» google_compute_firewall

Each network has its own firewall controlling access to and from the instances.

All traffic to instances, even from other instances, is blocked by the firewall unless firewall rules are created to allow it.

The default network has automatically created firewall rules that are shown in default firewall rules. No manually created network has automatically created firewall rules except for a default "allow" rule for outgoing traffic and a default "deny" for incoming traffic. For all networks except the default network, you must create any firewall rules you need.

To get more information about Firewall, see:

Open in Cloud Shell

» Example Usage - Firewall Basic 

resource "google_compute_firewall" "default" {
  name    = "test-firewall"
  network = "${google_compute_network.default.name}"

  allow {
    protocol = "icmp"
  }

  allow {
    protocol = "tcp"
    ports    = ["80", "8080", "1000-2000"]
  }

  source_tags = ["web"]
}

resource "google_compute_network" "default" {
  name = "test-network"
}

» Argument Reference

The following arguments are supported:

  • name - (Required) Name of the resource. Provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.

  • network - (Required) The name or self_link of the network to attach this firewall to.

  • allow - (Optional) The list of ALLOW rules specified by this firewall. Each rule specifies a protocol and port-range tuple that describes a permitted connection. Structure is documented below.

  • deny - (Optional) The list of DENY rules specified by this firewall. Each rule specifies a protocol and port-range tuple that describes a denied connection. Structure is documented below.

  • description - (Optional) An optional description of this resource. Provide this property when you create the resource.

  • destination_ranges - (Optional) If destination ranges are specified, the firewall will apply only to traffic that has destination IP address in these ranges. These ranges must be expressed in CIDR format. Only IPv4 is supported.

  • direction - (Optional) Direction of traffic to which this firewall applies; default is INGRESS. Note: For INGRESS traffic, it is NOT supported to specify destinationRanges; For EGRESS traffic, it is NOT supported to specify sourceRanges OR sourceTags.

  • disabled - (Optional) Denotes whether the firewall rule is disabled, i.e not applied to the network it is associated with. When set to true, the firewall rule is not enforced and the network behaves as if it did not exist. If this is unspecified, the firewall rule will be enabled.

  • priority - (Optional) Priority for this rule. This is an integer between 0 and 65535, both inclusive. When not specified, the value assumed is 1000. Relative priorities determine precedence of conflicting rules. Lower value of priority implies higher precedence (eg, a rule with priority 0 has higher precedence than a rule with priority 1). DENY rules take precedence over ALLOW rules having equal priority.

  • source_ranges - (Optional) If source ranges are specified, the firewall will apply only to traffic that has source IP address in these ranges. These ranges must be expressed in CIDR format. One or both of sourceRanges and sourceTags may be set. If both properties are set, the firewall will apply to traffic that has source IP address within sourceRanges OR the source IP that belongs to a tag listed in the sourceTags property. The connection does not need to match both properties for the firewall to apply. Only IPv4 is supported.

  • source_service_accounts - (Optional) If source service accounts are specified, the firewall will apply only to traffic originating from an instance with a service account in this list. Source service accounts cannot be used to control traffic to an instance's external IP address because service accounts are associated with an instance, not an IP address. sourceRanges can be set at the same time as sourceServiceAccounts. If both are set, the firewall will apply to traffic that has source IP address within sourceRanges OR the source IP belongs to an instance with service account listed in sourceServiceAccount. The connection does not need to match both properties for the firewall to apply. sourceServiceAccounts cannot be used at the same time as sourceTags or targetTags.

  • source_tags - (Optional) If source tags are specified, the firewall will apply only to traffic with source IP that belongs to a tag listed in source tags. Source tags cannot be used to control traffic to an instance's external IP address. Because tags are associated with an instance, not an IP address. One or both of sourceRanges and sourceTags may be set. If both properties are set, the firewall will apply to traffic that has source IP address within sourceRanges OR the source IP that belongs to a tag listed in the sourceTags property. The connection does not need to match both properties for the firewall to apply.

  • target_service_accounts - (Optional) A list of service accounts indicating sets of instances located in the network that may make network connections as specified in allowed[]. targetServiceAccounts cannot be used at the same time as targetTags or sourceTags. If neither targetServiceAccounts nor targetTags are specified, the firewall rule applies to all instances on the specified network.

  • target_tags - (Optional) A list of instance tags indicating sets of instances located in the network that may make network connections as specified in allowed[]. If no targetTags are specified, the firewall rule applies to all instances on the specified network.

  • project - (Optional) The ID of the project in which the resource belongs. If it is not provided, the provider project is used.

The allow block supports:

  • protocol - (Required) The IP protocol to which this rule applies. The protocol type is required when creating a firewall rule. This value can either be one of the following well known protocol strings (tcp, udp, icmp, esp, ah, sctp), or the IP protocol number.

  • ports - (Optional) An optional list of ports to which this rule applies. This field is only applicable for UDP or TCP protocol. Each entry must be either an integer or a range. If not specified, this rule applies to connections through any port. Example inputs include: ["22"], ["80","443"], and ["12345-12349"].

The deny block supports:

  • protocol - (Required) The IP protocol to which this rule applies. The protocol type is required when creating a firewall rule. This value can either be one of the following well known protocol strings (tcp, udp, icmp, esp, ah, sctp), or the IP protocol number.

  • ports - (Optional) An optional list of ports to which this rule applies. This field is only applicable for UDP or TCP protocol. Each entry must be either an integer or a range. If not specified, this rule applies to connections through any port. Example inputs include: ["22"], ["80","443"], and ["12345-12349"].

» Attributes Reference

In addition to the arguments listed above, the following computed attributes are exported:

» Timeouts

This resource provides the following Timeouts configuration options:

  • create - Default is 4 minutes.
  • update - Default is 4 minutes.
  • delete - Default is 4 minutes.

» Import

Firewall can be imported using any of these accepted formats:

$ terraform import google_compute_firewall.default projects/{{project}}/global/firewalls/{{name}}
$ terraform import google_compute_firewall.default {{project}}/{{name}}
$ terraform import google_compute_firewall.default {{name}}