Decode CEF

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Decode CEF

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The decode_cef processor decodes Common Event Format (CEF) messages.

This processor only works with log inputs.

Example

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In this example, the message field is decoded as CEF after it is renamed to event.original. It is best to rename message to event.original because the decoded CEF data contains its own message field.

  - rename:
      fields:
        - {from: "message", to: "event.original"}
  - decode_cef:
      field: event.original

Configuration settings

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Elastic Agent processors execute before ingest pipelines, which means that your processor configurations cannot refer to fields that are created by ingest pipelines or Logstash. For more limitations, refer to What are some limitations of using processors?

Name	Required	Default	Description
`field`	No	`message`	Source field containing the CEF message to be parsed.
`target_field`	No	`cef`	Target field where the parsed CEF object will be written.
`ecs`	No	`true`	Whether to generate Elastic Common Schema (ECS) fields from the CEF data. Certain CEF header and extension values will be used to populate ECS fields.
`timezone`	No	`UTC`	IANA time zone name (for example, `America/New_York`) or fixed time offset (for example, `+0200`) to use when parsing times that do not contain a time zone. Specify `Local` to use the machine’s local time zone.
`ignore_missing`	No	`false`	Whether to ignore errors when the source field is missing.
`ignore_failure`	No	false	Whether to ignore failures when the source field does not contain a CEF message.
`id`	No		Identifier for this processor instance. Useful for debugging.

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