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- %YAML 1.1
- ---
- # Suricata configuration file. In addition to the comments describing all
- # options in this file, full documentation can be found at:
- # https://redmine.openinfosecfoundation.org/projects/suricata/wiki/Suricatayaml
- # Number of packets allowed to be processed simultaneously. Default is a
- # conservative 1024. A higher number will make sure CPU's/CPU cores will be
- # more easily kept busy, but may negatively impact caching.
- #
- # If you are using the CUDA pattern matcher (mpm-algo: ac-cuda), different rules
- # apply. In that case try something like 60000 or more. This is because the CUDA
- # pattern matcher buffers and scans as many packets as possible in parallel.
- #max-pending-packets: 5000
- # Runmode the engine should use. Please check --list-runmodes to get the available
- # runmodes for each packet acquisition method. Defaults to "autofp" (auto flow pinned
- # load balancing).
- #runmode: autofp
- # Specifies the kind of flow load balancer used by the flow pinned autofp mode.
- #
- # Supported schedulers are:
- #
- # round-robin - Flows assigned to threads in a round robin fashion.
- # active-packets - Flows assigned to threads that have the lowest number of
- # unprocessed packets (default).
- # hash - Flow alloted usihng the address hash. More of a random
- # technique. Was the default in Suricata 1.2.1 and older.
- #
- #autofp-scheduler: active-packets
- # If suricata box is a router for the sniffed networks, set it to 'router'. If
- # it is a pure sniffing setup, set it to 'sniffer-only'.
- # If set to auto, the variable is internally switch to 'router' in IPS mode
- # and 'sniffer-only' in IDS mode.
- # This feature is currently only used by the reject* keywords.
- host-mode: sniffer-only
- # Run suricata as user and group.
- run-as:
- user: sguil
- group: sguil
- # Default pid file.
- # Will use this file if no --pidfile in command options.
- #pid-file: /var/run/suricata.pid
- # Daemon working directory
- # Suricata will change directory to this one if provided
- # Default: "/"
- #daemon-directory: "/"
- # Preallocated size for packet. Default is 1514 which is the classical
- # size for pcap on ethernet. You should adjust this value to the highest
- # packet size (MTU + hardware header) on your system.
- #default-packet-size: 1514
- # The default logging directory. Any log or output file will be
- # placed here if its not specified with a full path name. This can be
- # overridden with the -l command line parameter.
- default-log-dir: /var/log/nsm/
- # Unix command socket can be used to pass commands to suricata.
- # An external tool can then connect to get information from suricata
- # or trigger some modifications of the engine. Set enabled to yes
- # to activate the feature. You can use the filename variable to set
- # the file name of the socket.
- unix-command:
- enabled: no
- #filename: custom.socket
- # Configure the type of alert (and other) logging you would like.
- outputs:
- # a line based alerts log similar to Snort's fast.log
- - fast:
- enabled: no
- filename: fast.log
- append: yes
- #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
- # Extensible Event Format (nicknamed EVE) event log in JSON format
- - eve-log:
- enabled: no
- type: file #file|syslog|unix_dgram|unix_stream
- filename: eve.json
- # the following are valid when type: syslog above
- #identity: "suricata"
- #facility: local5
- #level: Info ## possible levels: Emergency, Alert, Critical,
- ## Error, Warning, Notice, Info, Debug
- types:
- - alert
- - http:
- extended: yes # enable this for extended logging information
- # custom allows additional http fields to be included in eve-log
- # the example below adds three additional fields when uncommented
- #custom: [Accept-Encoding, Accept-Language, Authorization]
- - dns
- - tls:
- extended: yes # enable this for extended logging information
- - files:
- force-magic: no # force logging magic on all logged files
- force-md5: no # force logging of md5 checksums
- #- drop
- - ssh
- # alert output for use with Barnyard2
- - unified2-alert:
- enabled: yes
- filename: snort.unified2
- # File size limit. Can be specified in kb, mb, gb. Just a number
- # is parsed as bytes.
- #limit: 32mb
- # Sensor ID field of unified2 alerts.
- #sensor-id: 0
- # HTTP X-Forwarded-For support by adding the unified2 extra header that
- # will contain the actual client IP address or by overwriting the source
- # IP address (helpful when inspecting traffic that is being reversed
- # proxied).
- xff:
- enabled: no
- # Two operation modes are available, "extra-data" and "overwrite". Note
- # that in the "overwrite" mode, if the reported IP address in the HTTP
- # X-Forwarded-For header is of a different version of the packet
- # received, it will fall-back to "extra-data" mode.
- mode: extra-data
- # Header name were the actual IP address will be reported, if more than
- # one IP address is present, the last IP address will be the one taken
- # into consideration.
- header: X-Forwarded-For
- # a line based log of HTTP requests (no alerts)
- - http-log:
- enabled: no
- filename: http.log
- append: yes
- #extended: yes # enable this for extended logging information
- #custom: yes # enabled the custom logging format (defined by customformat)
- #customformat: "%{%D-%H:%M:%S}t.%z %{X-Forwarded-For}i %H %m %h %u %s %B %a:%p -> %A:%P"
- #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
- # a line based log of TLS handshake parameters (no alerts)
- - tls-log:
- enabled: no # Log TLS connections.
- filename: tls.log # File to store TLS logs.
- append: yes
- #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
- #extended: yes # Log extended information like fingerprint
- certs-log-dir: certs # directory to store the certificates files
- # a line based log of DNS requests and/or replies (no alerts)
- - dns-log:
- enabled: no
- filename: dns.log
- append: yes
- #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
- # a line based log to used with pcap file study.
- # this module is dedicated to offline pcap parsing (empty output
- # if used with another kind of input). It can interoperate with
- # pcap parser like wireshark via the suriwire plugin.
- - pcap-info:
- enabled: no
- # Packet log... log packets in pcap format. 2 modes of operation: "normal"
- # and "sguil".
- #
- # In normal mode a pcap file "filename" is created in the default-log-dir,
- # or are as specified by "dir". In Sguil mode "dir" indicates the base directory.
- # In this base dir the pcaps are created in th directory structure Sguil expects:
- #
- # $sguil-base-dir/YYYY-MM-DD/$filename.<timestamp>
- #
- # By default all packets are logged except:
- # - TCP streams beyond stream.reassembly.depth
- # - encrypted streams after the key exchange
- #
- - pcap-log:
- enabled: no
- filename: log.pcap
- # File size limit. Can be specified in kb, mb, gb. Just a number
- # is parsed as bytes.
- limit: 1000mb
- # If set to a value will enable ring buffer mode. Will keep Maximum of "max-files" of size "limit"
- max-files: 2000
- mode: normal # normal or sguil.
- #sguil-base-dir: /nsm_data/
- #ts-format: usec # sec or usec second format (default) is filename.sec usec is filename.sec.usec
- use-stream-depth: no #If set to "yes" packets seen after reaching stream inspection depth are ignored. "no" logs all packets
- # a full alerts log containing much information for signature writers
- # or for investigating suspected false positives.
- - alert-debug:
- enabled: no
- filename: alert-debug.log
- append: yes
- #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
- # alert output to prelude (http://www.prelude-technologies.com/) only
- # available if Suricata has been compiled with --enable-prelude
- - alert-prelude:
- enabled: no
- profile: suricata
- log-packet-content: no
- log-packet-header: yes
- # Stats.log contains data from various counters of the suricata engine.
- # The interval field (in seconds) tells after how long output will be written
- # on the log file.
- - stats:
- enabled: yes
- filename: stats.log
- interval: 60
- # a line based alerts log similar to fast.log into syslog
- - syslog:
- enabled: no
- # reported identity to syslog. If ommited the program name (usually
- # suricata) will be used.
- #identity: "suricata"
- facility: local5
- #level: Info ## possible levels: Emergency, Alert, Critical,
- ## Error, Warning, Notice, Info, Debug
- # a line based information for dropped packets in IPS mode
- - drop:
- enabled: no
- filename: drop.log
- append: yes
- #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
- # output module to store extracted files to disk
- #
- # The files are stored to the log-dir in a format "file.<id>" where <id> is
- # an incrementing number starting at 1. For each file "file.<id>" a meta
- # file "file.<id>.meta" is created.
- #
- # File extraction depends on a lot of things to be fully done:
- # - stream reassembly depth. For optimal results, set this to 0 (unlimited)
- # - http request / response body sizes. Again set to 0 for optimal results.
- # - rules that contain the "filestore" keyword.
- - file-store:
- enabled: no # set to yes to enable
- log-dir: files # directory to store the files
- force-magic: no # force logging magic on all stored files
- force-md5: no # force logging of md5 checksums
- #waldo: file.waldo # waldo file to store the file_id across runs
- # output module to log files tracked in a easily parsable json format
- - file-log:
- enabled: no
- filename: files-json.log
- append: yes
- #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
- force-magic: no # force logging magic on all logged files
- force-md5: no # force logging of md5 checksums
- # Magic file. The extension .mgc is added to the value here.
- #magic-file: /usr/share/file/magic
- magic-file: /usr/share/file/magic
- # When running in NFQ inline mode, it is possible to use a simulated
- # non-terminal NFQUEUE verdict.
- # This permit to do send all needed packet to suricata via this a rule:
- # iptables -I FORWARD -m mark ! --mark $MARK/$MASK -j NFQUEUE
- # And below, you can have your standard filtering ruleset. To activate
- # this mode, you need to set mode to 'repeat'
- # If you want packet to be sent to another queue after an ACCEPT decision
- # set mode to 'route' and set next-queue value.
- # On linux >= 3.1, you can set batchcount to a value > 1 to improve performance
- # by processing several packets before sending a verdict (worker runmode only).
- # On linux >= 3.6, you can set the fail-open option to yes to have the kernel
- # accept the packet if suricata is not able to keep pace.
- nfq:
- # mode: accept
- # repeat-mark: 1
- # repeat-mask: 1
- # route-queue: 2
- # batchcount: 20
- # fail-open: yes
- # af-packet support
- # Set threads to > 1 to use PACKET_FANOUT support
- af-packet:
- - interface: eth1
- # Number of receive threads (>1 will enable experimental flow pinned
- # runmode)
- threads: 2
- # Default clusterid. AF_PACKET will load balance packets based on flow.
- # All threads/processes that will participate need to have the same
- # clusterid.
- cluster-id: 51
- # Default AF_PACKET cluster type. AF_PACKET can load balance per flow or per hash.
- # This is only supported for Linux kernel > 3.1
- # possible value are:
- # * cluster_round_robin: round robin load balancing
- # * cluster_flow: all packets of a given flow are send to the same socket
- # * cluster_cpu: all packets treated in kernel by a CPU are send to the same socket
- cluster-type: cluster_flow
- # In some fragmentation case, the hash can not be computed. If "defrag" is set
- # to yes, the kernel will do the needed defragmentation before sending the packets.
- defrag: yes
- # To use the ring feature of AF_PACKET, set 'use-mmap' to yes
- use-mmap: yes
- # Ring size will be computed with respect to max_pending_packets and number
- # of threads. You can set manually the ring size in number of packets by setting
- # the following value. If you are using flow cluster-type and have really network
- # intensive single-flow you could want to set the ring-size independantly of the number
- # of threads:
- #ring-size: 2048
- # On busy system, this could help to set it to yes to recover from a packet drop
- # phase. This will result in some packets (at max a ring flush) being non treated.
- #use-emergency-flush: yes
- # recv buffer size, increase value could improve performance
- # buffer-size: 32768
- # Set to yes to disable promiscuous mode
- # disable-promisc: no
- # Choose checksum verification mode for the interface. At the moment
- # of the capture, some packets may be with an invalid checksum due to
- # offloading to the network card of the checksum computation.
- # Possible values are:
- # - kernel: use indication sent by kernel for each packet (default)
- # - yes: checksum validation is forced
- # - no: checksum validation is disabled
- # - auto: suricata uses a statistical approach to detect when
- # checksum off-loading is used.
- # Warning: 'checksum-validation' must be set to yes to have any validation
- #checksum-checks: kernel
- # BPF filter to apply to this interface. The pcap filter syntax apply here.
- #bpf-filter: port 80 or udp
- # You can use the following variables to activate AF_PACKET tap od IPS mode.
- # If copy-mode is set to ips or tap, the traffic coming to the current
- # interface will be copied to the copy-iface interface. If 'tap' is set, the
- # copy is complete. If 'ips' is set, the packet matching a 'drop' action
- # will not be copied.
- #copy-mode: ips
- #copy-iface: eth1
- - interface: eth1
- threads: 2
- cluster-id: 51
- cluster-type: cluster_flow
- defrag: yes
- # buffer-size: 32768
- # disable-promisc: no
- # Put default values here
- - interface: default
- #threads: 2
- #use-mmap: yes
- legacy:
- uricontent: enabled
- # You can specify a threshold config file by setting "threshold-file"
- # to the path of the threshold config file:
- threshold-file: /etc/nsm/hera-na0-eth1/threshold.conf
- # The detection engine builds internal groups of signatures. The engine
- # allow us to specify the profile to use for them, to manage memory on an
- # efficient way keeping a good performance. For the profile keyword you
- # can use the words "low", "medium", "high" or "custom". If you use custom
- # make sure to define the values at "- custom-values" as your convenience.
- # Usually you would prefer medium/high/low.
- #
- # "sgh mpm-context", indicates how the staging should allot mpm contexts for
- # the signature groups. "single" indicates the use of a single context for
- # all the signature group heads. "full" indicates a mpm-context for each
- # group head. "auto" lets the engine decide the distribution of contexts
- # based on the information the engine gathers on the patterns from each
- # group head.
- #
- # The option inspection-recursion-limit is used to limit the recursive calls
- # in the content inspection code. For certain payload-sig combinations, we
- # might end up taking too much time in the content inspection code.
- # If the argument specified is 0, the engine uses an internally defined
- # default limit. On not specifying a value, we use no limits on the recursion.
- detect-engine:
- - profile: medium
- - custom-values:
- toclient-src-groups: 2
- toclient-dst-groups: 2
- toclient-sp-groups: 2
- toclient-dp-groups: 3
- toserver-src-groups: 2
- toserver-dst-groups: 4
- toserver-sp-groups: 2
- toserver-dp-groups: 25
- - sgh-mpm-context: auto
- - inspection-recursion-limit: 3000
- # When rule-reload is enabled, sending a USR2 signal to the Suricata process
- # will trigger a live rule reload. Experimental feature, use with care.
- #- rule-reload: true
- # 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
- # Suricata is multi-threaded. Here the threading can be influenced.
- threading:
- # On some cpu's/architectures it is beneficial to tie individual threads
- # to specific CPU's/CPU cores. In this case all threads are tied to CPU0,
- # and each extra CPU/core has one "detect" thread.
- #
- # On Intel Core2 and Nehalem CPU's enabling this will degrade performance.
- #
- set-cpu-affinity: no
- # Tune cpu affinity of suricata threads. Each family of threads can be bound
- # on specific CPUs.
- cpu-affinity:
- - management-cpu-set:
- cpu: [ 0 ] # include only these cpus in affinity settings
- - receive-cpu-set:
- cpu: [ 0 ] # include only these cpus in affinity settings
- - decode-cpu-set:
- cpu: [ 0, 1 ]
- mode: "balanced"
- - stream-cpu-set:
- cpu: [ "0-1" ]
- - detect-cpu-set:
- cpu: [ "all" ]
- mode: "exclusive" # run detect threads in these cpus
- # Use explicitely 3 threads and don't compute number by using
- # detect-thread-ratio variable:
- # threads: 3
- prio:
- low: [ 0 ]
- medium: [ "1-2" ]
- high: [ 3 ]
- default: "medium"
- - verdict-cpu-set:
- cpu: [ 0 ]
- prio:
- default: "high"
- - reject-cpu-set:
- cpu: [ 0 ]
- prio:
- default: "low"
- - output-cpu-set:
- cpu: [ "all" ]
- prio:
- default: "medium"
- #
- # By default Suricata creates one "detect" thread per available CPU/CPU core.
- # This setting allows controlling this behaviour. A ratio setting of 2 will
- # create 2 detect threads for each CPU/CPU core. So for a dual core CPU this
- # will result in 4 detect threads. If values below 1 are used, less threads
- # are created. So on a dual core CPU a setting of 0.5 results in 1 detect
- # thread being created. Regardless of the setting at a minimum 1 detect
- # thread will always be created.
- #
- detect-thread-ratio: 1.5
- # Cuda configuration.
- cuda:
- # The "mpm" profile. On not specifying any of these parameters, the engine's
- # internal default values are used, which are same as the ones specified in
- # in the default conf file.
- mpm:
- # The minimum length required to buffer data to the gpu.
- # Anything below this is MPM'ed on the CPU.
- # Can be specified in kb, mb, gb. Just a number indicates it's in bytes.
- # A value of 0 indicates there's no limit.
- data-buffer-size-min-limit: 0
- # The maximum length for data that we would buffer to the gpu.
- # Anything over this is MPM'ed on the CPU.
- # Can be specified in kb, mb, gb. Just a number indicates it's in bytes.
- data-buffer-size-max-limit: 1500
- # The ring buffer size used by the CudaBuffer API to buffer data.
- cudabuffer-buffer-size: 500mb
- # The max chunk size that can be sent to the gpu in a single go.
- gpu-transfer-size: 50mb
- # The timeout limit for batching of packets in microseconds.
- batching-timeout: 2000
- # The device to use for the mpm. Currently we don't support load balancing
- # on multiple gpus. In case you have multiple devices on your system, you
- # can specify the device to use, using this conf. By default we hold 0, to
- # specify the first device cuda sees. To find out device-id associated with
- # the card(s) on the system run "suricata --list-cuda-cards".
- device-id: 0
- # 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
- # Enable defrag per host settings
- # host-config:
- #
- # - dmz:
- # timeout: 30
- # address: [192.168.1.0/24, 127.0.0.0/8, 1.1.1.0/24, 2.2.2.0/24, "1.1.1.1", "2.2.2.2", "::1"]
- #
- # - lan:
- # timeout: 45
- # address:
- # - 192.168.0.0/24
- # - 192.168.10.0/24
- # - 172.16.14.0/24
- # Flow settings:
- # By default, the reserved memory (memcap) for flows is 32MB. This is the limit
- # for flow allocation inside the engine. You can change this value to allow
- # more memory usage for flows.
- # The hash-size 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: 128mb
- hash-size: 65536
- prealloc: 5000
- 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: false
- # 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.
- #
- # raw: yes # 'Raw' reassembly enabled or disabled.
- # # raw is for content inspection by detection
- # # engine.
- #
- # chunk-prealloc: 250 # Number of preallocated stream chunks. These
- # # are used during stream inspection (raw).
- # segments: # Settings for reassembly segment pool.
- # - size: 4 # Size of the (data)segment for a pool
- # prealloc: 256 # Number of segments to prealloc and keep
- # # in the pool.
- #
- stream:
- memcap: 128mb
- checksum-validation: yes # reject wrong csums
- inline: no # auto will use inline mode in IPS mode, yes or no set it statically
- reassembly:
- memcap: 2gb
- depth: 4mb # reassemble 1mb into a stream
- toserver-chunk-size: 2560
- toclient-chunk-size: 2560
- randomize-chunk-size: yes
- #randomize-chunk-range: 10
- raw: yes
- chunk-prealloc: 250
- segments:
- - size: 4
- prealloc: 256
- - size: 16
- prealloc: 1500
- - size: 112
- prealloc: 2000
- - size: 248
- prealloc: 12500
- - size: 512
- prealloc: 12500
- - size: 768
- prealloc: 1024
- - size: 1448
- prealloc: 3500
- - size: 65535
- prealloc: 2000
- # 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: notice
- # 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 modes: "static", "dynamic", "sticky", or "round-robin".
- load-balance: dynamic
- # Number of Packets in each ingress packet queue. Must be 128, 512, 2028 or 65536
- iqueue-packets: 2048
- # 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: eth1
- # Number of receive threads (>1 will enable experimental flow pinned
- # runmode)
- threads: 2
- # 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: 51
- # 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: 51
- # cluster-type: cluster_flow
- # Put default values here
- - interface: default
- #threads: 2
- pcap:
- - interface: eth1
- # 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
- pcap-file:
- # Possible values are:
- # - yes: checksum validation is forced
- # - no: checksum validation is disabled
- # - auto: suricata uses a statistical approach to detect when
- # checksum off-loading is used. (default)
- # Warning: 'checksum-validation' must be set to yes to have checksum tested
- checksum-checks: auto
- # 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/nsm/rules/
- rule-files:
- - local.rules
- - downloaded.rules
- classification-file: /etc/nsm/hera-na0-eth1/classification.config
- reference-config-file: /etc/nsm/hera-na0-eth1/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: @e_sysconfdir@iprep/categories.txt
- #default-reputation-path: @e_sysconfdir@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: []
- old-solaris: []
- solaris: []
- 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:
- dp: 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:
- dp: 139
- # smb2 detection is disabled internally inside the engine.
- #smb2:
- # enabled: yes
- 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: yes
- detection-ports:
- dp: 53
- udp:
- enabled: yes
- detection-ports:
- dp: 53
- http:
- enabled: yes
- memcap: 256mb
- ###########################################################################
- # 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
- #
- # 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: 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
- # 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
- # 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
- sort: avgticks
- # Limit the number of items printed at exit.
- limit: 100
- # per keyword profiling
- keywords:
- enabled: no
- filename: keyword_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
- # 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]
- # Includes. Files included here will be handled as if they were
- # inlined in this configuration file.
- #include: include1.yaml
- #include: include2.yaml
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