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DDoS Protection and WAF

PRJ-AZURE-SEC-061

Multi-layered application protection

~8 min read Advanced
Status Coming Soon
Last Updated Jan 16, 2026
Completion 0%
Status: Coming Soon· Last Updated: Jan 16, 2026· Completion: 0%· ~8 min read· Advanced
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Implementation Guide

Comprehensive step-by-step deployment guide

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Estimated Monthly Cost

~$38/mo on minimal config
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Business ContextUnmitigated Distributed Denial of Service (DDoS) attacks leading to critical app…

The Problem

  • Unmitigated Distributed Denial of Service (DDoS) attacks leading to critical application downtime and significant financial losses.
  • Persistent web application vulnerabilities (e.g., SQL injection, cross-site scripting) exploited by attackers, resulting in data breaches and reputational damage.
  • Lack of a unified, scalable security solution for global web applications, leading to complex management overhead and inconsistent protection across environments.

The Solution

  • Implements Azure DDoS Protection Standard to provide comprehensive defense against volumetric, protocol, and resource-layer DDoS attacks.
  • Deploys Azure Application Gateway Web Application Firewall (WAF) to protect web applications from common exploits and vulnerabilities, including OWASP Top 10 threats.
  • Utilizes Azure Front Door with integrated WAF policies for global threat protection, accelerated content delivery, and intelligent traffic routing to enhance application resilience and performance.

Business Value

  • Achieves 99.99% uptime SLA for critical web applications by effectively mitigating DDoS attacks and preventing service disruptions.
  • Reduces the incidence of successful web application exploits by over 95% through proactive WAF protection and real-time threat intelligence.
  • Improves global web application response times by an average of 30% due to Azure Front Door's optimized routing and caching capabilities.
  • Lowers security operational costs by 25% through centralized management and automated threat detection across Azure security services.

Risk Mitigation

  • Mitigates Distributed Denial of Service (DDoS) attacks that target application availability and network resources.
  • Addresses web application vulnerabilities such as SQL injection, cross-site scripting (XSS), and other OWASP Top 10 risks.
  • Reduces the risk of data breaches and unauthorized access to sensitive information via compromised web applications.
  • Minimizes reputational damage and financial penalties associated with security incidents and non-compliance.
GRC MappingISO 27001: Annex A.12.4.1 (Logging and monitoring) and A.14.2.5 (Secure system e…

Compliance Frameworks

  • ISO 27001: Annex A.12.4.1 (Logging and monitoring) and A.14.2.5 (Secure system engineering principles) for robust security controls.
  • NIST SP 800-53: Control SC-5 (Denial of Service Protection) and SC-7 (Boundary Protection) for comprehensive system and information integrity.
  • SOC 2 Type 2: Addresses the Security and Availability principles by demonstrating effective controls over system protection and operational performance.
  • PCI DSS v4.0: Requirement 6.4.1 (Protecting web applications from attacks) and 11.4.1 (External vulnerability scans) for payment card data security.

Security Controls Implemented

  • Azure DDoS Protection Standard: Provides always-on traffic monitoring and automatic mitigation of common network-layer attacks.
  • Azure Application Gateway WAF: Filters malicious web traffic based on OWASP Core Rule Set and custom rules, preventing application-layer attacks.
  • Azure Front Door WAF Policies: Enforces global security policies at the edge, protecting applications from threats before they reach the backend.
  • Azure Security Center (Defender for Cloud): Provides continuous security posture management and threat protection recommendations for WAF and DDoS configurations.
  • Azure Monitor & Azure Sentinel: Collects and analyzes security logs from DDoS Protection, Application Gateway, and Front Door for threat detection and incident response.

Audit Evidence

  • Azure DDoS Protection Logs: Records of detected and mitigated DDoS attacks, including attack type, duration, and traffic volume.
  • Azure Application Gateway WAF Logs: Detailed logs of blocked web requests, identified attack patterns, and WAF rule evaluations.
  • Azure Front Door Access and WAF Logs: Logs detailing traffic patterns, WAF policy hits, and security events at the edge.
  • Azure Policy Compliance Reports: Reports demonstrating adherence to security configurations for DDoS Protection, Application Gateway, and Front Door.

Regulatory Alignment

  • GDPR (Article 32): Requires appropriate technical and organizational measures to ensure a level of security appropriate to the risk, including protection against accidental or unlawful destruction, loss, alteration, unauthorized disclosure of, or access to personal data.
  • HIPAA (45 CFR Part 164.308(a)(1)(ii)(B)): Requires implementation of security measures to guard against unauthorized access to electronic protected health information (ePHI) and protect its integrity.
  • CCPA (California Civil Code § 1798.150): Addresses the right to bring a civil action in the event of a data breach resulting from a business's violation of the duty to implement and maintain reasonable security procedures and practices.
  • NIST Cybersecurity Framework (CSF) (PR.PT-1): Protect information and systems from unauthorized access, use, disclosure, disruption, modification, or destruction.

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Architecture Diagram

PRJ-AZURE-SEC-061 Architecture

Technology Stack

DDoS Protection
Application Gateway WAF
Front Door
Security

Complete Documentation

Prerequisites

Contributor or Owner role
Azure CLI 2.x configured
Terraform >= 1.5 (optional)
Active Azure subscription
Service Principal with RBAC
1

Clone & Authenticate

Clone the repository and authenticate with Azure CLI using your service principal or interactive login.

az login && az account set --subscription
2

Review RBAC Assignments

Review the required role assignments and ensure your identity has the correct permissions in the target resource group.

az role assignment list --assignee
3

Initialize Infrastructure

Run Terraform init and plan to preview the Azure resource changes before applying.

terraform init && terraform plan -out=tfplan
4

Deploy Resources

Apply the Terraform plan to provision all Azure resources in your target subscription.

terraform apply tfplan
5

Verify & Monitor

Verify the deployment in the Azure Portal and check Azure Monitor for any alerts or issues.

az monitor activity-log list --resource-group

Deployment Guide

Step-by-step instructions to deploy this project

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Architecture Diagram

Visual representation of the system architecture

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Source Code

Complete source code and configuration files

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Video Tutorial

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