
#lzma-enabled: false
|
|
# Memory limit usage for LZMA decompression dictionary
|
|
# Data is decompressed until dictionary reaches this size
|
|
#lzma-memlimit: 1mb
|
|
# Maximum decompressed size with a compression ratio
|
|
# above 2048 (only LZMA can reach this ratio, deflate cannot)
|
|
#compression-bomb-limit: 1mb
|
|
# Maximum time spent decompressing a single transaction in usec
|
|
#decompression-time-limit: 100000
|
|
|
|
server-config:
|
|
|
|
#- apache:
|
|
# address: [192.168.1.0/24, 127.0.0.0/8, "::1"]
|
|
# personality: Apache_2
|
|
# # Can be specified in kb, mb, gb. Just a number indicates
|
|
# # it's in bytes.
|
|
# request-body-limit: 4096
|
|
# response-body-limit: 4096
|
|
# double-decode-path: no
|
|
# double-decode-query: no
|
|
|
|
#- iis7:
|
|
# address:
|
|
# - 192.168.0.0/24
|
|
# - 192.168.10.0/24
|
|
# personality: IIS_7_0
|
|
# # Can be specified in kb, mb, gb. Just a number indicates
|
|
# # it's in bytes.
|
|
# request-body-limit: 4096
|
|
# response-body-limit: 4096
|
|
# double-decode-path: no
|
|
# double-decode-query: no
|
|
|
|
# Note: Modbus probe parser is minimalist due to the limited usage in the field.
|
|
# Only Modbus message length (greater than Modbus header length)
|
|
# and protocol ID (equal to 0) are checked in probing parser
|
|
# It is important to enable detection port and define Modbus port
|
|
# to avoid false positives
|
|
modbus:
|
|
# How many unanswered Modbus requests are considered a flood.
|
|
# If the limit is reached, the app-layer-event:modbus.flooded; will match.
|
|
#request-flood: 500
|
|
|
|
enabled: no
|
|
detection-ports:
|
|
dp: 502
|
|
# According to MODBUS Messaging on TCP/IP Implementation Guide V1.0b, it
|
|
# is recommended to keep the TCP connection opened with a remote device
|
|
# and not to open and close it for each MODBUS/TCP transaction. In that
|
|
# case, it is important to set the depth of the stream reassembling as
|
|
# unlimited (stream.reassembly.depth: 0)
|
|
|
|
# Stream reassembly size for modbus. By default track it completely.
|
|
stream-depth: 0
|
|
|
|
# DNP3
|
|
dnp3:
|
|
enabled: no
|
|
detection-ports:
|
|
dp: 20000
|
|
|
|
# SCADA EtherNet/IP and CIP protocol support
|
|
enip:
|
|
enabled: no
|
|
detection-ports:
|
|
dp: 44818
|
|
sp: 44818
|
|
|
|
ntp:
|
|
enabled: yes
|
|
|
|
dhcp:
|
|
enabled: yes
|
|
|
|
sip:
|
|
#enabled: no
|
|
|
|
# Limit for the maximum number of asn1 frames to decode (default 256)
|
|
asn1-max-frames: 256
|
|
|
|
# Datasets default settings
|
|
# datasets:
|
|
# # Default fallback memcap and hashsize values for datasets in case these
|
|
# # were not explicitly defined.
|
|
# defaults:
|
|
# memcap: 100mb
|
|
# hashsize: 2048
|
|
|
|
##############################################################################
|
|
##
|
|
## Advanced settings below
|
|
##
|
|
##############################################################################
|
|
|
|
##
|
|
## Run Options
|
|
##
|
|
|
|
# Run Suricata with a specific user-id and group-id:
|
|
#run-as:
|
|
# user: suri
|
|
# group: suri
|
|
|
|
# Some logging modules will use that name in event as identifier. The default
|
|
# value is the hostname
|
|
#sensor-name: suricata
|
|
|
|
# Default location of the pid file. The pid file is only used in
|
|
# daemon mode (start Suricata with -D). If not running in daemon mode
|
|
# the --pidfile command line option must be used to create a pid file.
|
|
#pid-file: @e_rundir@suricata.pid
|
|
|
|
# Daemon working directory
|
|
# Suricata will change directory to this one if provided
|
|
# Default: "/"
|
|
#daemon-directory: "/"
|
|
|
|
# Umask.
|
|
# Suricata will use this umask if it is provided. By default it will use the
|
|
# umask passed on by the shell.
|
|
#umask: 022
|
|
|
|
# Suricata core dump configuration. Limits the size of the core dump file to
|
|
# approximately max-dump. The actual core dump size will be a multiple of the
|
|
# page size. Core dumps that would be larger than max-dump are truncated. On
|
|
# Linux, the actual core dump size may be a few pages larger than max-dump.
|
|
# Setting max-dump to 0 disables core dumping.
|
|
# Setting max-dump to 'unlimited' will give the full core dump file.
|
|
# On 32-bit Linux, a max-dump value >= ULONG_MAX may cause the core dump size
|
|
# to be 'unlimited'.
|
|
|
|
coredump:
|
|
max-dump: unlimited
|
|
|
|
# If the Suricata box is a router for the sniffed networks, set it to 'router'. If
|
|
# it is a pure sniffing setup, set it to 'sniffer-only'.
|
|
# If set to auto, the variable is internally switched to 'router' in IPS mode
|
|
# and 'sniffer-only' in IDS mode.
|
|
# This feature is currently only used by the reject* keywords.
|
|
host-mode: auto
|
|
|
|
# Number of packets preallocated per thread. The default is 1024. A higher number
|
|
# will make sure each CPU will be more easily kept busy, but may negatively
|
|
# impact caching.
|
|
#max-pending-packets: 1024
|
|
|
|
# Runmode the engine should use. Please check --list-runmodes to get the available
|
|
# runmodes for each packet acquisition method. Default depends on selected capture
|
|
# method. 'workers' generally gives best performance.
|
|
#runmode: autofp
|
|
|
|
# Specifies the kind of flow load balancer used by the flow pinned autofp mode.
|
|
#
|
|
# Supported schedulers are:
|
|
#
|
|
# hash - Flow assigned to threads using the 5-7 tuple hash.
|
|
# ippair - Flow assigned to threads using addresses only.
|
|
#
|
|
#autofp-scheduler: hash
|
|
|
|
# Preallocated size for each packet. Default is 1514 which is the classical
|
|
# size for pcap on Ethernet. You should adjust this value to the highest
|
|
# packet size (MTU + hardware header) on your system.
|
|
#default-packet-size: 1514
|
|
|
|
# Unix command socket that can be used to pass commands to Suricata.
|
|
# An external tool can then connect to get information from Suricata
|
|
# or trigger some modifications of the engine. Set enabled to yes
|
|
# to activate the feature. In auto mode, the feature will only be
|
|
# activated in live capture mode. You can use the filename variable to set
|
|
# the file name of the socket.
|
|
unix-command:
|
|
enabled: auto
|
|
#filename: custom.socket
|
|
|
|
# Magic file. The extension .mgc is added to the value here.
|
|
#magic-file: /usr/share/file/magic
|
|
@e_magic_file_comment@magic-file: @e_magic_file@
|
|
|
|
# GeoIP2 database file. Specify path and filename of GeoIP2 database
|
|
# if using rules with "geoip" rule option.
|
|
#geoip-database: /usr/local/share/GeoLite2/GeoLite2-Country.mmdb
|
|
|
|
legacy:
|
|
uricontent: enabled
|
|
|
|
##
|
|
## Detection settings
|
|
##
|
|
|
|
# Set the order of alerts based on actions
|
|
# The default order is pass, drop, reject, alert
|
|
# action-order:
|
|
# - pass
|
|
# - drop
|
|
# - reject
|
|
# - alert
|
|
|
|
# IP Reputation
|
|
#reputation-categories-file: @e_sysconfdir@iprep/categories.txt
|
|
#default-reputation-path: @e_sysconfdir@iprep
|
|
#reputation-files:
|
|
# - reputation.list
|
|
|
|
# When run with the option --engine-analysis, the engine will read each of
|
|
# the parameters below, and print reports for each of the enabled sections
|
|
# and exit. The reports are printed to a file in the default log dir
|
|
# given by the parameter "default-log-dir", with engine reporting
|
|
# subsection below printing reports in its own report file.
|
|
engine-analysis:
|
|
# enables printing reports for fast-pattern for every rule.
|
|
rules-fast-pattern: yes
|
|
# enables printing reports for each rule
|
|
rules: yes
|
|
|
|
#recursion and match limits for PCRE where supported
|
|
pcre:
|
|
match-limit: 3500
|
|
match-limit-recursion: 1500
|
|
|
|
##
|
|
## Advanced Traffic Tracking and Reconstruction Settings
|
|
##
|
|
|
|
# Host specific policies for defragmentation and TCP stream
|
|
# reassembly. The host OS lookup is done using a radix tree, just
|
|
# like a routing table so the most specific entry matches.
|
|
host-os-policy:
|
|
# Make the default policy windows.
|
|
windows: [0.0.0.0/0]
|
|
bsd: []
|
|
bsd-right: []
|
|
old-linux: []
|
|
linux: []
|
|
old-solaris: []
|
|
solaris: []
|
|
hpux10: []
|
|
hpux11: []
|
|
irix: []
|
|
macos: []
|
|
vista: []
|
|
windows2k3: []
|
|
|
|
# Defrag settings:
|
|
|
|
defrag:
|
|
memcap: 32mb
|
|
hash-size: 65536
|
|
trackers: 65535 # number of defragmented flows to follow
|
|
max-frags: 65535 # number of fragments to keep (higher than trackers)
|
|
prealloc: yes
|
|
timeout: 60
|
|
|
|
# Enable defrag per host settings
|
|
# host-config:
|
|
#
|
|
# - dmz:
|
|
# timeout: 30
|
|
# address: [192.168.1.0/24, 127.0.0.0/8, 1.1.1.0/24, 2.2.2.0/24, "1.1.1.1", "2.2.2.2", "::1"]
|
|
#
|
|
# - lan:
|
|
# timeout: 45
|
|
# address:
|
|
# - 192.168.0.0/24
|
|
# - 192.168.10.0/24
|
|
# - 172.16.14.0/24
|
|
|
|
# Flow settings:
|
|
# By default, the reserved memory (memcap) for flows is 32MB. This is the limit
|
|
# for flow allocation inside the engine. You can change this value to allow
|
|
# more memory usage for flows.
|
|
# The hash-size determines the size of the hash used to identify flows inside
|
|
# the engine, and by default the value is 65536.
|
|
# At startup, the engine can preallocate a number of flows, to get better
|
|
# performance. The number of flows preallocated is 10000 by default.
|
|
# emergency-recovery is the percentage of flows that the engine needs to
|
|
# prune before clearing the emergency state. The emergency state is activated
|
|
# when the memcap limit is reached, allowing new flows to be created, but
|
|
# pruning them with the emergency timeouts (they are defined below).
|
|
# If the memcap is reached, the engine will try to prune flows
|
|
# with the default timeouts. If it doesn't find a flow to prune, it will set
|
|
# the emergency bit and it will try again with more aggressive timeouts.
|
|
# If that doesn't work, then it will try to kill the oldest flows using
|
|
# last time seen flows.
|
|
# The memcap can be specified in kb, mb, gb. Just a number indicates it's
|
|
# in bytes.
|
|
|
|
flow:
|
|
memcap: 128mb
|
|
hash-size: 65536
|
|
prealloc: 10000
|
|
emergency-recovery: 30
|
|
#managers: 1 # default to one flow manager
|
|
#recyclers: 1 # default to one flow recycler thread
|
|
|
|
# This option controls the use of VLAN ids in the flow (and defrag)
|
|
# hashing. Normally this should be enabled, but in some (broken)
|
|
# setups where both sides of a flow are not tagged with the same VLAN
|
|
# tag, we can ignore the VLAN id's in the flow hashing.
|
|
vlan:
|
|
use-for-tracking: true
|
|
|
|
# Specific timeouts for flows. Here you can specify the timeouts that the
|
|
# active flows will wait to transit from the current state to another, on each
|
|
# protocol. The value of "new" determines the seconds to wait after a handshake or
|
|
# stream startup before the engine frees the data of that flow it doesn't
|
|
# change the state to established (usually if we don't receive more packets
|
|
# of that flow). The value of "established" is the amount of
|
|
# seconds that the engine will wait to free the flow if that time elapses
|
|
# without receiving new packets or closing the connection. "closed" is the
|
|
# amount of time to wait after a flow is closed (usually zero). "bypassed"
|
|
# timeout controls locally bypassed flows. For these flows we don't do any other
|
|
# tracking. If no packets have been seen after this timeout, the flow is discarded.
|
|
#
|
|
# There's an emergency mode that will become active under attack circumstances,
|
|
# making the engine to check flow status faster. This configuration variables
|
|
# use the prefix "emergency-" and work similar as the normal ones.
|
|
# Some timeouts doesn't apply to all the protocols, like "closed", for udp and
|
|
# icmp.
|
|
|
|
flow-timeouts:
|
|
|
|
default:
|
|
new: 30
|
|
established: 300
|
|
closed: 0
|
|
bypassed: 100
|
|
emergency-new: 10
|
|
emergency-established: 100
|
|
emergency-closed: 0
|
|
emergency-bypassed: 50
|
|
tcp:
|
|
new: 60
|
|
established: 600
|
|
closed: 60
|
|
bypassed: 100
|
|
emergency-new: 5
|
|
emergency-established: 100
|
|
emergency-closed: 10
|
|
emergency-bypassed: 50
|
|
udp:
|
|
new: 30
|
|
established: 300
|
|
bypassed: 100
|
|
emergency-new: 10
|
|
emergency-established: 100
|
|
emergency-bypassed: 50
|
|
icmp:
|
|
new: 30
|
|
established: 300
|
|
bypassed: 100
|
|
emergency-new: 10
|
|
emergency-established: 100
|
|
emergency-bypassed: 50
|
|
|
|
# Stream engine settings. Here the TCP stream tracking and reassembly
|
|
# engine is configured.
|
|
#
|
|
# stream:
|
|
# memcap: 64mb # Can be specified in kb, mb, gb. Just a
|
|
# # number indicates it's in bytes.
|
|
# checksum-validation: yes # To validate the checksum of received
|
|
# # packet. If csum validation is specified as
|
|
# # "yes", then packets with invalid csum values will not
|
|
# # be processed by the engine stream/app layer.
|
|
# # Warning: locally generated traffic can be
|
|
# # generated without checksum due to hardware offload
|
|
# # of checksum. You can control the handling of checksum
|
|
# # on a per-interface basis via the 'checksum-checks'
|
|
# # option
|
|
# prealloc-sessions: 2k # 2k sessions prealloc'd per stream thread
|
|
# midstream: false # don't allow midstream session pickups
|
|
# async-oneside: false # don't enable async stream handling
|
|
# inline: no # stream inline mode
|
|
# drop-invalid: yes # in inline mode, drop packets that are invalid with regards to streaming engine
|
|
# max-synack-queued: 5 # Max different SYN/ACKs to queue
|
|
# bypass: no # Bypass packets when stream.reassembly.depth is reached.
|
|
# # Warning: first side to reach this triggers
|
|
# # the bypass.
|
|
#
|
|
# reassembly:
|
|
# memcap: 256mb # Can be specified in kb, mb, gb. Just a number
|
|
# # indicates it's in bytes.
|
|
# depth: 1mb # Can be specified in kb, mb, gb. Just a number
|
|
# # indicates it's in bytes.
|
|
# toserver-chunk-size: 2560 # inspect raw stream in chunks of at least
|
|
# # this size. Can be specified in kb, mb,
|
|
# # gb. Just a number indicates it's in bytes.
|
|
# toclient-chunk-size: 2560 # inspect raw stream in chunks of at least
|
|
# # this size. Can be specified in kb, mb,
|
|
# # gb. Just a number indicates it's in bytes.
|
|
# randomize-chunk-size: yes # Take a random value for chunk size around the specified value.
|
|
# # This lowers the risk of some evasion techniques but could lead
|
|
# # to detection change between runs. It is set to 'yes' by default.
|
|
# randomize-chunk-range: 10 # If randomize-chunk-size is active, the value of chunk-size is
|
|
# # a random value between (1 - randomize-chunk-range/100)*toserver-chunk-size
|
|
# # and (1 + randomize-chunk-range/100)*toserver-chunk-size and the same
|
|
# # calculation for toclient-chunk-size.
|
|
# # Default value of randomize-chunk-range is 10.
|
|
#
|
|
# raw: yes # 'Raw' reassembly enabled or disabled.
|
|
# # raw is for content inspection by detection
|
|
# # engine.
|
|
#
|
|
# segment-prealloc: 2048 # number of segments preallocated per thread
|
|
#
|
|
# check-overlap-different-data: true|false
|
|
# # check if a segment contains different data
|
|
# # than what we've already seen for that
|
|
# # position in the stream.
|
|
# # This is enabled automatically if inline mode
|
|
# # is used or when stream-event:reassembly_overlap_different_data;
|
|
# # is used in a rule.
|
|
#
|
|
stream:
|
|
memcap: 64mb
|
|
checksum-validation: yes # reject incorrect csums
|
|
inline: auto # auto will use inline mode in IPS mode, yes or no set it statically
|
|
reassembly:
|
|
memcap: 256mb
|
|
depth: 1mb # reassemble 1mb into a stream
|
|
toserver-chunk-size: 2560
|
|
toclient-chunk-size: 2560
|
|
randomize-chunk-size: yes
|
|
#randomize-chunk-range: 10
|
|
#raw: yes
|
|
#segment-prealloc: 2048
|
|
#check-overlap-different-data: true
|
|
|
|
# Host table:
|
|
#
|
|
# Host table is used by the tagging and per host thresholding subsystems.
|
|
#
|
|
host:
|
|
hash-size: 4096
|
|
prealloc: 1000
|
|
memcap: 32mb
|
|
|
|
# IP Pair table:
|
|
#
|
|
# Used by xbits 'ippair' tracking.
|
|
#
|
|
#ippair:
|
|
# hash-size: 4096
|
|
# prealloc: 1000
|
|
# memcap: 32mb
|
|
|
|
# Decoder settings
|
|
|
|
decoder:
|
|
# Teredo decoder is known to not be completely accurate
|
|
# as it will sometimes detect non-teredo as teredo.
|
|
teredo:
|
|
enabled: true
|
|
# ports to look for Teredo. Max 4 ports. If no ports are given, or
|
|
# the value is set to 'any', Teredo detection runs on _all_ UDP packets.
|
|
ports: $TEREDO_PORTS # syntax: '[3544, 1234]' or '3533' or 'any'.
|
|
|
|
# VXLAN decoder is assigned to up to 4 UDP ports. By default only the
|
|
# IANA assigned port 4789 is enabled.
|
|
vxlan:
|
|
enabled: true
|
|
ports: $VXLAN_PORTS # syntax: '[8472, 4789]' or '4789'.
|
|
|
|
# Geneve decoder is assigned to up to 4 UDP ports. By default only the
|
|
# IANA assigned port 6081 is enabled.
|
|
geneve:
|
|
enabled: true
|
|
ports: $GENEVE_PORTS # syntax: '[6081, 1234]' or '6081'.
|
|
|
|
# maximum number of decoder layers for a packet
|
|
# max-layers: 16
|
|
|
|
##
|
|
## Performance tuning and profiling
|
|
##
|
|
|
|
# The detection engine builds internal groups of signatures. The engine
|
|
# allows us to specify the profile to use for them, to manage memory in an
|
|
# efficient way keeping good performance. For the profile keyword you
|
|
# can use the words "low", "medium", "high" or "custom". If you use custom,
|
|
# make sure to define the values in the "custom-values" section.
|
|
# Usually you would prefer medium/high/low.
|
|
#
|
|
# "sgh mpm-context", indicates how the staging should allot mpm contexts for
|
|
# the signature groups. "single" indicates the use of a single context for
|
|
# all the signature group heads. "full" indicates a mpm-context for each
|
|
# group head. "auto" lets the engine decide the distribution of contexts
|
|
# based on the information the engine gathers on the patterns from each
|
|
# group head.
|
|
#
|
|
# The option inspection-recursion-limit is used to limit the recursive calls
|
|
# in the content inspection code. For certain payload-sig combinations, we
|
|
# might end up taking too much time in the content inspection code.
|
|
# If the argument specified is 0, the engine uses an internally defined
|
|
# default limit. When a value is not specified, there are no limits on the recursion.
|
|
detect:
|
|
profile: medium
|
|
custom-values:
|
|
toclient-groups: 3
|
|
toserver-groups: 25
|
|
sgh-mpm-context: auto
|
|
inspection-recursion-limit: 3000
|
|
# If set to yes, the loading of signatures will be made after the capture
|
|
# is started. This will limit the downtime in IPS mode.
|
|
#delayed-detect: yes
|
|
|
|
prefilter:
|
|
# default prefiltering setting. "mpm" only creates MPM/fast_pattern
|
|
# engines. "auto" also sets up prefilter engines for other keywords.
|
|
# Use --list-keywords=all to see which keywords support prefiltering.
|
|
default: mpm
|
|
|
|
# the grouping values above control how many groups are created per
|
|
# direction. Port whitelisting forces that port to get its own group.
|
|
# Very common ports will benefit, as well as ports with many expensive
|
|
# rules.
|
|
grouping:
|
|
#tcp-whitelist: 53, 80, 139, 443, 445, 1433, 3306, 3389, 6666, 6667, 8080
|
|
#udp-whitelist: 53, 135, 5060
|
|
|
|
profiling:
|
|
# Log the rules that made it past the prefilter stage, per packet
|
|
# default is off. The threshold setting determines how many rules
|
|
# must have made it past pre-filter for that rule to trigger the
|
|
# logging.
|
|
#inspect-logging-threshold: 200
|
|
grouping:
|
|
dump-to-disk: false
|
|
include-rules: false # very verbose
|
|
include-mpm-stats: false
|
|
|
|
# Select the multi pattern algorithm you want to run for scan/search the
|
|
# in the engine.
|
|
#
|
|
# The supported algorithms are:
|
|
# "ac" - Aho-Corasick, default implementation
|
|
# "ac-bs" - Aho-Corasick, reduced memory implementation
|
|
# "ac-ks" - Aho-Corasick, "Ken Steele" variant
|
|
# "hs" - Hyperscan, available when built with Hyperscan support
|
|
#
|
|
# The default mpm-algo value of "auto" will use "hs" if Hyperscan is
|
|
# available, "ac" otherwise.
|
|
#
|
|
# The mpm you choose also decides the distribution of mpm contexts for
|
|
# signature groups, specified by the conf - "detect.sgh-mpm-context".
|
|
# Selecting "ac" as the mpm would require "detect.sgh-mpm-context"
|
|
# to be set to "single", because of ac's memory requirements, unless the
|
|
# ruleset is small enough to fit in memory, in which case one can
|
|
# use "full" with "ac". The rest of the mpms can be run in "full" mode.
|
|
|
|
mpm-algo: auto
|
|
|
|
# Select the matching algorithm you want to use for single-pattern searches.
|
|
#
|
|
# Supported algorithms are "bm" (Boyer-Moore) and "hs" (Hyperscan, only
|
|
# available if Suricata has been built with Hyperscan support).
|
|
#
|
|
# The default of "auto" will use "hs" if available, otherwise "bm".
|
|
|
|
spm-algo: auto
|
|
|
|
# Suricata is multi-threaded. Here the threading can be influenced.
|
|
threading:
|
|
set-cpu-affinity: no
|
|
# Tune cpu affinity of threads. Each family of threads can be bound
|
|
# to specific CPUs.
|
|
#
|
|
# These 2 apply to the all runmodes:
|
|
# management-cpu-set is used for flow timeout handling, counters
|
|
# worker-cpu-set is used for 'worker' threads
|
|
#
|
|
# Additionally, for autofp these apply:
|
|
# receive-cpu-set is used for capture threads
|
|
# verdict-cpu-set is used for IPS verdict threads
|
|
#
|
|
cpu-affinity:
|
|
- management-cpu-set:
|
|
cpu: [ 0 ] # include only these CPUs in affinity settings
|
|
- receive-cpu-set:
|
|
cpu: [ 0 ] # include only these CPUs in affinity settings
|
|
- worker-cpu-set:
|
|
cpu: [ "all" ]
|
|
mode: "exclusive"
|
|
# Use explicitly 3 threads and don't compute number by using
|
|
# detect-thread-ratio variable:
|
|
# threads: 3
|
|
prio:
|
|
low: [ 0 ]
|
|
medium: [ "1-2" ]
|
|
high: [ 3 ]
|
|
default: "medium"
|
|
#- verdict-cpu-set:
|
|
# cpu: [ 0 ]
|
|
# prio:
|
|
# default: "high"
|
|
#
|
|
# By default Suricata creates one "detect" thread per available CPU/CPU core.
|
|
# This setting allows controlling this behaviour. A ratio setting of 2 will
|
|
# create 2 detect threads for each CPU/CPU core. So for a dual core CPU this
|
|
# will result in 4 detect threads. If values below 1 are used, less threads
|
|
# are created. So on a dual core CPU a setting of 0.5 results in 1 detect
|
|
# thread being created. Regardless of the setting at a minimum 1 detect
|
|
# thread will always be created.
|
|
#
|
|
detect-thread-ratio: 1.0
|
|
|
|
# Luajit has a strange memory requirement, its 'states' need to be in the
|
|
# first 2G of the process' memory.
|
|
#
|
|
# 'luajit.states' is used to control how many states are preallocated.
|
|
# State use: per detect script: 1 per detect thread. Per output script: 1 per
|
|
# script.
|
|
luajit:
|
|
states: 128
|
|
|
|
# Profiling settings. Only effective if Suricata has been built with
|
|
# the --enable-profiling configure flag.
|
|
#
|
|
profiling:
|
|
# Run profiling for every X-th packet. The default is 1, which means we
|
|
# profile every packet. If set to 1000, one packet is profiled for every
|
|
# 1000 received.
|
|
#sample-rate: 1000
|
|
|
|
# rule profiling
|
|
rules:
|
|
|
|
# Profiling can be disabled here, but it will still have a
|
|
# performance impact if compiled in.
|
|
enabled: yes
|
|
filename: rule_perf.log
|
|
append: yes
|
|
|
|
# Sort options: ticks, avgticks, checks, matches, maxticks
|
|
# If commented out all the sort options will be used.
|
|
#sort: avgticks
|
|
|
|
# Limit the number of sids for which stats are shown at exit (per sort).
|
|
limit: 10
|
|
|
|
# output to json
|
|
json: @e_enable_evelog@
|
|
|
|
# per keyword profiling
|
|
keywords:
|
|
enabled: yes
|
|
filename: keyword_perf.log
|
|
append: yes
|
|
|
|
prefilter:
|
|
enabled: yes
|
|
filename: prefilter_perf.log
|
|
append: yes
|
|
|
|
# per rulegroup profiling
|
|
rulegroups:
|
|
enabled: yes
|
|
filename: rule_group_perf.log
|
|
append: yes
|
|
|
|
# packet profiling
|
|
packets:
|
|
|
|
# Profiling can be disabled here, but it will still have a
|
|
# performance impact if compiled in.
|
|
enabled: yes
|
|
filename: packet_stats.log
|
|
append: yes
|
|
|
|
# per packet csv output
|
|
csv:
|
|
|
|
# Output can be disabled here, but it will still have a
|
|
# performance impact if compiled in.
|
|
enabled: no
|
|
filename: packet_stats.csv
|
|
|
|
# profiling of locking. Only available when Suricata was built with
|
|
# --enable-profiling-locks.
|
|
locks:
|
|
enabled: no
|
|
filename: lock_stats.log
|
|
append: yes
|
|
|
|
pcap-log:
|
|
enabled: no
|
|
filename: pcaplog_stats.log
|
|
append: yes
|
|
|
|
##
|
|
## Netfilter integration
|
|
##
|
|
|
|
# When running in NFQ inline mode, it is possible to use a simulated
|
|
# non-terminal NFQUEUE verdict.
|
|
# This permits sending all needed packet to Suricata via this rule:
|
|
# iptables -I FORWARD -m mark ! --mark $MARK/$MASK -j NFQUEUE
|
|
# And below, you can have your standard filtering ruleset. To activate
|
|
# this mode, you need to set mode to 'repeat'
|
|
# If you want a packet to be sent to another queue after an ACCEPT decision
|
|
# set the mode to 'route' and set next-queue value.
|
|
# On Linux >= 3.1, you can set batchcount to a value > 1 to improve performance
|
|
# by processing several packets before sending a verdict (worker runmode only).
|
|
# On Linux >= 3.6, you can set the fail-open option to yes to have the kernel
|
|
# accept the packet if Suricata is not able to keep pace.
|
|
# bypass mark and mask can be used to implement NFQ bypass. If bypass mark is
|
|
# set then the NFQ bypass is activated. Suricata will set the bypass mark/mask
|
|
# on packet of a flow that need to be bypassed. The Nefilter ruleset has to
|
|
# directly accept all packets of a flow once a packet has been marked.
|
|
nfq:
|
|
# mode: accept
|
|
# repeat-mark: 1
|
|
# repeat-mask: 1
|
|
# bypass-mark: 1
|
|
# bypass-mask: 1
|
|
# route-queue: 2
|
|
# batchcount: 20
|
|
# fail-open: yes
|
|
|
|
#nflog support
|
|
nflog:
|
|
# netlink multicast group
|
|
# (the same as the iptables --nflog-group param)
|
|
# Group 0 is used by the kernel, so you can't use it
|
|
- group: 2
|
|
# netlink buffer size
|
|
buffer-size: 18432
|
|
# put default value here
|
|
- group: default
|
|
# set number of packets to queue inside kernel
|
|
qthreshold: 1
|
|
# set the delay before flushing packet in the kernel's queue
|
|
qtimeout: 100
|
|
# netlink max buffer size
|
|
max-size: 20000
|
|
|
|
##
|
|
## Advanced Capture Options
|
|
##
|
|
|
|
# General settings affecting packet capture
|
|
capture:
|
|
# disable NIC offloading. It's restored when Suricata exits.
|
|
# Enabled by default.
|
|
#disable-offloading: false
|
|
#
|
|
# disable checksum validation. Same as setting '-k none' on the
|
|
# commandline.
|
|
#checksum-validation: none
|
|
|
|
# Netmap support
|
|
#
|
|
# Netmap operates with NIC directly in driver, so you need FreeBSD 11+ which has
|
|
# built-in Netmap support or compile and install the Netmap module and appropriate
|
|
# NIC driver for your Linux system.
|
|
# To reach maximum throughput disable all receive-, segmentation-,
|
|
# checksum- offloading on your NIC (using ethtool or similar).
|
|
# Disabling TX checksum offloading is *required* for connecting OS endpoint
|
|
# with NIC endpoint.
|
|
# You can find more information at https://github.com/luigirizzo/netmap
|
|
#
|
|
netmap:
|
|
# To specify OS endpoint add plus sign at the end (e.g. "eth0+")
|
|
- interface: eth2
|
|
# Number of capture threads. "auto" uses number of RSS queues on interface.
|
|
# Warning: unless the RSS hashing is symmetrical, this will lead to
|
|
# accuracy issues.
|
|
#threads: auto
|
|
# You can use the following variables to activate netmap tap or IPS mode.
|
|
# If copy-mode is set to ips or tap, the traffic coming to the current
|
|
# interface will be copied to the copy-iface interface. If 'tap' is set, the
|
|
# copy is complete. If 'ips' is set, the packet matching a 'drop' action
|
|
# will not be copied.
|
|
# To specify the OS as the copy-iface (so the OS can route packets, or forward
|
|
# to a service running on the same machine) add a plus sign at the end
|
|
# (e.g. "copy-iface: eth0+"). Don't forget to set up a symmetrical eth0+ -> eth0
|
|
# for return packets. Hardware checksumming must be *off* on the interface if
|
|
# using an OS endpoint (e.g. 'ifconfig eth0 -rxcsum -txcsum -rxcsum6 -txcsum6' for FreeBSD
|
|
# or 'ethtool -K eth0 tx off rx off' for Linux).
|
|
#copy-mode: tap
|
|
#copy-iface: eth3
|
|
# Set to yes to disable promiscuous mode
|
|
# disable-promisc: no
|
|
# Choose checksum verification mode for the interface. At the moment
|
|
# of the capture, some packets may have an invalid checksum due to
|
|
# the checksum computation being offloaded to the network card.
|
|
# Possible values are:
|
|
# - yes: checksum validation is forced
|
|
# - no: checksum validation is disabled
|
|
# - auto: Suricata uses a statistical approach to detect when
|
|
# checksum off-loading is used.
|
|
# Warning: 'checksum-validation' must be set to yes to have any validation
|
|
#checksum-checks: auto
|
|
# BPF filter to apply to this interface. The pcap filter syntax apply here.
|
|
#bpf-filter: port 80 or udp
|
|
#- interface: eth3
|
|
#threads: auto
|
|
#copy-mode: tap
|
|
#copy-iface: eth2
|
|
# Put default values here
|
|
- interface: default
|
|
|
|
# PF_RING configuration: for use with native PF_RING support
|
|
# for more info see http://www.ntop.org/products/pf_ring/
|
|
pfring:
|
|
- interface: eth0
|
|
# Number of receive threads. If set to 'auto' Suricata will first try
|
|
# to use CPU (core) count and otherwise RSS queue count.
|
|
threads: auto
|
|
|
|
# Default clusterid. PF_RING will load balance packets based on flow.
|
|
# All threads/processes that will participate need to have the same
|
|
# clusterid.
|
|
cluster-id: 99
|
|
|
|
# Default PF_RING cluster type. PF_RING can load balance per flow.
|
|
# Possible values are cluster_flow or cluster_round_robin.
|
|
cluster-type: cluster_flow
|
|
|
|
# bpf filter for this interface
|
|
#bpf-filter: tcp
|
|
|
|
# If bypass is set then the PF_RING hw bypass is activated, when supported
|
|
# by the network interface. Suricata will instruct the interface to bypass
|
|
# all future packets for a flow that need to be bypassed.
|
|
#bypass: yes
|
|
|
|
# Choose checksum verification mode for the interface. At the moment
|
|
# of the capture, some packets may have an invalid checksum due to
|
|
# the checksum computation being offloaded to the network card.
|
|
# Possible values are:
|
|
# - rxonly: only compute checksum for packets received by network card.
|
|
# - yes: checksum validation is forced
|
|
# - no: checksum validation is disabled
|
|
# - auto: Suricata uses a statistical approach to detect when
|
|
# checksum off-loading is used. (default)
|
|
# Warning: 'checksum-validation' must be set to yes to have any validation
|
|
#checksum-checks: auto
|
|
# Second interface
|
|
#- interface: eth1
|
|
# threads: 3
|
|
# cluster-id: 93
|
|
# cluster-type: cluster_flow
|
|
# Put default values here
|
|
- interface: default
|
|
#threads: 2
|
|
|
|
# For FreeBSD ipfw(8) divert(4) support.
|
|
# Please make sure you have ipfw_load="YES" and ipdivert_load="YES"
|
|
# in /etc/loader.conf or kldload'ing the appropriate kernel modules.
|
|
# Additionally, you need to have an ipfw rule for the engine to see
|
|
# the packets from ipfw. For Example:
|
|
#
|
|
# ipfw add 100 divert 8000 ip from any to any
|
|
#
|
|
# N.B. This example uses "8000" -- this number must mach the values
|
|
# you passed on the command line, i.e., -d 8000
|
|
#
|
|
ipfw:
|
|
|
|
# Reinject packets at the specified ipfw rule number. This config
|
|
# option is the ipfw rule number AT WHICH rule processing continues
|
|
# in the ipfw processing system after the engine has finished
|
|
# inspecting the packet for acceptance. If no rule number is specified,
|
|
# accepted packets are reinjected at the divert rule which they entered
|
|
# and IPFW rule processing continues. No check is done to verify
|
|
# this will rule makes sense so care must be taken to avoid loops in ipfw.
|
|
#
|
|
## The following example tells the engine to reinject packets
|
|
# back into the ipfw firewall AT rule number 5500:
|
|
#
|
|
# ipfw-reinjection-rule-number: 5500
|
|
|
|
|
|
napatech:
|
|
# When use_all_streams is set to "yes" the initialization code will query
|
|
# the Napatech service for all configured streams and listen on all of them.
|
|
# When set to "no" the streams config array will be used.
|
|
#
|
|
# This option necessitates running the appropriate NTPL commands to create
|
|
# the desired streams prior to running Suricata.
|
|
#use-all-streams: no
|
|
|
|
# The streams to listen on when auto-config is disabled or when and threading
|
|
# cpu-affinity is disabled. This can be either:
|
|
# an individual stream (e.g. streams: [0])
|
|
# or
|
|
# a range of streams (e.g. streams: ["0-3"])
|
|
#
|
|
streams: ["0-3"]
|
|
|
|
# Stream stats can be enabled to provide fine grain packet and byte counters
|
|
# for each thread/stream that is configured.
|
|
#
|
|
enable-stream-stats: no
|
|
|
|
# When auto-config is enabled the streams will be created and assigned
|
|
# automatically to the NUMA node where the thread resides. If cpu-affinity
|
|
# is enabled in the threading section. Then the streams will be created
|
|
# according to the number of worker threads specified in the worker-cpu-set.
|
|
# Otherwise, the streams array is used to define the streams.
|
|
#
|
|
# This option is intended primarily to support legacy configurations.
|
|
#
|
|
# This option cannot be used simultaneously with either "use-all-streams"
|
|
# or "hardware-bypass".
|
|
#
|
|
auto-config: yes
|
|
|
|
# Enable hardware level flow bypass.
|
|
#
|
|
hardware-bypass: yes
|
|
|
|
# Enable inline operation. When enabled traffic arriving on a given port is
|
|
# automatically forwarded out its peer port after analysis by Suricata.
|
|
#
|
|
inline: no
|
|
|
|
# Ports indicates which Napatech ports are to be used in auto-config mode.
|
|
# these are the port IDs of the ports that will be merged prior to the
|
|
# traffic being distributed to the streams.
|
|
#
|
|
# When hardware-bypass is enabled the ports must be configured as a segment.
|
|
# specify the port(s) on which upstream and downstream traffic will arrive.
|
|
# This information is necessary for the hardware to properly process flows.
|
|
#
|
|
# When using a tap configuration one of the ports will receive inbound traffic
|
|
# for the network and the other will receive outbound traffic. The two ports on a
|
|
# given segment must reside on the same network adapter.
|
|
#
|
|
# When using a SPAN-port configuration the upstream and downstream traffic
|
|
# arrives on a single port. This is configured by setting the two sides of the
|
|
# segment to reference the same port. (e.g. 0-0 to configure a SPAN port on
|
|
# port 0).
|
|
#
|
|
# port segments are specified in the form:
|
|
# ports: [0-1,2-3,4-5,6-6,7-7]
|
|
#
|
|
# For legacy systems when hardware-bypass is disabled this can be specified in any
|
|
# of the following ways:
|
|
#
|
|
# a list of individual ports (e.g. ports: [0,1,2,3])
|
|
#
|
|
# a range of ports (e.g. ports: [0-3])
|
|
#
|
|
# "all" to indicate that all ports are to be merged together
|
|
# (e.g. ports: [all])
|
|
#
|
|
# This parameter has no effect if auto-config is disabled.
|
|
#
|
|
ports: [0-1,2-3]
|
|
|
|
# When auto-config is enabled the hashmode specifies the algorithm for
|
|
# determining to which stream a given packet is to be delivered.
|
|
# This can be any valid Napatech NTPL hashmode command.
|
|
#
|
|
# The most common hashmode commands are: hash2tuple, hash2tuplesorted,
|
|
# hash5tuple, hash5tuplesorted and roundrobin.
|
|
#
|
|
# See Napatech NTPL documentation other hashmodes and details on their use.
|
|
#
|
|
# This parameter has no effect if auto-config is disabled.
|
|
#
|
|
hashmode: hash5tuplesorted
|
|
|
|
##
|
|
## Configure Suricata to load Suricata-Update managed rules.
|
|
##
|
|
|
|
default-rule-path: @e_defaultruledir@
|
|
|
|
rule-files:
|
|
- suricata.rules
|
|
|
|
##
|
|
## Auxiliary configuration files.
|
|
##
|
|
|
|
classification-file: @e_sysconfdir@classification.config
|
|
reference-config-file: @e_sysconfdir@reference.config
|
|
# threshold-file: @e_sysconfdir@threshold.config
|
|
|
|
##
|
|
## Include other configs
|
|
##
|
|
|
|
# Includes: Files included here will be handled as if they were in-lined
|
|
# in this configuration file. Files with relative pathnames will be
|
|
# searched for in the same directory as this configuration file. You may
|
|
# use absolute pathnames too.
|
|
# You can specify more than 2 configuration files, if needed.
|
|
#include: include1.yaml
|
|
#include: include2.yaml
|