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%YAML 1.1
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---
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vars:
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address-groups:
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HOME_NET: "any"
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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: "$HOME_NET"
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AIM_SERVERS: "$EXTERNAL_NET"
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DC_SERVERS: "$HOME_NET"
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DNP3_SERVER: "$HOME_NET"
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DNP3_CLIENT: "$HOME_NET"
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MODBUS_CLIENT: "$HOME_NET"
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MODBUS_SERVER: "$HOME_NET"
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ENIP_CLIENT: "$HOME_NET"
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ENIP_SERVER: "$HOME_NET"
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port-groups:
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HTTP_PORTS: "80"
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SHELLCODE_PORTS: "!80"
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ORACLE_PORTS: 1521
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SSH_PORTS: 22
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DNP3_PORTS: 20000
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MODBUS_PORTS: 502
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FILE_DATA_PORTS: "[$HTTP_PORTS,110,143]"
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FTP_PORTS: 21
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default-log-dir: /var/log/suricata/
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# global stats configuration
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stats:
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enabled: yes
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interval: 8
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#decoder-events: true
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decoder-events-prefix: "decoder.event"
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#stream-events: false
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outputs:
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- stats:
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enabled: yes
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filename: stats.log
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append: yes # append to file (yes) or overwrite it (no)
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totals: yes # stats for all threads merged together
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threads: no # per thread stats
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logging:
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default-log-level: notice
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default-output-filter:
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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: yes
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level: info
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filename: /var/log/suricata/suricata.log
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# Linux high speed capture support
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af-packet:
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- interface: enp94s0f0
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threads: 20
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defrag: no
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cluster-type: cluster_flow
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xdp-mode: driver
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xdp-filter-file: /etc/suricata/ebpf/xdp_filter.bpf
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bypass: yes
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cluster-id: 98
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copy-mode: ips
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use-mmap: yes
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ring-size: 500000
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buffer-size: 5368709120
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rollover: no
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use-emergency-flush: yes
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copy-iface: enp94s0f1
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- interface: enp94s0f1
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threads: 20
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cluster-id: 97
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defrag: no
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cluster-type: cluster_flow
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xdp-mode: driver
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xdp-filter-file: /etc/suricata/ebpf/xdp_filter.bpf
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bypass: yes
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copy-mode: ips
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use-mmap: yes
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ring-size: 500000
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buffer-size: 5368709120
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rollover: no
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use-emergency-flush: yes
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copy-iface: enp94s0f0
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## Step 5: App Layer Protocol Configuration
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app-layer:
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protocols:
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krb5:
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enabled: yes
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ikev2:
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enabled: yes
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tls:
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enabled: yes
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detection-ports:
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dp: 443
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ja3-fingerprints: no
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encryption-handling: default
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dcerpc:
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enabled: yes
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ftp:
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enabled: yes
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# memcap: 64mb
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ssh:
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enabled: yes
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smtp:
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enabled: yes
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mime:
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decode-mime: yes
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decode-base64: yes
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decode-quoted-printable: yes
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header-value-depth: 2000
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extract-urls: yes
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body-md5: no
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# Configure inspected-tracker for file_data keyword
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inspected-tracker:
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content-limit: 100000
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content-inspect-min-size: 32768
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content-inspect-window: 4096
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imap:
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enabled: detection-only
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msn:
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enabled: detection-only
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smb:
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enabled: yes
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detection-ports:
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dp: 139, 445
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#stream-depth: 0
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nfs:
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enabled: yes
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tftp:
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enabled: yes
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dns:
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#global-memcap: 16mb
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#state-memcap: 512kb
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#request-flood: 500
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tcp:
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enabled: yes
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detection-ports:
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dp: 53
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udp:
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enabled: yes
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detection-ports:
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dp: 53
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http:
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enabled: yes
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# memcap: 64mb
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libhtp:
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default-config:
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personality: IDS
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request-body-limit: 200kb
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response-body-limit: 200kb
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request-body-minimal-inspect-size: 32kb
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request-body-inspect-window: 4kb
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response-body-minimal-inspect-size: 40kb
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response-body-inspect-window: 16kb
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response-body-decompress-layer-limit: 2
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http-body-inline: auto
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swf-decompression:
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enabled: yes
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type: both
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compress-depth: 0
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decompress-depth: 0
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double-decode-path: no
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double-decode-query: no
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server-config:
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modbus:
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enabled: no
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detection-ports:
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dp: 502
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stream-depth: 0
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# DNP3
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dnp3:
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enabled: no
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detection-ports:
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dp: 20000
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# Note: parser depends on Rust support
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ntp:
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enabled: yes
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dhcp:
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enabled: yes
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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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## Advanced settings below
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coredump:
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max-dump: unlimited
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host-mode: auto
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max-pending-packets: 1024
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runmode: workers
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#autofp-scheduler: active-packets
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#default-packet-size: 1514
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unix-command:
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enabled: auto
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legacy:
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uricontent: enabled
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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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engine-analysis:
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rules-fast-pattern: yes
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rules: yes
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#recursion and match limits for PCRE where supported
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pcre:
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match-limit: 3500
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match-limit-recursion: 1500
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host-os-policy:
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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: []
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old-solaris: []
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solaris: []
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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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# Defrag settings:
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defrag:
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memcap: 1gb
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hash-size: 65536
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trackers: 65535 # number of defragmented flows to follow
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max-frags: 1000000 # number of fragments to keep (higher than trackers)
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prealloc: yes
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timeout: 30
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flow:
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memcap: 1gb
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hash-size: 65536
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prealloc: 1000000
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emergency-recovery: 30
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prune-flows: 5
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managers: 2 # default to one flow manager
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recyclers: 2 # default to one flow recycler thread
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vlan:
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use-for-tracking: true
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flow-timeouts:
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default:
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new: 10 #10
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established: 100 #100
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closed: 0
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bypassed: 50 #50
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emergency-new: 5
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emergency-established: 50 #50
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emergency-closed: 0
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emergency-bypassed: 10
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tcp:
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new: 10 #10
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established: 100 #100
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closed: 5 #5
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bypassed: 50 #50
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emergency-new: 2
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emergency-established: 50 #50
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emergency-closed: 5 #5
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emergency-bypassed: 10
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udp:
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new: 10 #10
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established: 100 #100
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bypassed: 50 #50
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emergency-new: 2
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emergency-established: 50 #50
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emergency-bypassed: 10
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icmp:
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new: 10 #10
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established: 100 #100
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bypassed: 50 #50
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emergency-new: 2
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emergency-established: 50 #50
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emergency-bypassed: 10
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stream:
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#memcap: 12gb
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#checksum-validation: no # reject wrong csums
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#inline: yes # auto will use inline mode in IPS mode, yes or no set it statically
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#prealloc-sessions: 1000000
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#bypass: yes
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#midstream: false # do not allow midstream session pickups
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#async-oneside: false # do not enable async stream handling
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#drop-invalid: no # drop invalid packets
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#reassembly:
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#memcap: 18gb
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#depth: 1mb # reassemble 1mb into a stream
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#toserver-chunk-size: 2560
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#toclient-chunk-size: 2560
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#randomize-chunk-size: yes
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#randomize-chunk-range: 10
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memcap: 2gb
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checksum-validation: yes # reject wrong csums
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inline: auto # auto will use inline mode in IPS mode, yes or no set it statically
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reassembly:
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memcap: 4gb
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depth: 1mb # reassemble 1mb into a stream
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toserver-chunk-size: 2560
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toclient-chunk-size: 2560
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randomize-chunk-size: yes
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host:
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hash-size: 4096
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prealloc: 1000
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memcap: 32mb
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# Decoder settings
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decoder:
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teredo:
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enabled: true
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detect:
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profile: custom
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custom-values:
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toclient-groups: 300
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toserver-groups: 300
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toclient-sp-groups: 300
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toclient-dp-groups: 300
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toserver-src-groups: 300
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toserver-dst-groups: 5400
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toserver-sp-groups: 300
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toserver-dp-groups: 350
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sgh-mpm-context: full
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inspection-recursion-limit: 3000
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prefilter:
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default: mpm
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grouping:
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#tcp-whitelist: 53, 80, 139, 443, 445, 1433, 3306, 3389, 6666, 6667, 8080
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#udp-whitelist: 53, 135, 5060
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profiling:
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#inspect-logging-threshold: 200
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grouping:
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dump-to-disk: false
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include-rules: false # very verbose
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include-mpm-stats: false
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mpm-algo: hs
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spm-algo: hs
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threading:
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set-cpu-affinity: yes
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#
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cpu-affinity:
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- management-cpu-set:
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cpu: [ 0,1,2,3,4,5 ] # include only these CPUs in affinity settings
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mode: "balanced"
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prio:
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default: "high"
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- worker-cpu-set:
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cpu: [ "20-39","60-79" ]
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mode: "exclusive"
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prio:
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default: "high"
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detect-thread-ratio: 1.0
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luajit:
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states: 128
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default-rule-path: /etc/suricata/rules
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rule-files:
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- custom.rules
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classification-file: /etc/suricata/classification.config
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reference-config-file: /etc/suricata/reference.config
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threshold-file: /etc/suricata/threshold.config
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