Layer 4 vs Layer 7 DDoS attacks explained

Knowledge & Answers

Layer 4 vs Layer 7 DDoS attacks explained

Layer 4 targets transport, Layer 7 targets the application. Defense differs for each.

Layer 4 attacks

Layer 4 attacks are often volumetric. Examples include SYN floods, UDP floods, or amplification.

The goal is to exhaust bandwidth or connection resources.

Layer 7 attacks

Layer 7 attacks simulate legitimate requests, such as HTTP floods or slowloris.

They are harder to detect because traffic can look like real users.

Detection and mitigation

Layer 4 attacks are often filtered or scrubbed at the network edge.

Layer 7 defense uses WAFs, rate limits, caching, and behavior analysis.

Practical relevance

Game servers often face Layer 4 attacks, while web apps are more exposed to Layer 7 traffic.

Key takeaways

Die wichtigsten Punkte auf einen Blick

Layer 4 is volumetric, Layer 7 is application focused.

Effective protection needs different tools.

Accountability & Trust

Transparent content, technical expertise, and clear contact paths.

Author / Responsible

Content responsibility: dashserv technical team. This content was prepared by dashserv technicians with experience operating high-availability hosting.

Technical Expertise

Operation, monitoring and protection of hosting infrastructure, DDoS protection, and platforms for vServer, VDS and dedicated. Details on the Hardware page.

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Contact: [email protected]. Legal details in the Imprint. Locations in Germany (e.g., Duesseldorf and Frankfurt am Main).