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diff --git a/suricata.yaml.in b/suricata.yaml.in new file mode 100644 index 0000000..b141c08 --- /dev/null +++ b/suricata.yaml.in @@ -0,0 +1,2173 @@ +%YAML 1.1 +--- + +# Suricata configuration file. In addition to the comments describing all +# options in this file, full documentation can be found at: +# https://docs.suricata.io/en/latest/configuration/suricata-yaml.html + +# This configuration file generated by Suricata @PACKAGE_VERSION@. +suricata-version: "@MAJOR_MINOR@" + +## +## Step 1: Inform Suricata about your network +## + +vars: + # more specific is better for alert accuracy and performance + address-groups: + HOME_NET: "[192.168.0.0/16,10.0.0.0/8,172.16.0.0/12]" + #HOME_NET: "[192.168.0.0/16]" + #HOME_NET: "[10.0.0.0/8]" + #HOME_NET: "[172.16.0.0/12]" + #HOME_NET: "any" + + EXTERNAL_NET: "!$HOME_NET" + #EXTERNAL_NET: "any" + + HTTP_SERVERS: "$HOME_NET" + SMTP_SERVERS: "$HOME_NET" + SQL_SERVERS: "$HOME_NET" + DNS_SERVERS: "$HOME_NET" + TELNET_SERVERS: "$HOME_NET" + AIM_SERVERS: "$EXTERNAL_NET" + DC_SERVERS: "$HOME_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" + + port-groups: + HTTP_PORTS: "80" + SHELLCODE_PORTS: "!80" + ORACLE_PORTS: 1521 + SSH_PORTS: 22 + DNP3_PORTS: 20000 + MODBUS_PORTS: 502 + FILE_DATA_PORTS: "[$HTTP_PORTS,110,143]" + FTP_PORTS: 21 + GENEVE_PORTS: 6081 + VXLAN_PORTS: 4789 + TEREDO_PORTS: 3544 + +## +## Step 2: Select outputs to enable +## + +# The default logging directory. Any log or output file will be +# placed here if it's not specified with a full path name. This can be +# overridden with the -l command line parameter. +default-log-dir: @e_logdir@ + +# Global stats configuration +stats: + enabled: yes + # The interval field (in seconds) controls the interval at + # which stats are updated in the log. + interval: 8 + # Add decode events to stats. + #decoder-events: true + # Decoder event prefix in stats. Has been 'decoder' before, but that leads + # to missing events in the eve.stats records. See issue #2225. + #decoder-events-prefix: "decoder.event" + # Add stream events as stats. + #stream-events: false + +# Plugins -- Experimental -- specify the filename for each plugin shared object +plugins: +# - /path/to/plugin.so + +# 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: yes + 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: @e_enable_evelog@ + filetype: regular #regular|syslog|unix_dgram|unix_stream|redis + filename: eve.json + # Enable for multi-threaded eve.json output; output files are amended with + # an identifier, e.g., eve.9.json + #threaded: false + #prefix: "@cee: " # prefix to prepend to each log entry + # the following are valid when type: syslog above + #identity: "suricata" + #facility: local5 + #level: Info ## possible levels: Emergency, Alert, Critical, + ## Error, Warning, Notice, Info, Debug + #ethernet: no # log ethernet header in events when available + #redis: + # server: 127.0.0.1 + # port: 6379 + # async: true ## if redis replies are read asynchronously + # mode: list ## possible values: list|lpush (default), rpush, channel|publish + # ## lpush and rpush are using a Redis list. "list" is an alias for lpush + # ## publish is using a Redis channel. "channel" is an alias for publish + # key: suricata ## key or channel to use (default to suricata) + # Redis pipelining set up. This will enable to only do a query every + # 'batch-size' events. This should lower the latency induced by network + # connection at the cost of some memory. There is no flushing implemented + # so this setting should be reserved to high traffic Suricata deployments. + # pipelining: + # enabled: yes ## set enable to yes to enable query pipelining + # batch-size: 10 ## number of entries to keep in buffer + + # Include top level metadata. Default yes. + #metadata: no + + # include the name of the input pcap file in pcap file processing mode + pcap-file: false + + # Community Flow ID + # Adds a 'community_id' field to EVE records. These are meant to give + # records a predictable flow ID that can be used to match records to + # output of other tools such as Zeek (Bro). + # + # Takes a 'seed' that needs to be same across sensors and tools + # to make the id less predictable. + + # enable/disable the community id feature. + community-id: false + # Seed value for the ID output. Valid values are 0-65535. + community-id-seed: 0 + + # HTTP X-Forwarded-For support by adding an extra field or overwriting + # the source or destination IP address (depending on flow direction) + # with the one reported in the X-Forwarded-For HTTP header. This is + # helpful when reviewing alerts for traffic that is being reverse + # or forward proxied. + xff: + enabled: no + # Two operation modes are available: "extra-data" and "overwrite". + mode: extra-data + # Two proxy deployments are supported: "reverse" and "forward". In + # a "reverse" deployment the IP address used is the last one, in a + # "forward" deployment the first IP address is used. + deployment: reverse + # Header name where the actual IP address will be reported. If more + # than one IP address is present, the last IP address will be the + # one taken into consideration. + header: X-Forwarded-For + + types: + - alert: + # payload: yes # enable dumping payload in Base64 + # payload-buffer-size: 4kb # max size of payload buffer to output in eve-log + # payload-printable: yes # enable dumping payload in printable (lossy) format + # packet: yes # enable dumping of packet (without stream segments) + # metadata: no # enable inclusion of app layer metadata with alert. Default yes + # http-body: yes # Requires metadata; enable dumping of HTTP body in Base64 + # http-body-printable: yes # Requires metadata; enable dumping of HTTP body in printable format + + # Enable the logging of tagged packets for rules using the + # "tag" keyword. + tagged-packets: yes + # Enable logging the final action taken on a packet by the engine + # (e.g: the alert may have action 'allowed' but the verdict be + # 'drop' due to another alert. That's the engine's verdict) + # verdict: yes + # app layer frames + - frame: + # disabled by default as this is very verbose. + enabled: no + - anomaly: + # Anomaly log records describe unexpected conditions such + # as truncated packets, packets with invalid IP/UDP/TCP + # length values, and other events that render the packet + # invalid for further processing or describe unexpected + # behavior on an established stream. Networks which + # experience high occurrences of anomalies may experience + # packet processing degradation. + # + # Anomalies are reported for the following: + # 1. Decode: Values and conditions that are detected while + # decoding individual packets. This includes invalid or + # unexpected values for low-level protocol lengths as well + # as stream related events (TCP 3-way handshake issues, + # unexpected sequence number, etc). + # 2. Stream: This includes stream related events (TCP + # 3-way handshake issues, unexpected sequence number, + # etc). + # 3. Application layer: These denote application layer + # specific conditions that are unexpected, invalid or are + # unexpected given the application monitoring state. + # + # By default, anomaly logging is enabled. When anomaly + # logging is enabled, applayer anomaly reporting is + # also enabled. + enabled: yes + # + # Choose one or more types of anomaly logging and whether to enable + # logging of the packet header for packet anomalies. + types: + # decode: no + # stream: no + # applayer: yes + #packethdr: no + - 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] + # set this value to one and only one from {both, request, response} + # to dump all HTTP headers for every HTTP request and/or response + # dump-all-headers: none + - dns: + # This configuration uses the new DNS logging format, + # the old configuration is still available: + # https://docs.suricata.io/en/latest/output/eve/eve-json-output.html#dns-v1-format + + # As of Suricata 5.0, version 2 of the eve dns output + # format is the default. + #version: 2 + + # Enable/disable this logger. Default: enabled. + #enabled: yes + + # Control logging of requests and responses: + # - requests: enable logging of DNS queries + # - responses: enable logging of DNS answers + # By default both requests and responses are logged. + #requests: no + #responses: no + + # Format of answer logging: + # - detailed: array item per answer + # - grouped: answers aggregated by type + # Default: all + #formats: [detailed, grouped] + + # DNS record types to log, based on the query type. + # Default: all. + #types: [a, aaaa, cname, mx, ns, ptr, txt] + - tls: + extended: yes # enable this for extended logging information + # output TLS transaction where the session is resumed using a + # session id + #session-resumption: no + # custom controls which TLS fields that are included in eve-log + #custom: [subject, issuer, session_resumed, serial, fingerprint, sni, version, not_before, not_after, certificate, chain, ja3, ja3s] + - files: + force-magic: no # force logging magic on all logged files + # force logging of checksums, available hash functions are md5, + # sha1 and sha256 + #force-hash: [md5] + #- drop: + # alerts: yes # log alerts that caused drops + # flows: all # start or all: 'start' logs only a single drop + # # per flow direction. All logs each dropped pkt. + # Enable logging the final action taken on a packet by the engine + # (will show more information in case of a drop caused by 'reject') + # verdict: yes + - smtp: + #extended: yes # enable this for extended logging information + # this includes: bcc, message-id, subject, x_mailer, user-agent + # custom fields logging from the list: + # reply-to, bcc, message-id, subject, x-mailer, user-agent, received, + # x-originating-ip, in-reply-to, references, importance, priority, + # sensitivity, organization, content-md5, date + #custom: [received, x-mailer, x-originating-ip, relays, reply-to, bcc] + # output md5 of fields: body, subject + # for the body you need to set app-layer.protocols.smtp.mime.body-md5 + # to yes + #md5: [body, subject] + + #- dnp3 + - ftp + - rdp + - nfs + - smb + - tftp + - ike + - dcerpc + - krb5 + - bittorrent-dht + - snmp + - rfb + - sip + - quic + - dhcp: + enabled: yes + # When extended mode is on, all DHCP messages are logged + # with full detail. When extended mode is off (the + # default), just enough information to map a MAC address + # to an IP address is logged. + extended: no + - ssh + - mqtt: + # passwords: yes # enable output of passwords + - http2 + - pgsql: + enabled: no + # passwords: yes # enable output of passwords. Disabled by default + - stats: + totals: yes # stats for all threads merged together + threads: no # per thread stats + deltas: no # include delta values + # bi-directional flows + - flow + # uni-directional flows + #- netflow + + # Metadata event type. Triggered whenever a pktvar is saved + # and will include the pktvars, flowvars, flowbits and + # flowints. + #- metadata + + # EXPERIMENTAL per packet output giving TCP state tracking details + # including internal state, flags, etc. + # This output is experimental, meant for debugging and subject to + # change in both config and output without any notice. + #- stream: + # all: false # log all TCP packets + # event-set: false # log packets that have a decoder/stream event + # state-update: false # log packets triggering a TCP state update + # spurious-retransmission: false # log spurious retransmission packets + + # 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 # enable 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 + #extended: yes # Log extended information like fingerprint + #custom: yes # enabled the custom logging format (defined by customformat) + #customformat: "%{%D-%H:%M:%S}t.%z %a:%p -> %A:%P %v %n %d %D" + #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram' + # output TLS transaction where the session is resumed using a + # session id + #session-resumption: no + + # output module to store certificates chain to disk + - tls-store: + enabled: no + #certs-log-dir: certs # directory to store the certificates files + + # Packet log... log packets in pcap format. 3 modes of operation: "normal" + # "multi" and "sguil". + # + # In normal mode a pcap file "filename" is created in the default-log-dir, + # or as specified by "dir". + # In multi mode, a file is created per thread. This will perform much + # better, but will create multiple files where 'normal' would create one. + # In multi mode the filename takes a few special variables: + # - %n -- thread number + # - %i -- thread id + # - %t -- timestamp (secs or secs.usecs based on 'ts-format' + # E.g. filename: pcap.%n.%t + # + # Note that it's possible to use directories, but the directories are not + # created by Suricata. E.g. filename: pcaps/%n/log.%s will log into the + # per thread directory. + # + # Also note that the limit and max-files settings are enforced per thread. + # So the size limit when using 8 threads with 1000mb files and 2000 files + # is: 8*1000*2000 ~ 16TiB. + # + # In Sguil mode "dir" indicates the base directory. In this base dir the + # pcaps are created in the 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, ring buffer mode is enabled. Will keep maximum of + # "max-files" of size "limit" + max-files: 2000 + + # Compression algorithm for pcap files. Possible values: none, lz4. + # Enabling compression is incompatible with the sguil mode. Note also + # that on Windows, enabling compression will *increase* disk I/O. + compression: none + + # Further options for lz4 compression. The compression level can be set + # to a value between 0 and 16, where higher values result in higher + # compression. + #lz4-checksum: no + #lz4-level: 0 + + mode: normal # normal, multi or sguil. + + # Directory to place pcap files. If not provided the default log + # directory will be used. Required for "sguil" mode. + #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 + honor-pass-rules: no # If set to "yes", flows in which a pass rule matched will stop being logged. + # Use "all" to log all packets or use "alerts" to log only alerted packets and flows or "tag" + # to log only flow tagged via the "tag" keyword + #conditional: all + + # a full alert 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' + + # Stats.log contains data from various counters of the Suricata engine. + - stats: + enabled: yes + filename: stats.log + append: yes # append to file (yes) or overwrite it (no) + totals: yes # stats for all threads merged together + threads: no # per thread stats + #null-values: yes # print counters that have value 0. Default: no + + # a line based alerts log similar to fast.log into syslog + - syslog: + enabled: no + # reported identity to syslog. If omitted the program name (usually + # suricata) will be used. + #identity: "suricata" + facility: local5 + #level: Info ## possible levels: Emergency, Alert, Critical, + ## Error, Warning, Notice, Info, Debug + + # Output module for storing files on disk. Files are stored in + # directory names consisting of the first 2 characters of the + # SHA256 of the file. Each file is given its SHA256 as a filename. + # + # When a duplicate file is found, the timestamps on the existing file + # are updated. + # + # Unlike the older filestore, metadata is not written by default + # as each file should already have a "fileinfo" record in the + # eve-log. If write-fileinfo is set to yes, then each file will have + # one more associated .json files that consist of the fileinfo + # record. A fileinfo file will be written for each occurrence of the + # file seen using a filename suffix to ensure uniqueness. + # + # To prune the filestore directory see the "suricatactl filestore + # prune" command which can delete files over a certain age. + - file-store: + version: 2 + enabled: no + + # Set the directory for the filestore. Relative pathnames + # are contained within the "default-log-dir". + #dir: filestore + + # Write out a fileinfo record for each occurrence of a file. + # Disabled by default as each occurrence is already logged + # as a fileinfo record to the main eve-log. + #write-fileinfo: yes + + # Force storing of all files. Default: no. + #force-filestore: yes + + # Override the global stream-depth for sessions in which we want + # to perform file extraction. Set to 0 for unlimited; otherwise, + # must be greater than the global stream-depth value to be used. + #stream-depth: 0 + + # Uncomment the following variable to define how many files can + # remain open for filestore by Suricata. Default value is 0 which + # means files get closed after each write to the file. + #max-open-files: 1000 + + # Force logging of checksums: available hash functions are md5, + # sha1 and sha256. Note that SHA256 is automatically forced by + # the use of this output module as it uses the SHA256 as the + # file naming scheme. + #force-hash: [sha1, md5] + # NOTE: X-Forwarded configuration is ignored if write-fileinfo is disabled + # HTTP X-Forwarded-For support by adding an extra field or overwriting + # the source or destination IP address (depending on flow direction) + # with the one reported in the X-Forwarded-For HTTP header. This is + # helpful when reviewing alerts for traffic that is being reverse + # or forward proxied. + xff: + enabled: no + # Two operation modes are available, "extra-data" and "overwrite". + mode: extra-data + # Two proxy deployments are supported, "reverse" and "forward". In + # a "reverse" deployment the IP address used is the last one, in a + # "forward" deployment the first IP address is used. + deployment: reverse + # Header name where the actual IP address will be reported. If more + # than one IP address is present, the last IP address will be the + # one taken into consideration. + header: X-Forwarded-For + + # Log TCP data after stream normalization + # Two types: file or dir: + # - file logs into a single logfile. + # - dir creates 2 files per TCP session and stores the raw TCP + # data into them. + # Use 'both' to enable both file and dir modes. + # + # Note: limited by "stream.reassembly.depth" + - tcp-data: + enabled: no + type: file + filename: tcp-data.log + + # Log HTTP body data after normalization, de-chunking and unzipping. + # Two types: file or dir. + # - file logs into a single logfile. + # - dir creates 2 files per HTTP session and stores the + # normalized data into them. + # Use 'both' to enable both file and dir modes. + # + # Note: limited by the body limit settings + - http-body-data: + enabled: no + type: file + filename: http-data.log + + # Lua Output Support - execute lua script to generate alert and event + # output. + # Documented at: + # https://docs.suricata.io/en/latest/output/lua-output.html + - lua: + enabled: no + #scripts-dir: /etc/suricata/lua-output/ + scripts: + # - script1.lua + +# Logging configuration. This is not about logging IDS alerts/events, but +# output about what Suricata is doing, like startup messages, errors, etc. +logging: + # The default log level: can be overridden in an output section. + # Note that debug level logging will only be emitted if Suricata was + # compiled with the --enable-debug configure option. + # + # This value is overridden by the SC_LOG_LEVEL env var. + default-log-level: notice + + # The default output format. Optional parameter, should default to + # something reasonable if not provided. Can be overridden in an + # output section. You can leave this out to get the default. + # + # This console log format value can be overridden by the SC_LOG_FORMAT env var. + #default-log-format: "%D: %S: %M" + # + # For the pre-7.0 log format use: + #default-log-format: "[%i] %t [%S] - (%f:%l) <%d> (%n) -- " + + # A regex to filter output. Can be overridden in an output section. + # Defaults to empty (no filter). + # + # This value is overridden by the SC_LOG_OP_FILTER env var. + default-output-filter: + + # Requires libunwind to be available when Suricata is configured and built. + # If a signal unexpectedly terminates Suricata, displays a brief diagnostic + # message with the offending stacktrace if enabled. + #stacktrace-on-signal: on + + # Define your logging outputs. If none are defined, or they are all + # disabled you will get the default: console output. + outputs: + - console: + enabled: yes + # type: json + - file: + enabled: yes + level: info + filename: suricata.log + # format: "[%i - %m] %z %d: %S: %M" + # type: json + - syslog: + enabled: no + facility: local5 + format: "[%i] <%d> -- " + # type: json + + +## +## Step 3: Configure common capture settings +## +## See "Advanced Capture Options" below for more options, including Netmap +## and PF_RING. +## + +# Linux high speed capture support +af-packet: + - interface: eth0 + # Number of receive threads. "auto" uses the number of cores + #threads: auto + # Default clusterid. AF_PACKET will load balance packets based on flow. + cluster-id: 99 + # Default AF_PACKET cluster type. AF_PACKET can load balance per flow or per hash. + # This is only supported for Linux kernel > 3.1 + # possible value are: + # * cluster_flow: all packets of a given flow are sent to the same socket + # * cluster_cpu: all packets treated in kernel by a CPU are sent to the same socket + # * cluster_qm: all packets linked by network card to a RSS queue are sent to the same + # socket. Requires at least Linux 3.14. + # * cluster_ebpf: eBPF file load balancing. See doc/userguide/capture-hardware/ebpf-xdp.rst for + # more info. + # Recommended modes are cluster_flow on most boxes and cluster_cpu or cluster_qm on system + # with capture card using RSS (requires cpu affinity tuning and system IRQ tuning) + # cluster_rollover has been deprecated; if used, it'll be replaced with cluster_flow. + cluster-type: cluster_flow + # In some fragmentation cases, the hash can not be computed. If "defrag" is set + # to yes, the kernel will do the needed defragmentation before sending the packets. + defrag: yes + # To use the ring feature of AF_PACKET, set 'use-mmap' to yes + #use-mmap: yes + # Lock memory map to avoid it being swapped. Be careful that over + # subscribing could lock your system + #mmap-locked: yes + # Use tpacket_v3 capture mode, only active if use-mmap is true + # Don't use it in IPS or TAP mode as it causes severe latency + #tpacket-v3: yes + # Ring size will be computed with respect to "max-pending-packets" and number + # of threads. You can set manually the ring size in number of packets by setting + # the following value. If you are using flow "cluster-type" and have really network + # intensive single-flow you may want to set the "ring-size" independently of the number + # of threads: + #ring-size: 2048 + # Block size is used by tpacket_v3 only. It should set to a value high enough to contain + # a decent number of packets. Size is in bytes so please consider your MTU. It should be + # a power of 2 and it must be multiple of page size (usually 4096). + #block-size: 32768 + # tpacket_v3 block timeout: an open block is passed to userspace if it is not + # filled after block-timeout milliseconds. + #block-timeout: 10 + # On busy systems, set it to yes to help recover from a packet drop + # phase. This will result in some packets (at max a ring flush) not being inspected. + #use-emergency-flush: yes + # recv buffer size, increased value could improve performance + # buffer-size: 32768 + # Set to yes to disable promiscuous mode + # disable-promisc: no + # Choose checksum verification mode for the interface. At the moment + # of the capture, some packets may have an invalid checksum due to + # the checksum computation being offloaded to the network card. + # Possible values are: + # - kernel: use indication sent by kernel for each packet (default) + # - yes: checksum validation is forced + # - no: checksum validation is disabled + # - auto: Suricata uses a statistical approach to detect when + # checksum off-loading is used. + # Warning: 'capture.checksum-validation' must be set to yes to have any validation + #checksum-checks: kernel + # BPF filter to apply to this interface. The pcap filter syntax applies here. + #bpf-filter: port 80 or udp + # You can use the following variables to activate AF_PACKET tap or IPS mode. + # If copy-mode is set to ips or tap, the traffic coming to the current + # interface will be copied to the copy-iface interface. If 'tap' is set, the + # copy is complete. If 'ips' is set, the packet matching a 'drop' action + # will not be copied. + #copy-mode: ips + #copy-iface: eth1 + # For eBPF and XDP setup including bypass, filter and load balancing, please + # see doc/userguide/capture-hardware/ebpf-xdp.rst for more info. + + # Put default values here. These will be used for an interface that is not + # in the list above. + - interface: default + #threads: auto + #use-mmap: no + #tpacket-v3: yes + +# Linux high speed af-xdp capture support +af-xdp: + - interface: default + # Number of receive threads. "auto" uses least between the number + # of cores and RX queues + #threads: auto + #disable-promisc: false + # XDP_DRV mode can be chosen when the driver supports XDP + # XDP_SKB mode can be chosen when the driver does not support XDP + # Possible values are: + # - drv: enable XDP_DRV mode + # - skb: enable XDP_SKB mode + # - none: disable (kernel in charge of applying mode) + #force-xdp-mode: none + # During socket binding the kernel will attempt zero-copy, if this + # fails it will fallback to copy. If this fails, the bind fails. + # The bind can be explicitly configured using the option below. + # If configured, the bind will fail if not successful (no fallback). + # Possible values are: + # - zero: enable zero-copy mode + # - copy: enable copy mode + # - none: disable (kernel in charge of applying mode) + #force-bind-mode: none + # Memory alignment mode can vary between two modes, aligned and + # unaligned chunk modes. By default, aligned chunk mode is selected. + # select 'yes' to enable unaligned chunk mode. + # Note: unaligned chunk mode uses hugepages, so the required number + # of pages must be available. + #mem-unaligned: no + # The following options configure the prefer-busy-polling socket + # options. The polling time and budget can be edited here. + # Possible values are: + # - yes: enable (default) + # - no: disable + #enable-busy-poll: yes + # busy-poll-time sets the approximate time in microseconds to busy + # poll on a blocking receive when there is no data. + #busy-poll-time: 20 + # busy-poll-budget is the budget allowed for packet batches + #busy-poll-budget: 64 + # These two tunables are used to configure the Linux OS's NAPI + # context. Their purpose is to defer enabling of interrupts and + # instead schedule the NAPI context from a watchdog timer. + # The softirq NAPI will exit early, allowing busy polling to be + # performed. Successfully setting these tunables alongside busy-polling + # should improve performance. + # Defaults are: + #gro-flush-timeout: 2000000 + #napi-defer-hard-irq: 2 + +dpdk: + eal-params: + proc-type: primary + + # DPDK capture support + # RX queues (and TX queues in IPS mode) are assigned to cores in 1:1 ratio + interfaces: + - interface: 0000:3b:00.0 # PCIe address of the NIC port + # Threading: possible values are either "auto" or number of threads + # - auto takes all cores + # in IPS mode it is required to specify the number of cores and the numbers on both interfaces must match + threads: auto + promisc: true # promiscuous mode - capture all packets + multicast: true # enables also detection on multicast packets + checksum-checks: true # if Suricata should validate checksums + checksum-checks-offload: true # if possible offload checksum validation to the NIC (saves Suricata resources) + mtu: 1500 # Set MTU of the device in bytes + # rss-hash-functions: 0x0 # advanced configuration option, use only if you use untested NIC card and experience RSS warnings, + # For `rss-hash-functions` use hexadecimal 0x01ab format to specify RSS hash function flags - DumpRssFlags can help (you can see output if you use -vvv option during Suri startup) + # setting auto to rss_hf sets the default RSS hash functions (based on IP addresses) + + # To approximately calculate required amount of space (in bytes) for interface's mempool: mempool-size * mtu + # Make sure you have enough allocated hugepages. + # The optimum size for the packet memory pool (in terms of memory usage) is power of two minus one: n = (2^q - 1) + mempool-size: 65535 # The number of elements in the mbuf pool + + # Mempool cache size must be lower or equal to: + # - RTE_MEMPOOL_CACHE_MAX_SIZE (by default 512) and + # - "mempool-size / 1.5" + # It is advised to choose cache_size to have "mempool-size modulo cache_size == 0". + # If this is not the case, some elements will always stay in the pool and will never be used. + # The cache can be disabled if the cache_size argument is set to 0, can be useful to avoid losing objects in cache + # If the value is empty or set to "auto", Suricata will attempt to set cache size of the mempool to a value + # that matches the previously mentioned recommendations + mempool-cache-size: 257 + rx-descriptors: 1024 + tx-descriptors: 1024 + # + # IPS mode for Suricata works in 3 modes - none, tap, ips + # - none: IDS mode only - disables IPS functionality (does not further forward packets) + # - tap: forwards all packets and generates alerts (omits DROP action) This is not DPDK TAP + # - ips: the same as tap mode but it also drops packets that are flagged by rules to be dropped + copy-mode: none + copy-iface: none # or PCIe address of the second interface + + - interface: default + threads: auto + promisc: true + multicast: true + checksum-checks: true + checksum-checks-offload: true + mtu: 1500 + rss-hash-functions: auto + mempool-size: 65535 + mempool-cache-size: 257 + rx-descriptors: 1024 + tx-descriptors: 1024 + copy-mode: none + copy-iface: none + + +# Cross platform libpcap capture support +pcap: + - interface: eth0 + # On Linux, pcap will try to use mmap'ed capture and will use "buffer-size" + # as total memory used by the ring. So set this to something bigger + # than 1% of your bandwidth. + #buffer-size: 16777216 + #bpf-filter: "tcp and port 25" + # Choose checksum verification mode for the interface. At the moment + # of the capture, some packets may have an invalid checksum due to + # the checksum computation being offloaded to the network card. + # Possible values are: + # - yes: checksum validation is forced + # - no: checksum validation is disabled + # - auto: Suricata uses a statistical approach to detect when + # checksum off-loading is used. (default) + # Warning: 'capture.checksum-validation' must be set to yes to have any validation + #checksum-checks: auto + # With some accelerator cards using a modified libpcap (like Myricom), you + # may want to have the same number of capture threads as the number of capture + # rings. In this case, set up the threads variable to N to start N threads + # listening on the same interface. + #threads: 16 + # set to no to disable promiscuous mode: + #promisc: no + # set snaplen, if not set it defaults to MTU if MTU can be known + # via ioctl call and to full capture if not. + #snaplen: 1518 + # Put default values here + - interface: default + #checksum-checks: auto + +# Settings for reading pcap files +pcap-file: + # Possible values are: + # - yes: checksum validation is forced + # - no: checksum validation is disabled + # - auto: Suricata uses a statistical approach to detect when + # checksum off-loading is used. (default) + # Warning: 'checksum-validation' must be set to yes to have checksum tested + checksum-checks: auto + +# See "Advanced Capture Options" below for more options, including Netmap +# and PF_RING. + + +## +## Step 4: App Layer Protocol configuration +## + +# Configure the app-layer parsers. +# +# The error-policy setting applies to all app-layer parsers. Values can be +# "drop-flow", "pass-flow", "bypass", "drop-packet", "pass-packet", "reject" or +# "ignore" (the default). +# +# The protocol's section details each protocol. +# +# The option "enabled" takes 3 values - "yes", "no", "detection-only". +# "yes" enables both detection and the parser, "no" disables both, and +# "detection-only" enables protocol detection only (parser disabled). +app-layer: + # error-policy: ignore + protocols: + telnet: + enabled: yes + rfb: + enabled: yes + detection-ports: + dp: 5900, 5901, 5902, 5903, 5904, 5905, 5906, 5907, 5908, 5909 + mqtt: + enabled: yes + # max-msg-length: 1mb + # subscribe-topic-match-limit: 100 + # unsubscribe-topic-match-limit: 100 + # Maximum number of live MQTT transactions per flow + # max-tx: 4096 + krb5: + enabled: yes + bittorrent-dht: + enabled: yes + snmp: + enabled: yes + ike: + enabled: yes + tls: + enabled: yes + detection-ports: + dp: 443 + + # Generate JA3 fingerprint from client hello. If not specified it + # will be disabled by default, but enabled if rules require it. + #ja3-fingerprints: auto + + # What to do when the encrypted communications start: + # - default: keep tracking TLS session, check for protocol anomalies, + # inspect tls_* keywords. Disables inspection of unmodified + # 'content' signatures. + # - bypass: stop processing this flow as much as possible. No further + # TLS parsing and inspection. Offload flow bypass to kernel + # or hardware if possible. + # - full: keep tracking and inspection as normal. Unmodified content + # keyword signatures are inspected as well. + # + # For best performance, select 'bypass'. + # + #encryption-handling: default + + pgsql: + enabled: no + # Stream reassembly size for PostgreSQL. By default, track it completely. + stream-depth: 0 + # Maximum number of live PostgreSQL transactions per flow + # max-tx: 1024 + dcerpc: + enabled: yes + # Maximum number of live DCERPC transactions per flow + # max-tx: 1024 + ftp: + enabled: yes + # memcap: 64mb + rdp: + #enabled: yes + ssh: + enabled: yes + #hassh: yes + http2: + enabled: yes + # Maximum number of live HTTP2 streams in a flow + #max-streams: 4096 + # Maximum headers table size + #max-table-size: 65536 + # Maximum reassembly size for header + continuation frames + #max-reassembly-size: 102400 + smtp: + enabled: yes + raw-extraction: no + # Maximum number of live SMTP transactions per flow + # max-tx: 256 + # Configure SMTP-MIME Decoder + mime: + # Decode MIME messages from SMTP transactions + # (may be resource intensive) + # This field supersedes all others because it turns the entire + # process on or off + decode-mime: yes + + # Decode MIME entity bodies (ie. Base64, quoted-printable, etc.) + decode-base64: yes + decode-quoted-printable: yes + + # Maximum bytes per header data value stored in the data structure + # (default is 2000) + header-value-depth: 2000 + + # Extract URLs and save in state data structure + extract-urls: yes + # Scheme of URLs to extract + # (default is [http]) + #extract-urls-schemes: [http, https, ftp, mailto] + # Log the scheme of URLs that are extracted + # (default is no) + #log-url-scheme: yes + # Set to yes to compute the md5 of the mail body. You will then + # be able to journalize it. + body-md5: no + # Configure inspected-tracker for file_data keyword + inspected-tracker: + content-limit: 100000 + content-inspect-min-size: 32768 + content-inspect-window: 4096 + imap: + enabled: detection-only + smb: + enabled: yes + detection-ports: + dp: 139, 445 + # Maximum number of live SMB transactions per flow + # max-tx: 1024 + + # Stream reassembly size for SMB streams. By default track it completely. + #stream-depth: 0 + + nfs: + enabled: yes + # max-tx: 1024 + tftp: + enabled: yes + dns: + tcp: + enabled: yes + detection-ports: + dp: 53 + udp: + enabled: yes + detection-ports: + dp: 53 + http: + enabled: yes + + # Byte Range Containers default settings + # byterange: + # memcap: 100mb + # timeout: 60 + + # memcap: Maximum memory capacity for HTTP + # Default is unlimited, values can be 64mb, e.g. + + # default-config: Used when no server-config matches + # personality: List of personalities used by default + # request-body-limit: Limit reassembly of request body for inspection + # by http_client_body & pcre /P option. + # response-body-limit: Limit reassembly of response body for inspection + # by file_data, http_server_body & pcre /Q option. + # + # For advanced options, see the user guide + + + # server-config: List of server configurations to use if address matches + # address: List of IP addresses or networks for this block + # personality: List of personalities used by this block + # + # Then, all the fields from default-config can be overloaded + # + # Currently Available Personalities: + # Minimal, Generic, IDS (default), IIS_4_0, IIS_5_0, IIS_5_1, IIS_6_0, + # IIS_7_0, IIS_7_5, Apache_2 + libhtp: + default-config: + personality: IDS + + # Can be specified in kb, mb, gb. Just a number indicates + # it's in bytes. + request-body-limit: 100kb + response-body-limit: 100kb + + # inspection limits + request-body-minimal-inspect-size: 32kb + request-body-inspect-window: 4kb + response-body-minimal-inspect-size: 40kb + response-body-inspect-window: 16kb + + # response body decompression (0 disables) + response-body-decompress-layer-limit: 2 + + # auto will use http-body-inline mode in IPS mode, yes or no set it statically + http-body-inline: auto + + # Decompress SWF files. Disabled by default. + # Two types: 'deflate', 'lzma', 'both' will decompress deflate and lzma + # compress-depth: + # Specifies the maximum amount of data to decompress, + # set 0 for unlimited. + # decompress-depth: + # Specifies the maximum amount of decompressed data to obtain, + # set 0 for unlimited. + swf-decompression: + enabled: no + type: both + compress-depth: 100kb + decompress-depth: 100kb + + # Use a random value for inspection sizes around the specified value. + # This lowers the risk of some evasion techniques but could lead + # to detection change between runs. It is set to 'yes' by default. + #randomize-inspection-sizes: yes + # If "randomize-inspection-sizes" is active, the value of various + # inspection size will be chosen from the [1 - range%, 1 + range%] + # range + # Default value of "randomize-inspection-range" is 10. + #randomize-inspection-range: 10 + + # decoding + double-decode-path: no + double-decode-query: no + + # Can enable LZMA decompression + #lzma-enabled: false + # Memory limit usage for LZMA decompression dictionary + # Data is decompressed until dictionary reaches this size + #lzma-memlimit: 1mb + # Maximum decompressed size with a compression ratio + # above 2048 (only LZMA can reach this ratio, deflate cannot) + #compression-bomb-limit: 1mb + # Maximum time spent decompressing a single transaction in usec + #decompression-time-limit: 100000 + # Maximum number of live transactions per flow + #max-tx: 512 + + server-config: + + #- apache: + # address: [192.168.1.0/24, 127.0.0.0/8, "::1"] + # personality: Apache_2 + # # Can be specified in kb, mb, gb. Just a number indicates + # # it's in bytes. + # request-body-limit: 4096 + # response-body-limit: 4096 + # double-decode-path: no + # double-decode-query: no + + #- iis7: + # address: + # - 192.168.0.0/24 + # - 192.168.10.0/24 + # personality: IIS_7_0 + # # Can be specified in kb, mb, gb. Just a number indicates + # # it's in bytes. + # request-body-limit: 4096 + # response-body-limit: 4096 + # double-decode-path: no + # double-decode-query: no + + # Note: Modbus probe parser is minimalist due to the limited usage in the field. + # Only Modbus message length (greater than Modbus header length) + # and protocol ID (equal to 0) are checked in probing parser + # It is important to enable detection port and define Modbus port + # to avoid false positives + modbus: + # How many unanswered Modbus requests are considered a flood. + # If the limit is reached, the app-layer-event:modbus.flooded; will match. + #request-flood: 500 + + enabled: no + detection-ports: + dp: 502 + # According to MODBUS Messaging on TCP/IP Implementation Guide V1.0b, it + # is recommended to keep the TCP connection opened with a remote device + # and not to open and close it for each MODBUS/TCP transaction. In that + # case, it is important to set the depth of the stream reassembling as + # unlimited (stream.reassembly.depth: 0) + + # Stream reassembly size for modbus. By default track it completely. + stream-depth: 0 + + # DNP3 + dnp3: + enabled: no + detection-ports: + dp: 20000 + + # SCADA EtherNet/IP and CIP protocol support + enip: + enabled: no + detection-ports: + dp: 44818 + sp: 44818 + + ntp: + enabled: yes + + quic: + enabled: yes + + dhcp: + enabled: yes + + sip: + #enabled: yes + +# Limit for the maximum number of asn1 frames to decode (default 256) +asn1-max-frames: 256 + +# Datasets default settings +datasets: + # Default fallback memcap and hashsize values for datasets in case these + # were not explicitly defined. + defaults: + #memcap: 100mb + #hashsize: 2048 + + rules: + # Set to true to allow absolute filenames and filenames that use + # ".." components to reference parent directories in rules that specify + # their filenames. + #allow-absolute-filenames: false + + # Allow datasets in rules write access for "save" and + # "state". This is enabled by default, however write access is + # limited to the data directory. + #allow-write: true + +############################################################################## +## +## Advanced settings below +## +############################################################################## + +## +## Run Options +## + +# Run Suricata with a specific user-id and group-id: +#run-as: +# user: suri +# group: suri + +security: + # if true, prevents process creation from Suricata by calling + # setrlimit(RLIMIT_NPROC, 0) + limit-noproc: true + # Use landlock security module under Linux + landlock: + enabled: no + directories: + #write: + # - @e_rundir@ + # /usr and /etc folders are added to read list to allow + # file magic to be used. + read: + - /usr/ + - /etc/ + - @e_sysconfdir@ + + lua: + # Allow Lua rules. Disabled by default. + #allow-rules: false + +# Some logging modules will use that name in event as identifier. The default +# value is the hostname +#sensor-name: suricata + +# Default location of the pid file. The pid file is only used in +# daemon mode (start Suricata with -D). If not running in daemon mode +# the --pidfile command line option must be used to create a pid file. +#pid-file: @e_rundir@suricata.pid + +# Daemon working directory +# Suricata will change directory to this one if provided +# Default: "/" +#daemon-directory: "/" + +# Umask. +# Suricata will use this umask if it is provided. By default it will use the +# umask passed on by the shell. +#umask: 022 + +# Suricata core dump configuration. Limits the size of the core dump file to +# approximately max-dump. The actual core dump size will be a multiple of the +# page size. Core dumps that would be larger than max-dump are truncated. On +# Linux, the actual core dump size may be a few pages larger than max-dump. +# Setting max-dump to 0 disables core dumping. +# Setting max-dump to 'unlimited' will give the full core dump file. +# On 32-bit Linux, a max-dump value >= ULONG_MAX may cause the core dump size +# to be 'unlimited'. + +coredump: + max-dump: unlimited + +# If the Suricata box is a router for the sniffed networks, set it to 'router'. If +# it is a pure sniffing setup, set it to 'sniffer-only'. +# If set to auto, the variable is internally switched to 'router' in IPS mode +# and 'sniffer-only' in IDS mode. +# This feature is currently only used by the reject* keywords. +host-mode: auto + +# Number of packets preallocated per thread. The default is 1024. A higher number +# will make sure each CPU will be more easily kept busy, but may negatively +# impact caching. +#max-pending-packets: 1024 + +# Runmode the engine should use. Please check --list-runmodes to get the available +# runmodes for each packet acquisition method. Default depends on selected capture +# method. 'workers' generally gives best performance. +#runmode: autofp + +# Specifies the kind of flow load balancer used by the flow pinned autofp mode. +# +# Supported schedulers are: +# +# hash - Flow assigned to threads using the 5-7 tuple hash. +# ippair - Flow assigned to threads using addresses only. +# ftp-hash - Flow assigned to threads using the hash, except for FTP, so that +# ftp-data flows will be handled by the same thread +# +#autofp-scheduler: hash + +# Preallocated size for each packet. Default is 1514 which is the classical +# size for pcap on Ethernet. You should adjust this value to the highest +# packet size (MTU + hardware header) on your system. +#default-packet-size: 1514 + +# Unix command socket that can be used to pass commands to Suricata. +# An external tool can then connect to get information from Suricata +# or trigger some modifications of the engine. Set enabled to yes +# to activate the feature. In auto mode, the feature will only be +# activated in live capture mode. You can use the filename variable to set +# the file name of the socket. +unix-command: + enabled: auto + #filename: custom.socket + +# Magic file. The extension .mgc is added to the value here. +#magic-file: /usr/share/file/magic +@e_magic_file_comment@magic-file: @e_magic_file@ + +# GeoIP2 database file. Specify path and filename of GeoIP2 database +# if using rules with "geoip" rule option. +#geoip-database: /usr/local/share/GeoLite2/GeoLite2-Country.mmdb + +legacy: + uricontent: enabled + +## +## Detection settings +## + +# Set the order of alerts based on actions +# The default order is pass, drop, reject, alert +# action-order: +# - pass +# - drop +# - reject +# - alert + +# Define maximum number of possible alerts that can be triggered for the same +# packet. Default is 15 +#packet-alert-max: 15 + +# Exception Policies +# +# Define a common behavior for all exception policies. +# In IPS mode, the default is drop-flow. For cases when that's not possible, the +# engine will fall to drop-packet. To fallback to old behavior (setting each of +# them individually, or ignoring all), set this to ignore. +# All values available for exception policies can be used, and there is one +# extra option: auto - which means drop-flow or drop-packet (as explained above) +# in IPS mode, and ignore in IDS mode. Exception policy values are: drop-packet, +# drop-flow, reject, bypass, pass-packet, pass-flow, ignore (disable). +exception-policy: auto + +# IP Reputation +#reputation-categories-file: @e_sysconfdir@iprep/categories.txt +#default-reputation-path: @e_sysconfdir@iprep +#reputation-files: +# - reputation.list + +# When run with the option --engine-analysis, the engine will read each of +# the parameters below, and print reports for each of the enabled sections +# and exit. The reports are printed to a file in the default log dir +# given by the parameter "default-log-dir", with engine reporting +# subsection below printing reports in its own report file. +engine-analysis: + # enables printing reports for fast-pattern for every rule. + rules-fast-pattern: yes + # enables printing reports for each rule + rules: yes + +#recursion and match limits for PCRE where supported +pcre: + match-limit: 3500 + match-limit-recursion: 1500 + +## +## Advanced Traffic Tracking and Reconstruction Settings +## + +# Host specific policies for defragmentation and TCP stream +# reassembly. The host OS lookup is done using a radix tree, just +# like a routing table so the most specific entry matches. +host-os-policy: + # Make the default policy windows. + windows: [0.0.0.0/0] + bsd: [] + bsd-right: [] + old-linux: [] + linux: [] + old-solaris: [] + solaris: [] + hpux10: [] + hpux11: [] + irix: [] + macos: [] + vista: [] + windows2k3: [] + +# Defrag settings: + +# The memcap-policy value can be "drop-packet", "pass-packet", "reject" or +# "ignore" (which is the default). +defrag: + memcap: 32mb + # memcap-policy: ignore + hash-size: 65536 + trackers: 65535 # number of defragmented flows to follow + max-frags: 65535 # number of fragments to keep (higher than trackers) + prealloc: yes + timeout: 60 + +# Enable defrag per host settings +# host-config: +# +# - dmz: +# timeout: 30 +# address: [192.168.1.0/24, 127.0.0.0/8, 1.1.1.0/24, 2.2.2.0/24, "1.1.1.1", "2.2.2.2", "::1"] +# +# - lan: +# timeout: 45 +# address: +# - 192.168.0.0/24 +# - 192.168.10.0/24 +# - 172.16.14.0/24 + +# Flow settings: +# By default, the reserved memory (memcap) for flows is 32MB. This is the limit +# for flow allocation inside the engine. You can change this value to allow +# more memory usage for flows. +# The hash-size determines the size of the hash used to identify flows inside +# the engine, and by default the value is 65536. +# At startup, the engine can preallocate a number of flows, to get better +# performance. The number of flows preallocated is 10000 by default. +# emergency-recovery is the percentage of flows that the engine needs to +# prune before clearing the emergency state. The emergency state is activated +# when the memcap limit is reached, allowing new flows to be created, but +# pruning them with the emergency timeouts (they are defined below). +# If the memcap is reached, the engine will try to prune flows +# with the default timeouts. If it doesn't find a flow to prune, it will set +# the emergency bit and it will try again with more aggressive timeouts. +# If that doesn't work, then it will try to kill the oldest flows using +# last time seen flows. +# The memcap can be specified in kb, mb, gb. Just a number indicates it's +# in bytes. +# The memcap-policy can be "drop-packet", "pass-packet", "reject" or "ignore" +# (which is the default). + +flow: + memcap: 128mb + #memcap-policy: ignore + hash-size: 65536 + prealloc: 10000 + emergency-recovery: 30 + #managers: 1 # default to one flow manager + #recyclers: 1 # default to one flow recycler thread + +# This option controls the use of VLAN ids in the flow (and defrag) +# hashing. Normally this should be enabled, but in some (broken) +# setups where both sides of a flow are not tagged with the same VLAN +# tag, we can ignore the VLAN id's in the flow hashing. +vlan: + use-for-tracking: true + +# This option controls the use of livedev ids in the flow (and defrag) +# hashing. This is enabled by default and should be disabled if +# multiple live devices are used to capture traffic from the same network +livedev: + use-for-tracking: true + +# Specific timeouts for flows. Here you can specify the timeouts that the +# active flows will wait to transit from the current state to another, on each +# protocol. The value of "new" determines the seconds to wait after a handshake or +# stream startup before the engine frees the data of that flow it doesn't +# change the state to established (usually if we don't receive more packets +# of that flow). The value of "established" is the amount of +# seconds that the engine will wait to free the flow if that time elapses +# without receiving new packets or closing the connection. "closed" is the +# amount of time to wait after a flow is closed (usually zero). "bypassed" +# timeout controls locally bypassed flows. For these flows we don't do any other +# tracking. If no packets have been seen after this timeout, the flow is discarded. +# +# There's an emergency mode that will become active under attack circumstances, +# making the engine to check flow status faster. This configuration variables +# use the prefix "emergency-" and work similar as the normal ones. +# Some timeouts doesn't apply to all the protocols, like "closed", for udp and +# icmp. + +flow-timeouts: + + default: + new: 30 + established: 300 + closed: 0 + bypassed: 100 + emergency-new: 10 + emergency-established: 100 + emergency-closed: 0 + emergency-bypassed: 50 + tcp: + new: 60 + established: 600 + closed: 60 + bypassed: 100 + emergency-new: 5 + emergency-established: 100 + emergency-closed: 10 + emergency-bypassed: 50 + udp: + new: 30 + established: 300 + bypassed: 100 + emergency-new: 10 + emergency-established: 100 + emergency-bypassed: 50 + icmp: + new: 30 + established: 300 + bypassed: 100 + emergency-new: 10 + emergency-established: 100 + emergency-bypassed: 50 + +# Stream engine settings. Here the TCP stream tracking and reassembly +# engine is configured. +# +# stream: +# memcap: 64mb # Can be specified in kb, mb, gb. Just a +# # number indicates it's in bytes. +# memcap-policy: ignore # Can be "drop-flow", "pass-flow", "bypass", +# # "drop-packet", "pass-packet", "reject" or +# # "ignore" default is "ignore" +# checksum-validation: yes # To validate the checksum of received +# # packet. If csum validation is specified as +# # "yes", then packets with invalid csum values will not +# # be processed by the engine stream/app layer. +# # Warning: locally generated traffic can be +# # generated without checksum due to hardware offload +# # of checksum. You can control the handling of checksum +# # on a per-interface basis via the 'checksum-checks' +# # option +# prealloc-sessions: 2048 # 2k sessions prealloc'd per stream thread +# midstream: false # don't allow midstream session pickups +# midstream-policy: ignore # Can be "drop-flow", "pass-flow", "bypass", +# # "drop-packet", "pass-packet", "reject" or +# # "ignore" default is "ignore" +# async-oneside: false # don't enable async stream handling +# inline: no # stream inline mode +# drop-invalid: yes # in inline mode, drop packets that are invalid with regards to streaming engine +# max-syn-queued: 10 # Max different SYNs to queue +# max-synack-queued: 5 # Max different SYN/ACKs to queue +# bypass: no # Bypass packets when stream.reassembly.depth is reached. +# # Warning: first side to reach this triggers +# # the bypass. +# liberal-timestamps: false # Treat all timestamps as if the Linux policy applies. This +# # means it's slightly more permissive. Enabled by default. +# +# reassembly: +# memcap: 256mb # Can be specified in kb, mb, gb. Just a number +# # indicates it's in bytes. +# memcap-policy: ignore # Can be "drop-flow", "pass-flow", "bypass", +# # "drop-packet", "pass-packet", "reject" or +# # "ignore" default is "ignore" +# depth: 1mb # Can be specified in kb, mb, gb. Just a number +# # indicates it's in bytes. +# toserver-chunk-size: 2560 # inspect raw stream in chunks of at least +# # this size. Can be specified in kb, mb, +# # gb. Just a number indicates it's in bytes. +# toclient-chunk-size: 2560 # inspect raw stream in chunks of at least +# # this size. Can be specified in kb, mb, +# # gb. Just a number indicates it's in bytes. +# randomize-chunk-size: yes # Take a random value for chunk size around the specified value. +# # This lowers the risk of some evasion techniques but could lead +# # to detection change between runs. It is set to 'yes' by default. +# randomize-chunk-range: 10 # If randomize-chunk-size is active, the value of chunk-size is +# # a random value between (1 - randomize-chunk-range/100)*toserver-chunk-size +# # and (1 + randomize-chunk-range/100)*toserver-chunk-size and the same +# # calculation for toclient-chunk-size. +# # Default value of randomize-chunk-range is 10. +# +# raw: yes # 'Raw' reassembly enabled or disabled. +# # raw is for content inspection by detection +# # engine. +# +# segment-prealloc: 2048 # number of segments preallocated per thread +# +# check-overlap-different-data: true|false +# # check if a segment contains different data +# # than what we've already seen for that +# # position in the stream. +# # This is enabled automatically if inline mode +# # is used or when stream-event:reassembly_overlap_different_data; +# # is used in a rule. +# +stream: + memcap: 64mb + #memcap-policy: ignore + checksum-validation: yes # reject incorrect csums + #midstream: false + #midstream-policy: ignore + inline: auto # auto will use inline mode in IPS mode, yes or no set it statically + reassembly: + memcap: 256mb + #memcap-policy: ignore + depth: 1mb # reassemble 1mb into a stream + toserver-chunk-size: 2560 + toclient-chunk-size: 2560 + randomize-chunk-size: yes + #randomize-chunk-range: 10 + #raw: yes + #segment-prealloc: 2048 + #check-overlap-different-data: true + +# Host table: +# +# Host table is used by the tagging and per host thresholding subsystems. +# +host: + hash-size: 4096 + prealloc: 1000 + memcap: 32mb + +# IP Pair table: +# +# Used by xbits 'ippair' tracking. +# +#ippair: +# hash-size: 4096 +# prealloc: 1000 +# memcap: 32mb + +# Decoder settings + +decoder: + # Teredo decoder is known to not be completely accurate + # as it will sometimes detect non-teredo as teredo. + teredo: + enabled: true + # ports to look for Teredo. Max 4 ports. If no ports are given, or + # the value is set to 'any', Teredo detection runs on _all_ UDP packets. + ports: $TEREDO_PORTS # syntax: '[3544, 1234]' or '3533' or 'any'. + + # VXLAN decoder is assigned to up to 4 UDP ports. By default only the + # IANA assigned port 4789 is enabled. + vxlan: + enabled: true + ports: $VXLAN_PORTS # syntax: '[8472, 4789]' or '4789'. + + # Geneve decoder is assigned to up to 4 UDP ports. By default only the + # IANA assigned port 6081 is enabled. + geneve: + enabled: true + ports: $GENEVE_PORTS # syntax: '[6081, 1234]' or '6081'. + + # maximum number of decoder layers for a packet + # max-layers: 16 + +## +## Performance tuning and profiling +## + +# The detection engine builds internal groups of signatures. The engine +# allows us to specify the profile to use for them, to manage memory in an +# efficient way keeping good performance. For the profile keyword you +# can use the words "low", "medium", "high" or "custom". If you use custom, +# make sure to define the values in the "custom-values" section. +# Usually you would prefer medium/high/low. +# +# "sgh mpm-context", indicates how the staging should allot mpm contexts for +# the signature groups. "single" indicates the use of a single context for +# all the signature group heads. "full" indicates a mpm-context for each +# group head. "auto" lets the engine decide the distribution of contexts +# based on the information the engine gathers on the patterns from each +# group head. +# +# The option inspection-recursion-limit is used to limit the recursive calls +# in the content inspection code. For certain payload-sig combinations, we +# might end up taking too much time in the content inspection code. +# If the argument specified is 0, the engine uses an internally defined +# default limit. When a value is not specified, there are no limits on the recursion. +detect: + profile: medium + custom-values: + toclient-groups: 3 + toserver-groups: 25 + sgh-mpm-context: auto + inspection-recursion-limit: 3000 + # If set to yes, the loading of signatures will be made after the capture + # is started. This will limit the downtime in IPS mode. + #delayed-detect: yes + + prefilter: + # default prefiltering setting. "mpm" only creates MPM/fast_pattern + # engines. "auto" also sets up prefilter engines for other keywords. + # Use --list-keywords=all to see which keywords support prefiltering. + default: mpm + + # the grouping values above control how many groups are created per + # direction. Port whitelisting forces that port to get its own group. + # Very common ports will benefit, as well as ports with many expensive + # rules. + grouping: + #tcp-whitelist: 53, 80, 139, 443, 445, 1433, 3306, 3389, 6666, 6667, 8080 + #udp-whitelist: 53, 135, 5060 + + profiling: + # Log the rules that made it past the prefilter stage, per packet + # default is off. The threshold setting determines how many rules + # must have made it past pre-filter for that rule to trigger the + # logging. + #inspect-logging-threshold: 200 + grouping: + dump-to-disk: false + include-rules: false # very verbose + include-mpm-stats: false + +# Select the multi pattern algorithm you want to run for scan/search the +# in the engine. +# +# The supported algorithms are: +# "ac" - Aho-Corasick, default implementation +# "ac-bs" - Aho-Corasick, reduced memory implementation +# "ac-ks" - Aho-Corasick, "Ken Steele" variant +# "hs" - Hyperscan, available when built with Hyperscan support +# +# The default mpm-algo value of "auto" will use "hs" if Hyperscan is +# available, "ac" otherwise. +# +# The mpm you choose also decides the distribution of mpm contexts for +# signature groups, specified by the conf - "detect.sgh-mpm-context". +# Selecting "ac" as the mpm would require "detect.sgh-mpm-context" +# to be set to "single", because of ac's memory requirements, unless the +# ruleset is small enough to fit in memory, in which case one can +# use "full" with "ac". The rest of the mpms can be run in "full" mode. + +mpm-algo: auto + +# Select the matching algorithm you want to use for single-pattern searches. +# +# Supported algorithms are "bm" (Boyer-Moore) and "hs" (Hyperscan, only +# available if Suricata has been built with Hyperscan support). +# +# The default of "auto" will use "hs" if available, otherwise "bm". + +spm-algo: auto + +# Suricata is multi-threaded. Here the threading can be influenced. +threading: + set-cpu-affinity: no + # Tune cpu affinity of threads. Each family of threads can be bound + # to specific CPUs. + # + # These 2 apply to the all runmodes: + # management-cpu-set is used for flow timeout handling, counters + # worker-cpu-set is used for 'worker' threads + # + # Additionally, for autofp these apply: + # receive-cpu-set is used for capture threads + # verdict-cpu-set is used for IPS verdict threads + # + cpu-affinity: + - management-cpu-set: + cpu: [ 0 ] # include only these CPUs in affinity settings + - receive-cpu-set: + cpu: [ 0 ] # include only these CPUs in affinity settings + - worker-cpu-set: + cpu: [ "all" ] + mode: "exclusive" + # Use explicitly 3 threads and don't compute number by using + # detect-thread-ratio variable: + # threads: 3 + prio: + low: [ 0 ] + medium: [ "1-2" ] + high: [ 3 ] + default: "medium" + #- verdict-cpu-set: + # cpu: [ 0 ] + # prio: + # default: "high" + # + # By default Suricata creates one "detect" thread per available CPU/CPU core. + # This setting allows controlling this behaviour. A ratio setting of 2 will + # create 2 detect threads for each CPU/CPU core. So for a dual core CPU this + # will result in 4 detect threads. If values below 1 are used, less threads + # are created. So on a dual core CPU a setting of 0.5 results in 1 detect + # thread being created. Regardless of the setting at a minimum 1 detect + # thread will always be created. + # + detect-thread-ratio: 1.0 + # + # By default, the per-thread stack size is left to its default setting. If + # the default thread stack size is too small, use the following configuration + # setting to change the size. Note that if any thread's stack size cannot be + # set to this value, a fatal error occurs. + # + # Generally, the per-thread stack-size should not exceed 8MB. + #stack-size: 8mb + +# Luajit has a strange memory requirement, its 'states' need to be in the +# first 2G of the process' memory. +# +# 'luajit.states' is used to control how many states are preallocated. +# State use: per detect script: 1 per detect thread. Per output script: 1 per +# script. +luajit: + states: 128 + +# Profiling settings. Only effective if Suricata has been built with +# the --enable-profiling configure flag. +# +profiling: + # Run profiling for every X-th packet. The default is 1, which means we + # profile every packet. If set to 1024, one packet is profiled for every + # 1024 received. The sample rate must be a power of 2. + #sample-rate: 1024 + + # rule profiling + rules: + + # Profiling can be disabled here, but it will still have a + # performance impact if compiled in. + enabled: yes + filename: rule_perf.log + append: yes + + # Sort options: ticks, avgticks, checks, matches, maxticks + # If commented out all the sort options will be used. + #sort: avgticks + + # Limit the number of sids for which stats are shown at exit (per sort). + limit: 10 + + # output to json + json: @e_enable_evelog@ + + # per keyword profiling + keywords: + enabled: yes + filename: keyword_perf.log + append: yes + + prefilter: + enabled: yes + filename: prefilter_perf.log + append: yes + + # per rulegroup profiling + rulegroups: + enabled: yes + filename: rule_group_perf.log + append: yes + + # packet profiling + packets: + + # Profiling can be disabled here, but it will still have a + # performance impact if compiled in. + enabled: yes + filename: packet_stats.log + append: yes + + # per packet csv output + csv: + + # Output can be disabled here, but it will still have a + # performance impact if compiled in. + enabled: no + filename: packet_stats.csv + + # profiling of locking. Only available when Suricata was built with + # --enable-profiling-locks. + locks: + enabled: no + filename: lock_stats.log + append: yes + + pcap-log: + enabled: no + filename: pcaplog_stats.log + append: yes + +## +## Netfilter integration +## + +# When running in NFQ inline mode, it is possible to use a simulated +# non-terminal NFQUEUE verdict. +# This permits sending all needed packet to Suricata via this rule: +# iptables -I FORWARD -m mark ! --mark $MARK/$MASK -j NFQUEUE +# And below, you can have your standard filtering ruleset. To activate +# this mode, you need to set mode to 'repeat' +# If you want a packet to be sent to another queue after an ACCEPT decision +# set the mode to 'route' and set next-queue value. +# On Linux >= 3.1, you can set batchcount to a value > 1 to improve performance +# by processing several packets before sending a verdict (worker runmode only). +# On Linux >= 3.6, you can set the fail-open option to yes to have the kernel +# accept the packet if Suricata is not able to keep pace. +# bypass mark and mask can be used to implement NFQ bypass. If bypass mark is +# set then the NFQ bypass is activated. Suricata will set the bypass mark/mask +# on packet of a flow that need to be bypassed. The Netfilter ruleset has to +# directly accept all packets of a flow once a packet has been marked. +nfq: +# mode: accept +# repeat-mark: 1 +# repeat-mask: 1 +# bypass-mark: 1 +# bypass-mask: 1 +# route-queue: 2 +# batchcount: 20 +# fail-open: yes + +#nflog support +nflog: + # netlink multicast group + # (the same as the iptables --nflog-group param) + # Group 0 is used by the kernel, so you can't use it + - group: 2 + # netlink buffer size + buffer-size: 18432 + # put default value here + - group: default + # set number of packets to queue inside kernel + qthreshold: 1 + # set the delay before flushing packet in the kernel's queue + qtimeout: 100 + # netlink max buffer size + max-size: 20000 + +## +## Advanced Capture Options +## + +# General settings affecting packet capture +capture: + # disable NIC offloading. It's restored when Suricata exits. + # Enabled by default. + #disable-offloading: false + # + # disable checksum validation. Same as setting '-k none' on the + # command-line. + #checksum-validation: none + +# Netmap support +# +# Netmap operates with NIC directly in driver, so you need FreeBSD 11+ which has +# built-in Netmap support or compile and install the Netmap module and appropriate +# NIC driver for your Linux system. +# To reach maximum throughput disable all receive-, segmentation-, +# checksum- offloading on your NIC (using ethtool or similar). +# Disabling TX checksum offloading is *required* for connecting OS endpoint +# with NIC endpoint. +# You can find more information at https://github.com/luigirizzo/netmap +# +netmap: + # To specify OS endpoint add plus sign at the end (e.g. "eth0+") + - interface: eth2 + # Number of capture threads. "auto" uses number of RSS queues on interface. + # Warning: unless the RSS hashing is symmetrical, this will lead to + # accuracy issues. + #threads: auto + # You can use the following variables to activate netmap tap or IPS mode. + # If copy-mode is set to ips or tap, the traffic coming to the current + # interface will be copied to the copy-iface interface. If 'tap' is set, the + # copy is complete. If 'ips' is set, the packet matching a 'drop' action + # will not be copied. + # To specify the OS as the copy-iface (so the OS can route packets, or forward + # to a service running on the same machine) add a plus sign at the end + # (e.g. "copy-iface: eth0+"). Don't forget to set up a symmetrical eth0+ -> eth0 + # for return packets. Hardware checksumming must be *off* on the interface if + # using an OS endpoint (e.g. 'ifconfig eth0 -rxcsum -txcsum -rxcsum6 -txcsum6' for FreeBSD + # or 'ethtool -K eth0 tx off rx off' for Linux). + #copy-mode: tap + #copy-iface: eth3 + # Set to yes to disable promiscuous mode + # disable-promisc: no + # Choose checksum verification mode for the interface. At the moment + # of the capture, some packets may have an invalid checksum due to + # the checksum computation being offloaded to the network card. + # Possible values are: + # - yes: checksum validation is forced + # - no: checksum validation is disabled + # - auto: Suricata uses a statistical approach to detect when + # checksum off-loading is used. + # Warning: 'checksum-validation' must be set to yes to have any validation + #checksum-checks: auto + # BPF filter to apply to this interface. The pcap filter syntax apply here. + #bpf-filter: port 80 or udp + #- interface: eth3 + #threads: auto + #copy-mode: tap + #copy-iface: eth2 + # Put default values here + - interface: default + +# PF_RING configuration: for use with native PF_RING support +# for more info see http://www.ntop.org/products/pf_ring/ +pfring: + - interface: eth0 + # Number of receive threads. If set to 'auto' Suricata will first try + # to use CPU (core) count and otherwise RSS queue count. + threads: auto + + # Default clusterid. PF_RING will load balance packets based on flow. + # All threads/processes that will participate need to have the same + # clusterid. + cluster-id: 99 + + # Default PF_RING cluster type. PF_RING can load balance per flow. + # Possible values are: + # - cluster_flow: 6-tuple: <src ip, src_port, dst ip, dst port, proto, vlan> + # - cluster_inner_flow: 6-tuple: <src ip, src port, dst ip, dst port, proto, vlan> + # - cluster_inner_flow_2_tuple: 2-tuple: <src ip, dst ip > + # - cluster_inner_flow_4_tuple: 4-tuple: <src ip, src port, dst ip, dst port > + # - cluster_inner_flow_5_tuple: 5-tuple: <src ip, src port, dst ip, dst port, proto > + # - cluster_round_robin (NOT RECOMMENDED) + cluster-type: cluster_flow + + # bpf filter for this interface + #bpf-filter: tcp + + # If bypass is set then the PF_RING hw bypass is activated, when supported + # by the network interface. Suricata will instruct the interface to bypass + # all future packets for a flow that need to be bypassed. + #bypass: yes + + # Choose checksum verification mode for the interface. At the moment + # of the capture, some packets may have an invalid checksum due to + # the checksum computation being offloaded to the network card. + # Possible values are: + # - rxonly: only compute checksum for packets received by network card. + # - yes: checksum validation is forced + # - no: checksum validation is disabled + # - auto: Suricata uses a statistical approach to detect when + # checksum off-loading is used. (default) + # Warning: 'checksum-validation' must be set to yes to have any validation + #checksum-checks: auto + # Second interface + #- interface: eth1 + # threads: 3 + # cluster-id: 93 + # cluster-type: cluster_flow + # Put default values here + - interface: default + #threads: 2 + +# For FreeBSD ipfw(8) divert(4) support. +# Please make sure you have ipfw_load="YES" and ipdivert_load="YES" +# in /etc/loader.conf or kldload'ing the appropriate kernel modules. +# Additionally, you need to have an ipfw rule for the engine to see +# the packets from ipfw. For Example: +# +# ipfw add 100 divert 8000 ip from any to any +# +# N.B. This example uses "8000" -- this number must mach the values +# you passed on the command line, i.e., -d 8000 +# +ipfw: + + # Reinject packets at the specified ipfw rule number. This config + # option is the ipfw rule number AT WHICH rule processing continues + # in the ipfw processing system after the engine has finished + # inspecting the packet for acceptance. If no rule number is specified, + # accepted packets are reinjected at the divert rule which they entered + # and IPFW rule processing continues. No check is done to verify + # this will rule makes sense so care must be taken to avoid loops in ipfw. + # + ## The following example tells the engine to reinject packets + # back into the ipfw firewall AT rule number 5500: + # + # ipfw-reinjection-rule-number: 5500 + + +napatech: + # When use_all_streams is set to "yes" the initialization code will query + # the Napatech service for all configured streams and listen on all of them. + # When set to "no" the streams config array will be used. + # + # This option necessitates running the appropriate NTPL commands to create + # the desired streams prior to running Suricata. + #use-all-streams: no + + # The streams to listen on when auto-config is disabled or when and threading + # cpu-affinity is disabled. This can be either: + # an individual stream (e.g. streams: [0]) + # or + # a range of streams (e.g. streams: ["0-3"]) + # + streams: ["0-3"] + + # Stream stats can be enabled to provide fine grain packet and byte counters + # for each thread/stream that is configured. + # + enable-stream-stats: no + + # When auto-config is enabled the streams will be created and assigned + # automatically to the NUMA node where the thread resides. If cpu-affinity + # is enabled in the threading section. Then the streams will be created + # according to the number of worker threads specified in the worker-cpu-set. + # Otherwise, the streams array is used to define the streams. + # + # This option is intended primarily to support legacy configurations. + # + # This option cannot be used simultaneously with either "use-all-streams" + # or "hardware-bypass". + # + auto-config: yes + + # Enable hardware level flow bypass. + # + hardware-bypass: yes + + # Enable inline operation. When enabled traffic arriving on a given port is + # automatically forwarded out its peer port after analysis by Suricata. + # + inline: no + + # Ports indicates which Napatech ports are to be used in auto-config mode. + # these are the port IDs of the ports that will be merged prior to the + # traffic being distributed to the streams. + # + # When hardware-bypass is enabled the ports must be configured as a segment. + # specify the port(s) on which upstream and downstream traffic will arrive. + # This information is necessary for the hardware to properly process flows. + # + # When using a tap configuration one of the ports will receive inbound traffic + # for the network and the other will receive outbound traffic. The two ports on a + # given segment must reside on the same network adapter. + # + # When using a SPAN-port configuration the upstream and downstream traffic + # arrives on a single port. This is configured by setting the two sides of the + # segment to reference the same port. (e.g. 0-0 to configure a SPAN port on + # port 0). + # + # port segments are specified in the form: + # ports: [0-1,2-3,4-5,6-6,7-7] + # + # For legacy systems when hardware-bypass is disabled this can be specified in any + # of the following ways: + # + # a list of individual ports (e.g. ports: [0,1,2,3]) + # + # a range of ports (e.g. ports: [0-3]) + # + # "all" to indicate that all ports are to be merged together + # (e.g. ports: [all]) + # + # This parameter has no effect if auto-config is disabled. + # + ports: [0-1,2-3] + + # When auto-config is enabled the hashmode specifies the algorithm for + # determining to which stream a given packet is to be delivered. + # This can be any valid Napatech NTPL hashmode command. + # + # The most common hashmode commands are: hash2tuple, hash2tuplesorted, + # hash5tuple, hash5tuplesorted and roundrobin. + # + # See Napatech NTPL documentation other hashmodes and details on their use. + # + # This parameter has no effect if auto-config is disabled. + # + hashmode: hash5tuplesorted + +## +## Configure Suricata to load Suricata-Update managed rules. +## + +default-rule-path: @e_defaultruledir@ + +rule-files: + - suricata.rules + +## +## Auxiliary configuration files. +## + +classification-file: @e_sysconfdir@classification.config +reference-config-file: @e_sysconfdir@reference.config +# threshold-file: @e_sysconfdir@threshold.config + +## +## Include other configs +## + +# Includes: Files included here will be handled as if they were in-lined +# in this configuration file. Files with relative pathnames will be +# searched for in the same directory as this configuration file. You may +# use absolute pathnames too. +#include: +# - include1.yaml +# - include2.yaml |