Azure DDoS Protection Overview

A DDoS attack is a malicious attempt to interrupt the regular operation of a targeted server, service, or network by overloading it with a large volume of internet traffic from various sources.

Azure DDoS Protection is a service that helps to defend Azure resources from DDoS attacks. It detects, mitigates, and stops DDoS attacks, ensuring that Azure-hosted applications and services remain available and perform well. Azure DDoS Protection is a critical component of Azure security, protecting the cloud infrastructure from disruptive cyber attacks.

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Topics covered in this blog are:

Introduction to DDoS Attack

A Distributed Denial of Service (DDoS) attack is a malicious effort to interrupt regular traffic to a specific server, service, or network by flooding it with internet traffic from many sources. These assaults are carried out via an attacker-controlled network of hacked computers or devices, often known as a botnet.

DDOS Attack

A DDoS assault aims to render the targeted system or network inaccessible to its intended users, resulting in downtime, financial losses, and reputational harm to the victim. Several approaches, including amplification assaults, SYN floods, and HTTP floods, are used to create huge amounts of traffic and deplete the target’s resources.

Azure DDoS protection

Azure DDoS Protection is a service that protects Azure resources from distributed denial-of-service (DDoS) assaults. It runs at the Azure network edge, automatically detecting and mitigating DDoS assaults to ensure Azure service availability even during large-scale attacks. Azure DDoS Protection offers continuous monitoring and real-time mitigation, harnessing the size and flexibility of the Azure global network to absorb and mitigate DDoS assaults before they affect client workloads.

Azure DDOS protection

Azure DDoS Protection Tiers

Azure DDoS security provides two tiers of security to protect your resources from denial-of-service attacks: DDoS IP Protection and DDoS Network Protection.

DDoS IP protection

This tier protects particular Azure resources, such as virtual machines and web applications. It analyses traffic patterns particular to the protected IP addresses and automatically mitigates threats to those resources.

DDoS Network Protection

This tier protects your whole virtual network. It analyses network traffic and detects malicious DDoS assaults before they reach your particular resources. This provides more comprehensive protection for all resources in the virtual network.

Azure DDoS Protection Comparison

Feature	DDoS IP Protection	DDoS Network Protection
Active traffic monitoring & always-on detection	Yes	Yes
L3/L4 Automatic attack mitigation	Yes	Yes
Automatic attack mitigation	Yes	Yes
Application-based mitigation policies	Yes	Yes
Metrics & alerts	Yes	Yes
Mitigation reports	Yes	Yes
Mitigation flow logs	Yes	Yes
Mitigation policies tuned to customer’s application	Yes	Yes
Integration with Firewall Manager	Yes	Yes
Microsoft Sentinel data connector and workbook	Yes	Yes
Protection of resources across subscriptions in a tenant	Yes	Yes
Public IP Standard tier protection	Yes	Yes
Public IP Basic tier protection	No	Yes
DDoS rapid response support	Not available	Yes
Cost protection	Not available	Yes
WAF discount	Not available	Yes
Price	Per protected IP	Per 100 protected IP addresses

Azure DDoS protection Features

Always-on Traffic Monitoring: Continuously analyses traffic patterns for unusual behavior, which aids in detecting DDoS assaults before they impair service.
Automatic Attack Mitigation: Detects and mitigates DDoS assaults without operator intervention, resulting in minimum disruption during an attack.
Multi-layered security: Provides security at Layers 3 (network) and 4 (transport) of the OSI model, protecting against common DDoS assaults such as volumetric and SYN floods.
Scaling to Address Threats: Scales automatically to fight DDoS assaults of any magnitude, maintaining service uptime while minimizing the effect on genuine users.
Cost Guarantee: Receive service credit for proven DDoS attack resource charges, ensuring financial security throughout an assault.
Native Integration: A seamless setup experience via the Azure portal that simplifies deployment and administration.
Turnkey Protection: Provides immediate protection for virtual networks and public IP resources upon activation, ensuring that your resources are protected from the time you activate protection.
Advanced Analytics: Machine learning customizes mitigation rules for each protected IP address, maximizing resource utilization and assuring timely attack response.