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Merge pull request #252 from cshea-msft/chashea-patch-03
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Creating AzureFirewall with AV Zones quickstart
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stemaMSFT authored Oct 17, 2023
2 parents ec82d41 + 3a91285 commit 7179c30
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264 changes: 264 additions & 0 deletions quickstart/201-azfw-with-avzones/main.tf
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resource "random_pet" "rg_name" {
prefix = var.resource_group_name_prefix
}

resource "random_string" "storage_account_name" {
length = 8
lower = true
numeric = false
special = false
upper = false
}

resource "random_password" "password" {
length = 20
min_lower = 1
min_upper = 1
min_numeric = 1
min_special = 1
special = true
}

resource "azurerm_resource_group" "rg" {
name = random_pet.rg_name.id
location = var.resource_group_location
}

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"
zones = ["1", "2", "3"]
}

resource "azurerm_storage_account" "sa" {
name = random_string.storage_account_name.result
resource_group_name = azurerm_resource_group.rg.name
location = azurerm_resource_group.rg.location
account_tier = "Standard"
account_replication_type = "LRS"
account_kind = "StorageV2"
}

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 = ["10.10.0.0/16"]
}

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_subnet" "server_subnet" {
name = "subnet-server"
resource_group_name = azurerm_resource_group.rg.name
virtual_network_name = azurerm_virtual_network.azfw_vnet.name
address_prefixes = ["10.10.1.0/24"]
}

resource "azurerm_subnet" "jump_subnet" {
name = "subnet-jump"
resource_group_name = azurerm_resource_group.rg.name
virtual_network_name = azurerm_virtual_network.azfw_vnet.name
address_prefixes = ["10.10.2.0/24"]
}

resource "azurerm_public_ip" "vm_jump_pip" {
name = "pip-jump"
location = azurerm_resource_group.rg.location
resource_group_name = azurerm_resource_group.rg.name
allocation_method = "Static"
sku = "Standard"
}

resource "azurerm_network_interface" "vm_server_nic" {
name = "nic-server"
location = azurerm_resource_group.rg.location
resource_group_name = azurerm_resource_group.rg.name

ip_configuration {
name = "ipconfig-workload"
subnet_id = azurerm_subnet.server_subnet.id
private_ip_address_allocation = "Dynamic"
}
}

resource "azurerm_network_interface" "vm_jump_nic" {
name = "nic-jump"
location = azurerm_resource_group.rg.location
resource_group_name = azurerm_resource_group.rg.name

ip_configuration {
name = "ipconfig-jump"
subnet_id = azurerm_subnet.jump_subnet.id
private_ip_address_allocation = "Dynamic"
public_ip_address_id = azurerm_public_ip.vm_jump_pip.id
}
}

resource "azurerm_network_security_group" "vm_server_nsg" {
name = "nsg-server"
location = azurerm_resource_group.rg.location
resource_group_name = azurerm_resource_group.rg.name
}

resource "azurerm_network_security_group" "vm_jump_nsg" {
name = "nsg-jump"
location = azurerm_resource_group.rg.location
resource_group_name = azurerm_resource_group.rg.name
security_rule {
name = "Allow-TCP"
priority = 1000
direction = "Inbound"
access = "Allow"
protocol = "Tcp"
source_port_range = "*"
destination_port_range = "3389"
source_address_prefix = "*"
destination_address_prefix = "*"
}
}

resource "azurerm_network_interface_security_group_association" "vm_server_nsg_association" {
network_interface_id = azurerm_network_interface.vm_server_nic.id
network_security_group_id = azurerm_network_security_group.vm_server_nsg.id
}

resource "azurerm_network_interface_security_group_association" "vm_jump_nsg_association" {
network_interface_id = azurerm_network_interface.vm_jump_nic.id
network_security_group_id = azurerm_network_security_group.vm_jump_nsg.id
}

resource "azurerm_windows_virtual_machine" "vm_server" {
name = "server-vm"
resource_group_name = azurerm_resource_group.rg.name
location = azurerm_resource_group.rg.location
computer_name = "server"
size = var.virtual_machine_size
admin_username = var.admin_username
admin_password = random_password.password.result
network_interface_ids = [azurerm_network_interface.vm_server_nic.id]
os_disk {
caching = "ReadWrite"
storage_account_type = "Standard_LRS"
disk_size_gb = "128"
}
source_image_reference {
publisher = "MicrosoftWindowsServer"
offer = "WindowsServer"
sku = "2019-Datacenter"
version = "latest"
}
boot_diagnostics {
storage_account_uri = azurerm_storage_account.sa.primary_blob_endpoint
}
}

resource "azurerm_windows_virtual_machine" "vm_jump" {
name = "jump-vm"
resource_group_name = azurerm_resource_group.rg.name
location = azurerm_resource_group.rg.location
computer_name = "jumpbox"
size = var.virtual_machine_size
admin_username = var.admin_username
admin_password = random_password.password.result
network_interface_ids = [azurerm_network_interface.vm_jump_nic.id]
os_disk {
caching = "ReadWrite"
storage_account_type = "Standard_LRS"
disk_size_gb = "128"
}
source_image_reference {
publisher = "MicrosoftWindowsServer"
offer = "WindowsServer"
sku = "2019-Datacenter"
version = "latest"
}
boot_diagnostics {
storage_account_uri = azurerm_storage_account.sa.primary_blob_endpoint
}
}

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" "prcg" {
name = "prcg"
firewall_policy_id = azurerm_firewall_policy.azfw_policy.id
priority = 300
application_rule_collection {
name = "appRc1"
priority = 101
action = "Allow"
rule {
name = "appRule1"
protocols {
type = "Http"
port = 80
}
protocols {
type = "Https"
port = 443
}
destination_fqdns = ["www.microsoft.com"]
source_addresses = ["10.10.1.0/24"]
}
}
network_rule_collection {
name = "netRc1"
priority = 200
action = "Allow"
rule {
name = "netRule1"
protocols = ["TCP"]
source_addresses = ["10.10.1.0/24"]
destination_addresses = ["*"]
destination_ports = ["8000", "8999"]
}
}
}

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
zones = ["1", "2", "3"]
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
}

resource "azurerm_route_table" "rt" {
name = "rt-azfw-eus"
location = azurerm_resource_group.rg.location
resource_group_name = azurerm_resource_group.rg.name
disable_bgp_route_propagation = false
route {
name = "azfwDefaultRoute"
address_prefix = "0.0.0.0/0"
next_hop_type = "VirtualAppliance"
next_hop_in_ip_address = azurerm_firewall.fw.ip_configuration[0].private_ip_address
}
}

resource "azurerm_subnet_route_table_association" "jump_subnet_rt_association" {
subnet_id = azurerm_subnet.server_subnet.id
route_table_id = azurerm_route_table.rt.id
}
7 changes: 7 additions & 0 deletions quickstart/201-azfw-with-avzones/outputs.tf
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output "resource_group_name" {
value = azurerm_resource_group.rg.name
}

output "firewall_name" {
value = azurerm_firewall.fw.name
}
16 changes: 16 additions & 0 deletions quickstart/201-azfw-with-avzones/providers.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 {}
}
41 changes: 41 additions & 0 deletions quickstart/201-azfw-with-avzones/readme.md
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# Deploying Azure Firewall in Availability Zones

This template deploys a test network environment with [Azure Firewall](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/firewall) in Availability Zones. The network has one virtual network (VNet) with three subnets: AzureFirewallSubnet, server_subnet, and jump_subnet. The server-subnet and jump-subnet subnet each have a single, two-core Windows Server virtual machine.

The firewall is in the AzureFirewallSubnet subnet, and has an application rule collection with a single rule that allows access to www.microsoft.com.

A user-defined route points network traffic from the server-subnet through the firewall, where the firewall rules are applied.



## 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_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)
- [azurerm_network_interface](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/network_interface)
- [azurerm_network_security_group](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/network_security_group)
- [azurerm_network_interface_security_group_association](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/network_interface_security_group_association)
- [azurerm_route_table](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/route_table)
- [azurerm_subnet_route_table_association](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/subnet_route_table_association)
- [azurerm_windows_virtual_machine](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/windows_virtual_machine)
- [azurerm_storage_account](https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/storage_account)
- [random_password](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/password)
- [random_pet](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/pet)
- [random_string](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/string)

## Variables

| Name | Description | Default value |
|-|-|-|
| `resource_group_location` | Location of the resource group | eastus |
| `firewall_sku_tier` | SKU size for your Firewall and Firewall Policy. Possible values: Standard, Premium | Premium |
| `resource_group_name_prefix` | Prefix of the resource group name that's combined with a random ID so that name is unique in your Azure subscription. | rg |
| `virtual_machine_size` | SKU size for your jump and workload VMs | Standard_D2_v3 |
| `admin_username` | The admin username for the jump and workload VMs | azureuser |

## Example
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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"
}
}

variable "virtual_machine_size" {
type = string
description = "Size of the virtual machine."
default = "Standard_D2_v3"
}

variable "admin_username" {
type = string
description = "Value of the admin username."
default = "azureuser"
}

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