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AWS WAF (Web Application Firewall) is an online application firewall that helps protect your web applications or APIs against typical web exploits and bots that can cause availability issues, security compromises, or resource consumption issues.



 When it comes to traffic reaching your applications, AWS WAF gives you complete control by allowing you to establish security rules that govern bot traffic and stop typical attack patterns such as SQL injection and cross-site scripting. You can also create rules that exclude specific traffic patterns based on your preferences. Controlled Rules for AWS WAF is a pre-configured set of rules managed by AWS or AWS cloud computing marketplace Sellers that may be used to handle concerns such as the OWASP Top 10 security threats and automated bots that consume excessive resources, skew metrics, or create downtime. As new issues arise, these guidelines are updated regularly. In addition to a fully-featured API, AWS WAF features a security rule management system that allows you to automate the creation, deployment, and maintenance of security rules. It is possible to deploy AWS WAF on Amazon CloudFront as part of your CDN solution, the Application Load Balancer that fronts your web servers or origin servers running on EC2, Amazon API Gateway for your REST APIs, or AWS AppSync for your GraphQL APIs. Amazon CloudFront is a CDN service provided by Amazon Web Services. With AWS WAF, you only pay for what you use, and the cost is determined by the number of rules you install and the number of web requests your application receives each day.

How it Works


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  • Filtering of web traffic

Custom URIs and IP addresses are among the criteria that can be used to filter web traffic in AWS WAF. Other conditions include HTTP headers and body and HTTP headers and body. The second layer of defense against web attacks that aim to exploit vulnerabilities in bespoke or third-party web apps is provided by this feature. Furthermore, AWS WAF makes it simple to set rules that prevent typical web attacks such as SQL injection and cross-site scripting from being executed on the server.

Using the AWS WAF, you can centrally manage rules that may be applied to several websites at once. Therefore, in an environment with numerous websites and web applications, you may establish a single set of rules that can be reused across applications rather than having to recreate that rule for every application you wish to secure.

  • AWS WAF Bot Control

This managed rule group in AWS WAF provides visibility and control over widespread bot activity that can consume excessive resources, skew metrics, cause downtime, or engage in other unwanted behavior. For example, with a few clicks, you may prohibit or rate-limit ubiquitous bots, such as scrapers, scanners, and crawlers, or you can enable popular bots, such as status monitors and search engines, to operate on your website. When used in conjunction with other Managed Rules for WAF or with custom WAF rules, the Bot Control managed rule group can provide additional protection for your applications.

  • Preventing account takeover fraud is important.

An account takeover prevention managed rule group in the AWS WAF Fraud Control service monitors your application’s login page for attempts to access user accounts using compromised credentials. Credential stuffing assaults, brute force login attempts, and other unusual login activity can all be prevented with the help of the ruling group. In addition, user devices that attempt to log into your application can be equipped with optional JavaScript and iOS/Android SDKs, allowing you to collect additional information about them and utilize it to better secure your application from automated login attempts by bots. Account Takeover Prevention is a feature of Managed Rules for AWS DevOps that may be used in conjunction with Bot Control to protect your application from bot assaults and prevent them from taking over your account.

  • Feature-length API

Through APIs, AWS WAF may be managed in its entirety. The capacity to set and manage rules in a standardized manner and incorporate them into the development and design process gives organizations a competitive advantage. Example: As part of the deployment process, a developer with in-depth knowledge of the web application may build a security rule that would be applied to it. When you can incorporate security into your development process, you may avoid the requirement for complex handoffs between application and security teams to ensure that rules remain up to date.

As an alternative, AWS WAF may be built and provisioned automatically through AWS CloudFormation sample templates, which allow you to describe all of the security rules that you would like to implement for your web applications delivered over Amazon CloudFront.

  • Real-time visibility is essential.

Using AWS WAF, you can get real-time data and collect raw requests, including information about IP addresses and geographic regions and information about URIs, User-Agent, and Referrers. As a result, it is simple to set up custom alarms when thresholds are exceeded, or specific assaults occur since AWS WAF is completely integrated with Amazon CloudWatch, making it simple to monitor and respond to attacks. In addition, this information gives vital intelligence that may be utilized to develop new rules that will better safeguard apps due to the information.

  • Integration with Amazon Web Services Firewall Manager

AWS Firewall Manager allows you to centrally configure and manage AWS WAF deployments across numerous AWS accounts by using a single AWS account. In addition, it is possible to verify that new resources comply with a standard set of security rules added to the system. Firewall Manager automatically audits your network and notifies your security team when a policy violation is detected, allowing them to respond quickly and take appropriate action.


  • Protection against web-based threats that are flexible

The propagation and updating of AWS WAF rules take less than a minute, allowing you to swiftly update security across your whole environment when problems develop. WAF supports hundreds of rules that can check any portion of a web request while imposing the least latency on incoming traffic possible. By filtering traffic based on rules you define, AWS WAF prevents web applications from being attacked. Filtering web requests can include everything from IP addresses to HTTP headers to the HTTP body and URI strings to many other things. This allows you to prevent typical attack patterns, such as SQL injection and cross-site scripting, from taking advantage of your system.

  • Managed rules let you save time.

With Managed Rules for AWS WAF, you can get up and running quickly and defend your web application or APIs against common risks within minutes. You can choose from a variety of rule types, including those that address concerns such as the Top 10 security risks identified by the Open Web Application Security Project (OWASP), threats related to Content Management Systems (CMS), and developing Common Vulnerabilities and Exposures (CVEs) (CVE). In addition, managed rules are automatically updated as new concerns arise, allowing you to spend more time developing apps rather than maintaining them.

  • Enhancement in the amount of online traffic

As a result of AWS WAF’s near-real-time insight into your web traffic, you can utilize it to generate new rules or alerts in Amazon CloudWatch. With granular control over how the metrics are emitted, you may monitor everything from individual rules to the full inbound traffic stream. Additional features include thorough logging, which captures the complete header data of each analyzed web request for use in security automation, analytics, and auditing.

  • Implementation and maintenance are made simple.

AWS WAF is simple to implement and secure applications that are hosted on Amazon CloudFront as part of your CDN solution, the Application Load Balancer that fronts all of your origin servers, Amazon API Gateway for your REST APIs, or AWS AppSync for your GraphQL APIs, among other AWS computing cloud server infrastructure services. A reverse proxy is not required, nor is any additional software to be installed, nor is any DNS configuration, SSL/TLS certificate, or SSL/TLS certificate management needed. AWS Firewall Manager integration allows you to define and administer your rules from a single location while reusing them across all web apps you need to secure.

  • Easy-to-use bot monitoring and control, including blocking and rate-limiting

With AWS WAF Bot Control, you can gain insight and control over the ubiquitous and pervasive bot traffic directed at your apps and resources. Using the AWS WAF panel, you can keep track of typical bots such as status monitors and search engines. You can obtain precise, real-time insight into bot traffic such as the category, identity, and other relevant characteristics. Traffic from ubiquitous bots such as scrapers, scanners, and crawlers can also be blocked or limited by setting a rate limit on the traffic. In addition, it is possible to install the Bot Control managed rule group across several accounts in your AWS Organization by utilizing the AWS Firewall Manager service.

  • Security should be built into the way applications are developed.

You may configure every functionality in the AWS WAF by interacting with it using the AWS WAF API or the AWS Management Console. This enables your DevOps team to set application-specific rules that boost online security as they develop applications, which will benefit your organization. In addition, this allows you to integrate web security into the development process chain at multiple points, from the hands of the developer who is initially writing code to the hands of the DevOps engineer who is deploying software to the hands of the security administrators who are enforcing a set of rules across the organization.

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Use Cases

  • A firewall at the network’s edge can stop undesired bot traffic.

AWS WAF and Amazon CloudFront’s Bot Control work together to restrict bot traffic at the network edge. Reduce the operational and infrastructural costs associated with scrapers, scanners, and crawler traffic by using Bot Control to minimize their influence on your application. Removal of bot traffic that might distort traffic and conversion numbers is another benefit of Bot Control.

  • Ensure the safety of your proprietary information.

This includes crawlers and scrapers used by websites to index their content, retrieve files from their website’s APIs, or use them in an unauthorized manner. To restrict individual bots or an entire category of bots, such as SEO crawlers, scrapers, or monitoring programs, you can use Bot Control. However, it is impossible to disable Bot Control by default, so search engine web crawlers will not be blocked.

  • Respond to bot traffic with an alternative piece of content.

It’s possible to customize application operations for bot traffic using WAF capabilities like Bot Control and custom responses. The traffic generated by “scraping” bots, for example, may help your site’s ranking, but excessive queries from these bots may cause your real-time pricing database to crash. Using AWS WAF, bot traffic can be diverted to a cached endpoint for pricing data, while user traffic is routed to pages with up-to-the-minute pricing information.

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Web access control lists (web ACLs), the number of rules you add per web ACL, and the volume of web requests are all factors in AWS WAF pricing. Commitments are not required at the outset. Prices for Amazon CloudFront, Application Load Balancer (ALB), Amazon API Gateway, and AWS AppSync do not include the cost of AWS WAF. You will be charged for each web ACL you create and each rule you make for each web ACL that you generate. Additional charges will be made for the number of web requests that the web ACL processes. All AWS Regions have the same pricing structure. There is a prorated monthly cost for each hour of usage. You will be charged additional costs if you subscribe to a managed rule group provided by an AWS Marketplace merchant. In addition to the AWS WAF fees, these charges apply.

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