Azure Virtual WAN

Azure Virtual WAN module creates a Virtual WAN with a Virtual Hub, an Azure Firewall and an Express Route circuit with its private peering and VPN connections. An infrastructure example referenced in the Azure Cloud Adoption Framework is available here: raw.githubusercontent.com/microsoft/CloudAdoptionFramework/master/ready/enterprise-scale-architecture.pdf

This module use multiple sub-modules:

• Virtual Hub: Manage all Virtual Hub configurations
• Azure Firewall: Manage the creation of Azure Firewall in a Secured Hub
• Azure ExpressRoute: Manage ExpressRoute creation and configuration
• Azure VPN: Manage VPN connection in a Virtual Hub

Naming

Resource naming is based on the Microsoft CAF naming convention best practices. Use the parameter var.<resource>_custom_name to override names.

We rely on the forked Claranet Azure CAF naming Terraform provider to generate resources names.

Global versioning rule for Claranet Azure modules

Module version	Terraform version	OpenTofu version	AzureRM version
>= 8.x.x	Unverified	1.8.x	>= 4.0
>= 7.x.x	1.3.x		>= 3.0
>= 6.x.x	1.x		>= 3.0
>= 5.x.x	0.15.x		>= 2.0
>= 4.x.x	0.13.x / 0.14.x		>= 2.0
>= 3.x.x	0.12.x		>= 2.0
>= 2.x.x	0.12.x		< 2.0
< 2.x.x	0.11.x		< 2.0

Contributing

If you want to contribute to this repository, feel free to use our pre-commit git hook configuration which will help you automatically update and format some files for you by enforcing our Terraform code module best-practices.

More details are available in the CONTRIBUTING.md file.

Usage

This module is optimized to work with the Claranet terraform-wrapper tool which set some terraform variables in the environment needed by this module. More details about variables set by the terraform-wrapper available in the documentation.

⚠️ Since modules version v8.0.0, we do not maintain/check anymore the compatibility with Hashicorp Terraform. Instead, we recommend to use OpenTofu.

module "virtual_wan" {
  source  = "claranet/virtual-wan/azurerm"
  version = "x.x.x"

  location       = module.azure_region.location
  location_short = module.azure_region.location_short
  client_name    = var.client_name
  environment    = var.environment
  stack          = var.stack

  resource_group_name = module.rg.name

  virtual_hub_address_prefix = "10.254.0.0/23"
  peered_virtual_networks = [
    for vnet in local.vnets : {
      vnet_id                   = module.vnets[vnet.name].id
      internet_security_enabled = vnet.internet_security_enabled
    }
  ]

  firewall_enabled                      = true
  express_route_enabled                 = true
  express_route_private_peering_enabled = true
  vpn_gateway_enabled                   = true

  express_route_circuit_peering_location  = "Paris"
  express_route_circuit_bandwidth_in_mbps = 100
  express_route_circuit_service_provider  = "Equinix"

  express_route_private_peering_primary_peer_address_prefix   = "169.254.254.0/30"
  express_route_private_peering_secondary_peer_address_prefix = "169.254.254.4/30"
  express_route_private_peering_shared_key                    = "MySuperSecretSharedKey"
  express_route_private_peering_peer_asn                      = 4321
  express_route_private_peering_vlan_id                       = 1234

  vpn_gateway_instance_0_bgp_peering_address = ["169.254.21.1"]
  vpn_gateway_instance_1_bgp_peering_address = ["169.254.22.1"]

  vpn_sites = [{
    name = "site1"
    links = [
      {
        name       = "site1-primary-endpoint"
        ip_address = "20.20.20.20"
        bgp = [{
          asn             = 65530
          peering_address = "169.254.21.2"
        }]
      },
      {
        name       = "site1-secondary-endpoint"
        ip_address = "21.21.21.21"
        bgp = [{
          asn             = 65530
          peering_address = "169.254.22.2"
        }]
      },
    ]
  }]

  vpn_connections = [{
    name      = "cn-hub-to-site1"
    site_name = "site1"
    links = [
      {
        name           = "site1-primary-link"
        bandwidth_mbps = 200
        bgp_enabled    = true
        protocol       = "IKEv2"
        shared_key     = "VeryStrongSecretKeyForPrimaryLink"
        ipsec_policy = {
          dh_group                 = "DHGroup14"
          ike_encryption_algorithm = "AES256"
          ike_integrity_algorithm  = "SHA256"
          encryption_algorithm     = "AES256"
          integrity_algorithm      = "SHA256"
          pfs_group                = "PFS14"
          sa_data_size_kb          = 102400000
          sa_lifetime_sec          = 3600
        }
      },
      {
        name           = "site1-secondary-link"
        bandwidth_mbps = 200
        bgp_enabled    = true
        protocol       = "IKEv2"
        shared_key     = "VeryStrongSecretKeyForSecondaryLink"
        ipsec_policy = {
          dh_group                 = "DHGroup14"
          ike_encryption_algorithm = "AES256"
          ike_integrity_algorithm  = "SHA256"
          encryption_algorithm     = "AES256"
          integrity_algorithm      = "SHA256"
          pfs_group                = "PFS14"
          sa_data_size_kb          = 102400000
          sa_lifetime_sec          = 3600
        }
      },
    ]
  }]

  logs_destinations_ids = [
    module.run.log_analytics_workspace_id,
    module.run.logs_storage_account_id,
  ]
}

Providers

Name	Version
azurecaf	~> 1.2.29
azurerm	~> 4.0
terraform	n/a

Modules

Name	Source	Version
express_route	./modules/express-route	n/a
firewall	./modules/firewall	n/a
routing_intent	./modules/routing-intent	n/a
virtual_hub	./modules/virtual-hub	n/a
vpn	./modules/vpn	n/a

Resources

Name	Type
azurerm_virtual_wan.main	resource
terraform_data.routing_intent_precondition	resource
azurecaf_name.main	data source

Inputs

Name	Description	Type	Default	Required
azure_firewall_as_next_hop_enabled	Whether use Azure Firewall as next hop or a NVA.	bool	true	no
branch_to_branch_traffic_allowed	Boolean flag to specify whether branch to branch traffic is allowed.	bool	true	no
client_name	Client name/account used in naming.	string	n/a	yes
custom_name	Custom Virtual WAN name.	string	null	no
default_tags_enabled	Option to enabled or disable default tags	bool	true	no
environment	Project environment.	string	n/a	yes
express_route_circuit_bandwidth_in_mbps	The bandwidth in Mbps of the Express Route circuit being created on the service provider.	number	null	no
express_route_circuit_custom_name	Custom Express Route circuit name.	string	null	no
express_route_circuit_enabled	Whether or not to create the Express Route circuit.	bool	true	no
express_route_circuit_peering_location	Express Route circuit peering location.	string	null	no
express_route_circuit_service_provider	The name of the Express Route circuit service provider.	string	null	no
express_route_circuit_sku	Express Route circuit SKU.	object({ tier = string family = string })	{ "family": "MeteredData", "tier": "Premium" }	no
express_route_diagnostic_settings_custom_name	Custom name of the diagnostic settings. Defaults to default.	string	"default"	no
express_route_enabled	Enable or disable Express Route.	bool	false	no
express_route_extra_tags	Extra tags for the Express Route.	map(string)	null	no
express_route_gateway_custom_name	Custom Express Route gateway name.	string	null	no
express_route_gateway_non_virtual_wan_traffic_allowed	Whether the gateway accepts traffic from non-Virtual WAN networks.	bool	false	no
express_route_gateway_scale_unit	The number of scale units with which to provision the Express Route gateway.	number	1	no
express_route_logs_categories	Log categories to send to destinations.	list(string)	null	no
express_route_logs_destinations_ids	List of destination resources IDs for logs diagnostic destination. Can be Storage Account, Log Analytics Workspace and Event Hub. No more than one of each can be set. If you want to use Azure EventHub as a destination, you must provide a formatted string containing both the EventHub Namespace authorization send ID and the EventHub name (name of the queue to use in the Namespace) separated by the | character.	list(string)	null	no
express_route_logs_metrics_categories	Metrics categories to send to destinations.	list(string)	null	no
express_route_private_peering_enabled	Whether or not to enable private peering on the Express Route circuit.	bool	false	no
express_route_private_peering_peer_asn	Peer BGP ASN for the Express Route circuit private peering.	number	null	no
express_route_private_peering_primary_peer_address_prefix	Primary peer address prefix for the Express Route circuit private peering.	string	null	no
express_route_private_peering_secondary_peer_address_prefix	Secondary peer address prefix for the Express Route circuit private peering.	string	null	no
express_route_private_peering_shared_key	Shared secret key for the Express Route circuit private peering.	string	null	no
express_route_private_peering_vlan_id	VLAN ID for the Express Route circuit.	number	null	no
extra_tags	Map of additional tags.	map(string)	null	no
firewall_custom_name	Custom firewall name.	string	null	no
firewall_diagnostic_settings_custom_name	Custom name of the diagnostic settings. Defaults to default.	string	"default"	no
firewall_dns_servers	List of DNS servers that the firewall will redirect DNS traffic to for the name resolution.	list(string)	null	no
firewall_enabled	Enable or disable Azure Firewall in the Virtual Hub.	bool	true	no
firewall_extra_tags	Extra tags for the firewall.	map(string)	null	no
firewall_logs_categories	Log categories to send to destinations.	list(string)	null	no
firewall_logs_destinations_ids	List of destination resources IDs for logs diagnostic destination. Can be Storage Account, Log Analytics Workspace and Event Hub. No more than one of each can be set. If you want to use Azure EventHub as a destination, you must provide a formatted string containing both the EventHub Namespace authorization send ID and the EventHub name (name of the queue to use in the Namespace) separated by the | character.	list(string)	null	no
firewall_logs_metrics_categories	Metrics categories to send to destinations.	list(string)	null	no
firewall_policy	ID of the firewall policy applied to this firewall.	object({ id = string })	null	no
firewall_private_ip_ranges	List of SNAT private IP ranges, or the special string IANAPrivateRanges, which indicates the firewall does not SNAT when the destination IP address is a private range per IANA RFC 1918.	list(string)	null	no
firewall_public_ip_count	Number of public IPs to assign to the firewall.	number	1	no
firewall_sku_tier	SKU tier of the firewall. Possible values are Premium and Standard.	string	"Standard"	no
firewall_zones	Availability zones in which the firewall should be created.	list(number)	[ 1, 2, 3 ]	no
internet_routing_enabled	Whether force the internet routing through Azure Firewall or the NVA.	bool	true	no
internet_security_enabled	Define internet security parameter in both VPN connections and Virtual Hub connections.	bool	null	no
location	Azure location.	string	n/a	yes
location_short	Short string for Azure location.	string	n/a	yes
logs_destinations_ids	List of destination resources IDs for logs diagnostic destination. Can be Storage Account, Log Analytics Workspace and Event Hub. No more than one of each can be set. If you want to use Azure EventHub as a destination, you must provide a formatted string containing both the EventHub Namespace authorization send ID and the EventHub name (name of the queue to use in the Namespace) separated by the | character.	list(string)	n/a	yes
name_prefix	Prefix for generated resources names.	string	""	no
name_slug	Slug to use with generated resources names.	string	""	no
name_suffix	Suffix for generated resources names.	string	""	no
next_hop_nva_id	ID of the NVA used as next hop.	string	null	no
office365_local_breakout_category	Specifies the Office365 local breakout category. Possible values are Optimize, OptimizeAndAllow, All and None. Defaults to None.	string	"None"	no
peered_virtual_networks	List of Virtual Network objects to peer with the Virtual Hub.	list(object({ vnet_id = string peering_name = optional(string) internet_security_enabled = optional(bool, true) routing = optional(object({ associated_route_table_id = optional(string) propagated_route_table = optional(object({ labels = optional(list(string)) route_table_ids = optional(list(string)) })) static_vnet_route = optional(object({ name = optional(string) address_prefixes = optional(list(string)) next_hop_ip_address = optional(string) })) })) }))	[]	no
private_routing_enabled	Whether force the private routing through Azure Firewall or the NVA.	bool	true	no
resource_group_name	Resource Group name.	string	n/a	yes
routing_intent_custom_name	Custom routing intent name. hubRoutingIntent if not set.	string	null	no
routing_intent_enabled	Enable or disable routing intent feature in the Virtual Hub.	bool	false	no
stack	Project Stack name.	string	n/a	yes
type	Specifies the Virtual WAN type. Possible Values are Basic and Standard. Defaults to Standard.	string	"Standard"	no
virtual_hub_address_prefix	The address prefix which should be used for this Virtual Hub. Cannot be smaller than a /24. A /23 is recommended by Azure.	string	n/a	yes
virtual_hub_custom_name	Custom Virtual Hub name.	string	null	no
virtual_hub_extra_tags	Extra tags for the Virtual Hub.	map(string)	null	no
virtual_hub_routes	List of route objects. var.routes[*].next_hop_ip_address values can be azure_firewall or an IP address.	list(object({ address_prefixes = list(string) next_hop_ip_address = string }))	[]	no
virtual_hub_sku	The SKU of the Virtual Hub. Possible values are Basic and Standard.	string	"Standard"	no
virtual_wan_extra_tags	Extra tags for this Virtual WAN.	map(string)	null	no
vpn_connections	VPN connections configuration.	list(object({ name = string site_id = optional(string) site_name = optional(string) internet_security_enabled = optional(bool, false) links = list(object({ name = string egress_nat_rule_ids = optional(list(string)) ingress_nat_rule_ids = optional(list(string)) bandwidth_mbps = optional(number, 10) bgp_enabled = optional(bool, false) connection_mode = optional(string, "Default") protocol = optional(string, "IKEv2") ratelimit_enabled = optional(bool, false) route_weight = optional(number, 0) shared_key = optional(string) local_azure_ip_address_enabled = optional(bool, false) policy_based_traffic_selector_enabled = optional(bool, false) ipsec_policy = optional(object({ dh_group = string ike_encryption_algorithm = string ike_integrity_algorithm = string encryption_algorithm = string integrity_algorithm = string pfs_group = string sa_data_size_kb = number sa_lifetime_sec = number })) })) traffic_selector_policy = optional(list(object({ local_address_ranges = list(string) remote_address_ranges = list(string) })), []) }))	[]	no
vpn_encryption_enabled	Boolean flag to specify whether VPN encryption is enabled.	bool	true	no
vpn_gateway_bgp_peer_weight	The weight added to routes learned from this BGP speaker.	number	0	no
vpn_gateway_custom_name	Custom VPN gateway name.	string	null	no
vpn_gateway_diagnostic_settings_custom_name	Custom name of the diagnostic settings. Defaults to default.	string	"default"	no
vpn_gateway_enabled	Whether or not to enable the deployment of a VPN gateway and its connections.	bool	false	no
vpn_gateway_extra_tags	Extra tags for the VPN gateway.	map(string)	null	no
vpn_gateway_instance_0_bgp_peering_address	List of custom BGP IP addresses to assign to the first instance.	list(string)	[]	no
vpn_gateway_instance_1_bgp_peering_address	List of custom BGP IP addresses to assign to the second instance.	list(string)	[]	no
vpn_gateway_logs_categories	Log categories to send to destinations.	list(string)	null	no
vpn_gateway_logs_destinations_ids	List of destination resources IDs for logs diagnostic destination. Can be Storage Account, Log Analytics Workspace and Event Hub. No more than one of each can be set. If you want to use Azure EventHub as a destination, you must provide a formatted string containing both the EventHub Namespace authorization send ID and the EventHub name (name of the queue to use in the Namespace) separated by the | character.	list(string)	null	no
vpn_gateway_logs_metrics_categories	Metrics categories to send to destinations.	list(string)	null	no
vpn_gateway_routing_preference	Azure routing preference. You can choose to route traffic either via the Microsoft network (set to Microsoft network) or via the ISP network (set to Internet).	string	"Microsoft Network"	no
vpn_gateway_scale_unit	The scale unit for this VPN gateway.	number	1	no
vpn_sites	VPN sites configuration.	list(object({ name = string cidrs = optional(list(string)) device_model = optional(string) device_vendor = optional(string) links = list(object({ name = string fqdn = optional(string) ip_address = optional(string) provider_name = optional(string) speed_in_mbps = optional(number) bgp = optional(list(object({ asn = string peering_address = string })), []) })) }))	[]	no

Outputs

Name	Description
express_route_circuit_id	ID of the Express Route circuit.
express_route_circuit_name	Name of the Express Route circuit.
express_route_circuit_service_key	The string needed by the service provider to provision the Express Route circuit.
express_route_circuit_service_provider_provisioning_state	The Express Route circuit provisioning state from your chosen service provider.
express_route_gateway_id	ID of the Express Route gateway.
express_route_gateway_name	Name of the Express Route gateway.
express_route_private_peering_azure_asn	Autonomous System Number used by Azure for BGP peering.
firewall_id	ID of the firewall.
firewall_ip_configuration	IP configuration of the firewall.
firewall_management_ip_configuration	Management IP configuration of the firewall.
firewall_name	Name of the firewall.
firewall_private_ip_address	Private IP address of the firewall.
firewall_public_ip_addresses	Public IP addresses of the firewall.
id	ID of the Virtual WAN.
module_express_route	Express Route module outputs.
module_firewall	Firewall module outputs.
module_routing_intent	Routing intent module outputs.
module_virtual_hub	Virtual Hub module outputs.
module_vpn	VPN module outputs.
name	Name of the Virtual WAN.
resource	Virtual WAN resource object.
routing_intent_id	ID of the routing intent.
routing_intent_name	Name of the routing intent.
terraform_module	Information about this Terraform module.
virtual_hub_default_route_table_id	ID of the default route table associated with the Virtual Hub.
virtual_hub_id	ID of the Virtual Hub.
virtual_hub_name	Name of the Virtual Hub.
vpn_gateway_bgp_settings	BGP settings of the VPN gateway.
vpn_gateway_connections_ids	Map of VPN gateway connections (name => ID).
vpn_gateway_id	ID of the VPN gateway.
vpn_gateway_name	Name of the VPN gateway.

Related documentation

• Azure Virtual WAN: learn.microsoft.com/en-us/azure/virtual-wan/virtual-wan-about
• Azure Firewall: learn.microsoft.com/en-us/azure/firewall/overview
• Azure Express Route circuit: learn.microsoft.com/en-us/azure/expressroute/expressroute-circuit-peerings