All public clouds will provide a packet monitoring option in the way of flow logs (VPC Flow Logs)

However, packet monitoring is not the same as packet filtering.

The closest that GCP has is a service called Packet Mirroring which will allow you to dump traffic after the fact (after an incident has occured).

For true, live packet filtering, you need a custom  security appliance - like a Palo Alto FW or a Cisco FW or a Fortinet FW  appliance. These are available from all public cloud marketplaces.