Firewalls

Represents a Firewall resource. See Firewalls documentation for more information.

For a list of methods for this resource, see the end of this page.

Resource representations

Represents a Firewall resource.

{
  "kind": "compute#firewall",
  "id": unsigned long,
  "creationTimestamp": string,
  "name": string,
  "description": string,
  "network": string,
  "priority": integer,
  "sourceRanges": [
    string
  ],
  "destinationRanges": [
    string
  ],
  "sourceTags": [
    string
  ],
  "targetTags": [
    string
  ],
  "sourceServiceAccounts": [
    string
  ],
  "targetServiceAccounts": [
    string
  ],
  "allowed": [
    {
      "IPProtocol": string,
      "ports": [
        string
      ]
    }
  ],
  "denied": [
    {
      "IPProtocol": string,
      "ports": [
        string
      ]
    }
  ],
  "direction": string,
  "selfLink": string
}
Property name Value Description Notes
allowed[] list The list of ALLOW rules specified by this firewall. Each rule specifies a protocol and port-range tuple that describes a permitted connection.
allowed[].IPProtocol string 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.
allowed[].ports[] list 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"].
creationTimestamp string [Output Only] Creation timestamp in RFC3339 text format.
denied[] list The list of DENY rules specified by this firewall. Each rule specifies a protocol and port-range tuple that describes a permitted connection.
denied[].IPProtocol string 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.
denied[].ports[] list 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"].
description string An optional description of this resource. Provide this property when you create the resource.
destinationRanges[] list 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 string 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.
id unsigned long [Output Only] The unique identifier for the resource. This identifier is defined by the server.
kind string [Output Only] Type of the resource. Always compute#firewall for firewall rules.
name string 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 string URL of the network resource for this firewall rule. If not specified when creating a firewall rule, the default network is used:
global/networks/default
If you choose to specify this property, you can specify the network as a full or partial URL. For example, the following are all valid URLs:
  • https://www.googleapis.com/compute/v1/projects/myproject/global/networks/my-network
  • projects/myproject/global/networks/my-network
  • global/networks/default
priority integer 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.
sourceRanges[] list 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.

sourceServiceAccounts[] list 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.
sourceTags[] list If source tags are specified, the firewall rule applies only to traffic with source IPs that match the primary network interfaces of VM instances that have the tag and are in the same VPC network. Source tags cannot be used to control traffic to an instance's external IP address, it only applies to traffic between instances in the same virtual network. Because tags are associated with instances, not IP addresses. 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.
targetServiceAccounts[] list 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.
targetTags[] list A list of tags that controls which instances the firewall rule applies to. If targetTags are specified, then the firewall rule applies only to instances in the VPC network that have one of those tags. If no targetTags are specified, the firewall rule applies to all instances on the specified network.

Methods

The following are valid Firewall resource methods:

delete
Deletes the specified firewall.
get
Returns the specified firewall.
insert
Creates a firewall rule in the specified project using the data included in the request.
list
Retrieves the list of firewall rules available to the specified project.
patch
Updates the specified firewall rule with the data included in the request. This method supports PATCH semantics and uses the JSON merge patch format and processing rules.
testIamPermissions
Returns permissions that a caller has on the specified resource.
update
Updates the specified firewall rule with the data included in the request. Using PUT method, can only update following fields of firewall rule: allowed, description, sourceRanges, sourceTags, targetTags.

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