| Copyright | (c) 2013-2018 Brendan Hay |
|---|---|
| License | Mozilla Public License, v. 2.0. |
| Maintainer | Brendan Hay <brendan.g.hay+amazonka@gmail.com> |
| Stability | auto-generated |
| Portability | non-portable (GHC extensions) |
| Safe Haskell | None |
| Language | Haskell2010 |
Network.AWS.WAF.CreateRateBasedRule
Description
Creates a RateBasedRule . The RateBasedRule contains a RateLimit , which specifies the maximum number of requests that AWS WAF allows from a specified IP address in a five-minute period. The RateBasedRule also contains the IPSet objects, ByteMatchSet objects, and other predicates that identify the requests that you want to count or block if these requests exceed the RateLimit .
If you add more than one predicate to a RateBasedRule , a request not only must exceed the RateLimit , but it also must match all the specifications to be counted or blocked. For example, suppose you add the following to a RateBasedRule :
- An
IPSetthat matches the IP address192.0.2.44/32 - A
ByteMatchSetthat matchesBadBotin theUser-Agentheader
Further, you specify a RateLimit of 15,000.
You then add the RateBasedRule to a WebACL and specify that you want to block requests that meet the conditions in the rule. For a request to be blocked, it must come from the IP address 192.0.2.44 and the User-Agent header in the request must contain the value BadBot . Further, requests that match these two conditions must be received at a rate of more than 15,000 requests every five minutes. If both conditions are met and the rate is exceeded, AWS WAF blocks the requests. If the rate drops below 15,000 for a five-minute period, AWS WAF no longer blocks the requests.
As a second example, suppose you want to limit requests to a particular page on your site. To do this, you could add the following to a RateBasedRule :
- A
ByteMatchSetwithFieldToMatchofURI - A
PositionalConstraintofSTARTS_WITH - A
TargetStringoflogin
Further, you specify a RateLimit of 15,000.
By adding this RateBasedRule to a WebACL , you could limit requests to your login page without affecting the rest of your site.
To create and configure a RateBasedRule , perform the following steps:
- Create and update the predicates that you want to include in the rule. For more information, see
CreateByteMatchSet,CreateIPSet, andCreateSqlInjectionMatchSet. - Use
GetChangeTokento get the change token that you provide in theChangeTokenparameter of aCreateRulerequest. - Submit a
CreateRateBasedRulerequest. - Use
GetChangeTokento get the change token that you provide in theChangeTokenparameter of anUpdateRulerequest. - Submit an
UpdateRateBasedRulerequest to specify the predicates that you want to include in the rule. - Create and update a
WebACLthat contains theRateBasedRule. For more information, seeCreateWebACL.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide .
Synopsis
- createRateBasedRule :: Text -> Text -> RateKey -> Natural -> Text -> CreateRateBasedRule
- data CreateRateBasedRule
- crbrName :: Lens' CreateRateBasedRule Text
- crbrMetricName :: Lens' CreateRateBasedRule Text
- crbrRateKey :: Lens' CreateRateBasedRule RateKey
- crbrRateLimit :: Lens' CreateRateBasedRule Natural
- crbrChangeToken :: Lens' CreateRateBasedRule Text
- createRateBasedRuleResponse :: Int -> CreateRateBasedRuleResponse
- data CreateRateBasedRuleResponse
- crbrrsRule :: Lens' CreateRateBasedRuleResponse (Maybe RateBasedRule)
- crbrrsChangeToken :: Lens' CreateRateBasedRuleResponse (Maybe Text)
- crbrrsResponseStatus :: Lens' CreateRateBasedRuleResponse Int
Creating a Request
Creates a value of CreateRateBasedRule with the minimum fields required to make a request.
Use one of the following lenses to modify other fields as desired:
crbrName- A friendly name or description of theRateBasedRule. You can't change the name of aRateBasedRuleafter you create it.crbrMetricName- A friendly name or description for the metrics for thisRateBasedRule. The name can contain only alphanumeric characters (A-Z, a-z, 0-9); the name can't contain whitespace. You can't change the name of the metric after you create theRateBasedRule.crbrRateKey- The field that AWS WAF uses to determine if requests are likely arriving from a single source and thus subject to rate monitoring. The only valid value forRateKeyisIP.IPindicates that requests that arrive from the same IP address are subject to theRateLimitthat is specified in theRateBasedRule.crbrRateLimit- The maximum number of requests, which have an identical value in the field that is specified byRateKey, allowed in a five-minute period. If the number of requests exceeds theRateLimitand the other predicates specified in the rule are also met, AWS WAF triggers the action that is specified for this rule.crbrChangeToken- TheChangeTokenthat you used to submit theCreateRateBasedRulerequest. You can also use this value to query the status of the request. For more information, seeGetChangeTokenStatus.
data CreateRateBasedRule Source #
See: createRateBasedRule smart constructor.
Instances
Request Lenses
crbrName :: Lens' CreateRateBasedRule Text Source #
A friendly name or description of the RateBasedRule . You can't change the name of a RateBasedRule after you create it.
crbrMetricName :: Lens' CreateRateBasedRule Text Source #
A friendly name or description for the metrics for this RateBasedRule . The name can contain only alphanumeric characters (A-Z, a-z, 0-9); the name can't contain whitespace. You can't change the name of the metric after you create the RateBasedRule .
crbrRateKey :: Lens' CreateRateBasedRule RateKey Source #
The field that AWS WAF uses to determine if requests are likely arriving from a single source and thus subject to rate monitoring. The only valid value for RateKey is IP . IP indicates that requests that arrive from the same IP address are subject to the RateLimit that is specified in the RateBasedRule .
crbrRateLimit :: Lens' CreateRateBasedRule Natural Source #
The maximum number of requests, which have an identical value in the field that is specified by RateKey , allowed in a five-minute period. If the number of requests exceeds the RateLimit and the other predicates specified in the rule are also met, AWS WAF triggers the action that is specified for this rule.
crbrChangeToken :: Lens' CreateRateBasedRule Text Source #
The ChangeToken that you used to submit the CreateRateBasedRule request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus .
Destructuring the Response
createRateBasedRuleResponse Source #
Arguments
| :: Int | |
| -> CreateRateBasedRuleResponse |
Creates a value of CreateRateBasedRuleResponse with the minimum fields required to make a request.
Use one of the following lenses to modify other fields as desired:
crbrrsRule- TheRateBasedRulethat is returned in theCreateRateBasedRuleresponse.crbrrsChangeToken- TheChangeTokenthat you used to submit theCreateRateBasedRulerequest. You can also use this value to query the status of the request. For more information, seeGetChangeTokenStatus.crbrrsResponseStatus- -- | The response status code.
data CreateRateBasedRuleResponse Source #
See: createRateBasedRuleResponse smart constructor.
Instances
Response Lenses
crbrrsRule :: Lens' CreateRateBasedRuleResponse (Maybe RateBasedRule) Source #
The RateBasedRule that is returned in the CreateRateBasedRule response.
crbrrsChangeToken :: Lens' CreateRateBasedRuleResponse (Maybe Text) Source #
The ChangeToken that you used to submit the CreateRateBasedRule request. You can also use this value to query the status of the request. For more information, see GetChangeTokenStatus .
crbrrsResponseStatus :: Lens' CreateRateBasedRuleResponse Int Source #
- - | The response status code.