Question 20

Explanation

Azure Firewall is a cloud-native network security service that provides network level protection for resources within a virtual network. It is a Network Virtual Appliance (NVA) that operates at Layer 3 and 4, which makes it ideal for protecting a wide range of network-based services including Virtual Machines, Web Applications, and SQL databases. It provides Outbound Network Address Translation (NAT) for all resources within the virtual network, thereby allowing them to communicate with the public internet. Additionally, Azure Firewall also supports Inbound NAT rules and Network Security Groups (NSGs), which can be used to restrict or allow access to specific ports and protocols.

Azure Firewall is deployed within a dedicated subnet within a virtual network. This allows all ingoing and outgoing traffic to the internet to be routed through the firewall. This configuration enables centralized control and ensures that all traffic is inspected and managed with the same set of security policies. Administrators can configure and manage the firewall policies using the Azure portal or via the Azure Firewall REST API. Azure Firewall is designed to be scalable, and administrators can deploy multiple instances to support large-scale deployments while ensuring high availability.

As for the other options:

- Azure Firewall is not a PaaS offering. Azure provides Web Application Firewall as a PaaS offering to provide Layer 7 protection for outgoing connections.

- Azure Firewall is not a SaaS offering. Microsoft Defender for Endpoint provides protection for endpoints and emails within Microsoft 365.

- Azure Firewall is not open-source software.

For more information on Azure Firewall, you can refer to the official Microsoft documentation at the following link: https://learn.microsoft.com/en-us/azure/firewall/overview