Merge 39ca5c9 into 1d24188

Author: brown9804

3_networking/firewall/README.md

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+# Terraform Template - Azure Firewall
+
+Costa Rica
+
+[![GitHub](https://img.shields.io/badge/--181717?logo=github&logoColor=ffffff)](https://github.com/)
+[brown9804](https://github.com/brown9804)
+
+Last updated: 2025-06-12
+
+----------
+
+> This template contains Terraform configurations to create and manage an Azure Firewall, including a public IP and required subnet configuration.
+
+> [!NOTE]
+> The subnet used for Azure Firewall **must** be named `AzureFirewallSubnet` and sized at least /26.
+
+<p align="center">
+    <img width="800" alt="image" src="https://github.com/user-attachments/assets/7614ce31-c57d-41ce-a9f2-307c29cb0f3d">
+</p>
+
+
+
+## File Descriptions
+
+- **main.tf**: Contains the main configuration for creating the Azure Firewall and its supporting resources.
+- **variables.tf**: Defines the input variables used in the Terraform configuration.
+- **terraform.tfvars**: Provides default values for the variables defined in `variables.tf`.
+- **outputs.tf**: Defines the outputs such as Firewall ID and public IP address.
+
+## Variables
+
+| Variable Name         | Description                                      | Type   | Example Value                |
+|---------------------- |--------------------------------------------------|--------|-----------------------------|
+| `resource_group_name` | The name of the resource group                   | string | `"my-firewall-rg"`          |
+| `location`            | The Azure region to deploy resources             | string | `"eastus"`                  |
+| `firewall_name`       | The name of the Azure Firewall                   | string | `"my-azfw"`                 |
+| `public_ip_name`      | The name of the public IP address for the firewall | string | `"my-azfw-pip"`           |
+| `subnet_id`           | The ID of the subnet for the Azure Firewall      | string | `".../subnets/AzureFirewallSubnet"` |
+
+## Usage
+
+1. Clone the repository and navigate to the firewall directory.
+2. Update the `terraform.tfvars` file with your values.
+3. Initialize and apply the Terraform configuration:
+
+```bash
+terraform init
+terraform plan
+terraform apply
+```
+
+## Outputs
+
+| Output Name         | Description                                 |
+|---------------------|---------------------------------------------|
+| `firewall_id`       | The ID of the Azure Firewall                |
+| `firewall_public_ip`| The public IP address of the Azure Firewall |
+
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