AI Data Transfer Security with OCI CPE VPN

Question

Pulumi · Accepted Answer

To set up a secure data transfer with Oracle Cloud Infrastructure (OCI) using a Customer Premises Equipment (CPE) and a VPN connection, you will require the following resources and steps:

1. **Customer Premises Equipment (CPE)**: This represents the physical or virtual device at your premises that you use to establish the IPSec VPN connection to your Virtual Cloud Network (VCN) in OCI.

2. **IPSec Connection**: This encapsulates the VPN connection and its details. It comprises multiple tunnels for redundancy.

3. **Dynamic Routing Gateway (DRG)**: A virtual router that you attach to your VCN to provide a path for private network traffic between your VCN and on-premises network.

4. **Routing**: Configuration of traffic routes to direct packets to the right destination, which is especially important for ensuring your traffic goes through the VPN tunnels.

5. **Tunnel Management**: For each tunnel in the IPSec connection, you will have specific settings (like encryption and routing) to be managed.

Below is a Pulumi Python program that sets up a VPN using the OCI provider resources. The program does the following:

- Creates an OCI CPE, which represents your on-premises VPN equipment.
- Creates a DRG and attaches it to a VCN.
- Sets up an IPSec connection between the CPE and the DRG.

```python
import pulumi
import pulumi_oci as oci

# Configurations
compartment_id = "ocid1.compartment.oc1..exampleuniqueID" # Change this to your compartment OCID
vcn_id = "ocid1.vcn.oc1..exampleuniqueID"                 # Change this to your VCN OCID
cpe_device_shape_id = "ocid1.cpedeviceshape.oc1..example" # Change this to the OCID of a CPE device shape if needed

# Creating a Customer-Premises Equipment (CPE) object
cpe = oci.core.Cpe("myCpe",
                   compartment_id=compartment_id,
                   display_name="myCpeDisplayName",
                   cpe_device_shape_id=cpe_device_shape_id,
                   freeform_tags={
                       "Name": "myCpe"
                   },
                   ip_address="192.0.2.0") # Use the public IP address of your on-premises router

# Creating a Dynamic Routing Gateway (DRG)
drg = oci.core.Drg("myDrg",
                   compartment_id=compartment_id,
                   display_name="myDrgDisplayName")

# Attaching the DRG to a VCN
drg_attachment = oci.core.DrgAttachment("myDrgAttachment",
                                        compartment_id=compartment_id,
                                        drg_id=drg.id,
                                        vcn_id=vcn_id)

# Creating an IPSec Connection
ipsec = oci.core.Ipsec("myIpsec",
                       compartment_id=compartment_id,
                       cpe_id=cpe.id,
                       drg_id=drg.id,
                       static_routes=["0.0.0.0/0"]) # Configures the IPSec to route all traffic. Adjust as required.

# Exporting the DRG ID and IPSec Connection ID
pulumi.export("drg_id", drg.id)
pulumi.export("ipsec_id", ipsec.id)
```

In this program, you define the necessary resources for establishing a VPN connection. It begins by creating a CPE resource configured with the public IP address of your on-premises router, and it assigns a name and (optionally) a CPE device shape ID.

Following that, a new DRG is created. It's attached to an existing VCN (you need to provide the IDs for your compartment and VCN).

Finally, an IPSec connection is established between the CPE and DRG. You configure it to route all traffic through the VPN connection by specifying `0.0.0.0/0` as the static route.

To deploy this infrastructure, save the code in a file named `main.py`, set up the Pulumi CLI, configure the OCI provider properly with the necessary credentials, and run `pulumi up` through the terminal.

Please replace placeholder IDs and IP addresses with actual values that correspond to your OCI environment. The `freeform_tags` are also optional and customizable to suit your organizational practices.

Make sure you complete the VPN configuration by setting up your on-premises router with information based on the created CPE and IPSec resources if additional manual steps are required.