Azure Firewall¶
Azure Firewall is a scalable, cloud-native solution for securing network traffic and ensuring compliance with security policies.
Requirement¶
A global enterprise needs to secure network traffic to protect against threats and meet compliance requirements. The solution must inspect both east-west (internal) and north-south (external) traffic, use threat intelligence, and integrate with other Azure security services.
Requirement Analysis¶
Challenges include: - Inspecting internal and external traffic for threats - Using threat intelligence to block malicious traffic - Integrating with other Azure security services - Scaling with network traffic volume - Meeting regulatory and compliance requirements
Solution¶
Azure Firewall provides: 1. Firewall Deployment: Deploy in a virtual network. Choose SKU (Standard, Premium, Basic) and configure network/application rules. 2. Threat Intelligence: Enable filtering to block traffic from known malicious IPs/domains. 3. Network Segmentation: Segment networks into security zones and control traffic between them. 4. TLS Inspection: Decrypt and inspect outbound traffic for threats. 5. Integration: Integrate with Azure Security Center and Azure Sentinel for enhanced visibility and protection. 6. Monitoring and Alerts: Use Azure Monitor to track firewall performance and health. Set up alerts for security incidents.
Security¶
- Encrypt data at rest and in transit
- Use role-based access control (RBAC)
- Integrate with Azure Active Directory (AAD)
- Enable audit logs for tracking access and changes
Best Practices¶
- Update network and application rules regularly
- Monitor network traffic
- Automate responses to threats
- Conduct regular security audits
Cost Optimization¶
- Use pay-as-you-go pricing
- Utilize free data ingestion for certain Microsoft sources
Azure Resources¶
- Azure Firewall
- Azure Monitor
- Azure Active Directory
- Azure Security Center
- Azure Sentinel