Documentation forSolarWinds Observability

NAT Gateway metrics

AWS NAT gateways are Network Address Translation (NAT) services. You can use a NAT gateway so that instances in a private subnet can connect to services outside your VPC but external services cannot initiate a connection with those instances.Ensure your cloud platform is configured in SolarWinds Observability to collect this service's data. See Add an AWS cloud account. CloudWatch metrics must also be enabled for this service in the AWS Console for the metric data to be available.

Many of the collected metrics from AWS NAT Gateway entities are displayed as widgets in SolarWinds Observability explorers; additional metrics may be collected and available in the Metrics Explorer. You can also create an alert for when an entity's metric value moves out of a specific range. See Entities in SolarWinds Observability for information about entity types in SolarWinds Observability.

The following table lists some of the metrics collected for these entities. To see the AWS NAT Gateway metrics in the Metrics Explorer, type AWS.NATGateway in the search box.

Metric Units Description
sw.metrics.healthscore Percent (%)

Health score. A health score provides real-time insight into the overall health and performance of your monitored entities. The health score is calculated based on anomalies detected for the entity, alerts triggered for the entity's metrics, and the status of the entity. The health score is displayed as a single numerical value that ranges from a Good (70-100) to Moderate (40-69) to Bad (0-39) distinction.

To view the health score for AWS NAT Gateway entities in the Metrics Explorer, filter the sw.metrics.healthscore metric by entity_types and select awsnatgateway.

AWS.NATGateway.ActiveConnectionCount

ActiveConnectionCount. The maximum number of concurrent active TCP connections through the NAT gateway.

AWS.NATGateway.BytesInFromDestination

BytesInFromDestination. The total number of bytes received by the NAT gateway from the destination.

AWS.NATGateway.BytesInFromSource

BytesInFromSource. The total number of bytes received by the NAT gateway from clients in VPC.

AWS.NATGateway.BytesOutToDestination

BytesOutToDestination. The total number of bytes sent out through the NAT gateway to the destination.

AWS.NATGateway.BytesOutToSource

BytesOutToSource. The total number of bytes sent through the NAT gateway to the clients in VPC.

AWS.NATGateway.ConnectionAttemptCount

ConnectionAttemptCount. The total number of connection attempts made through the NAT gateway.

AWS.NATGateway.ConnectionEstablishedCount

ConnectionEstablishedCount. The total number of connections established through the NAT gateway.

AWS.NATGateway.ErrorPortAllocation

ErrorPortAllocation. The total number of times the NAT gateway could not allocate a source port.

AWS.NATGateway.IdleTimeoutCount

IdleTimeoutCount. The total number of connections that transitioned from the active state to the idle state.

AWS.NATGateway.PacketsDropCount

PacketsDropCount. The total number of packets dropped by the NAT gateway.

AWS.NATGateway.PacketsInFromDestination

PacketsInFromDestination. The total number of packets received by the NAT gateway from the destination.

AWS.NATGateway.PacketsInFromSource

PacketsInFromSource. The total number of packets received by the NAT gateway from clients in VPC.

AWS.NATGateway.PacketsOutToDestination

PacketsOutToDestination. The total number of packets sent out through the NAT gateway to the destination.

AWS.NATGateway.PacketsOutToSource

PacketsOutToSource. The total number of packets sent through the NAT gateway to the clients in VPC.