Rule
. Each Predicate
object identifies a predicate, such as a ByteMatchSet or an IPSet, that specifies the web requests that you want to allow, block, or count. If you add more than one predicate to a Rule
, a request must match all of the specifications to be allowed, blocked, or counted. For example, suppose you add the following to a Rule
: A ByteMatchSet
that matches the value BadBot
in the User-Agent
header
An IPSet
that matches the IP address 192.0.2.44
You then add the Rule
to a WebACL
and specify that you want to block requests that satisfy the Rule
. For a request to be blocked, the User-Agent
header in the request must contain the value BadBot
and the request must originate from the IP address 192.0.2.44.
To create and configure a Rule
, perform the following steps:
Create and update the predicates that you want to include in the Rule
.
Create the Rule
. See CreateRule.
Use GetChangeToken
to get the change token that you provide in the ChangeToken
parameter of an UpdateRule request.
Submit an UpdateRule
request to add predicates to the Rule
.
Create and update a WebACL
that contains the Rule
. See CreateWebACL.
If you want to replace one ByteMatchSet
or IPSet
with another, you delete the existing one and add the new one.
For more information about how to use the AWS WAF API to allow or block HTTP requests, see the AWS WAF Developer Guide.