I cannot seem to find a way to see allowed and denied traffic within my Google Cloud Platform logs. Is it true the GCP Firewall does not log allowed/denied traffic?
From the GCP firewall documentation:
GCP firewall cannot log as an action. It can only accept or reject a connection. GCP does not collect statistics per rule at this time.
This is now possible by enabling firewall rules logging. The logging is enabled in individual basis (for each firewall rule one is interested).