update-web-acl
Description
Note
This is AWS WAF Classic documentation. For more information, see AWS WAF Classic in the developer guide.
Inserts or deletes ActivatedRule objects in a WebACL . Each Rule identifies web requests that you want to allow, block, or count. When you update a WebACL , you specify the following values:
- A default action for the
WebACL, eitherALLOWorBLOCK. AWS WAF performs the default action if a request doesn’t match the criteria in any of theRulesin aWebACL. - The
Rulesthat you want to add or delete. If you want to replace oneRulewith another, you delete the existingRuleand add the new one. - For each
Rule, whether you want AWS WAF to allow requests, block requests, or count requests that match the conditions in theRule. - The order in which you want AWS WAF to evaluate the
Rulesin aWebACL. If you add more than oneRuleto aWebACL, AWS WAF evaluates each request against theRulesin order based on the value ofPriority. (TheRulethat has the lowest value forPriorityis evaluated first.) When a web request matches all the predicates (such asByteMatchSetsandIPSets) in aRule, AWS WAF immediately takes the corresponding action, allow or block, and doesn’t evaluate the request against the remainingRulesin theWebACL, if any.
To create and configure a WebACL , perform the following steps:
- Create and update the predicates that you want to include in
Rules. For more information, see CreateByteMatchSet , UpdateByteMatchSet , CreateIPSet , UpdateIPSet , CreateSqlInjectionMatchSet , and UpdateSqlInjectionMatchSet . - Create and update the
Rulesthat you want to include in theWebACL. For more information, see CreateRule and UpdateRule . - Create a
WebACL. See CreateWebACL . - Use
GetChangeTokento get the change token that you provide in theChangeTokenparameter of an UpdateWebACL request. - Submit an
UpdateWebACLrequest to specify theRulesthat you want to include in theWebACL, to specify the default action, and to associate theWebACLwith a CloudFront distribution. TheActivatedRulecan be a rule group. If you specify a rule group as yourActivatedRule, you can exclude specific rules from that rule group. If you already have a rule group associated with a web ACL and want to submit anUpdateWebACLrequest to exclude certain rules from that rule group, you must first remove the rule group from the web ACL, the re-insert it again, specifying the excluded rules. For details, see ActivatedRule$ExcludedRules .
Be aware that if you try to add a RATE_BASED rule to a web ACL without setting the rule type when first creating the rule, the UpdateWebACL request will fail because the request tries to add a REGULAR rule (the default rule type) with the specified ID, which does not exist.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide .
See also: AWS API Documentation
Synopsis
update-web-acl
--web-acl-id <value>
--change-token <value>
[--updates <value>]
[--default-action <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]
Options
--web-acl-id (string)
WebACLId of the WebACL that you want to update. WebACLId is returned by CreateWebACL and by ListWebACLs .--change-token (string)
--updates (list)
An array of updates to make to the WebACL .
An array of WebACLUpdate objects that you want to insert into or delete from a WebACL . For more information, see the applicable data types:
- WebACLUpdate : Contains
ActionandActivatedRule - ActivatedRule : Contains
Action,OverrideAction,Priority,RuleId, andType.ActivatedRule|OverrideActionapplies only when updating or adding aRuleGroupto aWebACL. In this case, you do not useActivatedRule|Action. For all other update requests,ActivatedRule|Actionis used instead ofActivatedRule|OverrideAction. - WafAction : Contains
Type
(structure)
Note
This is AWS WAF Classic documentation. For more information, see AWS WAF Classic in the developer guide.
Specifies whether to insert a Rule into or delete a Rule from a WebACL .
Action -> (string)
Rule into or delete a Rule from a WebACL .ActivatedRule -> (structure)
The ActivatedRule object in an UpdateWebACL request specifies a Rule that you want to insert or delete, the priority of the Rule in the WebACL , and the action that you want AWS WAF to take when a web request matches the Rule (ALLOW , BLOCK , or COUNT ).
Priority -> (integer)
Rules in a WebACL are evaluated. Rules with a lower value for Priority are evaluated before Rules with a higher value. The value must be a unique integer. If you add multiple Rules to a WebACL , the values don’t need to be consecutive.RuleId -> (string)
The RuleId for a Rule . You use RuleId to get more information about a Rule (see GetRule ), update a Rule (see UpdateRule ), insert a Rule into a WebACL or delete a one from a WebACL (see UpdateWebACL ), or delete a Rule from AWS WAF (see DeleteRule ).
RuleId is returned by CreateRule and by ListRules .Action -> (structure)
Specifies the action that CloudFront or AWS WAF takes when a web request matches the conditions in the Rule . Valid values for Action include the following:
-
ALLOW: CloudFront responds with the requested object. -
BLOCK: CloudFront responds with an HTTP 403 (Forbidden) status code. -
COUNT: AWS WAF increments a counter of requests that match the conditions in the rule and then continues to inspect the web request based on the remaining rules in the web ACL.
ActivatedRule|OverrideAction applies only when updating or adding a RuleGroup to a WebACL . In this case, you do not use ActivatedRule|Action . For all other update requests, ActivatedRule|Action is used instead of ActivatedRule|OverrideAction .Type -> (string)
Specifies how you want AWS WAF to respond to requests that match the settings in a Rule . Valid settings include the following:
-
ALLOW: AWS WAF allows requests -
BLOCK: AWS WAF blocks requests -
COUNT: AWS WAF increments a counter of the requests that match all of the conditions in the rule. AWS WAF then continues to inspect the web request based on the remaining rules in the web ACL. You can’t specifyCOUNTfor the default action for aWebACL.
OverrideAction -> (structure)
Use the OverrideAction to test your RuleGroup .
Any rule in a RuleGroup can potentially block a request. If you set the OverrideAction to None , the RuleGroup will block a request if any individual rule in the RuleGroup matches the request and is configured to block that request. However if you first want to test the RuleGroup , set the OverrideAction to Count . The RuleGroup will then override any block action specified by individual rules contained within the group. Instead of blocking matching requests, those requests will be counted. You can view a record of counted requests using GetSampledRequests .
ActivatedRule|OverrideAction applies only when updating or adding a RuleGroup to a WebACL . In this case you do not use ActivatedRule|Action . For all other update requests, ActivatedRule|Action is used instead of ActivatedRule|OverrideAction .Type -> (string)
COUNT overrides the action specified by the individual rule within a RuleGroup . If set to NONE , the rule’s action will take place.Type -> (string)
REGULAR , as defined by Rule , RATE_BASED , as defined by RateBasedRule , or GROUP , as defined by RuleGroup . The default is REGULAR. Although this field is optional, be aware that if you try to add a RATE_BASED rule to a web ACL without setting the type, the UpdateWebACL request will fail because the request tries to add a REGULAR rule with the specified ID, which does not exist.ExcludedRules -> (list)
An array of rules to exclude from a rule group. This is applicable only when the ActivatedRule refers to a RuleGroup .
Sometimes it is necessary to troubleshoot rule groups that are blocking traffic unexpectedly (false positives). One troubleshooting technique is to identify the specific rule within the rule group that is blocking the legitimate traffic and then disable (exclude) that particular rule. You can exclude rules from both your own rule groups and AWS Marketplace rule groups that have been associated with a web ACL.
Specifying ExcludedRules does not remove those rules from the rule group. Rather, it changes the action for the rules to COUNT . Therefore, requests that match an ExcludedRule are counted but not blocked. The RuleGroup owner will receive COUNT metrics for each ExcludedRule .
If you want to exclude rules from a rule group that is already associated with a web ACL, perform the following steps:
- Use the AWS WAF logs to identify the IDs of the rules that you want to exclude. For more information about the logs, see Logging Web ACL Traffic Information .
- Submit an UpdateWebACL request that has two actions:
- The first action deletes the existing rule group from the web ACL. That is, in the UpdateWebACL request, the first
Updates:Actionshould beDELETEandUpdates:ActivatedRule:RuleIdshould be the rule group that contains the rules that you want to exclude. - The second action inserts the same rule group back in, but specifying the rules to exclude. That is, the second
Updates:Actionshould beINSERT,Updates:ActivatedRule:RuleIdshould be the rule group that you just removed, andExcludedRulesshould contain the rules that you want to exclude.
- The first action deletes the existing rule group from the web ACL. That is, in the UpdateWebACL request, the first
(structure)
Note
This is AWS WAF Classic documentation. For more information, see AWS WAF Classic in the developer guide.
The rule to exclude from a rule group. This is applicable only when the ActivatedRule refers to a RuleGroup . The rule must belong to the RuleGroup that is specified by the ActivatedRule .
RuleId -> (string)
JSON Syntax:
[
{
"Action": "INSERT"|"DELETE",
"ActivatedRule": {
"Priority": integer,
"RuleId": "string",
"Action": {
"Type": "BLOCK"|"ALLOW"|"COUNT"
},
"OverrideAction": {
"Type": "NONE"|"COUNT"
},
"Type": "REGULAR"|"RATE_BASED"|"GROUP",
"ExcludedRules": [
{
"RuleId": "string"
}
...
]
}
}
...
]
--default-action (structure)
A default action for the web ACL, either ALLOW or BLOCK. AWS WAF performs the default action if a request doesn’t match the criteria in any of the rules in a web ACL.
Type -> (string)
Specifies how you want AWS WAF to respond to requests that match the settings in a Rule . Valid settings include the following:
-
ALLOW: AWS WAF allows requests -
BLOCK: AWS WAF blocks requests -
COUNT: AWS WAF increments a counter of the requests that match all of the conditions in the rule. AWS WAF then continues to inspect the web request based on the remaining rules in the web ACL. You can’t specifyCOUNTfor the default action for aWebACL.
Shorthand Syntax:
Type=string
JSON Syntax:
{
"Type": "BLOCK"|"ALLOW"|"COUNT"
}
--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.
--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.
Global Options
--debug (boolean)
Turn on debug logging.
--endpoint-url (string)
Override command’s default URL with the given URL.
--no-verify-ssl (boolean)
By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.
--no-paginate (boolean)
Disable automatic pagination. If automatic pagination is disabled, the AWS CLI will only make one call, for the first page of results.
--output (string)
The formatting style for command output.
- json
- text
- table
- yaml
- yaml-stream
--query (string)
A JMESPath query to use in filtering the response data.
--profile (string)
Use a specific profile from your credential file.
--region (string)
The region to use. Overrides config/env settings.
--version (string)
Display the version of this tool.
--color (string)
Turn on/off color output.
- on
- off
- auto
--no-sign-request (boolean)
Do not sign requests. Credentials will not be loaded if this argument is provided.
--ca-bundle (string)
The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.
--cli-read-timeout (int)
The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.
--cli-connect-timeout (int)
The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.
--cli-binary-format (string)
The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.
- base64
- raw-in-base64-out
--no-cli-pager (boolean)
Disable cli pager for output.
--cli-auto-prompt (boolean)
Automatically prompt for CLI input parameters.
--no-cli-auto-prompt (boolean)
Disable automatically prompt for CLI input parameters.
Examples
Note
To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.
Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .
To update a web ACL
The following update-web-acl command deletes an ActivatedRule object in a WebACL.
- aws waf update-web-acl
- –web-acl-id a123fae4-b567-8e90-1234-5ab67ac8ca90 –change-token 12cs345-67cd-890b-1cd2-c3a4567d89f1 –updates Action=”DELETE”,ActivatedRule=’{Priority=1,RuleId=”WAFRule-1-Example”,Action={Type=”ALLOW”},Type=”REGULAR”}’
Output:
{
"ChangeToken": "12cs345-67cd-890b-1cd2-c3a4567d89f1"
}
For more information, see Working with Web ACLs in the AWS WAF, AWS Firewall Manager, and AWS Shield Advanced Developer Guide.
Output
ChangeToken -> (string)
ChangeToken that you used to submit the UpdateWebACL request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus .
© Copyright 2025, Amazon Web Services. Created using Sphinx.