Coletar registros do Firewall do Google Cloud

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Este documento descreve como coletar registros do Google Cloud Firewall ativando a ingestão de telemetria do Google Cloud para o Google Security Operations e como os campos de registro do Google Cloud Firewall são mapeados para os campos do modelo de dados unificado (UDM, na sigla em inglês) do Google Security Operations. Neste documento, também listamos a versão compatível do firewall do Google Cloud.

Para mais informações, consulte Ingestão de dados para as operações de segurança do Google.

Uma implantação típica consiste em registros do Firewall do Google Cloud habilitados para ingestão no Google Security Operations. Cada implantação do cliente pode ser diferente dessa representação e ser mais complexa.

A implantação contém os seguintes componentes:

  • Google Cloud: os serviços e produtos do Google Cloud em que você coleta registros.

  • Registros do firewall do Google Cloud: os registros do firewall do Google Cloud que são ativado para ingestão no Google Security Operations.

  • Google Security Operations: retém e analisa os registros do Google Cloud Firewall.

Um rótulo de transferência identifica o analisador que normaliza os dados de registro brutos para o formato estruturado do UDM. As informações neste documento se aplicam ao analisador com o rótulo de ingestão GCP_FIREWALL.

Antes de começar

  • Verifique se você está usando a versão 1 do Google Cloud Firewall.

  • Verifique se todos os sistemas na arquitetura de implantação estão configurados no fuso horário UTC.

Configurar o Google Cloud para ingerir registros do Firewall do Google Cloud

Para ingerir registros do firewall do Google Cloud no Google Security Operations, siga as etapas na página Ingerir registros do Google Cloud nas operações de segurança do Google.

Em caso de problemas ao ingerir registros do Firewall do Google Cloud, entre em contato com o suporte das Operações de segurança do Google.

Referência do mapeamento de campo

A tabela a seguir lista os campos de registro do tipo de registro GCP_FIREWALL e os campos de UDM correspondentes.

Log field UDM mapping Logic
receiveTimestamp metadata.collected_timestamp
timestamp metadata.event_timestamp
logName metadata.product_event_type
metadata.event_type If the jsonPayload.connection.src_ip log field value is not empty and the jsonPayload.connection.dest_ip log field value is not empty, then the metadata.event_type UDM field is set to NETWORK_CONNECTION.

Else, if the jsonPayload.connection.src_ip log field value is not empty, then the metadata.event_type UDM field is set to STATUS_UNCATEGORIZED.

Else, the metadata.event_type UDM field is set to GENERIC_EVENT.
insertId metadata.product_log_id
metadata.product_name The metadata.product_name UDM field is set to GCP Firewall.
metadata.vendor_name The metadata.vendor_name UDM field is set to Google Cloud Platform.
jsonPayload.rule_details.direction network.direction If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the network.direction UDM field is set to OUTBOUND.

Else, if the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the network.direction UDM field is set to INBOUND.
jsonPayload.connection.protocol network.ip_protocol If the jsonPayload.connection.protocol log field value is equal to 6, then the network.ip_protocol UDM field is set to TCP.

If the jsonPayload.connection.protocol log field value is equal to 17, then the network.ip_protocol UDM field is set to UDP.

If the jsonPayload.connection.protocol log field value is equal to 1, then the network.ip_protocol UDM field is set to ICMP.

If the jsonPayload.connection.protocol log field value is equal to 2, then the network.ip_protocol UDM field is set to IGMP.
jsonPayload.connection.src_ip principal.ip
jsonPayload.remote_location.continent principal.labels[remote_location_continent] (deprecated) If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.remote_location.continent log field is mapped to the principal.labels.remote_location_continent UDM field.
jsonPayload.remote_location.continent additional.fields[remote_location_continent] If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.remote_location.continent log field is mapped to the additional.fields.remote_location_continent UDM field.
jsonPayload.remote_location.city principal.location.city If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.remote_location.city log field is mapped to the principal.location.city UDM field.
jsonPayload.remote_location.country principal.location.country_or_region If the jsonPayload.remote_location.country log field value is not empty or the jsonPayload.remote_location.region log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.remote_location.country jsonPayload.remote_location.region log field is mapped to the principal.location.country_or_region UDM field.
jsonPayload.remote_location.region principal.location.country_or_region If the jsonPayload.remote_location.country log field value is not empty or the jsonPayload.remote_location.region log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.remote_location.country jsonPayload.remote_location.region log field is mapped to the principal.location.country_or_region UDM field.
jsonPayload.instance.region principal.location.name If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.instance.region log field is mapped to the principal.location.name UDM field.
jsonPayload.remote_instance.region principal.location.name If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.remote_instance.region log field is mapped to the principal.location.name UDM field.
jsonPayload.connection.src_port principal.port
resource.labels.location principal.resource_ancestors.attribute.cloud.availability_zone If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the resource.labels.location log field is mapped to the principal.resource_ancestors.attribute.cloud.availability_zone UDM field.
jsonPayload.vpc.vpc_name principal.resource_ancestors.name If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.vpc.vpc_name log field is mapped to the principal.resource_ancestors.name UDM field.
jsonPayload.vpc.subnetwork_name principal.resource_ancestors.name If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.vpc.subnetwork_name log field is mapped to the principal.resource_ancestors.name UDM field.
jsonPayload.remote_vpc.vpc_name principal.resource_ancestors.name If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.remote_vpc.vpc_name log field is mapped to the principal.resource_ancestors.name UDM field.
jsonPayload.remote_vpc.subnetwork_name principal.resource_ancestors.name If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.remote_vpc.subnetwork_name log field is mapped to the principal.resource_ancestors.name UDM field.
jsonPayload.vpc.project_id principal.resource_ancestors.product_object_id If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.vpc.project_id log field is mapped to the principal.resource_ancestors.product_object_id UDM field.
jsonPayload.remote_vpc.project_id principal.resource_ancestors.product_object_id If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.remote_vpc.project_id log field is mapped to the principal.resource_ancestors.product_object_id UDM field.
resource.labels.subnetwork_id principal.resource_ancestors.product_object_id If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the resource.labels.subnetwork_id log field is mapped to the principal.resource_ancestors.product_object_id UDM field.
resource.type principal.resource_ancestors.resource_subtype If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the resource.type log field is mapped to the principal.resource_ancestors.resource_subtype UDM field.
principal.resource_ancestors.resource_type If the jsonPayload.vpc.vpc_name log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the principal.resource_ancestors.resource_type UDM field is set to VPC_NETWORK.

If the jsonPayload.vpc.project_id log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the principal.resource_ancestors.resource_type UDM field is set to CLOUD_PROJECT.

If the jsonPayload.remote_vpc.vpc_name log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the principal.resource_ancestors.resource_type UDM field is set to VPC_NETWORK.

If the jsonPayload.remote_vpc.project_id log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the principal.resource_ancestors.resource_type UDM field is set to CLOUD_PROJECT.
jsonPayload.instance.zone principal.resource.attribute.cloud.availability_zone If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.instance.zone log field is mapped to the principal.resource.attribute.cloud.availability_zone UDM field.
jsonPayload.remote_instance.zone principal.resource.attribute.cloud.availability_zone If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.remote_instance.zone log field is mapped to the principal.resource.attribute.cloud.availability_zone UDM field.
jsonPayload.instance.vm_name principal.resource.name If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.instance.vm_name log field is mapped to the principal.resource.name UDM field.
jsonPayload.remote_instance.vm_name principal.resource.name If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.remote_instance.vm_name log field is mapped to the principal.resource.name UDM field.
principal.resource.resource_type If the jsonPayload.instance.vm_name log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the principal.resource.resource_type UDM field is set to VIRTUAL_MACHINE.

If the jsonPayload.remote_instance.vm_name log field value is not empty the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the principal.resource.resource_type UDM field is set to VIRTUAL_MACHINE.
security_result.action If the jsonPayload.rule_details.disposition log field value is equal to ALLOWED, then the security_result.action UDM field is set to ALLOW.

Else, if the jsonPayload.rule_details.disposition log field value is equal to DENIED, then the security_result.action UDM field is set to BLOCK.
jsonPayload.disposition security_result.action_details
jsonPayload.rule_details.reference security_result.description
jsonPayload.rule_details.priority security_result.priority_details
resource.labels.firewall_rule_id security_result.rule_id
jsonPayload.rule_details.action security_result.rule_labels[rule_details_action]
jsonPayload.rule_details.destination_address_groups security_result.rule_labels[rule_details_destination_address_groups]
jsonPayload.rule_details.destination_fqdn security_result.rule_labels[rule_details_destination_fqdn]
jsonPayload.rule_details.destination_range security_result.rule_labels[rule_details_destination_range]
jsonPayload.rule_details.destination_region_code security_result.rule_labels[rule_details_destination_region_code]
jsonPayload.rule_details.destination_threat_intelligence security_result.rule_labels[rule_details_destination_threat_intelligence]
jsonPayload.rule_details.ip_port_info.ip_protocol security_result.rule_labels[rule_details_ip_port_info_ip_protocol]
jsonPayload.rule_details.ip_port_info.port_range security_result.rule_labels[rule_details_ip_port_info_port_range]
jsonPayload.rule_details.source_address_groups security_result.rule_labels[rule_details_source_address_groups]
jsonPayload.rule_details.source_fqdn security_result.rule_labels[rule_details_source_fqdn]
jsonPayload.rule_details.source_range security_result.rule_labels[rule_details_source_range]
jsonPayload.rule_details.source_region_code security_result.rule_labels[rule_details_source_region_code]
jsonPayload.rule_details.source_service_account security_result.rule_labels[rule_details_source_service_account]
jsonPayload.rule_details.source_tag security_result.rule_labels[rule_details_source_tag]
jsonPayload.rule_details.source_threat_intelligence security_result.rule_labels[rule_details_source_threat_intelligence]
jsonPayload.rule_details.target_service_account security_result.rule_labels[rule_details_target_service_account]
jsonPayload.rule_details.target_tag security_result.rule_labels[rule_details_target_tag]
security_result.rule_name Extracted rule_name from jsonPayload.rule_details.reference using Grok pattern and mapped it to the security_result.rule_name UDM field.
jsonPayload.connection.dest_ip target.ip
jsonPayload.remote_location.continent target.labels[remote_location_continent] (deprecated) If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.remote_location.continent log field is mapped to the target.labels.remote_location_continent UDM field.
jsonPayload.remote_location.continent additional.fields[remote_location_continent] If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.remote_location.continent log field is mapped to the additional.fields.remote_location_continent UDM field.
jsonPayload.remote_location.city target.location.city If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.remote_location.city log field is mapped to the target.location.city UDM field.
jsonPayload.remote_location.country target.location.country_or_region If the jsonPayload.remote_location.country log field value is not empty or the jsonPayload.remote_location.region log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.remote_location.country jsonPayload.remote_location.region log field is mapped to the target.location.country_or_region UDM field.
jsonPayload.remote_location.region target.location.country_or_region If the jsonPayload.remote_location.country log field value is not empty or the jsonPayload.remote_location.region log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.remote_location.country jsonPayload.remote_location.region log field is mapped to the target.location.country_or_region UDM field.
jsonPayload.instance.region target.location.name If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.instance.region log field is mapped to the target.location.name UDM field.
jsonPayload.remote_instance.region target.location.name If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.remote_instance.region log field is mapped to the target.location.name UDM field.
jsonPayload.connection.dest_port target.port
resource.labels.location target.resource_ancestors.attribute.cloud.availability_zone If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the resource.labels.location log field is mapped to the target.resource_ancestors.attribute.cloud.availability_zone UDM field.
jsonPayload.vpc.vpc_name target.resource_ancestors.name If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.vpc.vpc_name log field is mapped to the target.resource_ancestors.name UDM field.
jsonPayload.vpc.subnetwork_name target.resource_ancestors.name If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.vpc.subnetwork_name log field is mapped to the target.resource_ancestors.name UDM field.
jsonPayload.remote_vpc.vpc_name target.resource_ancestors.name If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.remote_vpc.vpc_name log field is mapped to the target.resource_ancestors.name UDM field.
jsonPayload.remote_vpc.subnetwork_name target.resource_ancestors.name If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.remote_vpc.subnetwork_name log field is mapped to the target.resource_ancestors.name UDM field.
jsonPayload.vpc.project_id target.resource_ancestors.product_object_id If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.vpc.project_id log field is mapped to the target.resource_ancestors.product_object_id UDM field.
jsonPayload.remote_vpc.project_id target.resource_ancestors.product_object_id If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.remote_vpc.project_id log field is mapped to the target.resource_ancestors.product_object_id UDM field.
resource.labels.subnetwork_id target.resource_ancestors.product_object_id If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the resource.labels.subnetwork_id log field is mapped to the target.resource_ancestors.product_object_id UDM field.
resource.type target.resource_ancestors.resource_subtype
target.resource_ancestors.resource_type If the jsonPayload.remote_vpc.vpc_name log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the target.resource_ancestors.resource_type UDM field is set to VPC_NETWORK.

If the jsonPayload.remote_vpc.project_id log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the target.resource_ancestors.resource_type UDM field is set to CLOUD_PROJECT.

If the jsonPayload.vpc.vpc_name log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the target.resource_ancestors.resource_type UDM field is set to VPC_NETWORK.

If the jsonPayload.vpc.project_id log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the target.resource_ancestors.resource_type UDM field is set to CLOUD_PROJECT.
jsonPayload.instance.zone target.resource.attribute.cloud.availability_zone If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.instance.zone log field is mapped to the target.resource.attribute.cloud.availability_zone UDM field.
jsonPayload.remote_instance.zone target.resource.attribute.cloud.availability_zone If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.remote_instance.zone log field is mapped to the target.resource.attribute.cloud.availability_zone UDM field.
jsonPayload.instance.vm_name target.resource.name If the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the jsonPayload.instance.vm_name log field is mapped to the target.resource.product_object_id UDM field.
jsonPayload.remote_instance.vm_name target.resource.name If the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the jsonPayload.remote_instance.vm_name log field is mapped to the target.resource.name UDM field.
target.resource.resource_type If the jsonPayload.remote_instance.vm_name log field value is not empty and the jsonPayload.rule_details.direction log field value is equal to EGRESS, then the target.resource.resource_type UDM field is set to VIRTUAL_MACHINE.

If the jsonPayload.instance.vm_name log field value is not empty the jsonPayload.rule_details.direction log field value is equal to INGRESS, then the target.resource.resource_type UDM field is set to VIRTUAL_MACHINE.

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