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%YAML 1.1
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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: "any"
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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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VXLAN_PORTS: 4789
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##
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## Step 2: select outputs to enable
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##
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default-log-dir: /var/log/suricata/
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# global stats configuration
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stats:
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enabled: yes
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interval: 15
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decoder-events: true
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decoder-events-prefix: "decoder.event"
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stream-events: true
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# Configure the type of alert (and other) logging you would like.
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outputs:
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- fast:
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enabled: no
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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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filetype: regular #regular|syslog|unix_dgram|unix_stream|redis
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filename: eve.json
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#filename: eve-%Y-%m-%d-%H:%M.json
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#rotate-interval: day
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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-teletalk"
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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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#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 as to be reserved to high traffic suricata.
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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 entry 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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# a records a predictable flow id that can be used to match records to
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# output of other tools such as 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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# http-body: yes # enable dumping of http body in Base64
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# http-body-printable: yes # enable dumping of http body in printable format
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# metadata: no # enable inclusion of app layer metadata with alert. Default yes
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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 as truncated packets, packets with invalid
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# IP/UDP/TCP length values, and other events that render the packet invalid for further processing
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# or describe unexpected behavior on an established stream. Networks which experience high
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# occurrences of anomalies may experience packet processing degradation.
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# Enable dumping of packet header
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# packethdr: no # enable dumping of packet header
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- http:
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extended: no # 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 among {both, request, response} to dump all
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# http headers for every http request and/or response
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# dump-all-headers: [both, request, response]
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- dns:
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version: 2
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# Enable/disable this logger. Default: enabled.
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enabled: no
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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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# Answer types to log.
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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: no # 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 allows to control which tls fields that are included
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# 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: no # log alerts that caused drops
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flows: start # start or all: 'start' logs only a single drop
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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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#- nfs
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#- smb
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#- tftp
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#- ikev2
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#- krb5
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#- snmp
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- dhcp:
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enabled: no
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extended: no
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- ssh
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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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# alert output for use with Barnyard2
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- unified2-alert:
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enabled: no
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filename: unified2.alert
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#limit: 32mb
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#nostamp: no
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#sensor-id: 0
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#payload: yes
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xff:
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enabled: no
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mode: extra-data
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deployment: reverse
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header: X-Forwarded-For
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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 # enabled 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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- pcap-log:
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enabled: no
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filename: log.pcap
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limit: 1000mb
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max-files: 2000
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compression: none
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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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#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 stopped being logged.
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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: 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
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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 ommited 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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# a line based information for dropped packets in IPS mode
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- drop:
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enabled: no
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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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- file-store:
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version: 2
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enabled: no
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#dir: filestore
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#write-fileinfo: yes
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#force-filestore: yes
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#stream-depth: 0
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#max-open-files: 1000
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#force-hash: [sha1, md5]
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xff:
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enabled: no
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mode: extra-data
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deployment: reverse
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header: X-Forwarded-For
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- file-store:
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enabled: no # set to yes to enable
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log-dir: files # directory to store the files
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force-magic: no # force logging magic on all stored 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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force-filestore: no # force storing of all files
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# override global stream-depth for sessions in which we want to
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# perform file extraction. Set to 0 for unlimited.
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#stream-depth: 0
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#waldo: file.waldo # waldo file to store the file_id across runs
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# uncomment to disable meta file writing
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#write-meta: no
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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
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#max-open-files: 1000
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include-pid: no # set to yes to include pid in file names
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# Log TCP data after stream normalization
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- tcp-data:
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enabled: no
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type: file
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filename: tcp-data.log
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# Log HTTP body data after normalization, dechunking and unzipping.
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- http-body-data:
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enabled: no
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type: file
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filename: http-data.log
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# Lua Output Support - execute lua script to generate alert and event
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- lua:
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enabled: no
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#scripts-dir: /etc/suricata/lua-output/
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scripts:
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# - script1.lua
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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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default-log-level: notice
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# The default output format. Optional parameter, should default to
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# something reasonable if not provided. Can be overridden in an
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# output section. You can leave this out to get the default.
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#
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# This value is overridden by the SC_LOG_FORMAT env var.
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#default-log-format: "[%i] %t - (%f:%l) <%d> (%n) -- "
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# A regex to filter output. Can be overridden in an output section.
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# Defaults to empty (no filter).
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#
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# This value is overridden by the SC_LOG_OP_FILTER env var.
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default-output-filter:
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# Define your logging outputs. If none are defined, or they are all
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# disabled you will get the default - console output.
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outputs:
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- console:
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enabled: yes
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# type: json
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- file:
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enabled: yes
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level: info
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filename: suricata.log
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# type: json
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- syslog:
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enabled: no
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facility: local5
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format: "[%i] <%d> -- "
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# type: json
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##
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## Step 4: configure common capture settings
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##
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# Linux high speed capture support
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af-packet:
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- interface: ens2f0
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threads: 20
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cluster-id: 98
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#cluster-type: cluster_flow
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cluster-type: cluster_qm
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xdp-mode: driver
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xdp-filter-file: /etc/suricata/ebpf/xdp_filter.bpf
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bypass: yes
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defrag: yes
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use-mmap: yes
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#mmap-locked: yes
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ring-size: 1400000
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buffer: 53687091200
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rollover: no
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use-emergency-flush: yes
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#disable-promisc: no
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#checksum-checks: kernel
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copy-mode: ips
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copy-iface: ens2f1
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- interface: ens2f1
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threads: 20
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cluster-id: 97
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#cluster-type: cluster_flow
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cluster-type: cluster_qm
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xdp-mode: driver
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xdp-filter-file: /etc/suricata/ebpf/xdp_filter.bpf
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bypass: yes
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defrag: yes
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use-mmap: yes
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#mmap-locked: yes
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ring-size: 1400000
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buffer: 53687091200
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rollover: no
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use-emergency-flush: yes
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#disable-promisc: no
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#checksum-checks: kernel
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copy-mode: ips
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copy-iface: ens2f0
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# Cross platform libpcap capture support
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pcap:
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#- interface: eth0
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#buffer-size: 16777216
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#bpf-filter: "tcp and port 25"
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#checksum-checks: auto
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#threads: 18
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#promisc: no
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#snaplen: 1518
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# Put default values here
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#- interface: default
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#checksum-checks: auto
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# Settings for reading pcap files
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#pcap-file:
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#checksum-checks: auto
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##
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## Step 5: App Layer Protocol Configuration
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##
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|
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app-layer:
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protocols:
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krb5:
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enabled: no
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snmp:
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enabled: no
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ikev2:
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enabled: no
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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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encryption-handling: bypass
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# Generate JA3 fingerprint from client hello
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ja3-fingerprints: no
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# What to do when the encrypted communications start:
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# - default: keep tracking TLS session, check for protocol anomalies,
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# inspect tls_* keywords. Disables inspection of unmodified
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# 'content' signatures.
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# - bypass: stop processing this flow as much as possible. No further
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# TLS parsing and inspection. Offload flow bypass to kernel
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# or hardware if possible.
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# - full: keep tracking and inspection as normal. Unmodified content
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# keyword signatures are inspected as well.
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#
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# For best performance, select 'bypass'.
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#
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#encryption-handling: default
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|
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dcerpc:
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enabled: no
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ftp:
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enabled: no
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# memcap: 64mb
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ssh:
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enabled: yes
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smtp:
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|
enabled: yes
|
|
raw-extraction: no
|
|
# Configure SMTP-MIME Decoder
|
|
mime:
|
|
# Decode MIME messages from SMTP transactions
|
|
# (may be resource intensive)
|
|
# This field supercedes 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
|
|
msn:
|
|
enabled: detection-only
|
|
smb:
|
|
enabled: no
|
|
detection-ports:
|
|
dp: 139, 445
|
|
|
|
# Stream reassembly size for SMB streams. By default track it completely.
|
|
#stream-depth: 0
|
|
|
|
nfs:
|
|
enabled: no
|
|
tftp:
|
|
enabled: no
|
|
dns:
|
|
# memcaps. Globally and per flow/state.
|
|
#global-memcap: 16mb
|
|
#state-memcap: 512kb
|
|
|
|
# How many unreplied DNS requests are considered a flood.
|
|
# If the limit is reached, app-layer-event:dns.flooded; will match.
|
|
#request-flood: 500
|
|
|
|
tcp:
|
|
enabled: no
|
|
detection-ports:
|
|
dp: 53
|
|
udp:
|
|
enabled: no
|
|
detection-ports:
|
|
dp: 53
|
|
http:
|
|
enabled: yes
|
|
memcap: 20gb
|
|
|
|
# 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.
|
|
# double-decode-path: Double decode path section of the URI
|
|
# double-decode-query: Double decode query section of the URI
|
|
# response-body-decompress-layer-limit:
|
|
# Limit to how many layers of compression will be
|
|
# decompressed. Defaults to 2.
|
|
#
|
|
# server-config: List of server configurations to use if address matches
|
|
# address: List of IP addresses or networks for this block
|
|
# personalitiy: List of personalities used by this block
|
|
# 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.
|
|
# double-decode-path: Double decode path section of the URI
|
|
# double-decode-query: Double decode query section of the URI
|
|
#
|
|
# uri-include-all: Include all parts of the URI. By default the
|
|
# 'scheme', username/password, hostname and port
|
|
# are excluded. Setting this option to true adds
|
|
# all of them to the normalized uri as inspected
|
|
# by http_uri, urilen, pcre with /U and the other
|
|
# keywords that inspect the normalized uri.
|
|
# Note that this does not affect http_raw_uri.
|
|
# Also, note that including all was the default in
|
|
# 1.4 and 2.0beta1.
|
|
#
|
|
# meta-field-limit: Hard size limit for request and response size
|
|
# limits. Applies to request line and headers,
|
|
# response line and headers. Does not apply to
|
|
# request or response bodies. Default is 18k.
|
|
# If this limit is reached an event is raised.
|
|
#
|
|
# 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.
|
|
# 2 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: 0
|
|
decompress-depth: 0
|
|
|
|
# Take a random value for inspection sizes around the specified value.
|
|
# This lower the risk of some evasion technics but could lead
|
|
# 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 choosen in 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
|
|
|
|
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 poor significant 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 positive
|
|
modbus:
|
|
#request-flood: 500
|
|
enabled: no
|
|
detection-ports:
|
|
dp: 502
|
|
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
|
|
|
|
# Limit for the maximum number of asn1 frames to decode (default 256)
|
|
asn1-max-frames: 256
|
|
|
|
|
|
##############################################################################
|
|
##
|
|
## Advanced settings below
|
|
##
|
|
##############################################################################
|
|
|
|
##
|
|
## Run Options
|
|
##
|
|
|
|
#sensor-name: suricata
|
|
|
|
pid-file: /var/run/suricata.pid
|
|
|
|
coredump:
|
|
max-dump: unlimited
|
|
|
|
host-mode: auto
|
|
|
|
max-pending-packets: 1024
|
|
|
|
runmode: workers
|
|
|
|
#autofp-scheduler: active-packets
|
|
|
|
default-packet-size: 1514
|
|
|
|
unix-command:
|
|
enabled: auto
|
|
#filename: custom.socket
|
|
|
|
# Magic file. The extension .mgc is added to the value here.
|
|
#magic-file:
|
|
|
|
# GeoIP2 database file. Specify path and filename of GeoIP2 database
|
|
#geoip-database: /usr/local/share/GeoLite2/GeoLite2-Country.mmdb
|
|
|
|
legacy:
|
|
uricontent: enabled
|
|
|
|
##
|
|
## Detection settings
|
|
##
|
|
|
|
action-order:
|
|
- pass
|
|
- drop
|
|
- reject
|
|
- alert
|
|
|
|
# IP Reputation
|
|
#reputation-categories-file: /etc/suricata/iprep/categories.txt
|
|
#default-reputation-path: /etc/suricata/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:
|
|
rules-fast-pattern: yes
|
|
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-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: 10gb
|
|
hash-size: 65536
|
|
trackers: 65535 # number of defragmented flows to follow
|
|
max-frags: 1000000 # number of fragments to keep (higher than trackers)
|
|
prealloc: yes
|
|
timeout: 60
|
|
|
|
# Flow settings:
|
|
|
|
flow:
|
|
memcap: 30gb
|
|
hash-size: 65536
|
|
prealloc: 1000000
|
|
emergency-recovery: 30
|
|
prune-flows: 5
|
|
managers: 2 # default to one flow manager
|
|
recyclers: 2 # default to one flow recycler thread
|
|
|
|
vlan:
|
|
use-for-tracking: false
|
|
|
|
# Specific timeouts for flows.
|
|
|
|
flow-timeouts:
|
|
|
|
default:
|
|
new: 10
|
|
established: 100
|
|
closed: 0
|
|
bypassed: 50
|
|
emergency-new: 5
|
|
emergency-established: 50
|
|
emergency-closed: 0
|
|
emergency-bypassed: 10
|
|
tcp:
|
|
new: 10
|
|
established: 100
|
|
closed: 5
|
|
bypassed: 50
|
|
emergency-new: 2
|
|
emergency-established: 50
|
|
emergency-closed: 5
|
|
emergency-bypassed: 10
|
|
udp:
|
|
new: 10
|
|
established: 100
|
|
bypassed: 50
|
|
emergency-new: 2
|
|
emergency-established: 50
|
|
emergency-bypassed: 10
|
|
icmp:
|
|
new: 10
|
|
established: 100
|
|
bypassed: 50
|
|
emergency-new: 2
|
|
emergency-established: 50
|
|
emergency-bypassed: 10
|
|
|
|
# Stream engine settings. Here the TCP stream tracking and reassembly
|
|
# engine is configured.
|
|
|
|
stream:
|
|
memcap: 30gb
|
|
checksum-validation: no # reject wrong csums
|
|
inline: yes # auto will use inline mode in IPS mode, yes or no set it statically
|
|
prealloc-sessions: 1000000
|
|
bypass: true
|
|
midstream: false # do not allow midstream session pickups
|
|
async-oneside: false # do not enable async stream handling
|
|
drop-invalid: no # drop invalid packets
|
|
reassembly:
|
|
memcap: 40gb
|
|
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: 1000000
|
|
check-overlap-different-data: true
|
|
|
|
# Host table:
|
|
#
|
|
# Host table is used by tagging and per host thresholding subsystems.
|
|
#
|
|
host:
|
|
hash-size: 4096
|
|
prealloc: 1000
|
|
memcap: 2048mb
|
|
|
|
# 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
|
|
# 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'
|
|
|
|
|
|
##
|
|
## Performance tuning and profiling
|
|
##
|
|
|
|
detect:
|
|
profile: custom
|
|
custom-values:
|
|
toclient-groups: 300
|
|
toserver-groups: 300
|
|
toclient-sp-groups: 300
|
|
toclient-dp-groups: 300
|
|
toserver-src-groups: 300
|
|
toserver-dst-groups: 5400
|
|
toserver-sp-groups: 300
|
|
toserver-dp-groups: 350
|
|
sgh-mpm-context: full
|
|
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: mpm
|
|
|
|
grouping:
|
|
#tcp-whitelist: 53, 80, 139, 443, 445, 1433, 3306, 3389, 6666, 6667, 8080
|
|
#udp-whitelist: 53, 135, 5060
|
|
|
|
profiling:
|
|
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.
|
|
#
|
|
|
|
mpm-algo: hs
|
|
|
|
# Select the matching algorithm you want to use for single-pattern searches.
|
|
#
|
|
|
|
spm-algo: hs
|
|
|
|
# Suricata is multi-threaded. Here the threading can be influenced.
|
|
threading:
|
|
set-cpu-affinity: yes
|
|
#
|
|
cpu-affinity:
|
|
- management-cpu-set:
|
|
cpu: [ 20,21,22,23,24,25 ] # include only these CPUs in affinity settings
|
|
mode: "exclusive"
|
|
prio:
|
|
default: "low"
|
|
- worker-cpu-set:
|
|
cpu: [ "0-19","40-59" ]
|
|
mode: "exclusive"
|
|
prio:
|
|
default: "high"
|
|
#
|
|
detect-thread-ratio: 1.0
|
|
|
|
# Luajit has a strange memory requirement, it's '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
|
|
# the --enable-profiling configure flag.
|
|
#
|
|
profiling:
|
|
# Run profiling for every xth 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: no
|
|
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: no
|
|
|
|
# per keyword profiling
|
|
keywords:
|
|
enabled: no
|
|
filename: keyword_perf.log
|
|
append: yes
|
|
|
|
prefilter:
|
|
enabled: no
|
|
filename: prefilter_perf.log
|
|
append: yes
|
|
|
|
# per rulegroup profiling
|
|
rulegroups:
|
|
enabled: no
|
|
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: no
|
|
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
|
|
|
|
##
|
|
## Advanced Capture Options
|
|
##
|
|
|
|
# general settings affecting packet capture
|
|
capture:
|
|
#disable-offloading: false
|
|
#checksum-validation: none
|
|
|
|
##
|
|
## Configure Suricata to load Suricata-Update managed rules.
|
|
##
|
|
|
|
##
|
|
## Advanced rule file configuration.
|
|
##
|
|
|
|
default-rule-path: /etc/suricata/rules
|
|
|
|
rule-files:
|
|
# - decoder-events.rules # available in suricata sources under rules dir
|
|
# - stream-events.rules # available in suricata sources under rules dir
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# - modbus-events.rules # available in suricata sources under rules dir
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# - app-layer-events.rules # available in suricata sources under rules dir
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# - dnp3-events.rules # available in suricata sources under rules dir
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- custom.rules
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##
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## Auxiliary configuration files.
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##
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classification-file: /etc/suricata/classification.config
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reference-config-file: /etc/suricata/reference.config
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# threshold-file: /etc/suricata/threshold.config
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