[Oisf-users] Segfault in 1.4rc1 in Live rule swap
Victor Julien
lists at inliniac.net
Wed Dec 12 19:46:10 UTC 2012
Ah, can you install the suricata-dbg package instead of the plain
"suricata" one?
That should give more info :)
On 12/12/2012 07:18 PM, Fernando Sclavo wrote:
> Yes! I finally catched a core. I never runned a backtrace on a core
> dump, so please tell me about any particular detail. A "standard" gdb
> and backtrace output from the core dump:
>
> idsuser at suricata:/$ sudo gdb /usr/bin/suricata core
> GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2.1) 7.4-2012.04
> Copyright (C) 2012 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-linux-gnu".
> For bug reporting instructions, please see:
> <http://bugs.launchpad.net/gdb-linaro/>...
> Reading symbols from /usr/bin/suricata...(no debugging symbols
> found)...done.
>
> warning: core file may not match specified executable file.
> [New LWP 5708]
> [New LWP 5710]
> [New LWP 5712]
> [New LWP 5714]
> [New LWP 5709]
> [New LWP 5713]
> [New LWP 5682]
> [New LWP 5715]
> [New LWP 5689]
> [New LWP 5705]
> [New LWP 5688]
> [New LWP 5692]
> [New LWP 5683]
> [New LWP 5686]
> [New LWP 5694]
> [New LWP 5691]
> [New LWP 5701]
> [New LWP 5693]
> [New LWP 5711]
> [New LWP 5697]
> [New LWP 5707]
> [New LWP 5698]
> [New LWP 5696]
> [New LWP 5706]
> [New LWP 5700]
> [New LWP 5702]
> [New LWP 5703]
> [New LWP 5684]
> [New LWP 5704]
> [New LWP 5685]
> [New LWP 5690]
> [New LWP 5699]
> [New LWP 5687]
> [New LWP 5695]
>
> warning: Can't read pathname for load map: Input/output error.
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
> Core was generated by `suricata -D -c /etc/suricata/suricata.yaml
> --af-packet'.
> Program terminated with signal 11, Segmentation fault.
> #0 0x000000000048c021 in ?? ()
> (gdb) backtrace
> #0 0x000000000048c021 in ?? ()
> #1 0x0000000000458ceb in ?? ()
> #2 0x0000000000458e97 in ?? ()
> #3 0x0000000000510aa8 in ?? ()
> #4 0x00000000004f2093 in ?? ()
> #5 0x00000000004f4c0d in ?? ()
> #6 0x0000000000513a85 in ?? ()
> #7 0x00007fef526f7e9a in start_thread () from
> /lib/x86_64-linux-gnu/libpthread.so.0
> #8 0x00007fef51fbbcbd in clone () from /lib/x86_64-linux-gnu/libc.so.6
> #9 0x0000000000000000 in ?? ()
>
>
>
>
>
> 2012/12/12 Victor Julien <lists at inliniac.net <mailto:lists at inliniac.net>>
>
> On 12/12/2012 07:11 PM, Fernando Sclavo wrote:
> > Victor, I haven't a core dump, I don't know why it's not generated,
> > because is enabled in sysctl.conf. Instead, an apport crash was
> > generated but without coredump inside. i will inverstigate more
> this issue.
> >
> > Suricata is installed from ppa (beta).
> >
> > Path:
> > idsuser at suricata:/var/log/suricata$ which suricata
> > /usr/bin/suricata
> >
> > Command:
> > sudo suricata -D -c /etc/suricata/suricata.yaml --af-packet
>
> Maybe you can run without the -D for a while, then it stays in the
> foreground. I think in daemon mode it changes work dir.
>
> Which reminds me, could there be a core file in "/", so "/core"?
>
> Wrt apport, what does:
> cat /proc/sys/kernel/core_pattern
> give you?
>
> Cheers,
> Victor
>
>
> >
> > suricata.yaml:
> >
> > idsuser at suricata:/var/log/suricata$ cat /etc/suricata/suricata.yaml
> > %YAML 1.1
> > ---
> >
> > # Suricata configuration file. In addition to the comments
> describing all
> > # options in this file, full documentation can be found at:
> > #
> >
> https://redmine.openinfosecfoundation.org/projects/suricata/wiki/Suricatayaml
> >
> >
> > # Number of packets allowed to be processed simultaneously.
> Default is a
> > # conservative 1024. A higher number will make sure CPU's/CPU
> cores will be
> > # more easily kept busy, but may negatively impact caching.
> > #
> > # If you are using the CUDA pattern matcher (b2g_cuda below),
> different
> > rules
> > # apply. In that case try something like 4000 or more. This is because
> > the CUDA
> > # pattern matcher scans many packets in parallel.
> > max-pending-packets: 65534
> >
> > # Runmode the engine should use. Please check --list-runmodes to
> get the
> > available
> > # runmodes for each packet acquisition method. Defaults to "autofp"
> > (auto flow pinned
> > # load balancing).
> > runmode: workers
> >
> > # Specifies the kind of flow load balancer used by the flow pinned
> > autofp mode.
> > #
> > # Supported schedulers are:
> > #
> > # round-robin - Flows assigned to threads in a round robin
> fashion.
> > # active-packets - Flows assigned to threads that have the lowest
> > number of
> > # unprocessed packets (default).
> > # hash - Flow alloted usihng the address hash. More
> of a random
> > # technique. Was the default in Suricata 1.2.1 and
> > older.
> > #
> > #autofp-scheduler: active-packets
> >
> > # Run suricata as user and group.
> > #run-as:
> > # user: suri
> > # group: suri
> >
> > # Default pid file.
> > # Will use this file if no --pidfile in command options.
> > pid-file: /var/run/suricata.pid
> >
> > # Daemon working directory
> > # Suricata will change directory to this one if provided
> > # Default: "/"
> > #daemon-directory: "/"
> >
> > # Preallocated size for 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
> >
> > # 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
> > # overridden with the -l command line parameter.
> > default-log-dir: /var/log/suricata
> >
> > # 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'
> >
> > # alert output for use with Barnyard2
> > - unified2-alert:
> > enabled: yes
> > filename: unified2.alert
> >
> > # File size limit. Can be specified in kb, mb, gb. Just a
> number
> > # is parsed as bytes.
> > #limit: 32mb
> >
> > # a line based log of HTTP requests (no alerts)
> > - http-log:
> > enabled: yes
> > filename: http.log
> > append: yes
> > extended: yes # enable this for extended logging information
> > #custom: yes # enabled 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.
> > #extended: yes # Log extended information like fingerprint
> > certs-log-dir: certs # directory to store the certificates files
> >
> > # a line based log to used with pcap file study.
> > # this module is dedicated to offline pcap parsing (empty output
> > # if used with another kind of input). It can interoperate with
> > # pcap parser like wireshark via the suriwire plugin.
> > - pcap-info:
> > enabled: no
> >
> > # Packet log... log packets in pcap format. 2 modes of
> operation: "normal"
> > # and "sguil".
> > #
> > # In normal mode a pcap file "filename" is created in the
> default-log-dir,
> > # or are as specified by "dir". In Sguil mode "dir" indicates
> the base
> > directory.
> > # In this base dir the pcaps are created in th directory structure
> > Sguil expects:
> > #
> > # $sguil-base-dir/YYYY-MM-DD/$filename.<timestamp>
> > #
> > # By default all packets are logged except:
> > # - TCP streams beyond stream.reassembly.depth
> > # - encrypted streams after the key exchange
> > #
> > - pcap-log:
> > enabled: no
> > filename: log.pcap
> >
> > # File size limit. Can be specified in kb, mb, gb. Just a
> number
> > # is parsed as bytes.
> > limit: 1000mb
> >
> > # If set to a value will enable ring buffer mode. Will keep
> > Maximum of "max-files" of size "limit"
> > max-files: 2000
> >
> > mode: normal # normal or sguil.
> > #sguil-base-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
> >
> > # a full alerts 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'
> >
> > # alert output to prelude (http://www.prelude-technologies.com/)
> only
> > # available if Suricata has been compiled with --enable-prelude
> > - alert-prelude:
> > enabled: no
> > profile: suricata
> > log-packet-content: no
> > log-packet-header: yes
> >
> > # Stats.log contains data from various counters of the suricata
> engine.
> > # The interval field (in seconds) tells after how long output
> will be
> > written
> > # on the log file.
> > - stats:
> > enabled: yes
> > filename: stats.log
> > interval: 10
> >
> > # a line based alerts log similar to fast.log into syslog
> > - syslog:
> > enabled: no
> > # reported identity to syslog. If ommited the program name
> (usually
> > # suricata) will be used.
> > #identity: "suricata"
> > facility: local5
> > #level: Info ## possible levels: Emergency, Alert, Critical,
> > ## Error, Warning, Notice, Info, Debug
> >
> > # a line based information for dropped packets in IPS mode
> > - drop:
> > enabled: no
> > filename: drop.log
> > append: yes
> > #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
> >
> > # output module to store extracted files to disk
> > #
> > # The files are stored to the log-dir in a format "file.<id>" where
> > <id> is
> > # an incrementing number starting at 1. For each file
> "file.<id>" a meta
> > # file "file.<id>.meta" is created.
> > #
> > # File extraction depends on a lot of things to be fully done:
> > # - stream reassembly depth. For optimal results, set this to 0
> > (unlimited)
> > # - http request / response body sizes. Again set to 0 for optimal
> > results.
> > # - rules that contain the "filestore" keyword.
> > - file-store:
> > enabled: no # set to yes to enable
> > log-dir: files # directory to store the files
> > force-magic: no # force logging magic on all stored files
> > force-md5: no # force logging of md5 checksums
> > #waldo: file.waldo # waldo file to store the file_id across runs
> >
> > # output module to log files tracked in a easily parsable json
> format
> > - file-log:
> > enabled: no
> > filename: files-json.log
> > append: yes
> > #filetype: regular # 'regular', 'unix_stream' or 'unix_dgram'
> >
> > force-magic: no # force logging magic on all logged files
> > force-md5: no # force logging of md5 checksums
> >
> > # Magic file. The extension .mgc is added to the value here.
> > #magic-file: /usr/share/file/magic
> > magic-file: /usr/share/file/magic
> >
> > # 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:
> > # 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 >= 3.6, you can set the fail-open option to yes to have the
> > kernel
> > # accept the packet if suricata is not able to keep pace.
> > nfq:
> > # mode: accept
> > # repeat-mark: 1
> > # repeat-mask: 1
> > # route-queue: 2
> > # fail-open: yes
> >
> > # af-packet support
> > # Set threads to > 1 to use PACKET_FANOUT support
> > af-packet:
> > - interface: eth4
> > # Number of receive threads (>1 will enable experimental flow
> pinned
> > # runmode)
> > threads: 1
> > # Default clusterid. AF_PACKET will load balance packets
> based on flow.
> > # All threads/processes that will participate need to have the
> same
> > # clusterid.
> > 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_round_robin: round robin load balancing
> > # * 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-type: cluster_flow
> > # In some fragmentation case, 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
> > # 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
> > independantly of the number
> > # of threads:
> > ring-size: 65534
> > # 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.
> > #use-emergency-flush: yes
> > # recv buffer size, increase value could improve performance
> > buffer-size: 32mb
> > # 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.
> > # 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: '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: port 80 or udp
> > # You can use the following variables to activate AF_PACKET tap od
> > 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
> > - interface: eth5
> > threads: 14
> > cluster-id: 98
> > cluster-type: cluster_flow
> > defrag: yes
> > use-mmap: yes
> > ring-size: 1048576
> > buffer-size: 2gb
> > # disable-promisc: no
> >
> > - interface: eth6
> > threads: 1
> > cluster-id: 97
> > cluster-type: cluster_flow
> > defrag: yes
> > use-mmap: yes
> > ring-size: 65534
> > buffer-size: 32mb
> >
> > - interface: eth7
> > threads: 14
> > cluster-id: 96
> > cluster-type: cluster_flow
> > defrag: yes
> > use-mmap: yes
> > ring-size: 1048576
> > buffer-size: 2gb
> >
> > # You can specify a threshold config file by setting "threshold-file"
> > # to the path of the threshold config file:
> > # threshold-file: /etc/suricata/threshold.config
> >
> > # 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.
> > # Usually you would prefer medium/high/low.
> > #
> > # "sgh mpm-context", indicates how the staging should allot mpm
> contexts for
> > # the signature groups. "single" indicates the use of a single
> context for
> > # all the signature group heads. "full" indicates a mpm-context
> for each
> > # group head. "auto" lets the engine decide the distribution of
> contexts
> > # based on the information the engine gathers on the patterns from
> each
> > # group head.
> > #
> > # The option inspection-recursion-limit is used to limit the
> recursive calls
> > # in the content inspection code. For certain payload-sig
> combinations, we
> > # might end up taking too much time in the content inspection code.
> > # If the argument specified is 0, the engine uses an internally
> defined
> > # default limit. On not specifying a value, we use no limits on the
> > recursion.
> > detect-engine:
> > - profile: high
> > - custom-values:
> > toclient-src-groups: 2
> > toclient-dst-groups: 2
> > toclient-sp-groups: 2
> > toclient-dp-groups: 3
> > toserver-src-groups: 2
> > toserver-dst-groups: 4
> > toserver-sp-groups: 2
> > toserver-dp-groups: 25
> > - sgh-mpm-context: auto
> > - inspection-recursion-limit: 3000
> > # When rule-reload is enabled, sending a USR2 signal to the Suricata
> > process
> > # will trigger a live rule reload. Experimental feature, use
> with care.
> > - rule-reload: true
> > # If set to yes, the loading of signatures will be made after
> the capture
> > # is started. This will limit the downtime in IPS mode.
> > #- delayed-detect: yes
> >
> > # Suricata is multi-threaded. Here the threading can be influenced.
> > threading:
> > # On some cpu's/architectures it is beneficial to tie individual
> threads
> > # to specific CPU's/CPU cores. In this case all threads are tied
> to CPU0,
> > # and each extra CPU/core has one "detect" thread.
> > #
> > # On Intel Core2 and Nehalem CPU's enabling this will degrade
> performance.
> > #
> > set-cpu-affinity: no
> > # Tune cpu affinity of suricata threads. Each family of threads
> can be
> > bound
> > # on specific CPUs.
> > cpu-affinity:
> > - management-cpu-set:
> > cpu: [ 0 ] # include only these cpus in affinity settings
> > - receive-cpu-set:
> > cpu: [ 0 ] # include only these cpus in affinity settings
> > - decode-cpu-set:
> > cpu: [ 0, 1 ]
> > mode: "balanced"
> > - stream-cpu-set:
> > cpu: [ "0-1" ]
> > - detect-cpu-set:
> > cpu: [ "all" ]
> > mode: "exclusive" # run detect threads in these cpus
> > # Use explicitely 3 threads and don't compute number by using
> > # detect-thread-ratio variable:
> > # threads: 3
> > prio:
> > low: [ 0 ]
> > medium: [ "1-2" ]
> > high: [ 3 ]
> > default: "medium"
> > - verdict-cpu-set:
> > cpu: [ 0 ]
> > prio:
> > default: "high"
> > - reject-cpu-set:
> > cpu: [ 0 ]
> > prio:
> > default: "low"
> > - output-cpu-set:
> > cpu: [ "all" ]
> > prio:
> > default: "medium"
> > #
> > # By default Suricata creates one "detect" thread per available
> > CPU/CPU core.
> > # This setting allows controlling this behaviour. A ratio
> setting of 2
> > will
> > # create 2 detect threads for each CPU/CPU core. So for a dual core
> > CPU this
> > # will result in 4 detect threads. If values below 1 are used, less
> > threads
> > # are created. So on a dual core CPU a setting of 0.5 results in
> 1 detect
> > # thread being created. Regardless of the setting at a minimum 1
> detect
> > # thread will always be created.
> > #
> > detect-thread-ratio: 1.5
> >
> > # Cuda configuration.
> > cuda:
> > # The "mpm" profile. On not specifying any of these parameters, the
> > engine's
> > # internal default values are used, which are same as the ones
> > specified here.
> > - mpm:
> > # Threshold limit for no of packets buffered to the GPU.
> Once we
> > hit this
> > # limit, we pass the buffer to the gpu.
> > packet-buffer-limit: 2400
> > # The maximum length for a packet that we would buffer to
> the gpu.
> > # Anything over this is MPM'ed on the CPU. All entries > 0
> are valid.
> > # Can be specified in kb, mb, gb. Just a number indicates
> it's in
> > bytes.
> > packet-size-limit: 1500
> > # No of packet buffers we initialize. All entries > 0 are
> valid.
> > packet-buffers: 10
> > # The timeout limit for batching of packets in secs. If we
> don't
> > fill the
> > # buffer within this timeout limit, we pass the currently filled
> > buffer to the gpu.
> > # All entries > 0 are valid.
> > batching-timeout: 1
> > # Specifies whether to use page-locked memory whereever
> possible.
> > Accepted values
> > # are "enabled" and "disabled".
> > page-locked: enabled
> > # The device to use for the mpm. Currently we don't support
> load
> > balancing
> > # on multiple gpus. In case you have multiple devices on your
> > system, you
> > # can specify the device to use, using this conf. By default we
> > hold 0, to
> > # specify the first device cuda sees. To find out device-id
> > associated with
> > # the card(s) on the system run "suricata --list-cuda-cards".
> > device-id: 0
> > # No of Cuda streams used for asynchronous processing. All
> values
> >> 0 are valid.
> > # For this option you need a device with Compute Capability
> > 1.0 and
> > # page-locked enabled to have any effect.
> > cuda-streams: 2
> >
> > # Select the multi pattern algorithm you want to run for
> scan/search the
> > # in the engine. The supported algorithms are b2g, b2gc, b2gm, b3g,
> > wumanber,
> > # ac and ac-gfbs.
> > #
> > # The mpm you choose also decides the distribution of mpm contexts for
> > # signature groups, specified by the conf -
> "detect-engine.sgh-mpm-context".
> > # Selecting "ac" as the mpm would require
> "detect-engine.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.
> > #
> > # There is also a CUDA pattern matcher (only available if Suricata was
> > # compiled with --enable-cuda: b2g_cuda. Make sure to update your
> > # max-pending-packets setting above as well if you use b2g_cuda.
> >
> > mpm-algo: ac
> >
> > # The memory settings for hash size of these algorithms can vary
> from lowest
> > # (2048) - low (4096) - medium (8192) - high (16384) - higher
> (32768) - max
> > # (65536). The bloomfilter sizes of these algorithms can vary from low
> > (512) -
> > # medium (1024) - high (2048).
> > #
> > # For B2g/B3g algorithms, there is a support for two different
> scan/search
> > # algorithms. For B2g the scan algorithms are B2gScan &
> B2gScanBNDMq, and
> > # search algorithms are B2gSearch & B2gSearchBNDMq. For B3g scan
> algorithms
> > # are B3gScan & B3gScanBNDMq, and search algorithms are B3gSearch &
> > # B3gSearchBNDMq.
> > #
> > # For B2g the different scan/search algorithms and, hash and bloom
> > # filter size settings. For B3g the different scan/search algorithms
> > and, hash
> > # and bloom filter size settings. For wumanber the hash and bloom
> filter
> > size
> > # settings.
> >
> > pattern-matcher:
> > - b2gc:
> > search-algo: B2gSearchBNDMq
> > hash-size: high # FER2 low
> > bf-size: medium
> > - b2gm:
> > search-algo: B2gSearchBNDMq
> > hash-size: high # FER2 low
> > bf-size: medium
> > - b2g:
> > search-algo: B2gSearchBNDMq
> > hash-size: high # FER2 low
> > bf-size: medium
> > - b3g:
> > search-algo: B3gSearchBNDMq
> > hash-size: high # FER2 low
> > bf-size: medium
> > - wumanber:
> > hash-size: high # FER2 low
> > bf-size: medium
> >
> > # Defrag settings:
> >
> > defrag:
> > memcap: 1gb
> > hash-size: 131072
> > trackers: 131072 # number of defragmented flows to follow
> > max-frags: 131072 # number of fragments to keep (higher than
> trackers)
> > prealloc: yes
> > timeout: 10 # FER 60
> >
> > # Flow settings:
> > # By default, the reserved memory (memcap) for flows is 32MB. This is
> > the limit
> > # for flow allocation inside the engine. You can change this value
> to allow
> > # more memory usage for flows.
> > # The hash-size determine 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
> > # 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
> > # prunning 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 doens't find a flow to prune,
> it will set
> > # the emergency bit and it will try again with more agressive
> timeouts.
> > # If that doesn't work, then it will try to kill the last time
> seen flows
> > # not in use.
> > # The memcap can be specified in kb, mb, gb. Just a number
> indicates it's
> > # in bytes.
> >
> > flow:
> > memcap: 3gb
> > hash-size: 1048576 # FER 131072
> > prealloc: 1048576 # FER error? 16gb
> > emergency-recovery: 30
> >
> > # 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
> > hanshake or
> > # stream startup before the engine free 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
> > # without receiving new packets or closing the connection.
> "closed" is the
> > # amount of time to wait after a flow is closed (usually zero).
> > #
> > # There's an emergency mode that will become active under attack
> > circumstances,
> > # making the engine to check flow status faster. This configuration
> > variables
> > # use the prefix "emergency-" and work similar as the normal ones.
> > # Some timeouts doesn't apply to all the protocols, like "closed", for
> > udp and
> > # icmp.
> >
> > flow-timeouts:
> >
> > default:
> > new: 2 # 30
> > established: 3 # 300
> > closed: 0
> > emergency-new: 1 # 10
> > emergency-established: 2 # 100
> > emergency-closed: 0
> > tcp:
> > new: 2 # 60
> > established: 3 # 3600
> > closed: 0 # 120
> > emergency-new: 1 # 10
> > emergency-established: 2 # 300
> > emergency-closed: 0 # 20
> > udp:
> > new: 1 # 30
> > established: 2 # 300
> > emergency-new: 1 # 10
> > emergency-established: 2 # 100
> > icmp:
> > new: 1 # 30
> > established: 1 # 300
> > emergency-new: 1 # 10
> > emergency-established: 1 # 100
> >
> > # Stream engine settings. Here the TCP stream tracking and reaasembly
> > # engine is configured.
> > #
> > # stream:
> > # memcap: 32mb # Can be specified in kb, mb, gb.
> Just a
> > # # 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
> > # # be processed by the engine
> stream/app
> > layer.
> > # # Warning: locally generated
> trafic can be
> > # # generated without checksum due to
> > hardware offload
> > # # of checksum. You can control the
> > handling of checksum
> > # # on a per-interface basis via the 'checksum-checks'
> > # # option
> > # max-sessions: 262144 # 256k concurrent sessions
> > # prealloc-sessions: 32768 # 32k sessions prealloc'd
> > # midstream: false # don't allow midstream session
> pickups
> > # async-oneside: false # don't enable async stream handling
> > # inline: no # stream inline mode
> > #
> > # reassembly:
> > # memcap: 64mb # Can be specified in kb, mb, gb.
> Just
> > a number
> > # # indicates it's in bytes.
> > # depth: 1mb # Can be specified in kb, mb, gb.
> Just
> > a number
> > # # indicates it's in bytes.
> > # toserver-chunk-size: 2560 # inspect raw stream in chunks of
> at least
> > # # this size. Can be specified in
> kb, mb,
> > # # gb. Just a number indicates it's in
> > bytes.
> > # toclient-chunk-size: 2560 # inspect raw stream in chunks of
> at least
> > # # this size. Can be specified in
> kb, mb,
> > # # gb. Just a number indicates it's in
> > bytes.
> >
> > stream:
> > memcap: 16gb
> > checksum-validation: no # reject wrong csums
> > inline: no # auto will use inline mode in IPS mode,
> > yes or no set it statically
> > max-sessions: 4500000
> > prealloc-sessions: 2000000
> > reassembly:
> > memcap: 98gb
> > depth: 150kb # reassemble 1mb into a stream
> > toserver-chunk-size: 2560
> > toclient-chunk-size: 2560
> >
> > # Host table:
> > #
> > # Host table is used by tagging and per host thresholding subsystems.
> > #
> > host:
> > hash-size: 4096
> > prealloc: 10000
> > memcap: 512mb
> >
> > # Logging configuration. This is not about logging IDS alerts, but
> > # IDS output about what its doing, 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 overriden by the SC_LOG_LEVEL env var.
> > default-log-level: info
> >
> > # The default output format. Optional parameter, should default to
> > # something reasonable if not provided. Can be overriden in an
> > # output section. You can leave this out to get the default.
> > #
> > # This value is overriden by the SC_LOG_FORMAT env var.
> > #default-log-format: "[%i] %t - (%f:%l) <%d> (%n) -- "
> >
> > # A regex to filter output. Can be overridden in an output section.
> > # Defaults to empty (no filter).
> > #
> > # This value is overriden by the SC_LOG_OP_FILTER env var.
> > default-output-filter:
> >
> > # Define your logging outputs. If none are defined, or they are all
> > # disabled you will get the default - console output.
> > outputs:
> > - console:
> > enabled: yes
> > - file:
> > enabled: yes
> > filename: /var/log/suricata/suricata.log
> > - syslog:
> > enabled: no
> > facility: local5
> > format: "[%i] <%d> -- "
> >
> > # PF_RING configuration. for use with native PF_RING support
> > # for more info see http://www.ntop.org/PF_RING.html
> > pfring:
> > - interface: eth0
> > # Number of receive threads (>1 will enable experimental flow
> pinned
> > # runmode)
> > threads: 1
> >
> > # Default clusterid. PF_RING will load balance packets based
> on flow.
> > # All threads/processes that will participate need to have the
> same
> > # clusterid.
> > cluster-id: 99
> >
> > # Default PF_RING cluster type. PF_RING can load balance per
> flow or
> > per hash.
> > # This is only supported in versions of PF_RING > 4.1.1.
> > cluster-type: cluster_flow
> > # bpf filter for this interface
> > #bpf-filter: tcp
> > # 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.
> > # Possible values are:
> > # - rxonly: only compute checksum for packets received by
> network card.
> > # - yes: checksum validation is forced
> > # - no: checksum validation is disabled
> > # - auto: suricata uses a statistical approach to detect when
> > # checksum off-loading is used. (default)
> > # Warning: 'checksum-validation' must be set to yes to have any
> > validation
> > #checksum-checks: auto
> > # Second interface
> > #- interface: eth1
> > # threads: 3
> > # cluster-id: 93
> > # cluster-type: cluster_flow
> >
> > pcap:
> > - interface: eth4
> > buffer-size: 1gb
> > checksum-checks: no
> > threads: 8
> > - interface: eth5
> > buffer-size: 1gb
> > checksum-checks: no
> > threads: 8
> > - interface: eth6
> > buffer-size: 1gb
> > checksum-checks: no
> > threads: 8
> > - interface: eth7
> > buffer-size: 1gb
> > checksum-checks: no
> > threads: 8
> >
> > #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.
> > # 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
> > #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
> >
> > # For FreeBSD ipfw(8) divert(4) support.
> > # Please make sure you have ipfw_load="YES" and ipdivert_load="YES"
> > # in /etc/loader.conf or kldload'ing the appropriate kernel modules.
> > # Additionally, you need to have an ipfw rule for the engine to see
> > # the packets from ipfw. For Example:
> > #
> > # ipfw add 100 divert 8000 ip from any to any
> > #
> > # The 8000 above should be the same number you passed on the command
> > # line, i.e. -d 8000
> > #
> > ipfw:
> >
> > # Reinject packets at the specified ipfw rule number. This config
> > # option is the ipfw rule number AT WHICH rule processing continues
> > # in the ipfw processing system after the engine has finished
> > # inspecting the packet for acceptance. If no rule number is
> specified,
> > # accepted packets are reinjected at the divert rule which they
> entered
> > # and IPFW rule processing continues. No check is done to verify
> > # this will rule makes sense so care must be taken to avoid
> loops in ipfw.
> > #
> > ## The following example tells the engine to reinject packets
> > # back into the ipfw firewall AT rule number 5500:
> > #
> > # ipfw-reinjection-rule-number: 5500
> >
> > # Set the default rule path here to search for the files.
> > # if not set, it will look at the current working dir
> > default-rule-path: /etc/suricata/rules
> > rule-files:
> > - botcc.rules
> > - ciarmy.rules
> > - compromised.rules
> > - drop.rules
> > - dshield.rules
> > - emerging-activex.rules
> > - emerging-attack_response.rules
> > - emerging-chat.rules
> > - emerging-current_events.rules
> > - emerging-dns.rules
> > - emerging-dos.rules
> > - emerging-exploit.rules
> > - emerging-ftp.rules
> > - emerging-games.rules
> > - emerging-icmp_info.rules
> > - emerging-icmp.rules
> > - emerging-imap.rules
> > - emerging-inappropriate.rules
> > - emerging-malware.rules
> > - emerging-misc.rules
> > - emerging-mobile_malware.rules
> > - emerging-netbios.rules
> > - emerging-p2p.rules
> > - emerging-policy.rules
> > - emerging-pop3.rules
> > - emerging-rpc.rules
> > - emerging-scada.rules
> > - emerging-scan.rules
> > - emerging-shellcode.rules
> > - emerging-smtp.rules
> > - emerging-snmp.rules
> > - emerging-sql.rules
> > - emerging-telnet.rules
> > - emerging-tftp.rules
> > - emerging-trojan.rules
> > - emerging-user_agents.rules
> > - emerging-virus.rules
> > - emerging-voip.rules
> > - emerging-web_client.rules
> > - emerging-web_server.rules
> > - emerging-web_specific_apps.rules
> > - emerging-worm.rules
> > - rbn-malvertisers.rules
> > - rbn.rules
> > - tor.rules
> > - decoder-events.rules # available in suricata sources under
> rules dir
> > # - stream-events.rules # available in suricata sources under
> rules dir
> > - http-events.rules # available in suricata sources under
> rules dir
> > - smtp-events.rules # available in suricata sources under
> rules dir
> >
> > classification-file: /etc/suricata/classification.config
> > reference-config-file: /etc/suricata/reference.config
> >
> > # Holds variables that would be used by the engine.
> > vars:
> >
> > # Holds the address group vars that would be passed in a Signature.
> > # These would be retrieved during the Signature address parsing
> stage.
> > address-groups:
> >
> > HOME_NET: "[192.168.0.0/16,10.0.0.0/8,172.16.0.0/12
> <http://192.168.0.0/16,10.0.0.0/8,172.16.0.0/12>
> > <http://192.168.0.0/16,10.0.0.0/8,172.16.0.0/12>]"
> >
> > EXTERNAL_NET: "!$HOME_NET"
> >
> > HTTP_SERVERS: "$HOME_NET"
> >
> > SMTP_SERVERS: "$HOME_NET"
> >
> > SQL_SERVERS: "$HOME_NET"
> >
> > DNS_SERVERS: "$HOME_NET"
> >
> > TELNET_SERVERS: "$HOME_NET"
> >
> > AIM_SERVERS: "$EXTERNAL_NET"
> >
> > DNP3_SERVER: "$HOME_NET"
> >
> > DNP3_CLIENT: "$HOME_NET"
> >
> > MODBUS_CLIENT: "$HOME_NET"
> >
> > MODBUS_SERVER: "$HOME_NET"
> >
> > ENIP_CLIENT: "$HOME_NET"
> >
> > ENIP_SERVER: "$HOME_NET"
> >
> > # Holds the port group vars that would be passed in a Signature.
> > # These would be retrieved during the Signature port parsing stage.
> > port-groups:
> >
> > HTTP_PORTS: "80"
> >
> > SHELLCODE_PORTS: "!80"
> >
> > ORACLE_PORTS: 1521
> >
> > SSH_PORTS: 22
> >
> > DNP3_PORTS: 20000
> >
> > # Set the order of alerts bassed on actions
> > # The default order is pass, drop, reject, alert
> > action-order:
> > - pass
> > - drop
> > - reject
> > - alert
> >
> >
> > # Host specific policies for defragmentation and TCP stream
> > # reassembly. The host OS lookup is done using a radix tree, just
> > # like a routing table so the most specific entry matches.
> > host-os-policy:
> > # Make the default policy windows.
> > windows: [0.0.0.0/0 <http://0.0.0.0/0> <http://0.0.0.0/0>]
> > bsd: []
> > bsd-right: []
> > old-linux: []
> > linux: [10.0.0.0/8 <http://10.0.0.0/8> <http://10.0.0.0/8>,
> 192.168.1.100,
> > "8762:2352:6241:7245:E000:0000:0000:0000"]
> > old-solaris: []
> > solaris: ["::1"]
> > hpux10: []
> > hpux11: []
> > irix: []
> > macos: []
> > vista: []
> > windows2k3: []
> >
> >
> > # Limit for the maximum number of asn1 frames to decode (default 256)
> > asn1-max-frames: 256
> >
> > # When run with the option --engine-analysis, the engine will read
> each of
> > # the parameters below, and print reports for each of the enabled
> sections
> > # and exit. The reports are printed to a file in the default log dir
> > # given by the parameter "default-log-dir", with engine reporting
> > # subsection below printing reports in its own report file.
> > engine-analysis:
> > # enables printing reports for fast-pattern for every rule.
> > rules-fast-pattern: yes
> > # enables printing reports for each rule
> > rules: yes
> >
> > #recursion and match limits for PCRE where supported
> > pcre:
> > match-limit: 3500
> > match-limit-recursion: 1500
> >
> >
> ###########################################################################
> > # Configure libhtp.
> > #
> > #
> > # default-config: Used when no server-config matches
> > # personality: List of personalities used by default
> > # request-body-limit: Limit reassembly of request body for
> inspection
> > # by http_client_body & pcre /P option.
> > # response-body-limit: Limit reassembly of response body for
> inspection
> > # by file_data, http_server_body & pcre
> /Q option.
> > # double-decode-path: Double decode path section of the URI
> > # double-decode-query: Double decode query section of the URI
> > #
> > # 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
> > # request-body-limit: Limit reassembly of request body for
> inspection
> > # by http_client_body & pcre /P option.
> > # response-body-limit: Limit reassembly of response body for
> inspection
> > # by file_data, http_server_body & pcre
> /Q option.
> > # double-decode-path: Double decode path section of the URI
> > # double-decode-query: Double decode query section of the URI
> > #
> > # Currently Available Personalities:
> > # Minimal
> > # Generic
> > # IDS (default)
> > # IIS_4_0
> > # IIS_5_0
> > # IIS_5_1
> > # IIS_6_0
> > # IIS_7_0
> > # IIS_7_5
> > # Apache
> > # Apache_2_2
> >
> ###########################################################################
> > libhtp:
> >
> > default-config:
> > personality: IDS
> >
> > # Can be specified in kb, mb, gb. Just a number indicates
> > # it's in bytes.
> > request-body-limit: 16kb
> > response-body-limit: 16kb
> >
> > # inspection limits
> > request-body-minimal-inspect-size: 16kb
> > request-body-inspect-window: 16kb
> > response-body-minimal-inspect-size: 16kb
> > response-body-inspect-window: 16kb
> >
> > # decoding
> > double-decode-path: no
> > double-decode-query: no
> >
> > server-config:
> >
> > - apache:
> > address: [192.168.0.0/16 <http://192.168.0.0/16>
> <http://192.168.0.0/16>, 127.0.0.0/8 <http://127.0.0.0/8>
> > <http://127.0.0.0/8>, "::1"]
> > personality: Apache_2_2
> > # Can be specified in kb, mb, gb. Just a number indicates
> > # it's in bytes.
> > request-body-limit: 16kb
> > response-body-limit: 16kb
> > double-decode-path: no
> > double-decode-query: no
> >
> > - iis7:
> > address:
> > - 192.168.0.0/16 <http://192.168.0.0/16>
> <http://192.168.0.0/16>
> > # - 192.168.10.0/24 <http://192.168.10.0/24>
> <http://192.168.10.0/24>
> > personality: IIS_7_0
> > # Can be specified in kb, mb, gb. Just a number indicates
> > # it's in bytes.
> > request-body-limit: 16kb
> > response-body-limit: 16kb
> > double-decode-path: no
> > double-decode-query: no
> >
> > # Profiling settings. Only effective if Suricata has been built
> with the
> > # the --enable-profiling configure flag.
> > #
> > profiling:
> >
> > # rule profiling
> > rules:
> >
> > # Profiling can be disabled here, but it will still have a
> > # performance impact if compiled in.
> > enabled: yes
> > filename: rule_perf.log
> > append: yes
> >
> > # Sort options: ticks, avgticks, checks, matches, maxticks
> > sort: avgticks
> >
> > # Limit the number of items printed at exit.
> > limit: 100
> >
> > # packet profiling
> > packets:
> >
> > # Profiling can be disabled here, but it will still have a
> > # performance impact if compiled in.
> > enabled: yes
> > filename: packet_stats.log
> > append: yes
> >
> > # per packet csv output
> > csv:
> >
> > # Output can be disabled here, but it will still have a
> > # performance impact if compiled in.
> > enabled: no
> > filename: packet_stats.csv
> >
> > # profiling of locking. Only available when Suricata was built with
> > # --enable-profiling-locks.
> > locks:
> > enabled: no
> > filename: lock_stats.log
> > append: yes
> >
> > # Suricata core dump configuration. Limits the size of the core
> dump file to
> > # approximately max-dump. The actual core dump size will be a multiple
> > of the
> > # page size. Core dumps that would be larger than max-dump are
> truncated. On
> > # Linux, the actual core dump size may be a few pages larger than
> max-dump.
> > # Setting max-dump to 0 disables core dumping.
> > # Setting max-dump to 'unlimited' will give the full core dump file.
> > # On 32-bit Linux, a max-dump value >= ULONG_MAX may cause the
> core dump
> > size
> > # to be 'unlimited'.
> >
> > coredump:
> > max-dump: unlimited
> >
> >
> >
> >
> > 2012/12/12 Victor Julien <lists at inliniac.net
> <mailto:lists at inliniac.net> <mailto:lists at inliniac.net
> <mailto:lists at inliniac.net>>>
> >
> > On 12/12/2012 05:52 PM, Fernando Sclavo wrote:
> > > Suricata recently dumped whith segfault, trying to reload rules.
> >
> > Can you get us a backtrace?
> >
> > The process should dump core to the directory you're starting
> from.
> >
> > Also, can you share your config and commandline?
> >
> > --
> > ---------------------------------------------
> > Victor Julien
> > http://www.inliniac.net/
> > PGP: http://www.inliniac.net/victorjulien.asc
> > ---------------------------------------------
> >
> > _______________________________________________
> > Suricata IDS Users mailing list:
> > oisf-users at openinfosecfoundation.org
> <mailto:oisf-users at openinfosecfoundation.org>
> > <mailto:oisf-users at openinfosecfoundation.org
> <mailto:oisf-users at openinfosecfoundation.org>>
> > Site: http://suricata-ids.org | Support:
> > http://suricata-ids.org/support/
> > List:
> >
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> >
> >
>
>
> --
> ---------------------------------------------
> Victor Julien
> http://www.inliniac.net/
> PGP: http://www.inliniac.net/victorjulien.asc
> ---------------------------------------------
>
>
--
---------------------------------------------
Victor Julien
http://www.inliniac.net/
PGP: http://www.inliniac.net/victorjulien.asc
---------------------------------------------
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