Configuring Google Cloud firewall rules
You must open incoming port(s) to access FortiProxy over the Internet.
HTTPS is the first port that is needed. Other ports are optional depending on what features are enabled. See FortiProxy Ports for a list of incoming and outgoing ports.
- Go to the VPC where the public-facing subnet belongs for the FortiProxy.
- Select Firewall rule, then Add firewall rule if the required port is not open.