portRange

The ports, portRange, and allPorts fields are mutually exclusive. Only packets addressed to ports in the specified range will be forwarded to the backends configured with this forwarding rule. The portRange field has the following limitations:

• It requires that the forwarding rule IPProtocol be TCP, UDP, or SCTP, and

• It's applicable only to the following products: external passthrough Network Load Balancers, internal and external proxy Network Load Balancers, internal and external Application Load Balancers, external protocol forwarding, and Classic VPN.

• Some products have restrictions on what ports can be used. See port specifications for details. For external forwarding rules, two or more forwarding rules cannot use the same [IPAddress, IPProtocol] pair, and cannot have overlapping portRanges. For internal forwarding rules within the same VPC network, two or more forwarding rules cannot use the same [IPAddress, IPProtocol] pair, and cannot have overlapping portRanges.