Azure Firewall Lesson

Introduction

Azure Firewall is a cloud-native network security service that protects Azure Virtual Network resources. It offers a stateful firewall as a service, which provides high availability, scalability, and the ability to manage traffic from and to Azure resources.

Key Points

• Azure Firewall is fully integrated with Azure Monitor for logging and analytics.
• It supports both inbound and outbound traffic filtering.
• Azure Firewall can be deployed in a hub-and-spoke architecture for better network segmentation.
• It supports Threat Intelligence-based filtering to block traffic from/to known malicious IP addresses.

Setup Steps

Follow these steps to set up Azure Firewall:

            flowchart TD
                A[Start] --> B[Create Resource Group]
                B --> C[Create Azure Firewall]
                C --> D[Configure Firewall Rules]
                D --> E[Deploy and Test]
                E --> F[Monitor and Adjust]
                F --> G[End]
        

Here’s a brief description of each step:

1. Create a Resource Group in the Azure portal.
2. Deploy Azure Firewall from the Azure Marketplace.
3. Configure your firewall rules as per the requirements.
4. Test the firewall by trying to access protected resources.
5. Monitor through Azure Monitor and adjust rules as needed.

Best Practices

• Use Application Rules for HTTP/S traffic control.
• Implement Network Rules for non-HTTP/S protocols.
• Utilize Threat Intelligence feeds for enhanced security.
• Regularly review and update your firewall rules based on traffic patterns.

FAQ