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%YAML 1.1
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---
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# Number of packets allowed to be processed simultaneously. Default is a
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# conservative 50. a higher number will make sure CPU's/CPU cores will be
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# more easily kept busy, but will negatively impact caching.
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#
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# If you are using the CUDA pattern matcher (b2g_cuda below), different rules
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# apply. In that case try something like 4000 or more. This is because the CUDA
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# pattern matcher scans many packets in parallel.
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#max-pending-packets: 50
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# Set the order of alerts bassed on actions
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# The default order is pass, drop, reject, alert
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action-order:
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- pass
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- drop
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- reject
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- alert
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# The default logging directory. Any log or output file will be
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# placed here if its not specified with a full path name. This can be
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# overridden with the -l command line parameter.
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default-log-dir: /var/log/suricata
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# Configure the type of alert (and other) logging you would like.
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outputs:
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# a line based alerts log similar to Snort's fast.log
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- fast:
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enabled: yes
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filename: fast.log
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# log output for use with Barnyard
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- unified-log:
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enabled: no
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filename: unified.log
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# Limit in MB.
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#limit: 32
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# alert output for use with Barnyard
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- unified-alert:
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enabled: no
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filename: unified.alert
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# Limit in MB.
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#limit: 32
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# alert output for use with Barnyard2
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- unified2-alert:
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enabled: yes
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filename: unified2.alert
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# Limit in MB.
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#limit: 32
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# a line based log of HTTP requests (no alerts)
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- http-log:
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enabled: yes
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filename: http.log
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# a full alerts log containing much information for signature writers
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# or for investigating suspected false positives.
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- alert-debug:
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enabled: no
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filename: alert-debug.log
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# alert output to prelude (http://www.prelude-technologies.com/) only
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# available if Suricata has been compiled with --enable-prelude
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- alert-prelude:
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enabled: no
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profile: suricata
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defrag:
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max-frags: 65535
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prealloc: yes
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timeout: 60
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# You can specify a threshold config file by setting "threshold-file"
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# to the path of the threshold config file:
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# threshold-file: /etc/suricata/threshold.config
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# The detection engine builds internal groups of signatures. The engine
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# allow us to specify the profile to use for them, to manage memory on an
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# efficient way keeping a good performance. For the profile keyword you
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# can use the words "low", "medium", "high" or "custom". If you use custom
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# make sure to define the values at "- custom-values" as your convenience.
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# Usually you would prefer medium/high/low
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detect-engine:
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- profile: medium
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- custom-values:
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toclient_src_groups: 2
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toclient_dst_groups: 2
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toclient_sp_groups: 2
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toclient_dp_groups: 3
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toserver_src_groups: 2
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toserver_dst_groups: 4
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toserver_sp_groups: 2
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toserver_dp_groups: 25
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# Suricata is multi-threaded. Here the threading can be influenced.
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threading:
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# On some cpu's/architectures it is beneficial to tie individual threads
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# to specific CPU's/CPU cores. In this case all threads are tied to CPU0,
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# and each extra CPU/core has one "detect" thread.
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#
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# On Intel Core2 and Nehalem CPU's enabling this will degrade performance.
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#
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set_cpu_affinity: no
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#
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# By default Suricata creates one "detect" thread per available CPU/CPU core.
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# This setting allows controlling this behaviour. A ratio setting of 2 will
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# create 2 detect threads for each CPU/CPU core. So for a dual core CPU this
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# will result in 4 detect threads. If values below 1 are used, less threads
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# are created. So on a dual core CPU a setting of 0.5 results in 1 detect
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# thread being created. Regardless of the setting at a minimum 1 detect
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# thread will always be created.
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#
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detect_thread_ratio: 1.5
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# Select the cuda device to use. The device_id identifies the device to be used
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# if one has multiple devices on the system. To find out device_id associated
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# with the card(s) on the system run "suricata --list-cuda-cards".
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cuda:
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device_id: 0
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# Select the multi pattern algorithm you want to run for scan/search the
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# in the engine. The supported algorithms are b2g, b3g and wumanber.
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#
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# There is also a CUDA pattern matcher (only available if Suricata was
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# compiled with --enable-cuda: b2g_cuda. Make sure to update your
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# max-pending-packets setting above as well if you use b2g_cuda.
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mpm-algo: b2g
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# The memory settings for hash size of these algorithms can vary from lowest
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# (2048) - low (4096) - medium (8192) - high (16384) - highest (32768) - max
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# (65536). The bloomfilter sizes of these algorithms can vary from low (512) -
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# medium (1024) - high (2048).
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#
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# For B2g/B3g algorithms, there is a support for two different scan/search
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# algorithms. For B2g the scan algorithms are B2gScan & B2gScanBNDMq, and
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# search algorithms are B2gSearch & B2gSearchBNDMq. For B3g scan algorithms
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# are B3gScan & B3gScanBNDMq, and search algorithms are B3gSearch &
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# B3gSearchBNDMq.
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#
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# For B2g the different scan/search algorithms and, hash and bloom
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# filter size settings. For B3g the different scan/search algorithms and, hash
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# and bloom filter size settings. For wumanber the hash and bloom filter size
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# settings.
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pattern-matcher:
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- b2g:
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scan_algo: B2gScanBNDMq
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search_algo: B2gSearchBNDMq
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hash_size: low
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bf_size: medium
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- b3g:
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scan_algo: B3gScanBNDMq
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search_algo: B3gSearchBNDMq
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hash_size: low
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bf_size: medium
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- wumanber:
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hash_size: low
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bf_size: medium
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# Flow settings:
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# By default, the reserved memory (memcap) for flows is 32MB. This is the limit
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# for flow allocation inside the engine. You can change this value to allow
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# more memory usage for flows.
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# The hash_size determine the size of the hash used to identify flows inside
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# the engine, and by default the value is 65536.
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# At the startup, the engine can preallocate a number of flows, to get a better
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# performance. The number of flows preallocated is 10000 by default.
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# emergency_recovery is the percentage of flows that the engine need to
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# prune before unsetting the emergency state. The emergency state is activated
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# when the memcap limit is reached, allowing to create new flows, but
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# prunning them with the emergency timeouts (they are defined below).
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# If the memcap is reached, the engine will try to prune prune_flows
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# with the default timeouts. If it doens't find a flow to prune, it will set
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# the emergency bit and it will try again with more agressive timeouts.
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# If that doesn't work, then it will try to kill the last time seen flows
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# not in use.
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flow:
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memcap: 33554432
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hash_size: 65536
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prealloc: 10000
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emergency_recovery: 30
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prune_flows: 5
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# Specific timeouts for flows. Here you can specify the timeouts that the
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# active flows will wait to transit from the current state to another, on each
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# protocol. The value of "new" determine the seconds to wait after a hanshake or
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# stream startup before the engine free the data of that flow it doesn't
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# change the state to established (usually if we don't receive more packets
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# of that flow). The value of "established" is the amount of
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# seconds that the engine will wait to free the flow if it spend that amount
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# without receiving new packets or closing the connection. "closed" is the
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# amount of time to wait after a flow is closed (usually zero).
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#
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# There's an emergency mode that will become active under attack circumstances,
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# making the engine to check flow status faster. This configuration variables
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# use the prefix "emergency_" and work similar as the normal ones.
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# Some timeouts doesn't apply to all the protocols, like "closed", for udp and
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# icmp.
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flow-timeouts:
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default:
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new: 30
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established: 300
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closed: 0
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emergency_new: 10
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emergency_established: 100
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emergency_closed: 0
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tcp:
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new: 60
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established: 3600
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closed: 120
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emergency_new: 10
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emergency_established: 300
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emergency_closed: 20
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udp:
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new: 30
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established: 300
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emergency_new: 10
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emergency_established: 100
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icmp:
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new: 30
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established: 300
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emergency_new: 10
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emergency_established: 100
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# Stream engine settings. Here the TCP stream tracking and reaasembly
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# engine is configured.
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#
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# stream:
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# memcap: 33554432 # 32mb tcp session memcap
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# checksum_validation: yes # To validate the checksum of received
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# packet. If csum validation is specified as
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# "yes", then packet with invalid csum will not
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# be processed by the engine stream/app layer.
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# max_sessions: 262144 # 256k concurrent sessions
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# prealloc_sessions: 32768 # 32k sessions prealloc'd
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# midstream: false # don't allow midstream session pickups
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# async_oneside: false # don't enable async stream handling
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# reassembly:
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# memcap: 67108864 # 64mb tcp reassembly memcap
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# depth: 1048576 # 1 MB reassembly depth
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stream:
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memcap: 33554432
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checksum_validation: yes
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reassembly:
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memcap: 67108864
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depth: 1048576
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# Logging configuration. This is not about logging IDS alerts, but
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# IDS output about what its doing, errors, etc.
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logging:
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# The default log level, can be overridden in an output section.
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# Note that debug level logging will only be emitted if Suricata was
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# compiled with the --enable-debug configure option.
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#
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# This value is overriden by the SC_LOG_LEVEL env var.
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default-log-level: info
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# The default output format. Optional parameter, should default to
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# something reasonable if not provided. Can be overriden in an
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# output section. You can leave this out to get the default.
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#
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# This value is overriden by the SC_LOG_FORMAT env var.
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#default-log-format: "[%i] %t - (%f:%l) <%d> (%n) -- "
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# A regex to filter output. Can be overridden in an output section.
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# Defaults to empty (no filter).
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#
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# This value is overriden by the SC_LOG_OP_FILTER env var.
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default-output-filter:
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# Define your logging outputs. If none are defined, or they are all
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# disabled you will get the default - console output.
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outputs:
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- console:
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enabled: yes
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- file:
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enabled: no
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filename: /var/log/suricata.log
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- syslog:
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enabled: no
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facility: local5
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format: "[%i] <%d> -- "
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# PF_RING configuration. for use with native PF_RING support
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# for more info see http://www.ntop.org/PF_RING.html
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pfring:
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# Default interface we will listen on.
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interface: eth0
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# Default clusterid. PF_RING will load balance packets based on flow.
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# All threads/processes that will participate need to have the same
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# clusterid.
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cluster-id: 99
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# Default PF_RING cluster type. PF_RING can load balance per flow or per hash.
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# This is only supported in versions of PF_RING > 4.1.1.
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cluster-type: cluster_round_robin
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# For FreeBSD ipfw(8) divert(4) support.
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# Please make sure you have ipfw_load="YES" and ipdivert_load="YES"
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# in /etc/loader.conf or kldload'ing the appropriate kernel modules.
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# Additionally, you need to have an ipfw rule for the engine to see
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# the packets from ipfw. For Example:
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#
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# ipfw add 100 divert 8000 ip from any to any
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#
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# The 8000 above should be the same number you passed on the command
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# line, i.e. -d 8000
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#
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ipfw:
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# Reinject packets at the specified ipfw rule number. This config
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# option is the ipfw rule number AT WHICH rule processing continues
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# in the ipfw processing system after the engine has finished
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# inspecting the packet for acceptance. If no rule number is specified,
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# accepted packets are reinjected at the divert rule which they entered
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# and IPFW rule processing continues. No check is done to verify
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# this will rule makes sense so care must be taken to avoid loops in ipfw.
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#
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## The following example tells the engine to reinject packets
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# back into the ipfw firewall AT rule number 5500:
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#
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# ipfw-reinjection-rule-number: 5500
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# Set the default rule path here to search for the files.
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# if not set, it will look at the current working dir
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default-rule-path: /etc/suricata/rules/
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rule-files:
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- snort.rules
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# - attack-responses.rules
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# - backdoor.rules
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# - bad-traffic.rules
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# - chat.rules
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# - ddos.rules
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# - deleted.rules
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# - dns.rules
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# - dos.rules
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# - experimental.rules
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# - exploit.rules
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# - finger.rules
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# - ftp.rules
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# - icmp-info.rules
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# - icmp.rules
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# - imap.rules
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# - info.rules
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# - local.rules
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# - misc.rules
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# - multimedia.rules
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# - mysql.rules
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# - netbios.rules
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# - nntp.rules
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# - oracle.rules
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# - other-ids.rules
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# - p2p.rules
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# - policy.rules
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# - pop2.rules
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# - pop3.rules
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# - porn.rules
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# - rpc.rules
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# - rservices.rules
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# - scada.rules
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# - scan.rules
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# - shellcode.rules
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# - smtp.rules
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# - snmp.rules
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# - specific-threats.rules
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# - spyware-put.rules
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# - sql.rules
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# - telnet.rules
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# - tftp.rules
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# - virus.rules
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# - voip.rules
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# - web-activex.rules
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# - web-attacks.rules
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# - web-cgi.rules
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# - web-client.rules
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# - web-coldfusion.rules
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# - web-frontpage.rules
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# - web-iis.rules
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# - web-misc.rules
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# - web-php.rules
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# - x11.rules
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# - emerging-attack_response.rules
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# - emerging-dos.rules
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# - emerging-exploit.rules
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# - emerging-game.rules
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# - emerging-inappropriate.rules
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# - emerging-malware.rules
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# - emerging-p2p.rules
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# - emerging-policy.rules
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# - emerging-scan.rules
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# - emerging-virus.rules
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# - emerging-voip.rules
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# - emerging-web.rules
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# - emerging-web_client.rules
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# - emerging-web_server.rules
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# - emerging-web_specific_apps.rules
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# - emerging-user_agents.rules
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# - emerging-current_events.rules
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classification-file: /etc/suricata/classification.config
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# Holds variables that would be used by the engine.
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vars:
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# Holds the address group vars that would be passed in a Signature.
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# These would be retrieved during the Signature address parsing stage.
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address-groups:
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HOME_NET: "[192.168.0.0/16,10.0.0.0/8,172.16.0.0/12]"
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EXTERNAL_NET: any
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HTTP_SERVERS: "$HOME_NET"
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SMTP_SERVERS: "$HOME_NET"
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SQL_SERVERS: "$HOME_NET"
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DNS_SERVERS: "$HOME_NET"
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TELNET_SERVERS: "$HOME_NET"
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AIM_SERVERS: any
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# Holds the port group vars that would be passed in a Signature.
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# These would be retrieved during the Signature port parsing stage.
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port-groups:
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HTTP_PORTS: "80"
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SHELLCODE_PORTS: "!80"
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ORACLE_PORTS: 1521
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SSH_PORTS: 22
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# Host specific policies for defragmentation and TCP stream
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# reassembly. The host OS lookup is done using a radix tree, just
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# like a routing table so the most specific entry matches.
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host-os-policy:
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# Make the default policy windows.
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windows: [0.0.0.0/0]
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bsd: []
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bsd_right: []
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old_linux: []
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linux: [10.0.0.0/8, 192.168.1.100, "8762:2352:6241:7245:E000:0000:0000:0000"]
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old_solaris: []
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solaris: ["::1"]
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hpux10: []
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hpux11: []
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irix: []
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macos: []
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vista: []
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windows2k3: []
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# Limit for the maximum number of asn1 frames to decode (default 256)
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asn1_max_frames: 256
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###########################################################################
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# Configure libhtp.
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#
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#
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# default-config: Used when no server-config matches
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# personality: List of personalities used by default
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#
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# server-config: List of server configurations to use if address matches
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# address: List of ip addresses or networks for this block
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# personalitiy: List of personalities used by this block
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#
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# Currently Available Personalities:
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# Minimal
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# Generic
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# IDS (default)
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# IIS_4_0
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# IIS_5_0
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# IIS_5_1
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# IIS_6_0
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# IIS_7_0
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# IIS_7_5
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# Apache
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# Apache_2_2
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###########################################################################
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libhtp:
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default-config:
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personality: IDS
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server-config:
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- apache:
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address: [192.168.1.0/24, 127.0.0.0/8, "::1"]
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personality: Apache_2_2
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- iis7:
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address:
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- 192.168.0.0/24
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- 192.168.10.0/24
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personality: IIS_7_0
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# rule profiling settings. Only effective if Suricata has been built with the
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# the --enable-profiling configure flag.
|
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#
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profiling:
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|
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rules:
|
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# Profiling can be disabled here, but it will still have a
|
|
# performance impact if compiled in.
|
|
enabled: yes
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|
|
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# Sort options: ticks, avgticks, checks, matches
|
|
sort: avgticks
|
|
|
|
# Limit the number of items printed at exit.
|
|
limit: 100
|
|
|