liveBook · Manning

Distributed denial of service attack

As explained in Azure Security

A distributed denial-of-service attack is an attack that overwhelms a target with traffic or requests from multiple sources to disrupt availability.

A distributed denial-of-service attack overwhelms a public-facing application or Azure resource with traffic from multiple sources, disrupting availability and potentially causing lost revenue, reputational damage, recovery costs, and unexpected autoscaling charges. section 3.4

Azure DDoS Protection mitigates the attack at public IP entry points by:

  • Establishing thresholds for inbound SYN, TCP, and UDP traffic above usual observed levels. section 3.4.1
  • Analyzing traffic properties at the network and transport layers with proprietary detection and mitigation techniques. section 3.4.1
  • Dropping traffic identified as malicious while continuing to inspect legitimate increases, such as seasonal demand. section 3.4.1
  • Offering Basic protection at no additional cost, built into Azure without setup, alongside a Standard SKU. section 3.4.1

Online ordering application

An attack against an Azure shopping application can make ordering unavailable and trigger autoscaling in Application Gateway v2 or Virtual Machine Scale Sets. Azure DDoS Protection helps distinguish malicious traffic from legitimate customer surges. section 3.4 section 3.4.1

How Azure Security covers it

How deep it goes
Explains public IP protection, traffic thresholds, protocol metrics, inspection, dropping behavior, and Basic-versus-Standard availability.
Examples
Uses an online ordering application, seasonal customer traffic, Application Gateway v2, and Virtual Machine Scale Sets as concrete scenarios.
What it assumes
Assumes familiarity with Azure resources, public IP addresses, public-facing applications, and cloud services that autoscale.
What you can do after
Operate Azure DDoS Protection with an understanding of its entry points, traffic thresholds, mitigation decisions, and Basic SKU defaults.
How it connects
Connects Azure DDoS Protection with public IP addresses, public-facing web applications, autoscaling, Application Gateway, and Virtual Machine Scale Sets.

Also explained in

Compare how 3 books explain distributed denial of service attack →

Related concepts

This explainer was generated by Manning's knowledge graph from the text of Azure Security. The section links point to the parts of the book it draws on.