- In the OCI console, go to Networking > Virtual Cloud Networks > Subnets.
- Ensure that the VCN contains the following eight subnets (four in AD1 and four in AD2):
External data traffic on the public network-facing side.
Internal data traffic on the protected/trusted network-facing side.
Heartbeat between two FortiGate nodes. This is unicast communication.
Dedicated management interface use.
- Go to Route Tables.
- Configure an internal routing table, setting the default gateway as FGT-A-AD1 NIC2's primary IP address (10.0.12.21). You can create this routing table after configuring NIC2 on FGT-A-AD1. Two subnets, net12-internal and net22-internal, use this routing table.
- Configure an external routing table, setting the default gateway as this VCN's Internet gateway. The remaining six subnets use this routing table.