AWS Shield vs AWS WAF vs. open-appsec, Which Should I Choose?
Let’s be frank, choosing a security solution that is tailored to your website or application needs is challenging. With so many options to choose from, how can you find a solution that will meet your requirements, provide a high level of protection, not break your budget and offer all the right features?
The stakes are extremely high. If you make the wrong choice, you risk losing time and money, putting your users in danger, and tarnishing your company’s reputation for good.
This is why we decided to compare AWS WAF and AWS Shield, two of the most popular security solutions, in this article. And as a bonus, we also tell you about a new open-source tool called open-appsec, which can be an even better choice for many.
AWS WAF vs Shield vs open-appsec Features
Property | AWS Shield | AWS WAF | open-appsec |
Security | | | |
ML-based WAF. No signature needed | No | No | Yes |
Zero-day protection (Text4Shell, Log4Shell, Spring4Shell, etc.) | No | No | Yes |
API protection | No | Yes | Yes |
OWASP TOP 10 | No | Yes | Yes |
Anti-bot | No | Yes (need integration with Amazon CloudFront) | Yes (premium feature) |
Anti-DDoS | Yes | No | No |
Integration | | | |
NGINX, NGINX Ingress, Envoy Add-On | No | No | Yes |
Kubernetes Ingress | No | No | Yes |
Gateway VM for AWS, Azure, and VMWare | No | No | Enterprise version |
Management | | | |
Declarative configuration and deployment | Yes | Yes | Yes |
SaaS Web-based Event Management & Dashboards | Yes | Yes | Yes |
Terraform | Yes | Yes | Yes |
Code and Price | | | |
Free | Yes (standard version) | No | Yes |
Open-source | No | No | Yes |
We know that you came to this page to compare AWS Shield and AWS WAF, but before we get to it, we want to introduce you to another tool that can be an even better solution!
open-appsec is an open-source web application and API security solution that helps stop application layer attacks like OWASP Top 10 and zero-day attacks like Spring4shell and Log4shell.
It uses machine learning to provide enterprise-level web application and API security with visibility, protection, and easy management needed by modern workloads.
What sets it apart from tools like AWS Shield and AWS WAF is that it provides pre-emptive protection against zero day attacks using machine learning, it is open-source and integrates with NGINX, Kubernetes, and Envoy. Also, open-appsec is easy to configure and manage.
It features cloud-native CI/CD-friendly deployment from installation to configuration, using declarative APIs or infrastructure-as-code. Now let’s consider the pros and cons of the three security solutions.
AWS WAF Pros and Cons
Pros | Cons |
Filter your site traffic to prevent malicious attacks. | Signature-based, not pre-emptive to Zero-Day attacks |
It can be easily administered using APIs. | Requires manual tuning of signatures |
Full integration with AWS Firewall Manager. | Premium signatures cost extra |
Account takeover fraud prevention. | Logging cost extra |
Provides basic rate limiting features |
AWS WAF is a firewall for web applications that allow businesses to monitor the HTTP(S) request made to their website or application.
This web application firewall lets you control how your content is accessed based on specified criteria like web requests from specific IP addresses.
Also, you can define a web access control list and associate it with the web app resource you want to protect.
Here are some of the features offered by AWS WAF:
Web traffic filtering. Create rules that help you filter your site traffic using IP addresses, custom URLs, HTTP headers and body, etc., giving you an added layer of protection from attacks.
AWS WAF bot control. This feature gives you visibility and control over pervasive bot traffic that can take excess resources, cause downtime, skew metrics, etc. Blocking bots such as scrappers, crawlers, or scanners is easy with just a few clicks.
Full feature API. Users can easily administer AWS WAF via APIs. This makes it easy for organizations to create and maintain rules automatically and integrate them into the development stage.
Integration with AWS Firewall Manager. You can set up and manage it across several AWS accounts using Firewall Manager, which automatically audits and informs your team where there is a policy violation to take action.
AWS Shield Pros and Cons
Pros | Cons |
Volumetric DDoS protection is free | Expensive to use. The monthly cost for AWS Shield Advanced starts at $3000 plus cost of traffic |
Highly scalable | Minimum one-year commitment for the advanced plan. |
Backup by AWS response team |
AWS Shield is a managed, multi-layered service that provides continuous threat detection and automatic inline mitigation to reduce application downtime and latency due to Distributed Denial of Service (DDoS) attacks.
It has two tiers: standard and advanced. AWS Shield Standard is free and ships with your package at no extra cost. It provides threat detection for infrastructure Layer 3 and 4 attacks, which include fragmented packet attacks, SYN/UDP floods, and other volumetric attacks.
Shield Advanced is a paid service that includes all the attributes of Standard and additional features to safeguard against complex DDoS attacks.
Here are some of the features offered by AWS Shield:
Free for standard features. You get AWS Shield Standard free of extra cost when you build your application with AWS.
Easy setup. Unlike AWS WAF, AWS Shield is easy to set up because you don't have to activate it yourself. To use the AWS Shield Advanced option, you need to configure it with a few clicks.
More advanced features. With an extra cost attached, you can choose AWS Shield Advanced for added protection. This service uses machine learning to detect and mitigate DDoS attacks before they can adversely affect your web app.
Visibility and attack notification. AWS Shield Advanced gives users complete visibility into DDoS attacks with notifications through Amazon CloudWatch.
open-appsec Pros and Cons
open-appsec Pros | open-appsec Cons |
Open-source, free-version, and easy to configure and manage. | It is a relatively new product compared to AWS WAF and Shield. |
Machine learning threat prevention helps prevent OWASP TOP 10 with very low amount of false positives. | It has a smaller community of users. |
Prevent Zero-day attacks such as Log4shell and Spring4Shell. | There isn’t a lot of information about the product on the internet. |
Protect your web application from bot attacks and prevent theft or loss of data. | |
Integrate into modern environments like public cloud, Kubernetes, NGINX, and Linux Servers. | |