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  1. %YAML 1.1
  2. ---
  3.  
  4. # Suricata configuration file. In addition to the comments describing all
  5. # options in this file, full documentation can be found at:
  6. # https://redmine.openinfosecfoundation.org/projects/suricata/wiki/Suricatayaml
  7.  
  8. ##
  9. ## Step 1: inform Suricata about your network
  10. ##
  11.  
  12. vars:
  13. # more specifc is better for alert accuracy and performance
  14. address-groups:
  15. HOME_NET: "[VPC_CIDR_RANGE]"
  16. #HOME_NET: "[192.168.0.0/16]"
  17. #HOME_NET: "[10.0.0.0/8]"
  18. #HOME_NET: "[172.16.0.0/12]"
  19. #HOME_NET: "any"
  20.  
  21. EXTERNAL_NET: "!$HOME_NET"
  22. #EXTERNAL_NET: "any"
  23.  
  24. HTTP_SERVERS: "$HOME_NET"
  25. SMTP_SERVERS: "$HOME_NET"
  26. SQL_SERVERS: "$HOME_NET"
  27. DNS_SERVERS: "$HOME_NET"
  28. TELNET_SERVERS: "$HOME_NET"
  29. AIM_SERVERS: "$EXTERNAL_NET"
  30. DNP3_SERVER: "$HOME_NET"
  31. DNP3_CLIENT: "$HOME_NET"
  32. MODBUS_CLIENT: "$HOME_NET"
  33. MODBUS_SERVER: "$HOME_NET"
  34. ENIP_CLIENT: "$HOME_NET"
  35. ENIP_SERVER: "$HOME_NET"
  36.  
  37. port-groups:
  38. HTTP_PORTS: "80"
  39. SHELLCODE_PORTS: "!80"
  40. ORACLE_PORTS: 1521
  41. SSH_PORTS: 22
  42. DNP3_PORTS: 20000
  43. MODBUS_PORTS: 502
  44. FILE_DATA_PORTS: "[$HTTP_PORTS,110,143]"
  45. FTP_PORTS: 21
  46.  
  47.  
  48. ##
  49. ## Step 2: select the rules to enable or disable
  50. ##
  51.  
  52. default-rule-path: /etc/suricata/rules
  53. rule-files:
  54. - botcc.rules
  55. # - botcc.portgrouped.rules
  56. - ciarmy.rules
  57. - compromised.rules
  58. - drop.rules
  59. - dshield.rules
  60. # - emerging-activex.rules
  61. - emerging-attack_response.rules
  62. - emerging-chat.rules
  63. - emerging-current_events.rules
  64. - emerging-dns.rules
  65. - emerging-dos.rules
  66. - emerging-exploit.rules
  67. - emerging-ftp.rules
  68. # - emerging-games.rules
  69. # - emerging-icmp_info.rules
  70. # - emerging-icmp.rules
  71. - emerging-imap.rules
  72. # - emerging-inappropriate.rules
  73. # - emerging-info.rules
  74. - emerging-malware.rules
  75. - emerging-misc.rules
  76. - emerging-mobile_malware.rules
  77. - emerging-netbios.rules
  78. - emerging-p2p.rules
  79. - emerging-policy.rules
  80. - emerging-pop3.rules
  81. - emerging-rpc.rules
  82. # - emerging-scada.rules
  83. # - emerging-scada_special.rules
  84. - emerging-scan.rules
  85. # - emerging-shellcode.rules
  86. - emerging-smtp.rules
  87. - emerging-snmp.rules
  88. - emerging-sql.rules
  89. - emerging-telnet.rules
  90. - emerging-tftp.rules
  91. - emerging-trojan.rules
  92. - emerging-user_agents.rules
  93. - emerging-voip.rules
  94. - emerging-web_client.rules
  95. - emerging-web_server.rules
  96. # - emerging-web_specific_apps.rules
  97. - emerging-worm.rules
  98. - tor.rules
  99. # - decoder-events.rules # available in suricata sources under rules dir
  100. # - stream-events.rules # available in suricata sources under rules dir
  101. - http-events.rules # available in suricata sources under rules dir
  102. - smtp-events.rules # available in suricata sources under rules dir
  103. - dns-events.rules # available in suricata sources under rules dir
  104. - tls-events.rules # available in suricata sources under rules dir
  105. # - modbus-events.rules # available in suricata sources under rules dir
  106. # - app-layer-events.rules # available in suricata sources under rules dir
  107. # - dnp3-events.rules # available in suricata sources under rules dir
  108. # - ntp-events.rules # available in suricata sources under rules dir
  109.  
  110. classification-file: /etc/suricata/classification.config
  111. reference-config-file: /etc/suricata/reference.config
  112. # threshold-file: /etc/suricata/threshold.config
  113.  
  114.  
  115. ##
  116. ## Step 3: select outputs to enable
  117. ##
  118.  
  119. # The default logging directory. Any log or output file will be
  120. # placed here if its not specified with a full path name. This can be
  121. # overridden with the -l command line parameter.
  122. default-log-dir: /var/log/suricata/
  123.  
  124. # global stats configuration
  125. stats:
  126. enabled: yes
  127. # The interval field (in seconds) controls at what interval
  128. # the loggers are invoked.
  129. interval: 8
  130.  
  131. # Configure the type of alert (and other) logging you would like.
  132. outputs:
  133. # a line based alerts log similar to Snort's fast.log
  134. - fast:
  135. enabled: yes
  136. filename: fast.log
  137. append: yes
  138. #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
  139.  
  140. # Extensible Event Format (nicknamed EVE) event log in JSON format
  141. - eve-log:
  142. enabled: yes
  143. filetype: regular #regular|syslog|unix_dgram|unix_stream|redis
  144. filename: eve.json
  145. #prefix: "@cee: " # prefix to prepend to each log entry
  146. # the following are valid when type: syslog above
  147. #identity: "suricata"
  148. #facility: local5
  149. #level: Info ## possible levels: Emergency, Alert, Critical,
  150. ## Error, Warning, Notice, Info, Debug
  151. #redis:
  152. # server: 127.0.0.1
  153. # port: 6379
  154. # async: true ## if redis replies are read asynchronously
  155. # mode: list ## possible values: list|lpush (default), rpush, channel|publish
  156. # ## lpush and rpush are using a Redis list. "list" is an alias for lpush
  157. # ## publish is using a Redis channel. "channel" is an alias for publish
  158. # key: suricata ## key or channel to use (default to suricata)
  159. # Redis pipelining set up. This will enable to only do a query every
  160. # 'batch-size' events. This should lower the latency induced by network
  161. # connection at the cost of some memory. There is no flushing implemented
  162. # so this setting as to be reserved to high traffic suricata.
  163. # pipelining:
  164. # enabled: yes ## set enable to yes to enable query pipelining
  165. # batch-size: 10 ## number of entry to keep in buffer
  166. types:
  167. - alert:
  168. # payload: yes # enable dumping payload in Base64
  169. # payload-buffer-size: 4kb # max size of payload buffer to output in eve-log
  170. # payload-printable: yes # enable dumping payload in printable (lossy) format
  171. # packet: yes # enable dumping of packet (without stream segments)
  172. # http-body: yes # enable dumping of http body in Base64
  173. # http-body-printable: yes # enable dumping of http body in printable format
  174. metadata: yes # add L7/applayer fields, flowbit and other vars to the alert
  175.  
  176. # Enable the logging of tagged packets for rules using the
  177. # "tag" keyword.
  178. tagged-packets: yes
  179.  
  180. # HTTP X-Forwarded-For support by adding an extra field or overwriting
  181. # the source or destination IP address (depending on flow direction)
  182. # with the one reported in the X-Forwarded-For HTTP header. This is
  183. # helpful when reviewing alerts for traffic that is being reverse
  184. # or forward proxied.
  185. xff:
  186. enabled: no
  187. # Two operation modes are available, "extra-data" and "overwrite".
  188. mode: extra-data
  189. # Two proxy deployments are supported, "reverse" and "forward". In
  190. # a "reverse" deployment the IP address used is the last one, in a
  191. # "forward" deployment the first IP address is used.
  192. deployment: reverse
  193. # Header name where the actual IP address will be reported, if more
  194. # than one IP address is present, the last IP address will be the
  195. # one taken into consideration.
  196. header: X-Forwarded-For
  197. - http:
  198. extended: yes # enable this for extended logging information
  199. # custom allows additional http fields to be included in eve-log
  200. # the example below adds three additional fields when uncommented
  201. #custom: [Accept-Encoding, Accept-Language, Authorization]
  202. - dns:
  203. # control logging of queries and answers
  204. # default yes, no to disable
  205. query: yes # enable logging of DNS queries
  206. answer: yes # enable logging of DNS answers
  207. # control which RR types are logged
  208. # all enabled if custom not specified
  209. #custom: [a, aaaa, cname, mx, ns, ptr, txt]
  210. - tls:
  211. extended: yes # enable this for extended logging information
  212. # output TLS transaction where the session is resumed using a
  213. # session id
  214. #session-resumption: no
  215. # custom allows to control which tls fields that are included
  216. # in eve-log
  217. #custom: [subject, issuer, session_resumed, serial, fingerprint, sni, version, not_before, not_after, certificate, chain]
  218. - files:
  219. force-magic: no # force logging magic on all logged files
  220. # force logging of checksums, available hash functions are md5,
  221. # sha1 and sha256
  222. #force-hash: [md5]
  223. #- drop:
  224. # alerts: yes # log alerts that caused drops
  225. # flows: all # start or all: 'start' logs only a single drop
  226. # # per flow direction. All logs each dropped pkt.
  227. - smtp:
  228. #extended: yes # enable this for extended logging information
  229. # this includes: bcc, message-id, subject, x_mailer, user-agent
  230. # custom fields logging from the list:
  231. # reply-to, bcc, message-id, subject, x-mailer, user-agent, received,
  232. # x-originating-ip, in-reply-to, references, importance, priority,
  233. # sensitivity, organization, content-md5, date
  234. #custom: [received, x-mailer, x-originating-ip, relays, reply-to, bcc]
  235. # output md5 of fields: body, subject
  236. # for the body you need to set app-layer.protocols.smtp.mime.body-md5
  237. # to yes
  238. #md5: [body, subject]
  239.  
  240. #- dnp3
  241. #- nfs
  242. - ssh
  243. - stats:
  244. totals: yes # stats for all threads merged together
  245. threads: no # per thread stats
  246. deltas: no # include delta values
  247. # bi-directional flows
  248. - flow
  249. # uni-directional flows
  250. #- netflow
  251. # Vars log flowbits and other packet and flow vars
  252. #- vars
  253.  
  254. # alert output for use with Barnyard2
  255. - unified2-alert:
  256. enabled: no
  257. filename: unified2.alert
  258.  
  259. # File size limit. Can be specified in kb, mb, gb. Just a number
  260. # is parsed as bytes.
  261. #limit: 32mb
  262.  
  263. # By default unified2 log files have the file creation time (in
  264. # unix epoch format) appended to the filename. Set this to yes to
  265. # disable this behaviour.
  266. #nostamp: no
  267.  
  268. # Sensor ID field of unified2 alerts.
  269. #sensor-id: 0
  270.  
  271. # Include payload of packets related to alerts. Defaults to true, set to
  272. # false if payload is not required.
  273. #payload: yes
  274.  
  275. # HTTP X-Forwarded-For support by adding the unified2 extra header or
  276. # overwriting the source or destination IP address (depending on flow
  277. # direction) with the one reported in the X-Forwarded-For HTTP header.
  278. # This is helpful when reviewing alerts for traffic that is being reverse
  279. # or forward proxied.
  280. xff:
  281. enabled: no
  282. # Two operation modes are available, "extra-data" and "overwrite". Note
  283. # that in the "overwrite" mode, if the reported IP address in the HTTP
  284. # X-Forwarded-For header is of a different version of the packet
  285. # received, it will fall-back to "extra-data" mode.
  286. mode: extra-data
  287. # Two proxy deployments are supported, "reverse" and "forward". In
  288. # a "reverse" deployment the IP address used is the last one, in a
  289. # "forward" deployment the first IP address is used.
  290. deployment: reverse
  291. # Header name where the actual IP address will be reported, if more
  292. # than one IP address is present, the last IP address will be the
  293. # one taken into consideration.
  294. header: X-Forwarded-For
  295.  
  296. # a line based log of HTTP requests (no alerts)
  297. - http-log:
  298. enabled: no
  299. filename: http.log
  300. append: yes
  301. #extended: yes # enable this for extended logging information
  302. #custom: yes # enabled the custom logging format (defined by customformat)
  303. #customformat: "%{%D-%H:%M:%S}t.%z %{X-Forwarded-For}i %H %m %h %u %s %B %a:%p -> %A:%P"
  304. #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
  305.  
  306. # a line based log of TLS handshake parameters (no alerts)
  307. - tls-log:
  308. enabled: no # Log TLS connections.
  309. filename: tls.log # File to store TLS logs.
  310. append: yes
  311. #extended: yes # Log extended information like fingerprint
  312. #custom: yes # enabled the custom logging format (defined by customformat)
  313. #customformat: "%{%D-%H:%M:%S}t.%z %a:%p -> %A:%P %v %n %d %D"
  314. #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
  315. # output TLS transaction where the session is resumed using a
  316. # session id
  317. #session-resumption: no
  318.  
  319. # output module to store certificates chain to disk
  320. - tls-store:
  321. enabled: no
  322. #certs-log-dir: certs # directory to store the certificates files
  323.  
  324. # a line based log of DNS requests and/or replies (no alerts)
  325. - dns-log:
  326. enabled: no
  327. filename: dns.log
  328. append: yes
  329. #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
  330.  
  331. # Packet log... log packets in pcap format. 3 modes of operation: "normal"
  332. # "multi" and "sguil".
  333. #
  334. # In normal mode a pcap file "filename" is created in the default-log-dir,
  335. # or are as specified by "dir".
  336. # In multi mode, a file is created per thread. This will perform much
  337. # better, but will create multiple files where 'normal' would create one.
  338. # In multi mode the filename takes a few special variables:
  339. # - %n -- thread number
  340. # - %i -- thread id
  341. # - %t -- timestamp (secs or secs.usecs based on 'ts-format'
  342. # E.g. filename: pcap.%n.%t
  343. #
  344. # Note that it's possible to use directories, but the directories are not
  345. # created by Suricata. E.g. filename: pcaps/%n/log.%s will log into the
  346. # per thread directory.
  347. #
  348. # Also note that the limit and max-files settings are enforced per thread.
  349. # So the size limit when using 8 threads with 1000mb files and 2000 files
  350. # is: 8*1000*2000 ~ 16TiB.
  351. #
  352. # In Sguil mode "dir" indicates the base directory. In this base dir the
  353. # pcaps are created in th directory structure Sguil expects:
  354. #
  355. # $sguil-base-dir/YYYY-MM-DD/$filename.<timestamp>
  356. #
  357. # By default all packets are logged except:
  358. # - TCP streams beyond stream.reassembly.depth
  359. # - encrypted streams after the key exchange
  360. #
  361. - pcap-log:
  362. enabled: yes
  363. filename: packet-capture
  364.  
  365. # File size limit. Can be specified in kb, mb, gb. Just a number
  366. # is parsed as bytes.
  367. limit: 500mb
  368.  
  369. # If set to a value will enable ring buffer mode. Will keep Maximum of "max-files" of size "limit"
  370. # max-files: 4
  371.  
  372. mode: normal # normal, multi or sguil.
  373.  
  374. # Directory to place pcap files. If not provided the default log
  375. # directory will be used. Required for "sguil" mode.
  376. dir: /pcap-data/
  377.  
  378. #ts-format: usec # sec or usec second format (default) is filename.sec usec is filename.sec.usec
  379. use-stream-depth: no #If set to "yes" packets seen after reaching stream inspection depth are ignored. "no" logs all packets
  380. honor-pass-rules: no # If set to "yes", flows in which a pass rule matched will stopped being logged.
  381.  
  382. # a full alerts log containing much information for signature writers
  383. # or for investigating suspected false positives.
  384. - alert-debug:
  385. enabled: no
  386. filename: alert-debug.log
  387. append: yes
  388. #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
  389.  
  390. # alert output to prelude (http://www.prelude-technologies.com/) only
  391. # available if Suricata has been compiled with --enable-prelude
  392. - alert-prelude:
  393. enabled: no
  394. profile: suricata
  395. log-packet-content: no
  396. log-packet-header: yes
  397.  
  398. # Stats.log contains data from various counters of the suricata engine.
  399. - stats:
  400. enabled: yes
  401. filename: stats.log
  402. append: yes # append to file (yes) or overwrite it (no)
  403. totals: yes # stats for all threads merged together
  404. threads: no # per thread stats
  405. #null-values: yes # print counters that have value 0
  406.  
  407. # a line based alerts log similar to fast.log into syslog
  408. - syslog:
  409. enabled: no
  410. # reported identity to syslog. If ommited the program name (usually
  411. # suricata) will be used.
  412. #identity: "suricata"
  413. facility: local5
  414. #level: Info ## possible levels: Emergency, Alert, Critical,
  415. ## Error, Warning, Notice, Info, Debug
  416.  
  417. # a line based information for dropped packets in IPS mode
  418. - drop:
  419. enabled: no
  420. filename: drop.log
  421. append: yes
  422. #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
  423.  
  424. # output module to store extracted files to disk
  425. #
  426. # The files are stored to the log-dir in a format "file.<id>" where <id> is
  427. # an incrementing number starting at 1. For each file "file.<id>" a meta
  428. # file "file.<id>.meta" is created.
  429. #
  430. # File extraction depends on a lot of things to be fully done:
  431. # - file-store stream-depth. For optimal results, set this to 0 (unlimited)
  432. # - http request / response body sizes. Again set to 0 for optimal results.
  433. # - rules that contain the "filestore" keyword.
  434. - file-store:
  435. enabled: no # set to yes to enable
  436. log-dir: files # directory to store the files
  437. force-magic: no # force logging magic on all stored files
  438. # force logging of checksums, available hash functions are md5,
  439. # sha1 and sha256
  440. #force-hash: [md5]
  441. force-filestore: no # force storing of all files
  442. # override global stream-depth for sessions in which we want to
  443. # perform file extraction. Set to 0 for unlimited.
  444. #stream-depth: 0
  445. #waldo: file.waldo # waldo file to store the file_id across runs
  446. # uncomment to disable meta file writing
  447. #write-meta: no
  448. # uncomment the following variable to define how many files can
  449. # remain open for filestore by Suricata. Default value is 0 which
  450. # means files get closed after each write
  451. #max-open-files: 1000
  452.  
  453. # output module to log files tracked in a easily parsable json format
  454. - file-log:
  455. enabled: no
  456. filename: files-json.log
  457. append: yes
  458. #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
  459.  
  460. force-magic: no # force logging magic on all logged files
  461. # force logging of checksums, available hash functions are md5,
  462. # sha1 and sha256
  463. #force-hash: [md5]
  464.  
  465. # Log TCP data after stream normalization
  466. # 2 types: file or dir. File logs into a single logfile. Dir creates
  467. # 2 files per TCP session and stores the raw TCP data into them.
  468. # Using 'both' will enable both file and dir modes.
  469. #
  470. # Note: limited by stream.depth
  471. - tcp-data:
  472. enabled: no
  473. type: file
  474. filename: tcp-data.log
  475.  
  476. # Log HTTP body data after normalization, dechunking and unzipping.
  477. # 2 types: file or dir. File logs into a single logfile. Dir creates
  478. # 2 files per HTTP session and stores the normalized data into them.
  479. # Using 'both' will enable both file and dir modes.
  480. #
  481. # Note: limited by the body limit settings
  482. - http-body-data:
  483. enabled: no
  484. type: file
  485. filename: http-data.log
  486.  
  487. # Lua Output Support - execute lua script to generate alert and event
  488. # output.
  489. # Documented at:
  490. # https://redmine.openinfosecfoundation.org/projects/suricata/wiki/Lua_Output
  491. - lua:
  492. enabled: no
  493. #scripts-dir: /etc/suricata/lua-output/
  494. scripts:
  495. # - script1.lua
  496.  
  497. # Logging configuration. This is not about logging IDS alerts/events, but
  498. # output about what Suricata is doing, like startup messages, errors, etc.
  499. logging:
  500. # The default log level, can be overridden in an output section.
  501. # Note that debug level logging will only be emitted if Suricata was
  502. # compiled with the --enable-debug configure option.
  503. #
  504. # This value is overriden by the SC_LOG_LEVEL env var.
  505. default-log-level: notice
  506.  
  507. # The default output format. Optional parameter, should default to
  508. # something reasonable if not provided. Can be overriden in an
  509. # output section. You can leave this out to get the default.
  510. #
  511. # This value is overriden by the SC_LOG_FORMAT env var.
  512. #default-log-format: "[%i] %t - (%f:%l) <%d> (%n) -- "
  513.  
  514. # A regex to filter output. Can be overridden in an output section.
  515. # Defaults to empty (no filter).
  516. #
  517. # This value is overriden by the SC_LOG_OP_FILTER env var.
  518. default-output-filter:
  519.  
  520. # Define your logging outputs. If none are defined, or they are all
  521. # disabled you will get the default - console output.
  522. outputs:
  523. - console:
  524. enabled: yes
  525. # type: json
  526. - file:
  527. enabled: yes
  528. level: info
  529. filename: /var/log/suricata/suricata.log
  530. # type: json
  531. - syslog:
  532. enabled: no
  533. facility: local5
  534. format: "[%i] <%d> -- "
  535. # type: json
  536.  
  537.  
  538. ##
  539. ## Step 4: configure common capture settings
  540. ##
  541. ## See "Advanced Capture Options" below for more options, including NETMAP
  542. ## and PF_RING.
  543. ##
  544.  
  545. # Linux high speed capture support
  546. af-packet:
  547. - interface: eth0
  548. # Number of receive threads. "auto" uses the number of cores
  549. #threads: auto
  550. # Default clusterid. AF_PACKET will load balance packets based on flow.
  551. cluster-id: 99
  552. # Default AF_PACKET cluster type. AF_PACKET can load balance per flow or per hash.
  553. # This is only supported for Linux kernel > 3.1
  554. # possible value are:
  555. # * cluster_round_robin: round robin load balancing
  556. # * cluster_flow: all packets of a given flow are send to the same socket
  557. # * cluster_cpu: all packets treated in kernel by a CPU are send to the same socket
  558. # * cluster_qm: all packets linked by network card to a RSS queue are sent to the same
  559. # socket. Requires at least Linux 3.14.
  560. # * cluster_random: packets are sent randomly to sockets but with an equipartition.
  561. # Requires at least Linux 3.14.
  562. # * cluster_rollover: kernel rotates between sockets filling each socket before moving
  563. # to the next. Requires at least Linux 3.10.
  564. # Recommended modes are cluster_flow on most boxes and cluster_cpu or cluster_qm on system
  565. # with capture card using RSS (require cpu affinity tuning and system irq tuning)
  566. cluster-type: cluster_flow
  567. # In some fragmentation case, the hash can not be computed. If "defrag" is set
  568. # to yes, the kernel will do the needed defragmentation before sending the packets.
  569. defrag: yes
  570. # After Linux kernel 3.10 it is possible to activate the rollover option: if a socket is
  571. # full then kernel will send the packet on the next socket with room available. This option
  572. # can minimize packet drop and increase the treated bandwidth on single intensive flow.
  573. #rollover: yes
  574. # To use the ring feature of AF_PACKET, set 'use-mmap' to yes
  575. #use-mmap: yes
  576. # Lock memory map to avoid it goes to swap. Be careful that over suscribing could lock
  577. # your system
  578. #mmap-locked: yes
  579. # Use tpacket_v3 capture mode, only active if use-mmap is true
  580. # Don't use it in IPS or TAP mode as it causes severe latency
  581. #tpacket-v3: yes
  582. # Ring size will be computed with respect to max_pending_packets and number
  583. # of threads. You can set manually the ring size in number of packets by setting
  584. # the following value. If you are using flow cluster-type and have really network
  585. # intensive single-flow you could want to set the ring-size independently of the number
  586. # of threads:
  587. #ring-size: 2048
  588. # Block size is used by tpacket_v3 only. It should set to a value high enough to contain
  589. # a decent number of packets. Size is in bytes so please consider your MTU. It should be
  590. # a power of 2 and it must be multiple of page size (usually 4096).
  591. #block-size: 32768
  592. # tpacket_v3 block timeout: an open block is passed to userspace if it is not
  593. # filled after block-timeout milliseconds.
  594. #block-timeout: 10
  595. # On busy system, this could help to set it to yes to recover from a packet drop
  596. # phase. This will result in some packets (at max a ring flush) being non treated.
  597. #use-emergency-flush: yes
  598. # recv buffer size, increase value could improve performance
  599. # buffer-size: 32768
  600. # Set to yes to disable promiscuous mode
  601. # disable-promisc: no
  602. # Choose checksum verification mode for the interface. At the moment
  603. # of the capture, some packets may be with an invalid checksum due to
  604. # offloading to the network card of the checksum computation.
  605. # Possible values are:
  606. # - kernel: use indication sent by kernel for each packet (default)
  607. # - yes: checksum validation is forced
  608. # - no: checksum validation is disabled
  609. # - auto: suricata uses a statistical approach to detect when
  610. # checksum off-loading is used.
  611. # Warning: 'checksum-validation' must be set to yes to have any validation
  612. #checksum-checks: kernel
  613. # BPF filter to apply to this interface. The pcap filter syntax apply here.
  614. #bpf-filter: port 80 or udp
  615. # You can use the following variables to activate AF_PACKET tap or IPS mode.
  616. # If copy-mode is set to ips or tap, the traffic coming to the current
  617. # interface will be copied to the copy-iface interface. If 'tap' is set, the
  618. # copy is complete. If 'ips' is set, the packet matching a 'drop' action
  619. # will not be copied.
  620. #copy-mode: ips
  621. #copy-iface: eth1
  622.  
  623. # Put default values here. These will be used for an interface that is not
  624. # in the list above.
  625. - interface: default
  626. #threads: auto
  627. #use-mmap: no
  628. #rollover: yes
  629. #tpacket-v3: yes
  630.  
  631. # Cross platform libpcap capture support
  632. pcap:
  633. - interface: eth0
  634. # On Linux, pcap will try to use mmaped capture and will use buffer-size
  635. # as total of memory used by the ring. So set this to something bigger
  636. # than 1% of your bandwidth.
  637. #buffer-size: 16777216
  638. #bpf-filter: "tcp and port 25"
  639. # Choose checksum verification mode for the interface. At the moment
  640. # of the capture, some packets may be with an invalid checksum due to
  641. # offloading to the network card of the checksum computation.
  642. # Possible values are:
  643. # - yes: checksum validation is forced
  644. # - no: checksum validation is disabled
  645. # - auto: suricata uses a statistical approach to detect when
  646. # checksum off-loading is used. (default)
  647. # Warning: 'checksum-validation' must be set to yes to have any validation
  648. #checksum-checks: auto
  649. # With some accelerator cards using a modified libpcap (like myricom), you
  650. # may want to have the same number of capture threads as the number of capture
  651. # rings. In this case, set up the threads variable to N to start N threads
  652. # listening on the same interface.
  653. #threads: 16
  654. # set to no to disable promiscuous mode:
  655. #promisc: no
  656. # set snaplen, if not set it defaults to MTU if MTU can be known
  657. # via ioctl call and to full capture if not.
  658. #snaplen: 1518
  659. # Put default values here
  660. - interface: default
  661. #checksum-checks: auto
  662.  
  663. # Settings for reading pcap files
  664. pcap-file:
  665. # Possible values are:
  666. # - yes: checksum validation is forced
  667. # - no: checksum validation is disabled
  668. # - auto: suricata uses a statistical approach to detect when
  669. # checksum off-loading is used. (default)
  670. # Warning: 'checksum-validation' must be set to yes to have checksum tested
  671. checksum-checks: auto
  672.  
  673. # See "Advanced Capture Options" below for more options, including NETMAP
  674. # and PF_RING.
  675.  
  676.  
  677. ##
  678. ## Step 5: App Layer Protocol Configuration
  679. ##
  680.  
  681. # Configure the app-layer parsers. The protocols section details each
  682. # protocol.
  683. #
  684. # The option "enabled" takes 3 values - "yes", "no", "detection-only".
  685. # "yes" enables both detection and the parser, "no" disables both, and
  686. # "detection-only" enables protocol detection only (parser disabled).
  687. app-layer:
  688. protocols:
  689. tls:
  690. enabled: yes
  691. detection-ports:
  692. dp: 443
  693.  
  694. # Completely stop processing TLS/SSL session after the handshake
  695. # completed. If bypass is enabled this will also trigger flow
  696. # bypass. If disabled (the default), TLS/SSL session is still
  697. # tracked for Heartbleed and other anomalies.
  698. #no-reassemble: yes
  699. dcerpc:
  700. enabled: yes
  701. ftp:
  702. enabled: yes
  703. ssh:
  704. enabled: yes
  705. smtp:
  706. enabled: yes
  707. # Configure SMTP-MIME Decoder
  708. mime:
  709. # Decode MIME messages from SMTP transactions
  710. # (may be resource intensive)
  711. # This field supercedes all others because it turns the entire
  712. # process on or off
  713. decode-mime: yes
  714.  
  715. # Decode MIME entity bodies (ie. base64, quoted-printable, etc.)
  716. decode-base64: yes
  717. decode-quoted-printable: yes
  718.  
  719. # Maximum bytes per header data value stored in the data structure
  720. # (default is 2000)
  721. header-value-depth: 2000
  722.  
  723. # Extract URLs and save in state data structure
  724. extract-urls: yes
  725. # Set to yes to compute the md5 of the mail body. You will then
  726. # be able to journalize it.
  727. body-md5: no
  728. # Configure inspected-tracker for file_data keyword
  729. inspected-tracker:
  730. content-limit: 100000
  731. content-inspect-min-size: 32768
  732. content-inspect-window: 4096
  733. imap:
  734. enabled: detection-only
  735. msn:
  736. enabled: detection-only
  737. smb:
  738. enabled: yes
  739. detection-ports:
  740. dp: 139, 445
  741. # smb2 detection is disabled internally inside the engine.
  742. #smb2:
  743. # enabled: yes
  744. # Note: NFS parser depends on Rust support: pass --enable-rust
  745. # to configure.
  746. nfs:
  747. enabled: no
  748. dns:
  749. # memcaps. Globally and per flow/state.
  750. #global-memcap: 16mb
  751. #state-memcap: 512kb
  752.  
  753. # How many unreplied DNS requests are considered a flood.
  754. # If the limit is reached, app-layer-event:dns.flooded; will match.
  755. #request-flood: 500
  756.  
  757. tcp:
  758. enabled: yes
  759. detection-ports:
  760. dp: 53
  761. udp:
  762. enabled: yes
  763. detection-ports:
  764. dp: 53
  765. http:
  766. enabled: yes
  767. # memcap: 64mb
  768.  
  769. # default-config: Used when no server-config matches
  770. # personality: List of personalities used by default
  771. # request-body-limit: Limit reassembly of request body for inspection
  772. # by http_client_body & pcre /P option.
  773. # response-body-limit: Limit reassembly of response body for inspection
  774. # by file_data, http_server_body & pcre /Q option.
  775. # double-decode-path: Double decode path section of the URI
  776. # double-decode-query: Double decode query section of the URI
  777. # response-body-decompress-layer-limit:
  778. # Limit to how many layers of compression will be
  779. # decompressed. Defaults to 2.
  780. #
  781. # server-config: List of server configurations to use if address matches
  782. # address: List of ip addresses or networks for this block
  783. # personalitiy: List of personalities used by this block
  784. # request-body-limit: Limit reassembly of request body for inspection
  785. # by http_client_body & pcre /P option.
  786. # response-body-limit: Limit reassembly of response body for inspection
  787. # by file_data, http_server_body & pcre /Q option.
  788. # double-decode-path: Double decode path section of the URI
  789. # double-decode-query: Double decode query section of the URI
  790. #
  791. # uri-include-all: Include all parts of the URI. By default the
  792. # 'scheme', username/password, hostname and port
  793. # are excluded. Setting this option to true adds
  794. # all of them to the normalized uri as inspected
  795. # by http_uri, urilen, pcre with /U and the other
  796. # keywords that inspect the normalized uri.
  797. # Note that this does not affect http_raw_uri.
  798. # Also, note that including all was the default in
  799. # 1.4 and 2.0beta1.
  800. #
  801. # meta-field-limit: Hard size limit for request and response size
  802. # limits. Applies to request line and headers,
  803. # response line and headers. Does not apply to
  804. # request or response bodies. Default is 18k.
  805. # If this limit is reached an event is raised.
  806. #
  807. # Currently Available Personalities:
  808. # Minimal, Generic, IDS (default), IIS_4_0, IIS_5_0, IIS_5_1, IIS_6_0,
  809. # IIS_7_0, IIS_7_5, Apache_2
  810. libhtp:
  811. default-config:
  812. personality: IDS
  813.  
  814. # Can be specified in kb, mb, gb. Just a number indicates
  815. # it's in bytes.
  816. request-body-limit: 100kb
  817. response-body-limit: 100kb
  818.  
  819. # inspection limits
  820. request-body-minimal-inspect-size: 32kb
  821. request-body-inspect-window: 4kb
  822. response-body-minimal-inspect-size: 40kb
  823. response-body-inspect-window: 16kb
  824.  
  825. # response body decompression (0 disables)
  826. response-body-decompress-layer-limit: 2
  827.  
  828. # auto will use http-body-inline mode in IPS mode, yes or no set it statically
  829. http-body-inline: auto
  830.  
  831. # Take a random value for inspection sizes around the specified value.
  832. # This lower the risk of some evasion technics but could lead
  833. # detection change between runs. It is set to 'yes' by default.
  834. #randomize-inspection-sizes: yes
  835. # If randomize-inspection-sizes is active, the value of various
  836. # inspection size will be choosen in the [1 - range%, 1 + range%]
  837. # range
  838. # Default value of randomize-inspection-range is 10.
  839. #randomize-inspection-range: 10
  840.  
  841. # decoding
  842. double-decode-path: no
  843. double-decode-query: no
  844.  
  845. server-config:
  846.  
  847. #- apache:
  848. # address: [192.168.1.0/24, 127.0.0.0/8, "::1"]
  849. # personality: Apache_2
  850. # # Can be specified in kb, mb, gb. Just a number indicates
  851. # # it's in bytes.
  852. # request-body-limit: 4096
  853. # response-body-limit: 4096
  854. # double-decode-path: no
  855. # double-decode-query: no
  856.  
  857. #- iis7:
  858. # address:
  859. # - 192.168.0.0/24
  860. # - 192.168.10.0/24
  861. # personality: IIS_7_0
  862. # # Can be specified in kb, mb, gb. Just a number indicates
  863. # # it's in bytes.
  864. # request-body-limit: 4096
  865. # response-body-limit: 4096
  866. # double-decode-path: no
  867. # double-decode-query: no
  868.  
  869. # Note: Modbus probe parser is minimalist due to the poor significant field
  870. # Only Modbus message length (greater than Modbus header length)
  871. # And Protocol ID (equal to 0) are checked in probing parser
  872. # It is important to enable detection port and define Modbus port
  873. # to avoid false positive
  874. modbus:
  875. # How many unreplied Modbus requests are considered a flood.
  876. # If the limit is reached, app-layer-event:modbus.flooded; will match.
  877. #request-flood: 500
  878.  
  879. enabled: no
  880. detection-ports:
  881. dp: 502
  882. # According to MODBUS Messaging on TCP/IP Implementation Guide V1.0b, it
  883. # is recommended to keep the TCP connection opened with a remote device
  884. # and not to open and close it for each MODBUS/TCP transaction. In that
  885. # case, it is important to set the depth of the stream reassembling as
  886. # unlimited (stream.reassembly.depth: 0)
  887.  
  888. # Stream reassembly size for modbus. By default track it completely.
  889. stream-depth: 0
  890.  
  891. # DNP3
  892. dnp3:
  893. enabled: no
  894. detection-ports:
  895. dp: 20000
  896.  
  897. # SCADA EtherNet/IP and CIP protocol support
  898. enip:
  899. enabled: no
  900. detection-ports:
  901. dp: 44818
  902. sp: 44818
  903.  
  904. # Note: parser depends on experimental Rust support
  905. # with --enable-rust-experimental passed to configure
  906. ntp:
  907. enabled: no
  908.  
  909. # Limit for the maximum number of asn1 frames to decode (default 256)
  910. asn1-max-frames: 256
  911.  
  912.  
  913. ##############################################################################
  914. ##
  915. ## Advanced settings below
  916. ##
  917. ##############################################################################
  918.  
  919. ##
  920. ## Run Options
  921. ##
  922.  
  923. # Run suricata as user and group.
  924. #run-as:
  925. # user: suri
  926. # group: suri
  927.  
  928. # Some logging module will use that name in event as identifier. The default
  929. # value is the hostname
  930. #sensor-name: suricata
  931.  
  932. # Default location of the pid file. The pid file is only used in
  933. # daemon mode (start Suricata with -D). If not running in daemon mode
  934. # the --pidfile command line option must be used to create a pid file.
  935. #pid-file: /var/run/suricata.pid
  936.  
  937. # Daemon working directory
  938. # Suricata will change directory to this one if provided
  939. # Default: "/"
  940. #daemon-directory: "/"
  941.  
  942. # Suricata core dump configuration. Limits the size of the core dump file to
  943. # approximately max-dump. The actual core dump size will be a multiple of the
  944. # page size. Core dumps that would be larger than max-dump are truncated. On
  945. # Linux, the actual core dump size may be a few pages larger than max-dump.
  946. # Setting max-dump to 0 disables core dumping.
  947. # Setting max-dump to 'unlimited' will give the full core dump file.
  948. # On 32-bit Linux, a max-dump value >= ULONG_MAX may cause the core dump size
  949. # to be 'unlimited'.
  950.  
  951. coredump:
  952. max-dump: unlimited
  953.  
  954. # If suricata box is a router for the sniffed networks, set it to 'router'. If
  955. # it is a pure sniffing setup, set it to 'sniffer-only'.
  956. # If set to auto, the variable is internally switch to 'router' in IPS mode
  957. # and 'sniffer-only' in IDS mode.
  958. # This feature is currently only used by the reject* keywords.
  959. host-mode: auto
  960.  
  961. # Number of packets preallocated per thread. The default is 1024. A higher number
  962. # will make sure each CPU will be more easily kept busy, but may negatively
  963. # impact caching.
  964. #
  965. # If you are using the CUDA pattern matcher (mpm-algo: ac-cuda), different rules
  966. # apply. In that case try something like 60000 or more. This is because the CUDA
  967. # pattern matcher buffers and scans as many packets as possible in parallel.
  968. #max-pending-packets: 1024
  969.  
  970. # Runmode the engine should use. Please check --list-runmodes to get the available
  971. # runmodes for each packet acquisition method. Defaults to "autofp" (auto flow pinned
  972. # load balancing).
  973. #runmode: autofp
  974.  
  975. # Specifies the kind of flow load balancer used by the flow pinned autofp mode.
  976. #
  977. # Supported schedulers are:
  978. #
  979. # round-robin - Flows assigned to threads in a round robin fashion.
  980. # active-packets - Flows assigned to threads that have the lowest number of
  981. # unprocessed packets (default).
  982. # hash - Flow alloted usihng the address hash. More of a random
  983. # technique. Was the default in Suricata 1.2.1 and older.
  984. #
  985. #autofp-scheduler: active-packets
  986.  
  987. # Preallocated size for packet. Default is 1514 which is the classical
  988. # size for pcap on ethernet. You should adjust this value to the highest
  989. # packet size (MTU + hardware header) on your system.
  990. #default-packet-size: 1514
  991.  
  992. # Unix command socket can be used to pass commands to suricata.
  993. # An external tool can then connect to get information from suricata
  994. # or trigger some modifications of the engine. Set enabled to yes
  995. # to activate the feature. In auto mode, the feature will only be
  996. # activated in live capture mode. You can use the filename variable to set
  997. # the file name of the socket.
  998. unix-command:
  999. enabled: auto
  1000. #filename: custom.socket
  1001.  
  1002. # Magic file. The extension .mgc is added to the value here.
  1003. #magic-file: /usr/share/file/magic
  1004. #magic-file:
  1005.  
  1006. legacy:
  1007. uricontent: enabled
  1008.  
  1009. ##
  1010. ## Detection settings
  1011. ##
  1012.  
  1013. # Set the order of alerts bassed on actions
  1014. # The default order is pass, drop, reject, alert
  1015. # action-order:
  1016. # - pass
  1017. # - drop
  1018. # - reject
  1019. # - alert
  1020.  
  1021. # IP Reputation
  1022. #reputation-categories-file: /etc/suricata/iprep/categories.txt
  1023. #default-reputation-path: /etc/suricata/iprep
  1024. #reputation-files:
  1025. # - reputation.list
  1026.  
  1027. # When run with the option --engine-analysis, the engine will read each of
  1028. # the parameters below, and print reports for each of the enabled sections
  1029. # and exit. The reports are printed to a file in the default log dir
  1030. # given by the parameter "default-log-dir", with engine reporting
  1031. # subsection below printing reports in its own report file.
  1032. engine-analysis:
  1033. # enables printing reports for fast-pattern for every rule.
  1034. rules-fast-pattern: yes
  1035. # enables printing reports for each rule
  1036. rules: yes
  1037.  
  1038. #recursion and match limits for PCRE where supported
  1039. pcre:
  1040. match-limit: 3500
  1041. match-limit-recursion: 1500
  1042.  
  1043. ##
  1044. ## Advanced Traffic Tracking and Reconstruction Settings
  1045. ##
  1046.  
  1047. # Host specific policies for defragmentation and TCP stream
  1048. # reassembly. The host OS lookup is done using a radix tree, just
  1049. # like a routing table so the most specific entry matches.
  1050. host-os-policy:
  1051. # Make the default policy windows.
  1052. windows: []
  1053. bsd: []
  1054. bsd-right: []
  1055. old-linux: []
  1056. linux: [0.0.0.0/0]
  1057. old-solaris: []
  1058. solaris: []
  1059. hpux10: []
  1060. hpux11: []
  1061. irix: []
  1062. macos: []
  1063. vista: []
  1064. windows2k3: []
  1065.  
  1066. # Defrag settings:
  1067.  
  1068. defrag:
  1069. memcap: 32mb
  1070. hash-size: 65536
  1071. trackers: 65535 # number of defragmented flows to follow
  1072. max-frags: 65535 # number of fragments to keep (higher than trackers)
  1073. prealloc: yes
  1074. timeout: 60
  1075.  
  1076. # Enable defrag per host settings
  1077. # host-config:
  1078. #
  1079. # - dmz:
  1080. # timeout: 30
  1081. # 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"]
  1082. #
  1083. # - lan:
  1084. # timeout: 45
  1085. # address:
  1086. # - 192.168.0.0/24
  1087. # - 192.168.10.0/24
  1088. # - 172.16.14.0/24
  1089.  
  1090. # Flow settings:
  1091. # By default, the reserved memory (memcap) for flows is 32MB. This is the limit
  1092. # for flow allocation inside the engine. You can change this value to allow
  1093. # more memory usage for flows.
  1094. # The hash-size determine the size of the hash used to identify flows inside
  1095. # the engine, and by default the value is 65536.
  1096. # At the startup, the engine can preallocate a number of flows, to get a better
  1097. # performance. The number of flows preallocated is 10000 by default.
  1098. # emergency-recovery is the percentage of flows that the engine need to
  1099. # prune before unsetting the emergency state. The emergency state is activated
  1100. # when the memcap limit is reached, allowing to create new flows, but
  1101. # prunning them with the emergency timeouts (they are defined below).
  1102. # If the memcap is reached, the engine will try to prune flows
  1103. # with the default timeouts. If it doens't find a flow to prune, it will set
  1104. # the emergency bit and it will try again with more agressive timeouts.
  1105. # If that doesn't work, then it will try to kill the last time seen flows
  1106. # not in use.
  1107. # The memcap can be specified in kb, mb, gb. Just a number indicates it's
  1108. # in bytes.
  1109.  
  1110. flow:
  1111. memcap: 128mb
  1112. hash-size: 65536
  1113. prealloc: 10000
  1114. emergency-recovery: 30
  1115. #managers: 1 # default to one flow manager
  1116. #recyclers: 1 # default to one flow recycler thread
  1117.  
  1118. # This option controls the use of vlan ids in the flow (and defrag)
  1119. # hashing. Normally this should be enabled, but in some (broken)
  1120. # setups where both sides of a flow are not tagged with the same vlan
  1121. # tag, we can ignore the vlan id's in the flow hashing.
  1122. vlan:
  1123. use-for-tracking: true
  1124.  
  1125. # Specific timeouts for flows. Here you can specify the timeouts that the
  1126. # active flows will wait to transit from the current state to another, on each
  1127. # protocol. The value of "new" determine the seconds to wait after a hanshake or
  1128. # stream startup before the engine free the data of that flow it doesn't
  1129. # change the state to established (usually if we don't receive more packets
  1130. # of that flow). The value of "established" is the amount of
  1131. # seconds that the engine will wait to free the flow if it spend that amount
  1132. # without receiving new packets or closing the connection. "closed" is the
  1133. # amount of time to wait after a flow is closed (usually zero). "bypassed"
  1134. # timeout controls locally bypassed flows. For these flows we don't do any other
  1135. # tracking. If no packets have been seen after this timeout, the flow is discarded.
  1136. #
  1137. # There's an emergency mode that will become active under attack circumstances,
  1138. # making the engine to check flow status faster. This configuration variables
  1139. # use the prefix "emergency-" and work similar as the normal ones.
  1140. # Some timeouts doesn't apply to all the protocols, like "closed", for udp and
  1141. # icmp.
  1142.  
  1143. flow-timeouts:
  1144.  
  1145. default:
  1146. new: 30
  1147. established: 300
  1148. closed: 0
  1149. bypassed: 100
  1150. emergency-new: 10
  1151. emergency-established: 100
  1152. emergency-closed: 0
  1153. emergency-bypassed: 50
  1154. tcp:
  1155. new: 60
  1156. established: 600
  1157. closed: 60
  1158. bypassed: 100
  1159. emergency-new: 5
  1160. emergency-established: 100
  1161. emergency-closed: 10
  1162. emergency-bypassed: 50
  1163. udp:
  1164. new: 30
  1165. established: 300
  1166. bypassed: 100
  1167. emergency-new: 10
  1168. emergency-established: 100
  1169. emergency-bypassed: 50
  1170. icmp:
  1171. new: 30
  1172. established: 300
  1173. bypassed: 100
  1174. emergency-new: 10
  1175. emergency-established: 100
  1176. emergency-bypassed: 50
  1177.  
  1178. # Stream engine settings. Here the TCP stream tracking and reassembly
  1179. # engine is configured.
  1180. #
  1181. # stream:
  1182. # memcap: 32mb # Can be specified in kb, mb, gb. Just a
  1183. # # number indicates it's in bytes.
  1184. # checksum-validation: yes # To validate the checksum of received
  1185. # # packet. If csum validation is specified as
  1186. # # "yes", then packet with invalid csum will not
  1187. # # be processed by the engine stream/app layer.
  1188. # # Warning: locally generated trafic can be
  1189. # # generated without checksum due to hardware offload
  1190. # # of checksum. You can control the handling of checksum
  1191. # # on a per-interface basis via the 'checksum-checks'
  1192. # # option
  1193. # prealloc-sessions: 2k # 2k sessions prealloc'd per stream thread
  1194. # midstream: false # don't allow midstream session pickups
  1195. # async-oneside: false # don't enable async stream handling
  1196. # inline: no # stream inline mode
  1197. # drop-invalid: yes # in inline mode, drop packets that are invalid with regards to streaming engine
  1198. # max-synack-queued: 5 # Max different SYN/ACKs to queue
  1199. # bypass: no # Bypass packets when stream.depth is reached
  1200. #
  1201. # reassembly:
  1202. # memcap: 64mb # Can be specified in kb, mb, gb. Just a number
  1203. # # indicates it's in bytes.
  1204. # depth: 1mb # Can be specified in kb, mb, gb. Just a number
  1205. # # indicates it's in bytes.
  1206. # toserver-chunk-size: 2560 # inspect raw stream in chunks of at least
  1207. # # this size. Can be specified in kb, mb,
  1208. # # gb. Just a number indicates it's in bytes.
  1209. # toclient-chunk-size: 2560 # inspect raw stream in chunks of at least
  1210. # # this size. Can be specified in kb, mb,
  1211. # # gb. Just a number indicates it's in bytes.
  1212. # randomize-chunk-size: yes # Take a random value for chunk size around the specified value.
  1213. # # This lower the risk of some evasion technics but could lead
  1214. # # detection change between runs. It is set to 'yes' by default.
  1215. # randomize-chunk-range: 10 # If randomize-chunk-size is active, the value of chunk-size is
  1216. # # a random value between (1 - randomize-chunk-range/100)*toserver-chunk-size
  1217. # # and (1 + randomize-chunk-range/100)*toserver-chunk-size and the same
  1218. # # calculation for toclient-chunk-size.
  1219. # # Default value of randomize-chunk-range is 10.
  1220. #
  1221. # raw: yes # 'Raw' reassembly enabled or disabled.
  1222. # # raw is for content inspection by detection
  1223. # # engine.
  1224. #
  1225. # segment-prealloc: 2048 # number of segments preallocated per thread
  1226. #
  1227. # check-overlap-different-data: true|false
  1228. # # check if a segment contains different data
  1229. # # than what we've already seen for that
  1230. # # position in the stream.
  1231. # # This is enabled automatically if inline mode
  1232. # # is used or when stream-event:reassembly_overlap_different_data;
  1233. # # is used in a rule.
  1234. #
  1235. stream:
  1236. memcap: 64mb
  1237. checksum-validation: yes # reject wrong csums
  1238. inline: auto # auto will use inline mode in IPS mode, yes or no set it statically
  1239. reassembly:
  1240. memcap: 256mb
  1241. depth: 1mb # reassemble 1mb into a stream
  1242. toserver-chunk-size: 2560
  1243. toclient-chunk-size: 2560
  1244. randomize-chunk-size: yes
  1245. #randomize-chunk-range: 10
  1246. #raw: yes
  1247. #segment-prealloc: 2048
  1248. #check-overlap-different-data: true
  1249.  
  1250. # Host table:
  1251. #
  1252. # Host table is used by tagging and per host thresholding subsystems.
  1253. #
  1254. host:
  1255. hash-size: 4096
  1256. prealloc: 1000
  1257. memcap: 32mb
  1258.  
  1259. # IP Pair table:
  1260. #
  1261. # Used by xbits 'ippair' tracking.
  1262. #
  1263. #ippair:
  1264. # hash-size: 4096
  1265. # prealloc: 1000
  1266. # memcap: 32mb
  1267.  
  1268. # Decoder settings
  1269.  
  1270. decoder:
  1271. # Teredo decoder is known to not be completely accurate
  1272. # it will sometimes detect non-teredo as teredo.
  1273. teredo:
  1274. enabled: true
  1275.  
  1276.  
  1277. ##
  1278. ## Performance tuning and profiling
  1279. ##
  1280.  
  1281. # The detection engine builds internal groups of signatures. The engine
  1282. # allow us to specify the profile to use for them, to manage memory on an
  1283. # efficient way keeping a good performance. For the profile keyword you
  1284. # can use the words "low", "medium", "high" or "custom". If you use custom
  1285. # make sure to define the values at "- custom-values" as your convenience.
  1286. # Usually you would prefer medium/high/low.
  1287. #
  1288. # "sgh mpm-context", indicates how the staging should allot mpm contexts for
  1289. # the signature groups. "single" indicates the use of a single context for
  1290. # all the signature group heads. "full" indicates a mpm-context for each
  1291. # group head. "auto" lets the engine decide the distribution of contexts
  1292. # based on the information the engine gathers on the patterns from each
  1293. # group head.
  1294. #
  1295. # The option inspection-recursion-limit is used to limit the recursive calls
  1296. # in the content inspection code. For certain payload-sig combinations, we
  1297. # might end up taking too much time in the content inspection code.
  1298. # If the argument specified is 0, the engine uses an internally defined
  1299. # default limit. On not specifying a value, we use no limits on the recursion.
  1300. detect:
  1301. profile: medium
  1302. custom-values:
  1303. toclient-groups: 3
  1304. toserver-groups: 25
  1305. sgh-mpm-context: auto
  1306. inspection-recursion-limit: 3000
  1307. # If set to yes, the loading of signatures will be made after the capture
  1308. # is started. This will limit the downtime in IPS mode.
  1309. #delayed-detect: yes
  1310.  
  1311. prefilter:
  1312. # default prefiltering setting. "mpm" only creates MPM/fast_pattern
  1313. # engines. "auto" also sets up prefilter engines for other keywords.
  1314. # Use --list-keywords=all to see which keywords support prefiltering.
  1315. default: mpm
  1316.  
  1317. # the grouping values above control how many groups are created per
  1318. # direction. Port whitelisting forces that port to get it's own group.
  1319. # Very common ports will benefit, as well as ports with many expensive
  1320. # rules.
  1321. grouping:
  1322. #tcp-whitelist: 53, 80, 139, 443, 445, 1433, 3306, 3389, 6666, 6667, 8080
  1323. #udp-whitelist: 53, 135, 5060
  1324.  
  1325. profiling:
  1326. # Log the rules that made it past the prefilter stage, per packet
  1327. # default is off. The threshold setting determines how many rules
  1328. # must have made it past pre-filter for that rule to trigger the
  1329. # logging.
  1330. #inspect-logging-threshold: 200
  1331. grouping:
  1332. dump-to-disk: false
  1333. include-rules: false # very verbose
  1334. include-mpm-stats: false
  1335.  
  1336. # Select the multi pattern algorithm you want to run for scan/search the
  1337. # in the engine.
  1338. #
  1339. # The supported algorithms are:
  1340. # "ac" - Aho-Corasick, default implementation
  1341. # "ac-bs" - Aho-Corasick, reduced memory implementation
  1342. # "ac-cuda" - Aho-Corasick, CUDA implementation
  1343. # "ac-ks" - Aho-Corasick, "Ken Steele" variant
  1344. # "hs" - Hyperscan, available when built with Hyperscan support
  1345. #
  1346. # The default mpm-algo value of "auto" will use "hs" if Hyperscan is
  1347. # available, "ac" otherwise.
  1348. #
  1349. # The mpm you choose also decides the distribution of mpm contexts for
  1350. # signature groups, specified by the conf - "detect.sgh-mpm-context".
  1351. # Selecting "ac" as the mpm would require "detect.sgh-mpm-context"
  1352. # to be set to "single", because of ac's memory requirements, unless the
  1353. # ruleset is small enough to fit in one's memory, in which case one can
  1354. # use "full" with "ac". Rest of the mpms can be run in "full" mode.
  1355. #
  1356. # There is also a CUDA pattern matcher (only available if Suricata was
  1357. # compiled with --enable-cuda: b2g_cuda. Make sure to update your
  1358. # max-pending-packets setting above as well if you use b2g_cuda.
  1359.  
  1360. mpm-algo: auto
  1361.  
  1362. # Select the matching algorithm you want to use for single-pattern searches.
  1363. #
  1364. # Supported algorithms are "bm" (Boyer-Moore) and "hs" (Hyperscan, only
  1365. # available if Suricata has been built with Hyperscan support).
  1366. #
  1367. # The default of "auto" will use "hs" if available, otherwise "bm".
  1368.  
  1369. spm-algo: auto
  1370.  
  1371. # Suricata is multi-threaded. Here the threading can be influenced.
  1372. threading:
  1373. set-cpu-affinity: no
  1374. # Tune cpu affinity of threads. Each family of threads can be bound
  1375. # on specific CPUs.
  1376. #
  1377. # These 2 apply to the all runmodes:
  1378. # management-cpu-set is used for flow timeout handling, counters
  1379. # worker-cpu-set is used for 'worker' threads
  1380. #
  1381. # Additionally, for autofp these apply:
  1382. # receive-cpu-set is used for capture threads
  1383. # verdict-cpu-set is used for IPS verdict threads
  1384. #
  1385. cpu-affinity:
  1386. - management-cpu-set:
  1387. cpu: [ 0 ] # include only these cpus in affinity settings
  1388. - receive-cpu-set:
  1389. cpu: [ 0 ] # include only these cpus in affinity settings
  1390. - worker-cpu-set:
  1391. cpu: [ "all" ]
  1392. mode: "exclusive"
  1393. # Use explicitely 3 threads and don't compute number by using
  1394. # detect-thread-ratio variable:
  1395. # threads: 3
  1396. prio:
  1397. low: [ 0 ]
  1398. medium: [ "1-2" ]
  1399. high: [ 3 ]
  1400. default: "medium"
  1401. #- verdict-cpu-set:
  1402. # cpu: [ 0 ]
  1403. # prio:
  1404. # default: "high"
  1405. #
  1406. # By default Suricata creates one "detect" thread per available CPU/CPU core.
  1407. # This setting allows controlling this behaviour. A ratio setting of 2 will
  1408. # create 2 detect threads for each CPU/CPU core. So for a dual core CPU this
  1409. # will result in 4 detect threads. If values below 1 are used, less threads
  1410. # are created. So on a dual core CPU a setting of 0.5 results in 1 detect
  1411. # thread being created. Regardless of the setting at a minimum 1 detect
  1412. # thread will always be created.
  1413. #
  1414. detect-thread-ratio: 1.0
  1415.  
  1416. # Luajit has a strange memory requirement, it's 'states' need to be in the
  1417. # first 2G of the process' memory.
  1418. #
  1419. # 'luajit.states' is used to control how many states are preallocated.
  1420. # State use: per detect script: 1 per detect thread. Per output script: 1 per
  1421. # script.
  1422. luajit:
  1423. states: 128
  1424.  
  1425. # Profiling settings. Only effective if Suricata has been built with the
  1426. # the --enable-profiling configure flag.
  1427. #
  1428. profiling:
  1429. # Run profiling for every xth packet. The default is 1, which means we
  1430. # profile every packet. If set to 1000, one packet is profiled for every
  1431. # 1000 received.
  1432. #sample-rate: 1000
  1433.  
  1434. # rule profiling
  1435. rules:
  1436.  
  1437. # Profiling can be disabled here, but it will still have a
  1438. # performance impact if compiled in.
  1439. enabled: yes
  1440. filename: rule_perf.log
  1441. append: yes
  1442.  
  1443. # Sort options: ticks, avgticks, checks, matches, maxticks
  1444. # If commented out all the sort options will be used.
  1445. #sort: avgticks
  1446.  
  1447. # Limit the number of sids for which stats are shown at exit (per sort).
  1448. limit: 10
  1449.  
  1450. # output to json
  1451. json: yes
  1452.  
  1453. # per keyword profiling
  1454. keywords:
  1455. enabled: yes
  1456. filename: keyword_perf.log
  1457. append: yes
  1458.  
  1459. # per rulegroup profiling
  1460. rulegroups:
  1461. enabled: yes
  1462. filename: rule_group_perf.log
  1463. append: yes
  1464.  
  1465. # packet profiling
  1466. packets:
  1467.  
  1468. # Profiling can be disabled here, but it will still have a
  1469. # performance impact if compiled in.
  1470. enabled: yes
  1471. filename: packet_stats.log
  1472. append: yes
  1473.  
  1474. # per packet csv output
  1475. csv:
  1476.  
  1477. # Output can be disabled here, but it will still have a
  1478. # performance impact if compiled in.
  1479. enabled: no
  1480. filename: packet_stats.csv
  1481.  
  1482. # profiling of locking. Only available when Suricata was built with
  1483. # --enable-profiling-locks.
  1484. locks:
  1485. enabled: no
  1486. filename: lock_stats.log
  1487. append: yes
  1488.  
  1489. pcap-log:
  1490. enabled: no
  1491. filename: pcaplog_stats.log
  1492. append: yes
  1493.  
  1494. ##
  1495. ## Netfilter integration
  1496. ##
  1497.  
  1498. # When running in NFQ inline mode, it is possible to use a simulated
  1499. # non-terminal NFQUEUE verdict.
  1500. # This permit to do send all needed packet to suricata via this a rule:
  1501. # iptables -I FORWARD -m mark ! --mark $MARK/$MASK -j NFQUEUE
  1502. # And below, you can have your standard filtering ruleset. To activate
  1503. # this mode, you need to set mode to 'repeat'
  1504. # If you want packet to be sent to another queue after an ACCEPT decision
  1505. # set mode to 'route' and set next-queue value.
  1506. # On linux >= 3.1, you can set batchcount to a value > 1 to improve performance
  1507. # by processing several packets before sending a verdict (worker runmode only).
  1508. # On linux >= 3.6, you can set the fail-open option to yes to have the kernel
  1509. # accept the packet if suricata is not able to keep pace.
  1510. # bypass mark and mask can be used to implement NFQ bypass. If bypass mark is
  1511. # set then the NFQ bypass is activated. Suricata will set the bypass mark/mask
  1512. # on packet of a flow that need to be bypassed. The Nefilter ruleset has to
  1513. # directly accept all packets of a flow once a packet has been marked.
  1514. nfq:
  1515. # mode: accept
  1516. # repeat-mark: 1
  1517. # repeat-mask: 1
  1518. # bypass-mark: 1
  1519. # bypass-mask: 1
  1520. # route-queue: 2
  1521. # batchcount: 20
  1522. # fail-open: yes
  1523.  
  1524. #nflog support
  1525. nflog:
  1526. # netlink multicast group
  1527. # (the same as the iptables --nflog-group param)
  1528. # Group 0 is used by the kernel, so you can't use it
  1529. - group: 2
  1530. # netlink buffer size
  1531. buffer-size: 18432
  1532. # put default value here
  1533. - group: default
  1534. # set number of packet to queue inside kernel
  1535. qthreshold: 1
  1536. # set the delay before flushing packet in the queue inside kernel
  1537. qtimeout: 100
  1538. # netlink max buffer size
  1539. max-size: 20000
  1540.  
  1541. ##
  1542. ## Advanced Capture Options
  1543. ##
  1544.  
  1545. # general settings affecting packet capture
  1546. capture:
  1547. # disable NIC offloading. It's restored when Suricata exists.
  1548. # Enabled by default
  1549. #disable-offloading: false
  1550. #
  1551. # disable checksum validation. Same as setting '-k none' on the
  1552. # commandline
  1553. #checksum-validation: none
  1554.  
  1555. # Netmap support
  1556. #
  1557. # Netmap operates with NIC directly in driver, so you need FreeBSD wich have
  1558. # built-in netmap support or compile and install netmap module and appropriate
  1559. # NIC driver on your Linux system.
  1560. # To reach maximum throughput disable all receive-, segmentation-,
  1561. # checksum- offloadings on NIC.
  1562. # Disabling Tx checksum offloading is *required* for connecting OS endpoint
  1563. # with NIC endpoint.
  1564. # You can find more information at https://github.com/luigirizzo/netmap
  1565. #
  1566. netmap:
  1567. # To specify OS endpoint add plus sign at the end (e.g. "eth0+")
  1568. - interface: eth2
  1569. # Number of receive threads. "auto" uses number of RSS queues on interface.
  1570. #threads: auto
  1571. # You can use the following variables to activate netmap tap or IPS mode.
  1572. # If copy-mode is set to ips or tap, the traffic coming to the current
  1573. # interface will be copied to the copy-iface interface. If 'tap' is set, the
  1574. # copy is complete. If 'ips' is set, the packet matching a 'drop' action
  1575. # will not be copied.
  1576. # To specify the OS as the copy-iface (so the OS can route packets, or forward
  1577. # to a service running on the same machine) add a plus sign at the end
  1578. # (e.g. "copy-iface: eth0+"). Don't forget to set up a symmetrical eth0+ -> eth0
  1579. # for return packets. Hardware checksumming must be *off* on the interface if
  1580. # using an OS endpoint (e.g. 'ifconfig eth0 -rxcsum -txcsum -rxcsum6 -txcsum6' for FreeBSD
  1581. # or 'ethtool -K eth0 tx off rx off' for Linux).
  1582. #copy-mode: tap
  1583. #copy-iface: eth3
  1584. # Set to yes to disable promiscuous mode
  1585. # disable-promisc: no
  1586. # Choose checksum verification mode for the interface. At the moment
  1587. # of the capture, some packets may be with an invalid checksum due to
  1588. # offloading to the network card of the checksum computation.
  1589. # Possible values are:
  1590. # - yes: checksum validation is forced
  1591. # - no: checksum validation is disabled
  1592. # - auto: suricata uses a statistical approach to detect when
  1593. # checksum off-loading is used.
  1594. # Warning: 'checksum-validation' must be set to yes to have any validation
  1595. #checksum-checks: auto
  1596. # BPF filter to apply to this interface. The pcap filter syntax apply here.
  1597. #bpf-filter: port 80 or udp
  1598. #- interface: eth3
  1599. #threads: auto
  1600. #copy-mode: tap
  1601. #copy-iface: eth2
  1602. # Put default values here
  1603. - interface: default
  1604.  
  1605. # PF_RING configuration. for use with native PF_RING support
  1606. # for more info see http://www.ntop.org/products/pf_ring/
  1607. pfring:
  1608. - interface: eth0
  1609. # Number of receive threads (>1 will enable experimental flow pinned
  1610. # runmode)
  1611. threads: 1
  1612.  
  1613. # Default clusterid. PF_RING will load balance packets based on flow.
  1614. # All threads/processes that will participate need to have the same
  1615. # clusterid.
  1616. cluster-id: 99
  1617.  
  1618. # Default PF_RING cluster type. PF_RING can load balance per flow.
  1619. # Possible values are cluster_flow or cluster_round_robin.
  1620. cluster-type: cluster_flow
  1621. # bpf filter for this interface
  1622. #bpf-filter: tcp
  1623. # Choose checksum verification mode for the interface. At the moment
  1624. # of the capture, some packets may be with an invalid checksum due to
  1625. # offloading to the network card of the checksum computation.
  1626. # Possible values are:
  1627. # - rxonly: only compute checksum for packets received by network card.
  1628. # - yes: checksum validation is forced
  1629. # - no: checksum validation is disabled
  1630. # - auto: suricata uses a statistical approach to detect when
  1631. # checksum off-loading is used. (default)
  1632. # Warning: 'checksum-validation' must be set to yes to have any validation
  1633. #checksum-checks: auto
  1634. # Second interface
  1635. #- interface: eth1
  1636. # threads: 3
  1637. # cluster-id: 93
  1638. # cluster-type: cluster_flow
  1639. # Put default values here
  1640. - interface: default
  1641. #threads: 2
  1642.  
  1643. # For FreeBSD ipfw(8) divert(4) support.
  1644. # Please make sure you have ipfw_load="YES" and ipdivert_load="YES"
  1645. # in /etc/loader.conf or kldload'ing the appropriate kernel modules.
  1646. # Additionally, you need to have an ipfw rule for the engine to see
  1647. # the packets from ipfw. For Example:
  1648. #
  1649. # ipfw add 100 divert 8000 ip from any to any
  1650. #
  1651. # The 8000 above should be the same number you passed on the command
  1652. # line, i.e. -d 8000
  1653. #
  1654. ipfw:
  1655.  
  1656. # Reinject packets at the specified ipfw rule number. This config
  1657. # option is the ipfw rule number AT WHICH rule processing continues
  1658. # in the ipfw processing system after the engine has finished
  1659. # inspecting the packet for acceptance. If no rule number is specified,
  1660. # accepted packets are reinjected at the divert rule which they entered
  1661. # and IPFW rule processing continues. No check is done to verify
  1662. # this will rule makes sense so care must be taken to avoid loops in ipfw.
  1663. #
  1664. ## The following example tells the engine to reinject packets
  1665. # back into the ipfw firewall AT rule number 5500:
  1666. #
  1667. # ipfw-reinjection-rule-number: 5500
  1668.  
  1669.  
  1670. napatech:
  1671. # The Host Buffer Allowance for all streams
  1672. # (-1 = OFF, 1 - 100 = percentage of the host buffer that can be held back)
  1673. # This may be enabled when sharing streams with another application.
  1674. # Otherwise, it should be turned off.
  1675. hba: -1
  1676.  
  1677. # use_all_streams set to "yes" will query the Napatech service for all configured
  1678. # streams and listen on all of them. When set to "no" the streams config array
  1679. # will be used.
  1680. use-all-streams: yes
  1681.  
  1682. # The streams to listen on. This can be either:
  1683. # a list of individual streams (e.g. streams: [0,1,2,3])
  1684. # or
  1685. # a range of streams (e.g. streams: ["0-3"])
  1686. streams: ["0-3"]
  1687.  
  1688. # Tilera mpipe configuration. for use on Tilera TILE-Gx.
  1689. mpipe:
  1690.  
  1691. # Load balancing modes: "static", "dynamic", "sticky", or "round-robin".
  1692. load-balance: dynamic
  1693.  
  1694. # Number of Packets in each ingress packet queue. Must be 128, 512, 2028 or 65536
  1695. iqueue-packets: 2048
  1696.  
  1697. # List of interfaces we will listen on.
  1698. inputs:
  1699. - interface: xgbe2
  1700. - interface: xgbe3
  1701. - interface: xgbe4
  1702.  
  1703.  
  1704. # Relative weight of memory for packets of each mPipe buffer size.
  1705. stack:
  1706. size128: 0
  1707. size256: 9
  1708. size512: 0
  1709. size1024: 0
  1710. size1664: 7
  1711. size4096: 0
  1712. size10386: 0
  1713. size16384: 0
  1714.  
  1715. ##
  1716. ## Hardware accelaration
  1717. ##
  1718.  
  1719. # Cuda configuration.
  1720. cuda:
  1721. # The "mpm" profile. On not specifying any of these parameters, the engine's
  1722. # internal default values are used, which are same as the ones specified in
  1723. # in the default conf file.
  1724. mpm:
  1725. # The minimum length required to buffer data to the gpu.
  1726. # Anything below this is MPM'ed on the CPU.
  1727. # Can be specified in kb, mb, gb. Just a number indicates it's in bytes.
  1728. # A value of 0 indicates there's no limit.
  1729. data-buffer-size-min-limit: 0
  1730. # The maximum length for data that we would buffer to the gpu.
  1731. # Anything over this is MPM'ed on the CPU.
  1732. # Can be specified in kb, mb, gb. Just a number indicates it's in bytes.
  1733. data-buffer-size-max-limit: 1500
  1734. # The ring buffer size used by the CudaBuffer API to buffer data.
  1735. cudabuffer-buffer-size: 500mb
  1736. # The max chunk size that can be sent to the gpu in a single go.
  1737. gpu-transfer-size: 50mb
  1738. # The timeout limit for batching of packets in microseconds.
  1739. batching-timeout: 2000
  1740. # The device to use for the mpm. Currently we don't support load balancing
  1741. # on multiple gpus. In case you have multiple devices on your system, you
  1742. # can specify the device to use, using this conf. By default we hold 0, to
  1743. # specify the first device cuda sees. To find out device-id associated with
  1744. # the card(s) on the system run "suricata --list-cuda-cards".
  1745. device-id: 0
  1746. # No of Cuda streams used for asynchronous processing. All values > 0 are valid.
  1747. # For this option you need a device with Compute Capability > 1.0.
  1748. cuda-streams: 2
  1749.  
  1750. ##
  1751. ## Include other configs
  1752. ##
  1753.  
  1754. # Includes. Files included here will be handled as if they were
  1755. # inlined in this configuration file.
  1756. #include: include1.yaml
  1757. #include: include2.yaml
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