AWS WAF quotas - AWS WAF, AWS Firewall Manager, and AWS Shield Advanced

AWS WAF quotas

Note

This is the latest version of AWS WAF. For AWS WAF Classic, see AWS WAF Classic.

AWS WAF is subject to the following quotas (formerly referred to as limits). These quotas are the same for all Regions in which AWS WAF is available. Each Region is subject to these quotas individually. The quotas are not cumulative across Regions.

AWS WAF has default quotas on the maximum number of entities you can have per account. You can request an increase in these quotas.

Resource Default quota per account per Region

Maximum number of web ACLs

100

Maximum number of rule groups

100

Maximum number of IP sets

100

Maximum number of requests per second per web ACL

25,000

Maximum number of custom request headers per web ACL or rule group

100

Maximum number of custom response headers per web ACL or rule group

100

Maximum number of custom response bodies per web ACL or rule group

50

Maximum number of token domains in a web ACL token domain list

10

The maximum requests per second (RPS) allowed for AWS WAF on CloudFront is set by CloudFront and described in the CloudFront Developer Guide.

AWS WAF has fixed quotas on the following entity settings per account per Region. These quotas can't be changed.

Resource Quota per account per Region

Maximum web ACL capacity units (WCUs) per web ACL*

5,000

Maximum WCUs per rule group

5,000

Maximum number of reference statements per rule group. In a rule group, a reference statement can reference an IP set or a regex pattern set.

50

Maximum number of reference statements per web ACL. In a web ACL, a reference statement can reference a rule group, an IP set, or a regex pattern set.

50

Maximum number of IP addresses in CIDR notation per IP set

10,000

Maximum number of rate-based rules per web ACL

10

Maximum number of rate-based rules per rule group

4

Minimum request rate that can be defined for a rate-based rule

10

Maximum number of unique IP addresses that can be rate limited per rate-based rule

10,000

Maximum number of characters in a string match statement

200

Maximum number of characters in each regex pattern

200

Maximum number of unique regex patterns per regex set

10

Maximum number of regex sets

10

Maximum size of a web request body that can be inspected for Application Load Balancer and AWS AppSync protections

8 KB

Maximum size of a web request body that can be inspected for CloudFront, API Gateway, Amazon Cognito, App Runner, and Verified Access protections**

64 KB

Maximum number of text transformations per rule statement

10

Maximum size of the custom response body content for a single custom response definition

4 KB

Maximum number of custom headers for a single custom response definition

10

Maximum number of custom headers for a single custom request definition

10

Maximum combined size of all response body content for a single rule group or a single web ACL

50 KB

*Using more than 1,500 WCUs in a web ACL incurs costs beyond the basic web ACL price. For more information, see Understanding web ACL capacity units (WCUs) in AWS WAF and AWS WAF Pricing.

**By default, the body inspection limit is set to 16 KB for CloudFront, API Gateway, Amazon Cognito, App Runner, and Verified Access resources, but you can increase this for any of these resources in your web ACL configuration, up to the listed maximum. For more information, see Managing body inspection size limits for AWS WAF.

AWS WAF has the following fixed quotas on calls per account per Region. These quotas apply to the total calls to the service through any available means, including the console, CLI, AWS CloudFormation, the REST API, and the SDKs. These quotas can't be changed.

Call type Quota per account per Region
Maximum number of calls to AssociateWebACL

One request every 2 seconds

Maximum number of calls to DisassociateWebACL

One request every 2 seconds

Maximum number of calls to GetWebACLForResource

One request per second

Maximum number of calls to ListResourcesForWebACL

One request per second

Maximum number of calls to any individual Get or List action, if no other quota is defined for it

Five requests per second

Maximum number of calls to any individual Create, Put, or Update action, if no other quota is defined for it

One request per second

AWS WAF has the following fixed quotas on calls by all accounts in a single organization in AWS Organizations. These quotas apply to the total calls to the service through any available means, including the console, CLI, AWS CloudFormation, the REST API, and the SDKs. These quotas can't be changed.

Call type Quota per organization in a single Region
Maximum number of calls by all accounts in an organization to ListResourcesForWebACL, in any single Region for the Regions US East (N. Virginia) (us-east-1), US West (Oregon) (us-west-2), or Europe (Ireland) (eu-west-1).

12 requests per second

Maximum number of calls by all accounts in an organization to ListResourcesForWebACL, in any single Region that doesn't have a different quota listed in this table.

6 requests per second