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Update Web Acl

waf_update_web_acl R Documentation

This is AWS WAF Classic documentation

Description

This is AWS WAF Classic documentation. For more information, see AWS WAF Classic in the developer guide.

For the latest version of AWS WAF, use the AWS WAFV2 API and see the AWS WAF Developer Guide. With the latest version, AWS WAF has a single set of endpoints for regional and global use.

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, 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 WebACL.

  • The Rules that you want to add or delete. If you want to replace one Rule with another, you delete the existing Rule and 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 the Rule.

  • The order in which you want AWS WAF to evaluate the Rules in a WebACL. If you add more than one Rule to a WebACL, AWS WAF evaluates each request against the Rules in order based on the value of Priority. (The Rule that has the lowest value for Priority is evaluated first.) When a web request matches all the predicates (such as ByteMatchSets and IPSets) in a Rule, AWS WAF immediately takes the corresponding action, allow or block, and doesn't evaluate the request against the remaining Rules in the WebACL, if any.

To create and configure a WebACL, perform the following steps:

  1. Create and update the predicates that you want to include in Rules. For more information, see create_byte_match_set, update_byte_match_set, create_ip_set, update_ip_set, create_sql_injection_match_set, and update_sql_injection_match_set.

  2. Create and update the Rules that you want to include in the WebACL. For more information, see create_rule and update_rule.

  3. Create a WebACL. See create_web_acl.

  4. Use get_change_token to get the change token that you provide in the ChangeToken parameter of an update_web_acl request.

  5. Submit an update_web_acl request to specify the Rules that you want to include in the WebACL, to specify the default action, and to associate the WebACL with a CloudFront distribution.

    The ActivatedRule can be a rule group. If you specify a rule group as your ActivatedRule , 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 an update_web_acl request 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 update_web_acl 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.

Usage

waf_update_web_acl(WebACLId, ChangeToken, Updates, DefaultAction)

Arguments

WebACLId

[required] The WebACLId of the WebACL that you want to update. WebACLId is returned by create_web_acl and by list_web_ac_ls.

ChangeToken

[required] The value returned by the most recent call to get_change_token.

Updates

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 Action and ActivatedRule

  • ActivatedRule: Contains Action, OverrideAction, Priority, RuleId, and Type. 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.

  • WafAction: Contains Type

DefaultAction

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.

Value

A list with the following syntax: 

list(
  ChangeToken = "string"
)

Request syntax

svc$update_web_acl(
  WebACLId = "string",
  ChangeToken = "string",
  Updates = list(
    list(
      Action = "INSERT"|"DELETE",
      ActivatedRule = list(
        Priority = 123,
        RuleId = "string",
        Action = list(
          Type = "BLOCK"|"ALLOW"|"COUNT"
        ),
        OverrideAction = list(
          Type = "NONE"|"COUNT"
        ),
        Type = "REGULAR"|"RATE_BASED"|"GROUP",
        ExcludedRules = list(
          list(
            RuleId = "string"
          )
        )
      )
    )
  ),
  DefaultAction = list(
    Type = "BLOCK"|"ALLOW"|"COUNT"
  )
)

Examples

## Not run: 
# The following example deletes an ActivatedRule object in a WebACL with
# the ID webacl-1472061481310.
svc$update_web_acl(
  ChangeToken = "abcd12f2-46da-4fdb-b8d5-fbd4c466928f",
  DefaultAction = list(
    Type = "ALLOW"
  ),
  Updates = list(
    list(
      Action = "DELETE",
      ActivatedRule = list(
        Action = list(
          Type = "ALLOW"
        ),
        Priority = 1L,
        RuleId = "WAFRule-1-Example"
      )
    )
  ),
  WebACLId = "webacl-1472061481310"
)

## End(Not run)