Method: securityPolicies.getRule

Gets a rule at the specified priority.

HTTP request

GET https://compute.googleapis.com/compute/beta/projects/{project}/global/securityPolicies/{resourceId}/getRule

The URL uses gRPC Transcoding syntax.

Path parameters

Parameters
project

string

Project ID for this request.

resourceId

string

Name of the security policy to which the queried rule belongs.

Query parameters

Parameters
priority

integer

The priority of the rule to get from the security policy.

Request body

The request body must be empty.

Response body

If successful, the response body contains data with the following structure:

Represents a rule that describes one or more match conditions along with the action to be taken when traffic matches this condition (allow or deny).

JSON representation
{
  "description": string,
  "priority": integer,
  "match": {
    "expr": {
      "expression": string,
      "title": string,
      "description": string,
      "location": string
    },
    "versionedExpr": enum,
    "config": {
      "srcIpRanges": [
        string
      ],
      "destIpRanges": [
        string
      ],
      "layer4Configs": [
        {
          "ipProtocol": string,
          "ports": [
            string
          ]
        }
      ]
    }
  },
  "action": string,
  "preview": boolean,
  "direction": enum,
  "targetResources": [
    string
  ],
  "enableLogging": boolean,
  "ruleTupleCount": integer,
  "rateLimitOptions": {
    "rateLimitThreshold": {
      "count": integer,
      "intervalSec": integer
    },
    "conformAction": string,
    "exceedAction": string,
    "enforceOnKey": enum,
    "banThreshold": {
      "count": integer,
      "intervalSec": integer
    },
    "banDurationSec": integer
  },
  "targetServiceAccounts": [
    string
  ],
  "ruleNumber": string,
  "headerAction": {
    "requestHeadersToAdds": [
      {
        "headerName": string,
        "headerValue": string
      }
    ]
  },
  "redirectOptions": {
    "type": enum,
    "target": string
  },
  "kind": string
}
Fields
description

string

An optional description of this resource. Provide this property when you create the resource.

priority

integer

An integer indicating the priority of a rule in the list. The priority must be a positive value between 0 and 2147483647. Rules are evaluated from highest to lowest priority where 0 is the highest priority and 2147483647 is the lowest priority.

match

object

A match condition that incoming traffic is evaluated against. If it evaluates to true, the corresponding 'action' is enforced.

match.expr

object

User defined CEVAL expression. A CEVAL expression is used to specify match criteria such as origin.ip, source.region_code and contents in the request header.

match.expr.expression

string

Textual representation of an expression in Common Expression Language syntax.

match.expr.title

string

Optional. Title for the expression, i.e. a short string describing its purpose. This can be used e.g. in UIs which allow to enter the expression.

match.expr.description

string

Optional. Description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI.

match.expr.location

string

Optional. String indicating the location of the expression for error reporting, e.g. a file name and a position in the file.

match.versionedExpr

enum

Preconfigured versioned expression. If this field is specified, config must also be specified. Available preconfigured expressions along with their requirements are: SRC_IPS_V1 - must specify the corresponding srcIpRange field in config.

match.config

object

The configuration options available when specifying versionedExpr. This field must be specified if versionedExpr is specified and cannot be specified if versionedExpr is not specified.

match.config.srcIpRanges[]

string

CIDR IP address range. Maximum number of src_ip_ranges allowed is 10.

match.config.destIpRanges[]

string

CIDR IP address range.

This field may only be specified when versionedExpr is set to FIREWALL.

match.config.layer4Configs[]

object

Pairs of IP protocols and ports that the rule should match.

This field may only be specified when versionedExpr is set to FIREWALL.

match.config.layer4Configs[].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, ipip, sctp), or the IP protocol number.

match.config.layer4Configs[].ports[]

string

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"].

This field may only be specified when versionedExpr is set to FIREWALL.

action

string

The Action to perform when the client connection triggers the rule. Can currently be either "allow" or "deny()" where valid values for status are 403, 404, and 502.

preview

boolean

If set to true, the specified action is not enforced.

direction

enum

The direction in which this rule applies. This field may only be specified when versionedExpr is set to FIREWALL.

targetResources[]

string

A list of network resource URLs to which this rule applies. This field allows you to control which network's VMs get this rule. If this field is left blank, all VMs within the organization will receive the rule.

This field may only be specified when versionedExpr is set to FIREWALL.

enableLogging

boolean

Denotes whether to enable logging for a particular rule. If logging is enabled, logs will be exported to the configured export destination in Stackdriver. Logs may be exported to BigQuery or Pub/Sub. Note: you cannot enable logging on "goto_next" rules.

This field may only be specified when the versionedExpr is set to FIREWALL.

ruleTupleCount

integer

[Output Only] Calculation of the complexity of a single firewall security policy rule.

rateLimitOptions

object

Must be specified if the action is "rate_based_ban" or "throttle". Cannot be specified for any other actions.

rateLimitOptions.rateLimitThreshold

object

Threshold at which to begin ratelimiting.

rateLimitOptions.rateLimitThreshold.count

integer

Number of HTTP(S) requests for calculating the threshold.

rateLimitOptions.rateLimitThreshold.intervalSec

integer

Interval over which the threshold is computed.

rateLimitOptions.conformAction

string

Action to take for requests that are under the configured rate limit threshold. Valid option is "allow" only.

rateLimitOptions.exceedAction

string

When a request is denied, returns the HTTP response code specified. Valid options are "deny()" where valid values for status are 403, 404, 429, and 502.

rateLimitOptions.enforceOnKey

enum

Determines the key to enforce the rateLimitThreshold on. Possible values are: "ALL" -- A single rate limit threshold is applied to all the requests matching this rule. This is the default value if this field 'enforceOnKey' is not configured. "ALL_IPS" -- This definition, equivalent to "ALL", has been depprecated. "IP" -- The source IP address of the request is the key. Each IP has this limit enforced separately. "HTTP_HEADER" -- The value of the HTTP Header whose name is configured under "enforce_on_key_name". The key value is truncated to the first 128 bytes of the Header value. If no such header is present in the request, the key type defaults to "ALL". "XFF_IP" -- The first IP address (i.e. the originating client IP address) specified in the list of IPs under X-Forwarded-For HTTP Header. If no such header is present or the value is not a valid IP, the key type defaults to "ALL".

rateLimitOptions.banThreshold

object

Can only be specified if the action for the rule is "rate_based_ban". If specified, the key will be banned for the configured 'banDurationSec' when the number of requests that exceed the 'rateLimitThreshold' also exceed this 'banThreshold'.

rateLimitOptions.banThreshold.count

integer

Number of HTTP(S) requests for calculating the threshold.

rateLimitOptions.banThreshold.intervalSec

integer

Interval over which the threshold is computed.

rateLimitOptions.banDurationSec

integer

Can only be specified if the action for the rule is "rate_based_ban". If specified, determines the time (in seconds) the traffic will continue to be banned by the rate limit after the rate falls below the threshold.

targetServiceAccounts[]

string

A list of service accounts indicating the sets of instances that are applied with this rule.

ruleNumber

string (int64 format)

Identifier for the rule. This is only unique within the given security policy. This can only be set during rule creation, if rule number is not specified it will be generated by the server.

headerAction

object

Optional, additional actions that are performed on headers.

headerAction.requestHeadersToAdds[]

object

The list of request headers to add or overwrite if they're already present.

headerAction.requestHeadersToAdds[].headerName

string

The name of the header to set.

headerAction.requestHeadersToAdds[].headerValue

string

The value to set the named header to.

redirectOptions

object

Parameters defining the redirect action. Cannot be specified for any other actions.

redirectOptions.type

enum

Type of the redirect action.

redirectOptions.target

string

Target for the redirect action. This is required if the type is EXTERNAL_302 and cannot be specified for GOOGLE_RECAPTCHA.

kind

string

[Output only] Type of the resource. Always compute#securityPolicyRule for security policy rules

Authorization Scopes

Requires one of the following OAuth scopes:

  • https://www.googleapis.com/auth/compute
  • https://www.googleapis.com/auth/cloud-platform

For more information, see the Authentication Overview.

IAM Permissions

In addition to any permissions specified on the fields above, authorization requires one or more of the following IAM permissions:

  • compute.securityPolicies.get

To find predefined roles that contain those permissions, see Compute Engine IAM Roles.