Associating firewall policy to a GCP VPC network.

Question

Pulumi · Accepted Answer

To associate a firewall policy with a GCP VPC network, you will use the `gcp.compute.FirewallPolicyAssociation` resource. This resource allows you to create an association between a firewall policy and a target, such as a VPC network.

Before you create the association, you must have a firewall policy and a network to which you would like to attach the policy.

Here's a program written in TypeScript that demonstrates how to associate a firewall policy with a VPC network using Pulumi:

```typescript
import * as gcp from "@pulumi/gcp";

// Assume there is already an existing network and firewall policy to be associated.
const vpcNetworkName = "your-vpc-network-name"; // Replace with your VPC network name
const firewallPolicyName = "your-firewall-policy-name"; // Replace with your firewall policy name

// Create the FirewallPolicyAssociation resource.
const firewallPolicyAssociation = new gcp.compute.FirewallPolicyAssociation("firewallPolicyAssociation", {
    // The name of the association; usually matches the firewall policy, but it's customizable
    name: `${firewallPolicyName}-association`,
    // The name of your existing firewall policy
    firewallPolicy: `projects/${gcp.config.project}/global/firewalls/${firewallPolicyName}`,
    // The target the firewall policy should be applied to - here it is the URL of the VPC network
    attachmentTarget: `projects/${gcp.config.project}/global/networks/${vpcNetworkName}`,
});

// Export the name of the association
export const firewallPolicyAssociationName = firewallPolicyAssociation.name;
```

1. First, import the required `gcp` module from Pulumi's GCP provider.
2. Define the existing VPC network and firewall policy names.
3. Create an instance of `gcp.compute.FirewallPolicyAssociation`.
4. You need to specify a unique name for the association, the name of the firewall policy (specified as a GCP global resource URL), and the target network.
5. Lastly, you can export the name of the firewall policy association for use elsewhere or for reference.

This `gcp.compute.FirewallPolicyAssociation` resource is used to attach the named firewall policy to the specified VPC network, enforcing the rules defined in the firewall policy for resources within the associated network.

For more detailed information about the properties you can set on a `gcp.compute.FirewallPolicyAssociation`, refer to the [Pulumi documentation on FirewallPolicyAssociation](https://www.pulumi.com/registry/packages/gcp/api-docs/compute/firewallpolicyassociation/). This will provide you with comprehensive details about the resource, its properties, and any applicable options you might need based on your specific infrastructure requirements.