Creating a custom route

To redirect traffic from the internal VPC network via FortiGates:

1. In the Google Cloud console, go to VPC Networks.
2. Click the name of your internal network.
3. On the ROUTES tab, delete the existing default route to the Internet by selecting it and clicking DELETE.
4. Click ADD ROUTE.
5. Provide a name for your custom route.
6. In the Destination IP range field, enter 0.0.0.0/0.
7. From the Next hop dropdown list, select Specify a forwarding rule of internal TCP/UDP load balancer.
8. From the Forwarding rule name dropdown list, select the rule matching your internal load balancer.
9. Click CREATE.