AWS, Cloud Computing, Cyber Security

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Boost Availability and Manage DDoS Protection with AWS Shield

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Overview

In today’s digital landscape, the availability and security of online services are paramount. Distributed Denial of Service (DDoS) attacks continue to pose a significant threat to organizations, potentially causing downtime, financial losses, and reputational damage. Amazon Web Services (AWS) offers a robust solution called AWS Shield to combat these challenges. In this blog, we’ll delve into the world of DDoS protection and explore how AWS Shield can empower businesses to boost availability and effectively manage DDoS attacks.

Introduction

DDoS attacks involve overwhelming a target system or network with a flood of traffic, rendering it inaccessible to legitimate users. Attackers often deploy botnets – networks of compromised computers – to orchestrate these attacks. The impact can be devastating, disrupting services, damaging customer trust, and incurring substantial financial losses.

The Need for DDoS Protection

Maintaining continuous availability is crucial as businesses rely heavily on their online presence. A successful DDoS attack can disrupt operations, lead to lost revenue, and even harm an organization’s brand image. Traditional security measures like firewalls and intrusion detection systems are insufficient to mitigate the scale and sophistication of modern DDoS attacks. This is where AWS Shield comes into play.

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AWS Shield

AWS Shield is a managed Distributed Denial of Service (DDoS) protection service designed to safeguard applications running on AWS. It offers two tiers – Standard and Advanced – tailored to various needs and complexities. Let’s take a closer look at each tier:

  1. AWS Shield Standard (Free Service):
  • Automatically included at no extra cost with most AWS services.
  • Protects against most common, well-known network and transport layer DDoS attacks.
  • Provides always-on detection and automatic inline mitigations to minimize downtime and latency.
  1. AWS Shield Advanced (Paid Service):
  • Offers enhanced protection against larger and more sophisticated DDoS attacks.
  • Real-time attack visibility and detailed metrics empower organizations to fine-tune their security strategies.
  • Access to the AWS Global Threat Environment dashboard for actionable insights.
  • 24/7 access to the AWS DDoS Response Team (DRT) for personalized support during attacks.
  • Mitigation of application-layer attacks that may impact the performance of your applications.

Boosting Availability with AWS Shield

  • Rapid and Automatic DDoS Mitigation – AWS Shield provides automatic mitigation against DDoS attacks, ensuring minimal disruption to your services. With its always-on detection and mitigation capabilities, your applications remain available even during attack instances.
  • Scalable Architecture – AWS Shield is designed to scale with your application’s needs. Whether you’re running a small website or a complex multi-tier application, AWS Shield can adapt to handle traffic spikes and evolving attack vectors.
  • Protection Against Different Attack Vectors – From volumetric attacks that flood your network bandwidth to sophisticated application-layer attacks targeting your application’s resources, AWS Shield defends against a wide range of attack vectors.
  • Customizable Protection – AWS Shield allows you to fine-tune your DDoS protection strategy by adjusting settings and thresholds according to your application’s requirements. This flexibility ensures that legitimate traffic continues to flow while malicious traffic is filtered out.

Managing DDoS Attacks with AWS Shield

  • Real-time Attack Visibility – AWS Shield Advanced provides a comprehensive view of ongoing attacks through the Global Threat Environment dashboard. This real-time visibility empowers you to make informed decisions during an attack.
  • Actionable Insights – With access to attack metrics and patterns, you can analyze historical data to understand your application’s threat landscape better. This knowledge helps you bolster your defenses and refine your incident response plan.
  • 24/7 Support – In the face of a DDoS attack, timely response is crucial. AWS Shield Advanced offers around-the-clock AWS DDoS Response Team access, ensuring expert assistance during critical moments.

Working of AWS Shield

AWS Shield Standard and AWS Shield Advanced protect against DDoS attacks at both the network and transport layers and the application layer for your resources.

Moreover, if you use services such as Amazon CloudFront, Amazon Route 53, and Amazon Elastic Load Balancer, AWS Shield automatically extends protection to your resources at no additional cost.

Organizations can create customized web access control lists (web ACLs) with traffic inspection conditions translated into rules. Each rule can trigger an action, which can be either allowing, blocking, or counting traffic.

The “count” mode proves valuable for organizations as it allows them to monitor traffic patterns and make informed decisions about whether to implement a particular rule in “allow” or “block” mode.

One clear illustration of this capability is the rate-limiting feature, where it is automatically blocked if an IP address exceeds 2,000 requests within a five-minute interval.

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AWS Shield Pricing

These charges are separate from the standard fees for Amazon CloudFront, Amazon Route 53, Amazon Elastic Compute Cloud (EC2), and Global Accelerator services.

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Data Transfer out Fees

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Steps to set up AWS Sheild

Step 1: Log in to your AWS Console and navigate to the ‘AWS Shield’ service.

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Step 2: Within the AWS WAF & Shield panel, navigate to ‘Getting started’ on the left-hand side, and on the right-hand side, select ‘Subscribe to Shield Advanced.’

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Step 3: To subscribe to AWS Shield Advanced, you must accept all the terms and conditions. Check all the checkboxes to continue, then click the ‘Subscribe’ button.

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Step 4: Congratulations! You have now successfully subscribed to advanced protection. You can proceed to the next step, ‘Adding resources to protect.’

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Step 5: Click ‘Add resources for protection’ to begin adding your resources.

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Step 6: In this section, select your preferred region and the type of resources you wish to protect. You can also click “Load more resources” to include additional resources.

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Conclusion

Maintaining the availability and security of online services is a top priority for businesses in the digital age. DDoS attacks can disrupt operations, damage reputations, and lead to financial losses. AWS Shield offers a powerful solution to counter these threats, providing automatic and scalable DDoS protection. Whether you opt for the standard or advanced tier, AWS Shield equips you with the tools to boost availability, mitigate attacks, and manage DDoS incidents effectively.

By leveraging AWS Shield, organizations can confidently navigate the ever-evolving threat landscape and provide their users with a seamless and secure experience.

Drop a query if you have any questions regarding AWS Shield and we will get back to you quickly.

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FAQs

1. What are the benefits of upgrading to AWS Shield Advanced?

ANS: – AWS Shield Advanced offers enhanced DDoS protection, AWS DDoS Response Team (DRT) access, and advanced threat intelligence, making it suitable for high-profile applications with higher security needs.

2. Is AWS WAF included with AWS Shield, and how does it complement DDoS protection?

ANS: – AWS WAF is a separate service but can work in conjunction with AWS Shield. It helps protect against application layer (Layer 7) attacks and allows you to create rules for filtering and blocking traffic.

3. How can I monitor DDoS attacks and traffic patterns with AWS Shield?

ANS: – You can use AWS CloudWatch alarms to monitor key metrics related to DDoS attack detection and traffic. Additionally, AWS Shield Advanced provides detailed attack visibility.

WRITTEN BY H S Yashas Gowda

Yashas Gowda works as a Research Associate at CloudThat. He has good hands-on experience working on Azure and AWS services. He is interested to learn new technologies and tries to implement them.

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