forked from OISF/suricata
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathsuricata.yaml.in
2170 lines (1956 loc) · 83.1 KB
/
suricata.yaml.in
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
%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
SIP_PORTS: "[5060, 5061]"
##
## 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
# payload-buffer-size: 4kb # max size of frame payload buffer to output in eve-log
- 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. 2 modes of operation: "normal"
# and "multi".
#
# 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.
#
# 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.
# 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 or multi
# Directory to place pcap files. If not provided the default log
# directory will be used.
#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
# interrupt-mode: false # true to switch to interrupt mode
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