TimeSeriesTCPData

TCP-related data

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Properties

Name	Type	Description
ja4t	array	List of JA4T TCP fingerprints observed in network traffic from the IP. JA4T captures TCP connection characteristics such as window size, options, and MSS, useful for OS fingerprinting and identifying
ja4l	string	JA4L light distance/latency fingerprint observed in network traffic from the IP. Captures TCP TTL and window size characteristics, useful for estimating client-server distance and identifying proxied

View JSON Schema on GitHub

JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api-evangelist.github.io/greynoise/json-schema/greynoise-time-series-tcp-data-schema.json",
  "title": "TimeSeriesTCPData",
  "type": "object",
  "description": "TCP-related data",
  "properties": {
    "ja4t": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "List of JA4T TCP fingerprints observed in network traffic from the IP.\nJA4T captures TCP connection characteristics such as window size,\noptions, and MSS, useful for OS fingerprinting and identifying\nnetwork stacks.\n",
      "example": [
        "64240_2-1-3-1-1-4_1460_8"
      ]
    },
    "ja4l": {
      "type": "string",
      "description": "JA4L light distance/latency fingerprint observed in network traffic\nfrom the IP. Captures TCP TTL and window size characteristics, useful\nfor estimating client-server distance and identifying proxied\nconnections.\n",
      "example": "1460_64"
    }
  }
}