8. Suricata Rules
- 8.1. Rules Format
- 8.2. Meta Keywords
- 8.3. IP Keywords
- 8.4. TCP keywords
- 8.5. UDP keywords
- 8.6. ICMP keywords
- 8.7. Payload Keywords
- 8.7.1. content
- 8.7.2. nocase
- 8.7.3. depth
- 8.7.4. startswith
- 8.7.5. endswith
- 8.7.6. offset
- 8.7.7. distance
- 8.7.8. within
- 8.7.9. rawbytes
- 8.7.10. isdataat
- 8.7.11. absent
- 8.7.12. bsize
- 8.7.13. dsize
- 8.7.14. byte_test
- 8.7.15. byte_math
- 8.7.16. byte_jump
- 8.7.17. byte_extract
- 8.7.18. entropy
- 8.7.19. rpc
- 8.7.20. replace
- 8.7.21. pcre (Perl Compatible Regular Expressions)
- 8.8. Integer Keywords
- 8.9. Transformations
- 8.9.1. dotprefix
- 8.9.2. domain
- 8.9.3. tld
- 8.9.4. strip_whitespace
- 8.9.5. compress_whitespace
- 8.9.6. to_lowercase
- 8.9.7. to_md5
- 8.9.8. to_uppercase
- 8.9.9. to_sha1
- 8.9.10. to_sha256
- 8.9.11. pcrexform
- 8.9.12. url_decode
- 8.9.13. xor
- 8.9.14. header_lowercase
- 8.9.15. strip_pseudo_headers
- 8.9.16. from_base64
- 8.10. Prefiltering Keywords
- 8.11. Flow Keywords
- 8.12. Bypass Keyword
- 8.13. HTTP Keywords
- 8.13.1. HTTP Primer
- 8.13.2. Normalization
- 8.13.3. file.name
- 8.13.4. http.accept
- 8.13.5. http.accept_enc
- 8.13.6. http.accept_lang
- 8.13.7. http.host
- 8.13.8. http.host.raw
- 8.13.9. http.method
- 8.13.10. http.referer
- 8.13.11. http.request_body
- 8.13.12. http.request_header
- 8.13.13. http.request_line
- 8.13.14. http.uri
- 8.13.15. http.uri.raw
- 8.13.16. http.user_agent
- 8.13.17. urilen
- 8.13.18. http.location
- 8.13.19. http.response_body
- 8.13.20. http.response_header
- 8.13.21. http.response_line
- 8.13.22. http.server
- 8.13.23. http.stat_code
- 8.13.24. http.stat_msg
- 8.13.25. file.data
- 8.13.26. http.connection
- 8.13.27. http.content_len
- 8.13.28. http.content_type
- 8.13.29. http.cookie
- 8.13.30. http.header
- 8.13.31. http.header.raw
- 8.13.32. http.header_names
- 8.13.33. http.protocol
- 8.13.34. http.start
- 8.14. File Keywords
- 8.15. DNS Keywords
- 8.16. SSL/TLS Keywords
- 8.16.1. tls.cert_subject
- 8.16.2. tls.cert_issuer
- 8.16.3. tls.cert_serial
- 8.16.4. tls.cert_fingerprint
- 8.16.5. tls.sni
- 8.16.6. tls.subjectaltname
- 8.16.7. tls_cert_notbefore
- 8.16.8. tls_cert_notafter
- 8.16.9. tls_cert_expired
- 8.16.10. tls_cert_valid
- 8.16.11. tls.certs
- 8.16.12. tls.version
- 8.16.13. ssl_version
- 8.16.14. tls.fingerprint
- 8.16.15. tls.store
- 8.16.16. ssl_state
- 8.16.17. tls.random
- 8.16.18. tls.random_time
- 8.16.19. tls.random_bytes
- 8.16.20. tls.cert_chain_len
- 8.16.21. tls.alpn
- 8.17. SSH Keywords
- 8.18. JA3/JA4 Keywords
- 8.19. Modbus Keyword
- 8.20. DCERPC Keywords
- 8.21. DHCP keywords
- 8.22. DNP3 Keywords
- 8.23. ENIP/CIP Keywords
- 8.23.1. enip_command
- 8.23.2. cip_service
- 8.23.3. enip.status
- 8.23.4. enip.protocol_version
- 8.23.5. enip.cip_attribute
- 8.23.6. enip.cip_instance
- 8.23.7. enip.cip_class
- 8.23.8. enip.cip_extendedstatus
- 8.23.9. enip.revision
- 8.23.10. enip.identity_status
- 8.23.11. enip.state
- 8.23.12. enip.serial
- 8.23.13. enip.product_code
- 8.23.14. enip.device_type
- 8.23.15. enip.vendor_id
- 8.23.16. enip.product_name
- 8.23.17. enip.service_name
- 8.23.18. enip.capabilities
- 8.23.19. enip.cip_status
- 8.24. FTP/FTP-DATA Keywords
- 8.25. Kerberos Keywords
- 8.26. SMB Keywords
- 8.27. SNMP keywords
- 8.28. Base64 keywords
- 8.29. SIP Keywords
- 8.30. SDP Keywords
- 8.30.1. sdp.origin
- 8.30.2. sdp.session_name
- 8.30.3. sdp.session_info
- 8.30.4. sdp.uri
- 8.30.5. sdp.email
- 8.30.6. sdp.phone_number
- 8.30.7. sdp.connection_data
- 8.30.8. sdp.bandwidth
- 8.30.9. sdp.time
- 8.30.10. sdp.repeat_time
- 8.30.11. sdp.timezone
- 8.30.12. sdp.encryption_key
- 8.30.13. sdp.attribute
- 8.30.14. sdp.media.media
- 8.30.15. sdp.media.session_info
- 8.30.16. sdp.media.connection_data
- 8.30.17. sdp.media.encryption_key
- 8.31. RFB Keywords
- 8.32. MQTT Keywords
- 8.32.1. mqtt.protocol_version
- 8.32.2. mqtt.type
- 8.32.3. mqtt.flags
- 8.32.4. mqtt.qos
- 8.32.5. mqtt.reason_code
- 8.32.6. mqtt.connack.session_present
- 8.32.7. mqtt.connect.clientid
- 8.32.8. mqtt.connect.flags
- 8.32.9. mqtt.connect.password
- 8.32.10. mqtt.connect.protocol_string
- 8.32.11. mqtt.connect.username
- 8.32.12. mqtt.connect.willmessage
- 8.32.13. mqtt.connect.willtopic
- 8.32.14. mqtt.publish.message
- 8.32.15. mqtt.publish.topic
- 8.32.16. mqtt.subscribe.topic
- 8.32.17. mqtt.unsubscribe.topic
- 8.32.18. Additional information
- 8.33. IKE Keywords
- 8.34. HTTP2 Keywords
- 8.35. Quic Keywords
- 8.36. NFS Keywords
- 8.37. SMTP Keywords
- 8.38. WebSocket Keywords
- 8.39. Generic App Layer Keywords
- 8.40. Generic Decode Layer Keywords
- 8.41. Xbits Keyword
- 8.42. Alert Keywords
- 8.43. Thresholding Keywords
- 8.44. IP Reputation Keyword
- 8.45. IP Addresses Match
- 8.46. Config Rules
- 8.47. Datasets
- 8.48. Lua Scripting for Detection
- 8.49. Differences From Snort
- 8.49.1. Automatic Protocol Detection
- 8.49.2.
urilenKeyword - 8.49.3.
http_uriBuffer - 8.49.4.
http_headerBuffer - 8.49.5.
http_cookieBuffer - 8.49.6. New HTTP keywords
- 8.49.7.
byte_extractKeyword - 8.49.8.
byte_jumpKeyword - 8.49.9.
byte_mathKeyword - 8.49.10.
byte_testKeyword - 8.49.11.
isdataatKeyword - 8.49.12. Relative PCRE
- 8.49.13.
tls*Keywords - 8.49.14.
dns_queryKeyword - 8.49.15. IP Reputation and
iprepKeyword - 8.49.16. Flowbits
- 8.49.17. flowbits:noalert;
- 8.49.18. Negated Content Match Special Case
- 8.49.19. File Extraction
- 8.49.20. Lua Scripting
- 8.49.21. Fast Pattern
- 8.49.22. Don't Cross The Streams
- 8.49.23. Alerts
- 8.49.24. Buffer Reference Chart
- 8.50. Multiple Buffer Matching
- 8.51. Tag
- 8.52. VLAN Keywords
- 8.53. LDAP Keywords
- 8.53.1. LDAP Request and Response operations
- 8.53.2. ldap.request.operation
- 8.53.3. ldap.responses.operation
- 8.53.4. ldap.responses.count
- 8.53.5. ldap.request.dn
- 8.53.6. ldap.responses.dn
- 8.53.7. ldap.responses.result_code
- 8.53.8. ldap.responses.message
- 8.53.9. ldap.request.attribute_type
- 8.53.10. ldap.responses.attribute_type
- 8.54. Rule Types and Categorization
- 8.54.1. Signature Properties
- 8.54.2. Signature Types and Variable-like Keywords
- 8.54.3. Signatures per Type
- 8.54.4. Detailed Flowcharts
- 8.55. Email Keywords