diff --git a/docker/suricata/Dockerfile.from.source b/docker/suricata/Dockerfile.from.source index 59c2687a..6dcfe1f8 100644 --- a/docker/suricata/Dockerfile.from.source +++ b/docker/suricata/Dockerfile.from.source @@ -1,7 +1,7 @@ FROM alpine # # VARS -ENV VER=5.0.2 +ENV VER=6.0.0 # # Include dist ADD dist/ /root/dist/ diff --git a/docker/suricata/dist/suricata.yaml b/docker/suricata/dist/suricata.yaml index a133199b..72d4fae9 100644 --- a/docker/suricata/dist/suricata.yaml +++ b/docker/suricata/dist/suricata.yaml @@ -6,7 +6,7 @@ # https://suricata.readthedocs.io/en/latest/configuration/suricata-yaml.html ## -## Step 1: inform Suricata about your network +## Step 1: Inform Suricata about your network ## vars: @@ -49,21 +49,21 @@ vars: TEREDO_PORTS: 3544 ## -## Step 2: select outputs to enable +## Step 2: Select outputs to enable ## # The default logging directory. Any log or output file will be -# placed here if its not specified with a full path name. This can be +# 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: /var/log/suricata/ -# global stats configuration +# Global stats configuration stats: enabled: no - # The interval field (in seconds) controls at what interval - # the loggers are invoked. + # The interval field (in seconds) controls the interval at + # which stats are updated in the log. interval: 8 - # Add decode events as stats. + # 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. @@ -85,12 +85,16 @@ outputs: enabled: yes filetype: regular #regular|syslog|unix_dgram|unix_stream|redis filename: eve.json + # Enable for multi-threaded eve.json output; output files are amended with + # 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 @@ -102,10 +106,10 @@ outputs: # 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 as to be reserved to high traffic suricata. + # 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 entry to keep in buffer + # batch-size: 10 ## number of entries to keep in buffer # Include top level metadata. Default yes. #metadata: no @@ -115,8 +119,8 @@ outputs: # Community Flow ID # Adds a 'community_id' field to EVE records. These are meant to give - # a records a predictable flow id that can be used to match records to - # output of other tools such as Bro. + # 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. @@ -133,13 +137,13 @@ outputs: # or forward proxied. xff: enabled: yes - # Two operation modes are available, "extra-data" and "overwrite". + # Two operation modes are available: "extra-data" and "overwrite". mode: extra-data - # Two proxy deployments are supported, "reverse" and "forward". In + # 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 + # 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 @@ -151,8 +155,8 @@ outputs: 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 + 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. @@ -179,9 +183,9 @@ outputs: # specific conditions that are unexpected, invalid or are # unexpected given the application monitoring state. # - # By default, anomaly logging is disabled. When anomaly + # By default, anomaly logging is enabled. When anomaly # logging is enabled, applayer anomaly reporting is - # enabled. + # also enabled. enabled: yes # # Choose one or more types of anomaly logging and whether to enable @@ -193,11 +197,11 @@ outputs: #packethdr: no - http: extended: yes # enable this for extended logging information - # custom allows additional http fields to be included in eve-log + # 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, Forwarded, From, Referer, Via] - # set this value to one and only one among {both, request, response} - # to dump all http headers for every http request and/or response + # 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, @@ -224,7 +228,7 @@ outputs: # Default: all #formats: [detailed, grouped] - # Types to log, based on the query type. + # DNS record types to log, based on the query type. # Default: all. #types: [a, aaaa, cname, mx, ns, ptr, txt] - tls: @@ -232,8 +236,7 @@ outputs: # output TLS transaction where the session is resumed using a # session id #session-resumption: no - # custom allows to control which tls fields that are included - # in eve-log + # 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, ja3, ja3s] - files: force-magic: yes # force logging magic on all logged files @@ -264,8 +267,10 @@ outputs: - smb - tftp - ikev2 + - dcerpc - krb5 - snmp + - rfb - sip - dhcp: enabled: no @@ -275,6 +280,12 @@ outputs: # to an IP address is logged. extended: no - ssh + - mqtt: + # passwords: yes # enable output of passwords + # HTTP2 logging. HTTP2 support is currently experimental and + # disabled by default. To enable, uncomment the following line + # and be sure to enable http2 in the app-layer section. + #- http2 #- stats: #totals: yes # stats for all threads merged together #threads: no # per thread stats @@ -289,19 +300,13 @@ outputs: # flowints. #- metadata - # deprecated - unified2 alert format for use with Barnyard2 - - unified2-alert: - enabled: no - # for further options see: - # https://suricata.readthedocs.io/en/suricata-5.0.0/configuration/suricata-yaml.html#alert-output-for-use-with-barnyard2-unified2-alert - # a line based log of HTTP requests (no alerts) - http-log: enabled: no filename: http.log append: yes #extended: yes # enable this for extended logging information - #custom: yes # enabled the custom logging format (defined by customformat) + #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' @@ -327,7 +332,7 @@ outputs: # "multi" and "sguil". # # In normal mode a pcap file "filename" is created in the default-log-dir, - # or are as specified by "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: @@ -345,7 +350,7 @@ outputs: # is: 8*1000*2000 ~ 16TiB. # # In Sguil mode "dir" indicates the base directory. In this base dir the - # pcaps are created in th directory structure Sguil expects: + # pcaps are created in the directory structure Sguil expects: # # $sguil-base-dir/YYYY-MM-DD/$filename. # @@ -361,7 +366,8 @@ outputs: # is parsed as bytes. limit: 1000mb - # If set to a value will enable ring buffer mode. Will keep Maximum of "max-files" of size "limit" + # 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. @@ -383,9 +389,9 @@ outputs: #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 stopped being logged. + honor-pass-rules: no # If set to "yes", flows in which a pass rule matched will stop being logged. - # a full alerts log containing much information for signature writers + # a full alert log containing much information for signature writers # or for investigating suspected false positives. - alert-debug: enabled: no @@ -408,35 +414,29 @@ outputs: 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 + #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 ommited the program name (usually + # 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 - # deprecated a line based information for dropped packets in IPS mode - - drop: - enabled: no - # further options documented at: - # https://suricata.readthedocs.io/en/suricata-5.0.0/configuration/suricata-yaml.html#drop-log-a-line-based-information-for-dropped-packets - - # Output module for storing files on disk. Files are stored in a + # 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 existing file is touched to - # have its timestamps updated. + # When a duplicate file is found, the timestamps on the existing file + # are updated. # - # Unlike the older filestore, metadata is not written out by default + # 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, the each file will have - # one more associated .json files that consists of the fileinfo + # 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. # @@ -446,12 +446,12 @@ outputs: version: 2 enabled: no - # Set the directory for the filestore. If the path is not - # absolute will be be relative to the default-log-dir. + # 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 + # 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 @@ -459,15 +459,16 @@ outputs: #force-filestore: yes # Override the global stream-depth for sessions in which we want - # to perform file extraction. Set to 0 for unlimited. + # 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 + # means files get closed after each write to the file. #max-open-files: 1000 - # Force logging of checksums, available hash functions are md5, + # 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. @@ -486,32 +487,30 @@ outputs: # 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 + # 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 - # deprecated - file-store v1 - - file-store: - enabled: no - # further options documented at: - # https://suricata.readthedocs.io/en/suricata-5.0.0/file-extraction/file-extraction.html#file-store-version-1 - # Log TCP data after stream normalization - # 2 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. - # Using 'both' will enable both file and dir modes. + # 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 + # Note: limited by "stream.reassembly.depth" - tcp-data: enabled: no type: file filename: tcp-data.log - # Log HTTP body data after normalization, dechunking and unzipping. - # 2 types: file or dir. File logs into a single logfile. Dir creates - # 2 files per HTTP session and stores the normalized data into them. - # Using 'both' will enable both file and dir modes. + # 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: @@ -532,7 +531,7 @@ outputs: # 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. + # 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. # @@ -553,7 +552,7 @@ logging: default-output-filter: # Define your logging outputs. If none are defined, or they are all - # disabled you will get the default - console output. + # disabled you will get the default: console output. outputs: - console: enabled: yes @@ -571,9 +570,9 @@ logging: ## -## Step 4: configure common capture settings +## Step 3: Configure common capture settings ## -## See "Advanced Capture Options" below for more options, including NETMAP +## See "Advanced Capture Options" below for more options, including Netmap ## and PF_RING. ## @@ -587,30 +586,30 @@ af-packet: # 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 send to the same socket - # * cluster_cpu: all packets treated in kernel by a CPU are send to the same socket + # * 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 (require cpu affinity tuning and system irq tuning) + # with capture card using RSS (requires cpu affinity tuning and system IRQ tuning) cluster-type: cluster_flow - # In some fragmentation case, the hash can not be computed. If "defrag" is set + # 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 goes to swap. Be careful that over subscribing could lock - # your system + # 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 + # Ring size will be computed with respect to "max-pending-packets" and number # of threads. You can set manually the ring size in number of packets by setting - # the following value. If you are using flow cluster-type and have really network - # intensive single-flow you could want to set the ring-size independently of the number + # 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 @@ -620,25 +619,25 @@ af-packet: # 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 system, this could help to set it to yes to recover from a packet drop - # phase. This will result in some packets (at max a ring flush) being non treated. + # 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, increase value could improve performance + # 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 be with an invalid checksum due to - # offloading to the network card of the checksum computation. + # 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 + # - auto: Suricata uses a statistical approach to detect when # checksum off-loading is used. - # Warning: 'checksum-validation' must be set to yes to have any validation + # 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 apply here. + # 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 @@ -660,22 +659,22 @@ af-packet: # Cross platform libpcap capture support pcap: - interface: eth0 - # On Linux, pcap will try to use mmaped capture and will use buffer-size - # as total of memory used by the ring. So set this to something bigger + # 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 be with an invalid checksum due to - # offloading to the network card of the checksum computation. + # 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: 'checksum-validation' must be set to yes to have any validation + # 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 + # 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. @@ -699,15 +698,15 @@ pcap-file: # 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 +# See "Advanced Capture Options" below for more options, including Netmap # and PF_RING. ## -## Step 5: App Layer Protocol Configuration +## Step 4: App Layer Protocol configuration ## -# Configure the app-layer parsers. The protocols section details each +# Configure the app-layer parsers. The protocol's section details each # protocol. # # The option "enabled" takes 3 values - "yes", "no", "detection-only". @@ -715,6 +714,14 @@ pcap-file: # "detection-only" enables protocol detection only (parser disabled). app-layer: protocols: + rfb: + enabled: yes + detection-ports: + dp: 5900, 5901, 5902, 5903, 5904, 5905, 5906, 5907, 5908, 5909 + # MQTT, disabled by default. + mqtt: + # enabled: no + # max-msg-length: 1mb krb5: enabled: yes snmp: @@ -749,11 +756,14 @@ app-layer: ftp: enabled: yes # memcap: 64mb - # RDP, disabled by default. rdp: enabled: yes ssh: enabled: yes + hassh: yes + # HTTP2: Experimental HTTP 2 support. Disabled by default. + http2: + enabled: no smtp: enabled: yes raw-extraction: no @@ -761,11 +771,11 @@ app-layer: mime: # Decode MIME messages from SMTP transactions # (may be resource intensive) - # This field supercedes all others because it turns the entire + # 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 MIME entity bodies (ie. Base64, quoted-printable, etc.) decode-base64: yes decode-quoted-printable: yes @@ -798,14 +808,6 @@ app-layer: tftp: enabled: yes dns: - # memcaps. Globally and per flow/state. - global-memcap: 16mb - state-memcap: 512kb - - # How many unreplied DNS requests are considered a flood. - # If the limit is reached, app-layer-event:dns.flooded; will match. - request-flood: 500 - tcp: enabled: yes detection-ports: @@ -816,8 +818,8 @@ app-layer: dp: 53 http: enabled: yes - # memcap: Maximum memory capacity for http - # Default is unlimited, value can be such as 64mb + # memcap: Maximum memory capacity for HTTP + # Default is unlimited, values can be 64mb, e.g. # default-config: Used when no server-config matches # personality: List of personalities used by default @@ -831,7 +833,7 @@ app-layer: # server-config: List of server configurations to use if address matches # address: List of IP addresses or networks for this block - # personalitiy: List of personalities used by this block + # personality: List of personalities used by this block # # Then, all the fields from default-config can be overloaded # @@ -860,7 +862,7 @@ app-layer: http-body-inline: auto # Decompress SWF files. - # 2 types: 'deflate', 'lzma', 'both' will decompress deflate and lzma + # Two types: 'deflate', 'lzma', 'both' will decompress deflate and lzma # compress-depth: # Specifies the maximum amount of data to decompress, # set 0 for unlimited. @@ -873,22 +875,22 @@ app-layer: compress-depth: 0 decompress-depth: 0 - # Take a random value for inspection sizes around the specified value. - # This lower the risk of some evasion technics but could lead - # detection change between runs. It is set to 'yes' by default. + # Use a random value for inspection sizes around the specified value. + # This lowers the risk of some evasion techniques but could lead + # to detection change between runs. It is set to 'yes' by default. #randomize-inspection-sizes: yes - # If randomize-inspection-sizes is active, the value of various - # inspection size will be choosen in the [1 - range%, 1 + range%] + # If "randomize-inspection-sizes" is active, the value of various + # inspection size will be chosen from the [1 - range%, 1 + range%] # range - # Default value of randomize-inspection-range is 10. + # Default value of "randomize-inspection-range" is 10. #randomize-inspection-range: 10 # decoding double-decode-path: no double-decode-query: no - # Can disable LZMA decompression - #lzma-enabled: yes + # Can enable LZMA decompression + #lzma-enabled: false # Memory limit usage for LZMA decompression dictionary # Data is decompressed until dictionary reaches this size #lzma-memlimit: 1mb @@ -920,14 +922,14 @@ app-layer: # double-decode-path: no # double-decode-query: no - # Note: Modbus probe parser is minimalist due to the poor significant field + # Note: Modbus probe parser is minimalist due to the limited usage in the field. # Only Modbus message length (greater than Modbus header length) - # And Protocol ID (equal to 0) are checked in probing parser + # and protocol ID (equal to 0) are checked in probing parser # It is important to enable detection port and define Modbus port - # to avoid false positive + # to avoid false positives modbus: - # How many unreplied Modbus requests are considered a flood. - # If the limit is reached, app-layer-event:modbus.flooded; will match. + # How many unanswered Modbus requests are considered a flood. + # If the limit is reached, the app-layer-event:modbus.flooded; will match. #request-flood: 500 enabled: yes @@ -961,13 +963,19 @@ app-layer: dhcp: enabled: no - # SIP, disabled by default. sip: enabled: yes # Limit for the maximum number of asn1 frames to decode (default 256) asn1-max-frames: 256 +# Datasets default settings +# datasets: +# # Default fallback memcap and hashsize values for datasets in case these +# # were not explicitly defined. +# defaults: +# memcap: 100mb +# hashsize: 2048 ############################################################################## ## @@ -979,12 +987,12 @@ asn1-max-frames: 256 ## Run Options ## -# Run suricata as user and group. +# Run Suricata with a specific user-id and group-id: #run-as: # user: suri # group: suri -# Some logging module will use that name in event as identifier. The default +# Some logging modules will use that name in event as identifier. The default # value is the hostname #sensor-name: suricata @@ -1015,9 +1023,9 @@ asn1-max-frames: 256 coredump: max-dump: unlimited -# If Suricata box is a router for the sniffed networks, set it to 'router'. If +# If the Suricata box is a router for the sniffed networks, set it to 'router'. If # it is a pure sniffing setup, set it to 'sniffer-only'. -# If set to auto, the variable is internally switch to 'router' in IPS mode +# If set to auto, the variable is internally switched to 'router' in IPS mode # and 'sniffer-only' in IDS mode. # This feature is currently only used by the reject* keywords. host-mode: auto @@ -1041,12 +1049,12 @@ host-mode: auto # #autofp-scheduler: hash -# Preallocated size for packet. Default is 1514 which is the classical -# size for pcap on ethernet. You should adjust this value to the highest +# Preallocated size for each packet. Default is 1514 which is the classical +# size for pcap on Ethernet. You should adjust this value to the highest # packet size (MTU + hardware header) on your system. #default-packet-size: 1514 -# Unix command socket can be used to pass commands to Suricata. +# Unix command socket that can be used to pass commands to Suricata. # An external tool can then connect to get information from Suricata # or trigger some modifications of the engine. Set enabled to yes # to activate the feature. In auto mode, the feature will only be @@ -1152,19 +1160,19 @@ defrag: # By default, the reserved memory (memcap) for flows is 32MB. This is the limit # for flow allocation inside the engine. You can change this value to allow # more memory usage for flows. -# The hash-size determine the size of the hash used to identify flows inside +# The hash-size determines the size of the hash used to identify flows inside # the engine, and by default the value is 65536. -# At the startup, the engine can preallocate a number of flows, to get a better +# At startup, the engine can preallocate a number of flows, to get better # performance. The number of flows preallocated is 10000 by default. -# emergency-recovery is the percentage of flows that the engine need to -# prune before unsetting the emergency state. The emergency state is activated -# when the memcap limit is reached, allowing to create new flows, but +# emergency-recovery is the percentage of flows that the engine needs to +# prune before clearing the emergency state. The emergency state is activated +# when the memcap limit is reached, allowing new flows to be created, but # pruning them with the emergency timeouts (they are defined below). # If the memcap is reached, the engine will try to prune flows # with the default timeouts. If it doesn't find a flow to prune, it will set # the emergency bit and it will try again with more aggressive timeouts. -# If that doesn't work, then it will try to kill the last time seen flows -# not in use. +# If that doesn't work, then it will try to kill the oldest flows using +# last time seen flows. # The memcap can be specified in kb, mb, gb. Just a number indicates it's # in bytes. @@ -1176,20 +1184,20 @@ flow: #managers: 1 # default to one flow manager #recyclers: 1 # default to one flow recycler thread -# This option controls the use of vlan ids in the flow (and defrag) +# This option controls the use of VLAN ids in the flow (and defrag) # hashing. Normally this should be enabled, but in some (broken) -# setups where both sides of a flow are not tagged with the same vlan -# tag, we can ignore the vlan id's in the flow hashing. +# setups where both sides of a flow are not tagged with the same VLAN +# tag, we can ignore the VLAN id's in the flow hashing. vlan: use-for-tracking: true # Specific timeouts for flows. Here you can specify the timeouts that the # active flows will wait to transit from the current state to another, on each -# protocol. The value of "new" determine the seconds to wait after a handshake or -# stream startup before the engine free the data of that flow it doesn't +# protocol. The value of "new" determines the seconds to wait after a handshake or +# stream startup before the engine frees the data of that flow it doesn't # change the state to established (usually if we don't receive more packets # of that flow). The value of "established" is the amount of -# seconds that the engine will wait to free the flow if it spend that amount +# seconds that the engine will wait to free the flow if that time elapses # without receiving new packets or closing the connection. "closed" is the # amount of time to wait after a flow is closed (usually zero). "bypassed" # timeout controls locally bypassed flows. For these flows we don't do any other @@ -1244,7 +1252,7 @@ flow-timeouts: # # number indicates it's in bytes. # checksum-validation: yes # To validate the checksum of received # # packet. If csum validation is specified as -# # "yes", then packet with invalid csum will not +# # "yes", then packets with invalid csum values will not # # be processed by the engine stream/app layer. # # Warning: locally generated traffic can be # # generated without checksum due to hardware offload @@ -1273,8 +1281,8 @@ flow-timeouts: # # this size. Can be specified in kb, mb, # # gb. Just a number indicates it's in bytes. # randomize-chunk-size: yes # Take a random value for chunk size around the specified value. -# # This lower the risk of some evasion technics but could lead -# # detection change between runs. It is set to 'yes' by default. +# # This lowers the risk of some evasion techniques but could lead +# # to detection change between runs. It is set to 'yes' by default. # randomize-chunk-range: 10 # If randomize-chunk-size is active, the value of chunk-size is # # a random value between (1 - randomize-chunk-range/100)*toserver-chunk-size # # and (1 + randomize-chunk-range/100)*toserver-chunk-size and the same @@ -1297,7 +1305,7 @@ flow-timeouts: # stream: memcap: 64mb - checksum-validation: yes # reject wrong csums + checksum-validation: yes # reject incorrect csums inline: auto # auto will use inline mode in IPS mode, yes or no set it statically reassembly: memcap: 256mb @@ -1312,7 +1320,7 @@ stream: # Host table: # -# Host table is used by tagging and per host thresholding subsystems. +# Host table is used by the tagging and per host thresholding subsystems. # host: hash-size: 4096 @@ -1343,16 +1351,12 @@ decoder: # IANA assigned port 4789 is enabled. vxlan: enabled: true - ports: $VXLAN_PORTS # syntax: '8472, 4789' - # ERSPAN Type I decode support - erspan: - typeI: - enabled: false + ports: $VXLAN_PORTS # syntax: '[8472, 4789]' or '4789'. # Geneve decoder is assigned to up to 4 UDP ports. By default only the # IANA assigned port 6081 is enabled. geneve: - enabled: false + enabled: true ports: $GENEVE_PORTS # syntax: '[6081, 1234]' or '6081'. ## @@ -1360,10 +1364,10 @@ decoder: ## # The detection engine builds internal groups of signatures. The engine -# allow us to specify the profile to use for them, to manage memory on an -# efficient way keeping a good performance. For the profile keyword you -# can use the words "low", "medium", "high" or "custom". If you use custom -# make sure to define the values at "- custom-values" as your convenience. +# allows us to specify the profile to use for them, to manage memory in an +# efficient way keeping good performance. For the profile keyword you +# can use the words "low", "medium", "high" or "custom". If you use custom, +# make sure to define the values in the "custom-values" section. # Usually you would prefer medium/high/low. # # "sgh mpm-context", indicates how the staging should allot mpm contexts for @@ -1377,7 +1381,7 @@ decoder: # in the content inspection code. For certain payload-sig combinations, we # might end up taking too much time in the content inspection code. # If the argument specified is 0, the engine uses an internally defined -# default limit. On not specifying a value, we use no limits on the recursion. +# default limit. When a value is not specified, there are no limits on the recursion. detect: profile: medium custom-values: @@ -1396,7 +1400,7 @@ detect: default: mpm # the grouping values above control how many groups are created per - # direction. Port whitelisting forces that port to get it's own group. + # direction. Port whitelisting forces that port to get its own group. # Very common ports will benefit, as well as ports with many expensive # rules. grouping: @@ -1430,8 +1434,8 @@ detect: # signature groups, specified by the conf - "detect.sgh-mpm-context". # Selecting "ac" as the mpm would require "detect.sgh-mpm-context" # to be set to "single", because of ac's memory requirements, unless the -# ruleset is small enough to fit in one's memory, in which case one can -# use "full" with "ac". Rest of the mpms can be run in "full" mode. +# ruleset is small enough to fit in memory, in which case one can +# use "full" with "ac". The rest of the mpms can be run in "full" mode. mpm-algo: auto @@ -1448,7 +1452,7 @@ spm-algo: auto threading: set-cpu-affinity: no # Tune cpu affinity of threads. Each family of threads can be bound - # on specific CPUs. + # to specific CPUs. # # These 2 apply to the all runmodes: # management-cpu-set is used for flow timeout handling, counters @@ -1466,7 +1470,7 @@ threading: - worker-cpu-set: cpu: [ "all" ] mode: "exclusive" - # Use explicitely 3 threads and don't compute number by using + # Use explicitly 3 threads and don't compute number by using # detect-thread-ratio variable: # threads: 3 prio: @@ -1489,7 +1493,7 @@ threading: # detect-thread-ratio: 1.0 -# Luajit has a strange memory requirement, it's 'states' need to be in the +# Luajit has a strange memory requirement, its 'states' need to be in the # first 2G of the process' memory. # # 'luajit.states' is used to control how many states are preallocated. @@ -1498,11 +1502,11 @@ threading: luajit: states: 128 -# Profiling settings. Only effective if Suricata has been built with the +# Profiling settings. Only effective if Suricata has been built with # the --enable-profiling configure flag. # profiling: - # Run profiling for every xth packet. The default is 1, which means we + # Run profiling for every X-th packet. The default is 1, which means we # profile every packet. If set to 1000, one packet is profiled for every # 1000 received. #sample-rate: 1000 @@ -1578,15 +1582,15 @@ profiling: # When running in NFQ inline mode, it is possible to use a simulated # non-terminal NFQUEUE verdict. -# This permit to do send all needed packet to Suricata via this a rule: +# This permits sending all needed packet to Suricata via this rule: # iptables -I FORWARD -m mark ! --mark $MARK/$MASK -j NFQUEUE # And below, you can have your standard filtering ruleset. To activate # this mode, you need to set mode to 'repeat' -# If you want packet to be sent to another queue after an ACCEPT decision -# set mode to 'route' and set next-queue value. -# On linux >= 3.1, you can set batchcount to a value > 1 to improve performance +# If you want a packet to be sent to another queue after an ACCEPT decision +# set the mode to 'route' and set next-queue value. +# On Linux >= 3.1, you can set batchcount to a value > 1 to improve performance # by processing several packets before sending a verdict (worker runmode only). -# On linux >= 3.6, you can set the fail-open option to yes to have the kernel +# On Linux >= 3.6, you can set the fail-open option to yes to have the kernel # accept the packet if Suricata is not able to keep pace. # bypass mark and mask can be used to implement NFQ bypass. If bypass mark is # set then the NFQ bypass is activated. Suricata will set the bypass mark/mask @@ -1612,9 +1616,9 @@ nflog: buffer-size: 18432 # put default value here - group: default - # set number of packet to queue inside kernel + # set number of packets to queue inside kernel qthreshold: 1 - # set the delay before flushing packet in the queue inside kernel + # set the delay before flushing packet in the kernel's queue qtimeout: 100 # netlink max buffer size max-size: 20000 @@ -1623,7 +1627,7 @@ nflog: ## Advanced Capture Options ## -# general settings affecting packet capture +# General settings affecting packet capture capture: # disable NIC offloading. It's restored when Suricata exits. # Enabled by default. @@ -1635,12 +1639,12 @@ capture: # Netmap support # -# Netmap operates with NIC directly in driver, so you need FreeBSD 11+ which have -# built-in netmap support or compile and install netmap module and appropriate -# NIC driver on your Linux system. +# Netmap operates with NIC directly in driver, so you need FreeBSD 11+ which has +# built-in Netmap support or compile and install the Netmap module and appropriate +# NIC driver for your Linux system. # To reach maximum throughput disable all receive-, segmentation-, -# checksum- offloadings on NIC. -# Disabling Tx checksum offloading is *required* for connecting OS endpoint +# checksum- offloading on your NIC (using ethtool or similar). +# Disabling TX checksum offloading is *required* for connecting OS endpoint # with NIC endpoint. # You can find more information at https://github.com/luigirizzo/netmap # @@ -1667,8 +1671,8 @@ netmap: # Set to yes to disable promiscuous mode # disable-promisc: no # Choose checksum verification mode for the interface. At the moment - # of the capture, some packets may be with an invalid checksum due to - # offloading to the network card of the checksum computation. + # 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 @@ -1685,7 +1689,7 @@ netmap: # Put default values here - interface: default -# PF_RING configuration. for use with native PF_RING support +# PF_RING configuration: for use with native PF_RING support # for more info see http://www.ntop.org/products/pf_ring/ pfring: - interface: eth0 @@ -1706,13 +1710,13 @@ pfring: #bpf-filter: tcp # If bypass is set then the PF_RING hw bypass is activated, when supported - # by the interface in use. Suricata will instruct the interface to bypass + # by the network interface. Suricata will instruct the interface to bypass # all future packets for a flow that need to be bypassed. #bypass: yes # Choose checksum verification mode for the interface. At the moment - # of the capture, some packets may be with an invalid checksum due to - # offloading to the network card of the checksum computation. + # of the capture, some packets may have an invalid checksum due to + # the checksum computation being offloaded to the network card. # Possible values are: # - rxonly: only compute checksum for packets received by network card. # - yes: checksum validation is forced @@ -1738,8 +1742,8 @@ pfring: # # ipfw add 100 divert 8000 ip from any to any # -# The 8000 above should be the same number you passed on the command -# line, i.e. -d 8000 +# N.B. This example uses "8000" -- this number must mach the values +# you passed on the command line, i.e., -d 8000 # ipfw: @@ -1762,15 +1766,15 @@ napatech: # (-1 = OFF, 1 - 100 = percentage of the host buffer that can be held back) # This may be enabled when sharing streams with another application. # Otherwise, it should be turned off. - hba: -1 + #hba: -1 # When use_all_streams is set to "yes" the initialization code will query # the Napatech service for all configured streams and listen on all of them. # When set to "no" the streams config array will be used. # # This option necessitates running the appropriate NTPL commands to create - # the desired streams prior to running suricata. - use-all-streams: yes + # the desired streams prior to running Suricata. + #use-all-streams: no # The streams to listen on when auto-config is disabled or when and threading # cpu-affinity is disabled. This can be either: @@ -1780,21 +1784,55 @@ napatech: # streams: ["0-3"] + # Stream stats can be enabled to provide fine grain packet and byte counters + # for each thread/stream that is configured. + # + enable-stream-stats: no + # When auto-config is enabled the streams will be created and assigned # automatically to the NUMA node where the thread resides. If cpu-affinity # is enabled in the threading section. Then the streams will be created - # according to the number of worker threads specified in the worker cpu set. + # according to the number of worker threads specified in the worker-cpu-set. # Otherwise, the streams array is used to define the streams. # - # This option cannot be used simultaneous with "use-all-streams". + # This option is intended primarily to support legacy configurations. + # + # This option cannot be used simultaneously with either "use-all-streams" + # or "hardware-bypass". # auto-config: yes - # Ports indicates which napatech ports are to be used in auto-config mode. - # these are the port ID's of the ports that will be merged prior to the + # Enable hardware level flow bypass. + # + hardware-bypass: yes + + # Enable inline operation. When enabled traffic arriving on a given port is + # automatically forwarded out its peer port after analysis by Suricata. + # + inline: no + + # Ports indicates which Napatech ports are to be used in auto-config mode. + # these are the port IDs of the ports that will be merged prior to the # traffic being distributed to the streams. # - # This can be specified in any of the following ways: + # When hardware-bypass is enabled the ports must be configured as a segment. + # specify the port(s) on which upstream and downstream traffic will arrive. + # This information is necessary for the hardware to properly process flows. + # + # When using a tap configuration one of the ports will receive inbound traffic + # for the network and the other will receive outbound traffic. The two ports on a + # given segment must reside on the same network adapter. + # + # When using a SPAN-port configuration the upstream and downstream traffic + # arrives on a single port. This is configured by setting the two sides of the + # segment to reference the same port. (e.g. 0-0 to configure a SPAN port on + # port 0). + # + # port segments are specified in the form: + # ports: [0-1,2-3,4-5,6-6,7-7] + # + # For legacy systems when hardware-bypass is disabled this can be specified in any + # of the following ways: # # a list of individual ports (e.g. ports: [0,1,2,3]) # @@ -1803,9 +1841,9 @@ napatech: # "all" to indicate that all ports are to be merged together # (e.g. ports: [all]) # - # This has no effect if auto-config is disabled. + # This parameter has no effect if auto-config is disabled. # - ports: [all] + ports: [0-1,2-3] # When auto-config is enabled the hashmode specifies the algorithm for # determining to which stream a given packet is to be delivered. @@ -1816,16 +1854,13 @@ napatech: # # See Napatech NTPL documentation other hashmodes and details on their use. # - # This has no effect if auto-config is disabled. + # This parameter has no effect if auto-config is disabled. # hashmode: hash5tuplesorted ## ## Configure Suricata to load Suricata-Update managed rules. ## -## If this section is completely commented out move down to the "Advanced rule -## file configuration". -## #default-rule-path: /var/lib/suricata/rules default-rule-path: /etc/suricata/rules @@ -1906,7 +1941,10 @@ reference-config-file: /etc/suricata/reference.config ## Include other configs ## -# Includes. Files included here will be handled as if they were -# inlined in this configuration file. +# Includes: Files included here will be handled as if they were in-lined +# in this configuration file. Files with relative pathnames will be +# searched for in the same directory as this configuration file. You may +# use absolute pathnames too. +# You can specify more than 2 configuration files, if needed. #include: include1.yaml #include: include2.yaml