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By default, each web ACL has 1,500 capacity units. You can add multiple rules to one web ACL until it reaches the ACL total capacity.

Count only the requests that match your configured rule properties.įor example, you can have a very simple rule to block all requests coming from a particular country or set of IP addresses.

Block all incoming requests except those you specifically allow.

Allow all incoming requests except those you specifically block.

You can build your own rules based on your requirements or use existing rules offered by AWS or within the AWS Marketplace.Įach rule defines what to check for and what action to perform if needed. Rule Groups are reusable, plus you can use managed Rule Groups across multiple web ACLs.Ī WAF rule defines the common attack patterns to watch for in the incoming requests, as well as the action to take whenever a request matches a pattern. Each web ACL contains a set of Rules or Rule Groups.

To start protecting your AWS resources, you first need to create an Access Control List (ACL). Currently it can help in securing these endpoints:

This means that your web applications or web APIs can be exposed through different endpoints.ĪWS WAF can block hostile traffic and provide both web application security and API security. In an AWS environment, your application might be running on EC2 Virtual Machines or ECS Containers, or using Serverless services like API Gateway. What is AWS WAF?ĪWS WAF helps to protect front-end AWS services from various types of attacks and known vulnerabilities. In this article, we will discuss how to configure and use AWS WAF (Amazon Web Services’ Web Application Firewall) to protect web applications and APIs hosted in an AWS cloud environment. As more organizations have embraced the cloud, new security challenges have arisen, but new security tools have also become available.