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%YAML 1.1
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---
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# Suricata configuration file. In addition to the comments describing all
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# options in this file, full documentation can be found at:
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# https://redmine.openinfosecfoundation.org/projects/suricata/wiki/Suricatayaml
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# Number of packets allowed to be processed simultaneously. Default is a
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# conservative 1024. A higher number will make sure CPU's/CPU cores will be
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# more easily kept busy, but may negatively impact caching.
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#
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# If you are using the CUDA pattern matcher (mpm-algo: ac-cuda), different rules
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# apply. In that case try something like 60000 or more. This is because the CUDA
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# pattern matcher buffers and scans as many packets as possible in parallel.
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#max-pending-packets: 1024
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# Runmode the engine should use. Please check --list-runmodes to get the available
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# runmodes for each packet acquisition method. Defaults to "autofp" (auto flow pinned
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# load balancing).
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#runmode: autofp
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# Specifies the kind of flow load balancer used by the flow pinned autofp mode.
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#
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# Supported schedulers are:
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#
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# round-robin - Flows assigned to threads in a round robin fashion.
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# active-packets - Flows assigned to threads that have the lowest number of
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# unprocessed packets (default).
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# hash - Flow alloted usihng the address hash. More of a random
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# technique. Was the default in Suricata 1.2.1 and older.
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#
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#autofp-scheduler: active-packets
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# If suricata box is a router for the sniffed networks, set it to 'router'. If
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# it is a pure sniffing setup, set it to 'sniffer-only'.
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# If set to auto, the variable is internally switch to 'router' in IPS mode
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# and 'sniffer-only' in IDS mode.
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# This feature is currently only used by the reject* keywords.
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host-mode: auto
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# Run suricata as user and group.
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#run-as:
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# user: suri
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# group: suri
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# Default pid file.
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# Will use this file if no --pidfile in command options.
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#pid-file: /var/run/suricata.pid
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# Daemon working directory
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# Suricata will change directory to this one if provided
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# Default: "/"
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#daemon-directory: "/"
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# Preallocated size for packet. Default is 1514 which is the classical
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# size for pcap on ethernet. You should adjust this value to the highest
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# packet size (MTU + hardware header) on your system.
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#default-packet-size: 1514
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# The default logging directory. Any log or output file will be
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# placed here if its not specified with a full path name. This can be
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# overridden with the -l command line parameter.
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default-log-dir: /var/log/suricata/
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# Unix command socket can be used to pass commands to suricata.
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# An external tool can then connect to get information from suricata
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# or trigger some modifications of the engine. Set enabled to yes
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# to activate the feature. You can use the filename variable to set
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# the file name of the socket.
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unix-command:
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enabled: no
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#filename: custom.socket
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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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# alert output for use with Barnyard2
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- unified2-alert:
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enabled: yes
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filename: unified2.alert
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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: 32mb
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# Sensor ID field of unified2 alerts.
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#sensor-id: 0
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# HTTP X-Forwarded-For support by adding the unified2 extra header that
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# will contain the actual client IP address or by overwriting the source
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# IP address (helpful when inspecting traffic that is being reversed
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# 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". Note
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# that in the "overwrite" mode, if the reported IP address in the HTTP
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# X-Forwarded-For header is of a different version of the packet
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# received, it will fall-back to "extra-data" mode.
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mode: extra-data
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# Header name were the actual IP address will be reported, if more than
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# one IP address is present, the last IP address will be the one taken
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# into consideration.
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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: yes
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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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#filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
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#extended: yes # Log extended information like fingerprint
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certs-log-dir: certs # directory to store the certificates files
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# a line based log of DNS requests and/or replies (no alerts)
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- dns-log:
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enabled: no
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filename: dns.log
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append: yes
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#filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
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# a line based log to used with pcap file study.
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# this module is dedicated to offline pcap parsing (empty output
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# if used with another kind of input). It can interoperate with
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# pcap parser like wireshark via the suriwire plugin.
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- pcap-info:
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enabled: no
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# Packet log... log packets in pcap format. 2 modes of operation: "normal"
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# 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 are as specified by "dir". In Sguil mode "dir" indicates the base directory.
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# In this base dir the pcaps are created in th 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 will enable ring buffer mode. Will keep Maximum of "max-files" of size "limit"
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max-files: 2000
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mode: normal # normal or sguil.
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#sguil-base-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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# 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 (http://www.prelude-technologies.com/) 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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# The interval field (in seconds) tells after how long output will be written
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# on the log file.
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- stats:
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enabled: yes
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filename: stats.log
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interval: 8
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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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# output module to store extracted files to disk
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#
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# The files are stored to the log-dir in a format "file.<id>" where <id> is
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# an incrementing number starting at 1. For each file "file.<id>" a meta
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# file "file.<id>.meta" is created.
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#
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# File extraction depends on a lot of things to be fully done:
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# - stream reassembly depth. For optimal results, set this to 0 (unlimited)
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# - http request / response body sizes. Again set to 0 for optimal results.
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# - rules that contain the "filestore" keyword.
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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-md5: no # force logging of md5 checksums
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#waldo: file.waldo # waldo file to store the file_id across runs
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# output module to log files tracked in a easily parsable json format
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- file-log:
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enabled: no
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filename: files-json.log
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append: yes
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#filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
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force-magic: no # force logging magic on all logged files
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force-md5: no # force logging of md5 checksums
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# Magic file. The extension .mgc is added to the value here.
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#magic-file: /usr/share/file/magic
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#magic-file: /usr/share/file/magic
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# When running in NFQ inline mode, it is possible to use a simulated
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# non-terminal NFQUEUE verdict.
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# This permit to do send all needed packet to suricata via this a rule:
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# iptables -I FORWARD -m mark ! --mark $MARK/$MASK -j NFQUEUE
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# And below, you can have your standard filtering ruleset. To activate
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# this mode, you need to set mode to 'repeat'
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# If you want packet to be sent to another queue after an ACCEPT decision
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# set mode to 'route' and set next-queue value.
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# On linux >= 3.1, you can set batchcount to a value > 1 to improve performance
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# by processing several packets before sending a verdict (worker runmode only).
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# On linux >= 3.6, you can set the fail-open option to yes to have the kernel
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# accept the packet if suricata is not able to keep pace.
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nfq:
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# mode: accept
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# repeat-mark: 1
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# repeat-mask: 1
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# route-queue: 2
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# batchcount: 20
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# fail-open: yes
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# af-packet support
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# Set threads to > 1 to use PACKET_FANOUT support
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af-packet:
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- interface: eth0
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# Number of receive threads (>1 will enable experimental flow pinned
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# runmode)
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threads: 1
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# Default clusterid. AF_PACKET will load balance packets based on flow.
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# All threads/processes that will participate need to have the same
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# clusterid.
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cluster-id: 99
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# Default AF_PACKET cluster type. AF_PACKET can load balance per flow or per hash.
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# This is only supported for Linux kernel > 3.1
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# possible value are:
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# * cluster_round_robin: round robin load balancing
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# * cluster_flow: all packets of a given flow are send to the same socket
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# * cluster_cpu: all packets treated in kernel by a CPU are send to the same socket
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cluster-type: cluster_flow
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# In some fragmentation case, the hash can not be computed. If "defrag" is set
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# to yes, the kernel will do the needed defragmentation before sending the packets.
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defrag: yes
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# To use the ring feature of AF_PACKET, set 'use-mmap' to yes
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use-mmap: yes
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# Ring size will be computed with respect to max_pending_packets and number
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# of threads. You can set manually the ring size in number of packets by setting
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# the following value. If you are using flow cluster-type and have really network
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# intensive single-flow you could want to set the ring-size independantly of the number
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# of threads:
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#ring-size: 2048
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# On busy system, this could help to set it to yes to recover from a packet drop
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# phase. This will result in some packets (at max a ring flush) being non treated.
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#use-emergency-flush: yes
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# recv buffer size, increase value could improve performance
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# buffer-size: 32768
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# Set to yes to disable promiscuous mode
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# disable-promisc: no
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# Choose checksum verification mode for the interface. At the moment
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# of the capture, some packets may be with an invalid checksum due to
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# offloading to the network card of the checksum computation.
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# Possible values are:
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# - kernel: use indication sent by kernel for each packet (default)
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# - yes: checksum validation is forced
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# - no: checksum validation is disabled
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# - auto: suricata uses a statistical approach to detect when
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# checksum off-loading is used.
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# Warning: 'checksum-validation' must be set to yes to have any validation
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#checksum-checks: kernel
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# BPF filter to apply to this interface. The pcap filter syntax apply here.
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#bpf-filter: port 80 or udp
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# You can use the following variables to activate AF_PACKET tap od IPS mode.
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# If copy-mode is set to ips or tap, the traffic coming to the current
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# interface will be copied to the copy-iface interface. If 'tap' is set, the
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# copy is complete. If 'ips' is set, the packet matching a 'drop' action
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# will not be copied.
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#copy-mode: ips
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#copy-iface: eth1
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- interface: eth1
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threads: 1
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cluster-id: 98
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cluster-type: cluster_flow
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defrag: yes
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# buffer-size: 32768
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# disable-promisc: no
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# Put default values here
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- interface: default
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#threads: 2
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#use-mmap: yes
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legacy:
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uricontent: enabled
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# You can specify a threshold config file by setting "threshold-file"
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# to the path of the threshold config file:
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# threshold-file: /etc/suricata/threshold.config
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# The detection engine builds internal groups of signatures. The engine
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# allow us to specify the profile to use for them, to manage memory on an
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# efficient way keeping a good performance. For the profile keyword you
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# can use the words "low", "medium", "high" or "custom". If you use custom
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# make sure to define the values at "- custom-values" as your convenience.
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# Usually you would prefer medium/high/low.
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#
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# "sgh mpm-context", indicates how the staging should allot mpm contexts for
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# the signature groups. "single" indicates the use of a single context for
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# all the signature group heads. "full" indicates a mpm-context for each
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# group head. "auto" lets the engine decide the distribution of contexts
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# based on the information the engine gathers on the patterns from each
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# group head.
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#
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# The option inspection-recursion-limit is used to limit the recursive calls
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# in the content inspection code. For certain payload-sig combinations, we
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# might end up taking too much time in the content inspection code.
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# If the argument specified is 0, the engine uses an internally defined
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# default limit. On not specifying a value, we use no limits on the recursion.
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detect-engine:
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- profile: medium
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- custom-values:
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toclient-src-groups: 2
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toclient-dst-groups: 2
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toclient-sp-groups: 2
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toclient-dp-groups: 3
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toserver-src-groups: 2
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toserver-dst-groups: 4
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toserver-sp-groups: 2
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toserver-dp-groups: 25
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- sgh-mpm-context: auto
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- inspection-recursion-limit: 3000
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# When rule-reload is enabled, sending a USR2 signal to the Suricata process
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# will trigger a live rule reload. Experimental feature, use with care.
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#- rule-reload: true
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# If set to yes, the loading of signatures will be made after the capture
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# is started. This will limit the downtime in IPS mode.
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#- delayed-detect: yes
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# Suricata is multi-threaded. Here the threading can be influenced.
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threading:
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# On some cpu's/architectures it is beneficial to tie individual threads
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# to specific CPU's/CPU cores. In this case all threads are tied to CPU0,
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# and each extra CPU/core has one "detect" thread.
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#
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# On Intel Core2 and Nehalem CPU's enabling this will degrade performance.
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#
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set-cpu-affinity: no
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# Tune cpu affinity of suricata threads. Each family of threads can be bound
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# on specific CPUs.
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cpu-affinity:
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- management-cpu-set:
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cpu: [ 0 ] # include only these cpus in affinity settings
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- receive-cpu-set:
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cpu: [ 0 ] # include only these cpus in affinity settings
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- decode-cpu-set:
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cpu: [ 0, 1 ]
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mode: "balanced"
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- stream-cpu-set:
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cpu: [ "0-1" ]
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- detect-cpu-set:
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cpu: [ "all" ]
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mode: "exclusive" # run detect threads in these cpus
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# Use explicitely 3 threads and don't compute number by using
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# detect-thread-ratio variable:
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# threads: 3
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prio:
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low: [ 0 ]
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medium: [ "1-2" ]
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high: [ 3 ]
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default: "medium"
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- verdict-cpu-set:
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cpu: [ 0 ]
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prio:
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default: "high"
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- reject-cpu-set:
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cpu: [ 0 ]
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prio:
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default: "low"
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- output-cpu-set:
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cpu: [ "all" ]
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prio:
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default: "medium"
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#
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# By default Suricata creates one "detect" thread per available CPU/CPU core.
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# This setting allows controlling this behaviour. A ratio setting of 2 will
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# create 2 detect threads for each CPU/CPU core. So for a dual core CPU this
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# will result in 4 detect threads. If values below 1 are used, less threads
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# are created. So on a dual core CPU a setting of 0.5 results in 1 detect
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# thread being created. Regardless of the setting at a minimum 1 detect
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# thread will always be created.
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#
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detect-thread-ratio: 1.5
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# Cuda configuration.
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cuda:
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# The "mpm" profile. On not specifying any of these parameters, the engine's
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# internal default values are used, which are same as the ones specified in
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# in the default conf file.
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mpm:
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# The minimum length required to buffer data to the gpu.
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# Anything below this is MPM'ed on the CPU.
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# Can be specified in kb, mb, gb. Just a number indicates it's in bytes.
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# A value of 0 indicates there's no limit.
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data-buffer-size-min-limit: 0
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# The maximum length for data that we would buffer to the gpu.
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# Anything over this is MPM'ed on the CPU.
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# Can be specified in kb, mb, gb. Just a number indicates it's in bytes.
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data-buffer-size-max-limit: 1500
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# The ring buffer size used by the CudaBuffer API to buffer data.
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cudabuffer-buffer-size: 500mb
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# The max chunk size that can be sent to the gpu in a single go.
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gpu-transfer-size: 50mb
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# The timeout limit for batching of packets in microseconds.
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batching-timeout: 2000
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# The device to use for the mpm. Currently we don't support load balancing
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# on multiple gpus. In case you have multiple devices on your system, you
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# can specify the device to use, using this conf. By default we hold 0, to
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# specify the first device cuda sees. To find out device-id associated with
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# the card(s) on the system run "suricata --list-cuda-cards".
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device-id: 0
|
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# No of Cuda streams used for asynchronous processing. All values > 0 are valid.
|
|
# For this option you need a device with Compute Capability > 1.0.
|
|
cuda-streams: 2
|
|
|
|
# Select the multi pattern algorithm you want to run for scan/search the
|
|
# in the engine. The supported algorithms are b2g, b2gc, b2gm, b3g, wumanber,
|
|
# ac and ac-gfbs.
|
|
#
|
|
# The mpm you choose also decides the distribution of mpm contexts for
|
|
# signature groups, specified by the conf - "detect-engine.sgh-mpm-context".
|
|
# Selecting "ac" as the mpm would require "detect-engine.sgh-mpm-context"
|
|
# to be set to "single", because of ac's memory requirements, unless the
|
|
# ruleset is small enough to fit in one's memory, in which case one can
|
|
# use "full" with "ac". Rest of the mpms can be run in "full" mode.
|
|
#
|
|
# There is also a CUDA pattern matcher (only available if Suricata was
|
|
# compiled with --enable-cuda: b2g_cuda. Make sure to update your
|
|
# max-pending-packets setting above as well if you use b2g_cuda.
|
|
|
|
mpm-algo: ac
|
|
|
|
# The memory settings for hash size of these algorithms can vary from lowest
|
|
# (2048) - low (4096) - medium (8192) - high (16384) - higher (32768) - max
|
|
# (65536). The bloomfilter sizes of these algorithms can vary from low (512) -
|
|
# medium (1024) - high (2048).
|
|
#
|
|
# For B2g/B3g algorithms, there is a support for two different scan/search
|
|
# algorithms. For B2g the scan algorithms are B2gScan & B2gScanBNDMq, and
|
|
# search algorithms are B2gSearch & B2gSearchBNDMq. For B3g scan algorithms
|
|
# are B3gScan & B3gScanBNDMq, and search algorithms are B3gSearch &
|
|
# B3gSearchBNDMq.
|
|
#
|
|
# For B2g the different scan/search algorithms and, hash and bloom
|
|
# filter size settings. For B3g the different scan/search algorithms and, hash
|
|
# and bloom filter size settings. For wumanber the hash and bloom filter size
|
|
# settings.
|
|
|
|
pattern-matcher:
|
|
- b2gc:
|
|
search-algo: B2gSearchBNDMq
|
|
hash-size: low
|
|
bf-size: medium
|
|
- b2gm:
|
|
search-algo: B2gSearchBNDMq
|
|
hash-size: low
|
|
bf-size: medium
|
|
- b2g:
|
|
search-algo: B2gSearchBNDMq
|
|
hash-size: low
|
|
bf-size: medium
|
|
- b3g:
|
|
search-algo: B3gSearchBNDMq
|
|
hash-size: low
|
|
bf-size: medium
|
|
- wumanber:
|
|
hash-size: low
|
|
bf-size: medium
|
|
|
|
# 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
|
|
|
|
# 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 determine the size of the hash used to identify flows inside
|
|
# the engine, and by default the value is 65536.
|
|
# At the startup, the engine can preallocate a number of flows, to get a better
|
|
# performance. The number of flows preallocated is 10000 by default.
|
|
# emergency-recovery is the percentage of flows that the engine need to
|
|
# prune before unsetting the emergency state. The emergency state is activated
|
|
# when the memcap limit is reached, allowing to create new flows, but
|
|
# prunning 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 doens't find a flow to prune, it will set
|
|
# the emergency bit and it will try again with more agressive timeouts.
|
|
# If that doesn't work, then it will try to kill the last time seen flows
|
|
# not in use.
|
|
# The memcap can be specified in kb, mb, gb. Just a number indicates it's
|
|
# in bytes.
|
|
|
|
flow:
|
|
memcap: 32mb
|
|
hash-size: 65536
|
|
prealloc: 10000
|
|
emergency-recovery: 30
|
|
|
|
# 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" determine the seconds to wait after a hanshake or
|
|
# stream startup before the engine free 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 it spend that amount
|
|
# without receiving new packets or closing the connection. "closed" is the
|
|
# amount of time to wait after a flow is closed (usually zero).
|
|
#
|
|
# 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
|
|
emergency-new: 10
|
|
emergency-established: 100
|
|
emergency-closed: 0
|
|
tcp:
|
|
new: 60
|
|
established: 3600
|
|
closed: 120
|
|
emergency-new: 10
|
|
emergency-established: 300
|
|
emergency-closed: 20
|
|
udp:
|
|
new: 30
|
|
established: 300
|
|
emergency-new: 10
|
|
emergency-established: 100
|
|
icmp:
|
|
new: 30
|
|
established: 300
|
|
emergency-new: 10
|
|
emergency-established: 100
|
|
|
|
# Stream engine settings. Here the TCP stream tracking and reassembly
|
|
# engine is configured.
|
|
#
|
|
# stream:
|
|
# memcap: 32mb # 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 packet with invalid csum will not
|
|
# # be processed by the engine stream/app layer.
|
|
# # Warning: locally generated trafic 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
|
|
# max-synack-queued: 5 # Max different SYN/ACKs to queue
|
|
#
|
|
# reassembly:
|
|
# memcap: 64mb # 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.
|
|
# # The max acceptable size is 4024 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.
|
|
# # The max acceptable size is 4024 bytes.
|
|
# randomize-chunk-size: yes # Take a random value for chunk size 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-chunk-range: 10 # If randomize-chunk-size is active, the value of chunk-size is
|
|
# # a random value between (1 - randomize-chunk-range/100)*randomize-chunk-size
|
|
# # and (1 + randomize-chunk-range/100)*randomize-chunk-size. Default value
|
|
# # of randomize-chunk-range is 10.
|
|
|
|
stream:
|
|
memcap: 32mb
|
|
checksum-validation: yes # reject wrong csums
|
|
inline: auto # auto will use inline mode in IPS mode, yes or no set it statically
|
|
reassembly:
|
|
memcap: 64mb
|
|
depth: 1mb # reassemble 1mb into a stream
|
|
toserver-chunk-size: 2560
|
|
toclient-chunk-size: 2560
|
|
randomize-chunk-size: yes
|
|
#randomize-chunk-range: 10
|
|
|
|
# Host table:
|
|
#
|
|
# Host table is used by tagging and per host thresholding subsystems.
|
|
#
|
|
host:
|
|
hash-size: 4096
|
|
prealloc: 1000
|
|
memcap: 16777216
|
|
|
|
# Logging configuration. This is not about logging IDS alerts, but
|
|
# IDS output about what its doing, 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 overriden by the SC_LOG_LEVEL env var.
|
|
default-log-level: debug
|
|
|
|
# The default output format. Optional parameter, should default to
|
|
# something reasonable if not provided. Can be overriden in an
|
|
# output section. You can leave this out to get the default.
|
|
#
|
|
# This value is overriden 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 overriden 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
|
|
- file:
|
|
enabled: no
|
|
filename: /var/log/suricata.log
|
|
- syslog:
|
|
enabled: no
|
|
facility: local5
|
|
format: "[%i] <%d> -- "
|
|
|
|
# Tilera mpipe configuration. for use on Tilera TILE-Gx.
|
|
mpipe:
|
|
|
|
# Load balancing mode "static" or "dynamic".
|
|
load-balance: dynamic
|
|
|
|
# List of interfaces we will listen on.
|
|
inputs:
|
|
- interface: xgbe2
|
|
- interface: xgbe3
|
|
- interface: xgbe4
|
|
|
|
|
|
# Relative weight of memory for packets of each mPipe buffer size.
|
|
stack:
|
|
size128: 0
|
|
size256: 9
|
|
size512: 0
|
|
size1024: 0
|
|
size1664: 7
|
|
size4096: 0
|
|
size10386: 0
|
|
size16384: 0
|
|
|
|
# PF_RING configuration. for use with native PF_RING support
|
|
# for more info see http://www.ntop.org/PF_RING.html
|
|
pfring:
|
|
- interface: eth0
|
|
# Number of receive threads (>1 will enable experimental flow pinned
|
|
# runmode)
|
|
threads: 1
|
|
|
|
# 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 or per hash.
|
|
# This is only supported in versions of PF_RING > 4.1.1.
|
|
cluster-type: cluster_flow
|
|
# bpf filter for this interface
|
|
#bpf-filter: tcp
|
|
# Choose checksum verification mode for the interface. At the moment
|
|
# of the capture, some packets may be with an invalid checksum due to
|
|
# offloading to the network card of the checksum computation.
|
|
# 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
|
|
|
|
pcap:
|
|
- interface: eth0
|
|
# On Linux, pcap will try to use mmaped capture and will use buffer-size
|
|
# as total of 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 be with an invalid checksum due to
|
|
# offloading to the network card of the checksum computation.
|
|
# 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 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
|
|
|
|
# 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
|
|
#
|
|
# The 8000 above should be the same number 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
|
|
|
|
# Set the default rule path here to search for the files.
|
|
# if not set, it will look at the current working dir
|
|
default-rule-path: /etc/suricata/rules
|
|
rule-files:
|
|
# - botcc.rules
|
|
# - ciarmy.rules
|
|
# - compromised.rules
|
|
# - drop.rules
|
|
# - dshield.rules
|
|
# - emerging-activex.rules
|
|
# - emerging-attack_response.rules
|
|
# - emerging-chat.rules
|
|
# - emerging-current_events.rules
|
|
# - emerging-dns.rules
|
|
# - emerging-dos.rules
|
|
# - emerging-exploit.rules
|
|
# - emerging-ftp.rules
|
|
# - emerging-games.rules
|
|
# - emerging-icmp_info.rules
|
|
# - emerging-icmp.rules
|
|
# - emerging-imap.rules
|
|
# - emerging-inappropriate.rules
|
|
# - emerging-malware.rules
|
|
# - emerging-misc.rules
|
|
# - emerging-mobile_malware.rules
|
|
# - emerging-netbios.rules
|
|
# - emerging-p2p.rules
|
|
# - emerging-policy.rules
|
|
# - emerging-pop3.rules
|
|
# - emerging-rpc.rules
|
|
# - emerging-scada.rules
|
|
# - emerging-scan.rules
|
|
# - emerging-shellcode.rules
|
|
# - emerging-smtp.rules
|
|
# - emerging-snmp.rules
|
|
# - emerging-sql.rules
|
|
# - emerging-telnet.rules
|
|
# - emerging-tftp.rules
|
|
# - emerging-trojan.rules
|
|
# - emerging-user_agents.rules
|
|
# - emerging-virus.rules
|
|
# - emerging-voip.rules
|
|
# - emerging-web_client.rules
|
|
# - emerging-web_server.rules
|
|
# - emerging-web_specific_apps.rules
|
|
# - emerging-worm.rules
|
|
# - rbn-malvertisers.rules
|
|
# - rbn.rules
|
|
# - tor.rules
|
|
# - decoder-events.rules # available in suricata sources under rules dir
|
|
# - stream-events.rules # available in suricata sources under rules dir
|
|
# - http-events.rules # available in suricata sources under rules dir
|
|
# - smtp-events.rules # available in suricata sources under rules dir
|
|
# - dns-events.rules # available in suricata sources under rules dir
|
|
|
|
classification-file: /etc/suricata/classification.config
|
|
reference-config-file: /etc/suricata/reference.config
|
|
|
|
# Holds variables that would be used by the engine.
|
|
vars:
|
|
|
|
# Holds the address group vars that would be passed in a Signature.
|
|
# These would be retrieved during the Signature address parsing stage.
|
|
address-groups:
|
|
|
|
HOME_NET: "[192.168.0.0/16,10.0.0.0/8,172.16.0.0/12]"
|
|
|
|
EXTERNAL_NET: "!$HOME_NET"
|
|
|
|
HTTP_SERVERS: "$HOME_NET"
|
|
|
|
SMTP_SERVERS: "$HOME_NET"
|
|
|
|
SQL_SERVERS: "$HOME_NET"
|
|
|
|
DNS_SERVERS: "$HOME_NET"
|
|
|
|
TELNET_SERVERS: "$HOME_NET"
|
|
|
|
AIM_SERVERS: "$EXTERNAL_NET"
|
|
|
|
DNP3_SERVER: "$HOME_NET"
|
|
|
|
DNP3_CLIENT: "$HOME_NET"
|
|
|
|
MODBUS_CLIENT: "$HOME_NET"
|
|
|
|
MODBUS_SERVER: "$HOME_NET"
|
|
|
|
ENIP_CLIENT: "$HOME_NET"
|
|
|
|
ENIP_SERVER: "$HOME_NET"
|
|
|
|
# Holds the port group vars that would be passed in a Signature.
|
|
# These would be retrieved during the Signature port parsing stage.
|
|
port-groups:
|
|
|
|
HTTP_PORTS: "80"
|
|
|
|
SHELLCODE_PORTS: "!80"
|
|
|
|
ORACLE_PORTS: 1521
|
|
|
|
SSH_PORTS: 22
|
|
|
|
DNP3_PORTS: 20000
|
|
|
|
# Set the order of alerts bassed on actions
|
|
# The default order is pass, drop, reject, alert
|
|
action-order:
|
|
- pass
|
|
- drop
|
|
- reject
|
|
- alert
|
|
|
|
# IP Reputation
|
|
#reputation-categories-file: /usr/local/etc/suricata/iprep/categories.txt
|
|
#default-reputation-path: /usr/local/etc/suricata/iprep
|
|
#reputation-files:
|
|
# - reputation.list
|
|
|
|
# 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: [10.0.0.0/8, 192.168.1.100, "8762:2352:6241:7245:E000:0000:0000:0000"]
|
|
old-solaris: []
|
|
solaris: ["::1"]
|
|
hpux10: []
|
|
hpux11: []
|
|
irix: []
|
|
macos: []
|
|
vista: []
|
|
windows2k3: []
|
|
|
|
|
|
# Limit for the maximum number of asn1 frames to decode (default 256)
|
|
asn1-max-frames: 256
|
|
|
|
# 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
|
|
|
|
# Holds details on the app-layer. The protocols section details each protocol.
|
|
# Under each protocol, the default value for detection-enabled and "
|
|
# parsed-enabled is yes, unless specified otherwise.
|
|
# Each protocol covers enabling/disabling parsers for all ipprotos
|
|
# the app-layer protocol runs on. For example "dcerpc" refers to the tcp
|
|
# version of the protocol as well as the udp version of the 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 detection only(parser disabled).
|
|
app-layer:
|
|
protocols:
|
|
tls:
|
|
enabled: yes
|
|
detection-ports:
|
|
tcp:
|
|
toserver: 443
|
|
|
|
#no-reassemble: yes
|
|
dcerpc:
|
|
enabled: yes
|
|
ftp:
|
|
enabled: yes
|
|
ssh:
|
|
enabled: yes
|
|
smtp:
|
|
enabled: yes
|
|
imap:
|
|
enabled: detection-only
|
|
msn:
|
|
enabled: detection-only
|
|
smb:
|
|
enabled: yes
|
|
detection-ports:
|
|
tcp:
|
|
toserver: 139
|
|
# smb2 detection is disabled internally inside the engine.
|
|
#smb2:
|
|
# enabled: yes
|
|
dnstcp:
|
|
enabled: yes
|
|
detection-ports:
|
|
tcp:
|
|
toserver: 53
|
|
dnsudp:
|
|
enabled: yes
|
|
detection-ports:
|
|
udp:
|
|
toserver: 53
|
|
http:
|
|
enabled: yes
|
|
|
|
###########################################################################
|
|
# Configure libhtp.
|
|
#
|
|
#
|
|
# 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
|
|
#
|
|
# 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
|
|
#
|
|
# 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: 3072
|
|
response-body-limit: 3072
|
|
|
|
# inspection limits
|
|
request-body-minimal-inspect-size: 32kb
|
|
request-body-inspect-window: 4kb
|
|
response-body-minimal-inspect-size: 32kb
|
|
response-body-inspect-window: 4kb
|
|
|
|
# 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
|
|
|
|
# Profiling settings. Only effective if Suricata has been built with the
|
|
# the --enable-profiling configure flag.
|
|
#
|
|
profiling:
|
|
|
|
# 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
|
|
sort: avgticks
|
|
|
|
# Limit the number of items printed at exit.
|
|
limit: 100
|
|
|
|
# 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
|
|
|
|
# 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
|
|
|
|
napatech:
|
|
# The Host Buffer Allowance for all streams
|
|
# (-1 = OFF, 1 - 100 = percentage of the host buffer that can be held back)
|
|
hba: -1
|
|
|
|
# use_all_streams set to "yes" 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.
|
|
use-all-streams: yes
|
|
|
|
# The streams to listen on
|
|
streams: [1, 2, 3]
|