Change log for AWS_ELB

Date Changes
2026-01-23 Enhancement:
- Added a grok pattern to parse new log formats.
- event.idm.read_only_udm.target.user.userid: Newly mapped bucket_owner_id raw log field with event.idm.read_only_udm.target.user.userid UDM field.
- event.idm.read_only_udm.target.resource.name: Newly mapped bucket raw log field with event.idm.read_only_udm.target.resource.name UDM field.
- event.idm.read_only_udm.metadata.product_event_type: Newly mapped operation raw log field with event.idm.read_only_udm.metadata.product_event_type UDM field.
- event.idm.read_only_udm.additional.fields: Newly mapped signature, auth_type, auth_header, turn_around_time raw log field with event.idm.read_only_udm.additional.fields UDM field.
- event.idm.read_only_udm.target.hostname: Newly mapped hostname raw log field with event.idm.read_only_udm.target.hostname UDM field.
- event.idm.read_only_udm.metadata.product_version: Newly mapped http_version raw log field with event.idm.read_only_udm.metadata.product_version UDM field.
- event.idm.read_only_udm.principal.user.userid: Newly mapped id raw log field with event.idm.read_only_udm.principal.user.userid UDM field.
- event.idm.read_only_udm.target.file.size: Newly mapped object_size raw log field with event.idm.read_only_udm.target.file.size UDM field.
- event.idm.read_only_udm.metadata.event_type: If target_ip, target_hostname, dst_ip, hostname, and bucket are empty, updated to GENERIC_EVENT.
- event.idm.read_only_udm.metadata.event_type: If client_ip is not empty, updated to NETWORK_HTTP.
- event.idm.read_only_udm.metadata.event_type: Otherwise, updated to USER_RESOURCE_ACCESS.
2025-02-19 Enhancement:
- Added support for new format of syslog logs.
- Mapped sec_status to security_result.action.
- Mapped grp_identifiers to principal.user.group_identifiers.
- Mapped http_version to network.application_protocol_version.
- Mapped useragent to network.http.user_agent.
- Mapped severity_level to security_result.severity.
- Mapped pid to principal.process.pid.
- Mapped port to principal.port.
- Mapped desc to metadata.description.
- Mapped int_host to intermediary.hostname.
- Mapped int_port to intermediary.port.
- Mapped tid to additional.fields.
- Added a Grok pattern to parse sent_bytes.
2024-11-12 Enhancement:
- Added support to parse new format of syslog logs.
2024-03-22 Enhancement:
- Added new Grok pattern to support new pattern of JSON logs.
- Added support for CEF pattern logs.
- Mapped dst_ip to target.ip.
- Mapped dst_port to target.port.
- Mapped sip to principal.ip.
- Mapped request_processing_time, target_processing_time, siteid, fileId, and response_processing_time to security_result.detection.fields.
- Aligned mappings for principal.ip and principal.asset.ip.
- Aligned mappings for target.ip and target.asset.ip.
- Aligned mappings for target.hostname and target.asset.hostname.
- Mapped cipher to network.tls.cipher.
- Mapped version to network.tls.version.
- Mapped Customer to principal.user.user_display_name.
2022-05-27 Enhancement - Modified the value stored in metadata.product_name to AWS Elastic Load Balancer.