azfw quickstarts (#245)

* adding azfw quickstarts

quickstart/101-azfw-with-fwpolicy/main.tf

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+resource "random_pet" "rg-name" {
+  prefix = var.resource_group_name_prefix
+}
+
+resource "azurerm_resource_group" "rg" {
+  name     = random_pet.rg-name.id
+  location = var.resource_group_location
+}
+
+resource "azurerm_virtual_network" "azfw_vnet" {
+  name                = "azfw-vnet"
+  location            = azurerm_resource_group.rg.location
+  resource_group_name = azurerm_resource_group.rg.name
+  address_space       = ["10.10.0.0/24"]
+}
+
+resource "azurerm_ip_group" "workload_ip_group" {
+  name                = "workload-ip-group"
+  resource_group_name = azurerm_resource_group.rg.name
+  location            = azurerm_resource_group.rg.location
+  cidrs               = ["10.20.0.0/24", "10.30.0.0/24"]
+}
+resource "azurerm_ip_group" "infra_ip_group" {
+  name                = "infra-ip-group"
+  resource_group_name = azurerm_resource_group.rg.name
+  location            = azurerm_resource_group.rg.location
+  cidrs               = ["10.40.0.0/24", "10.50.0.0/24"]
+}
+
+resource "azurerm_subnet" "azfw_subnet" {
+  name                 = "AzureFirewallSubnet"
+  resource_group_name  = azurerm_resource_group.rg.name
+  virtual_network_name = azurerm_virtual_network.azfw_vnet.name
+  address_prefixes     = ["10.10.0.0/26"]
+}
+
+resource "azurerm_public_ip" "pip_azfw" {
+  name                = "pip-azfw"
+  location            = azurerm_resource_group.rg.location
+  resource_group_name = azurerm_resource_group.rg.name
+  allocation_method   = "Static"
+  sku                 = "Standard"
+}
+
+resource "azurerm_firewall_policy" "azfw_policy" {
+  name                     = "azfw-policy"
+  resource_group_name      = azurerm_resource_group.rg.name
+  location                 = azurerm_resource_group.rg.location
+  sku                      = var.firewall_sku_tier
+  threat_intelligence_mode = "Alert"
+}
+
+resource "azurerm_firewall_policy_rule_collection_group" "net_policy_rule_collection_group" {
+  name               = "DefaultNetworkRuleCollectionGroup"
+  firewall_policy_id = azurerm_firewall_policy.azfw_policy.id
+  priority           = 200
+  network_rule_collection {
+    name     = "DefaultNetworkRuleCollection"
+    action   = "Allow"
+    priority = 200
+    rule {
+      name                  = "time-windows"
+      protocols             = ["UDP"]
+      source_ip_groups      = [azurerm_ip_group.workload_ip_group.id, azurerm_ip_group.infra_ip_group.id]
+      destination_ports     = ["123"]
+      destination_addresses = ["132.86.101.172"]
+    }
+  }
+}
+
+resource "azurerm_firewall_policy_rule_collection_group" "app_policy_rule_collection_group" {
+  name               = "DefaulApplicationtRuleCollectionGroup"
+  firewall_policy_id = azurerm_firewall_policy.azfw_policy.id
+  priority           = 300
+  application_rule_collection {
+    name     = "DefaultApplicationRuleCollection"
+    action   = "Allow"
+    priority = 500
+    rule {
+      name = "AllowWindowsUpdate"
+
+      description = "Allow Windows Update"
+      protocols {
+        type = "Http"
+        port = 80
+      }
+      protocols {
+        type = "Https"
+        port = 443
+      }
+      source_ip_groups      = [azurerm_ip_group.workload_ip_group.id, azurerm_ip_group.infra_ip_group.id]
+      destination_fqdn_tags = ["WindowsUpdate"]
+    }
+    rule {
+      name        = "Global Rule"
+      description = "Allow access to Microsoft.com"
+      protocols {
+        type = "Https"
+        port = 443
+      }
+      destination_fqdns = ["*.microsoft.com"]
+      terminate_tls     = false
+      source_ip_groups  = [azurerm_ip_group.workload_ip_group.id, azurerm_ip_group.infra_ip_group.id]
+    }
+  }
+}
+
+resource "azurerm_firewall" "fw" {
+  name                = "azfw"
+  location            = azurerm_resource_group.rg.location
+  resource_group_name = azurerm_resource_group.rg.name
+  sku_name            = "AZFW_VNet"
+  sku_tier            = var.firewall_sku_tier
+  ip_configuration {
+    name                 = "azfw-ipconfig"
+    subnet_id            = azurerm_subnet.azfw_subnet.id
+    public_ip_address_id = azurerm_public_ip.pip_azfw.id
+  }
+  firewall_policy_id = azurerm_firewall_policy.azfw_policy.id
+}

quickstart/101-azfw-with-fwpolicy/outputs.tf

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+output "resource_group_name" {
+  value = azurerm_resource_group.rg.name
+}
+
+output "firewall_name" {
+  value = azurerm_firewall.fw.name
+}

quickstart/101-azfw-with-fwpolicy/provider.tf

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+terraform {
+  required_providers {
+    azurerm = {
+      source  = "hashicorp/azurerm"
+      version = "~>3.0"
+    }
+    random = {
+      source  = "hashicorp/random"
+      version = "~>3.0"
+    }
+  }
+}
+
+provider "azurerm" {
+  features {}
+}

quickstart/101-azfw-with-fwpolicy/readme.md

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+# Azure Firewall and Azure Firewall Policy
+
+This template deploys an [Azure Firewall](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/firewall) with an [Azure Firewall Policy](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/firewall_policy)
+
+## Terraform resource types
+
+- [azurerm_resource_group](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/resource_group)
+- [azurerm_virtual_network](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/virtual_network)
+- [azurerm_subnet](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/subnet)
+- [azurerm_ip_group](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/ip_group)
+- [azurerm_public_ip](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/public_ip)
+- [azurerm_firewall_policy](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/firewall_policy)
+- [azurerm_firewall_policy_rule_collection_group](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/firewall_policy_rule_collection_group)
+- [azurerm_firewall](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/firewall)
+
+## Variables
+
+| Name | Description | Default value |
+|-|-|-|
+| `resource_group_location` | location for your resources                    | eastus  |
+| `firewall_sku_tier`       | Sku size for your Firewall and Firewall Policy | Premium |
+
+## Example

quickstart/101-azfw-with-fwpolicy/variables.tf

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+variable "resource_group_location" {
+  type        = string
+  description = "Location for all resources."
+  default     = "eastus"
+}
+
+variable "resource_group_name_prefix" {
+  type = string
+  description = "Prefix for the Resource Group Name that's combined with a random id so name is unique in your Azure subcription."  
+  default = "rg"
+}
+
+variable "firewall_sku_tier" {
+  type        = string
+  description = "Firewall SKU."
+  default     = "Premium" # Valid values are Standard and Premium
+  validation {
+    condition = contains(["Standard", "Premium"], var.firewall_sku_tier)
+    error_message = "The sku must be one of the following: Standard, Premium"
+  }
+}
+