With the continuous popularization of the internet and increased network bandwidth, global high-speed network coverage has brought convenience to everyone, but also created extremely favorable conditions for DDoS attacks. Malicious competition in the same industry, extortion involving criminal elements, has enabled DDoS attackers to profit from it. Currently, DDoS attacks have formed a complete black industry chain. Driven by profit, both attackers and defenders are constantly improving their technology.

To simply explain DDoS in one sentence: attackers launch attacks against targets using multiple sources (collaborators or compromised hosts). In the attack, each source (collaborator or compromised host) participates in the attack activity, generating massive amounts of data packets or requests to "flood" the target.

Traditional IDCs have long been plagued by DDoS attacks due to fixed network bandwidth and configurations. They constantly face issues like customer complaints, commercial interest losses, and legal disputes. With the popularization of public cloud, enterprise customers are moving to the cloud one after another, and DDoS attackers have also turned their focus to how to attack public clouds.

Classic Public Cloud DDoS Defense Architecture

• Separate administrator and user access points. Attackers typically disguise themselves as regular users, using brute force methods and high traffic to clog the network, preventing other users from accessing normally. Administrators access through a separate entrance, so attacks don't affect administrator access.
• Front-end load balancer works with WAF servers to scrub most attack traffic, reducing pressure on backend servers.
• Back-end load balancer distributes normal users and minimal attack traffic, reducing pressure on application servers.
• WAF servers and application servers both use auto-scaling mechanisms to automatically expand and resist attacks when under traffic impact.
• File managers save configuration files and important files. Administrators can quickly defend against attacks by modifying configuration files to change WAF policies.

Public cloud has significant advantages in defending against DDoS attacks. Combined with Taiyue Cloud Service expert team support, we can detect and defend against over 99.9% of DDoS attacks. We customize security architecture for your applications, provide comprehensive managed services, with dedicated personnel monitoring attack behavior around the clock, responding to attack actions most quickly, and maximizing the assurance of normal application operation.

DDoS attacks have strong purpose. Quickly determining the attack method and possible attack impact, handling attacks by level, and combining with cloud environment advantages can achieve comprehensive system protection and minimize the impact of DDoS attacks.

Responding to Attacks by Level

For high-traffic DDoS attacks, we can choose different response measures:

• When non-critical business or interruptible services are attacked, considering the excess costs generated by being attacked, you can choose to temporarily stop business and services, making it impossible for attackers to continue the attack.
• When critical business or services that must be guaranteed real-time are attacked, you can expand server computing power. This is exactly the advantage of cloud environment over physical data centers - preventing attackers from achieving their attack goals, leading them to abandon the attack.
• When business requires global services, you can quickly analyze attacker sources through cloud rules, discard traffic from that region through front-end proxy rules. Although this may affect access latency for users in that region, it can significantly reduce the impact of attacks on global services.

Leveraging Cloud Environment Advantages

• Cloud environment has high sensitivity. When abnormal traffic appears, it can be quickly detected. Combined with professional teams, attacks can be responded to quickly.
• Cloud environment has rapid change advantages. During attacks, after analyzing attack records, rules can be quickly changed to discard regional traffic, block range IPs, blacklist block, etc.
• Rapid scaling of cloud resources can expand computing power in a short time, absorbing high-traffic attacks and ensuring normal service operation.

We focus on your DDoS protection, you focus on your business domain.